The invention relates to an unmanned aerial vehicle (UAV), the operation of a UAV, and the control of a UAV. Aspects of the invention relate to a UAV including a directional distance measuring module for inspecting/surveying/measuring/digitizing the UAV's environment.
The invention relates to a laser tracker for the industrial, coordinative position determination of a target, the laser tracker providing two measurement functionalities, namely a measurement functionality for measuring and tracking a cooperative, e.g. retroreflective, target and a measurement functionality for the e.g. scanning measurement of a target with diffuse scattering, wherein both measurement functionalities can be carried out and referenced to each other by means of the same optoelectronic distance measurement device.
G01S 17/42 - Simultaneous measurement of distance and other coordinates
G01S 17/89 - Lidar systems, specially adapted for specific applications for mapping or imaging
G01S 17/66 - Tracking systems using electromagnetic waves other than radio waves
G01S 17/34 - Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
3.
DIGITAL REALITY PLATFORM PROVIDING DATA FUSION FOR GENERATING A THREE-DIMENSIONAL MODEL OF THE ENVIRONMENT
The present invention relates to three-dimensional reality capturing of an environment, wherein data of various kinds of measurement devices are fused to generate a three-dimensional model of the environment. In particular, the invention relates to a computer-implemented method for registration and visualization of a 3D model provided by various types of reality capture devices and/or by various surveying tasks.
G06T 19/20 - Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
G06F 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
G06T 19/00 - Manipulating 3D models or images for computer graphics
The invention relates generally to a metrology system and coordinate measuring devices to be used within the framework of a smart factory environment, which has a defined arrangement of different metrology devices, configured such that coordinate measuring data generated by different metrology devices are referencable to a common coordinate system.
G01C 15/00 - Surveying instruments or accessories not provided for in groups
G01B 11/00 - Measuring arrangements characterised by the use of optical techniques
G01B 21/04 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
G01S 7/00 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , ,
G01S 7/48 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group
G01S 17/02 - Systems using the reflection of electromagnetic waves other than radio waves
G01S 17/89 - Lidar systems, specially adapted for specific applications for mapping or imaging
G01S 7/48 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group
6.
MEASUREMENT METHOD, MEASUREMENT SYSTEMS AND AUXILIARY MEASUREMENT INSTRUMENTS
The invention relates to a measurement system, e.g. comprising a total station and an auxiliary measurement instrument in the form of a pole, and/or an auxiliary measurement instrument, e.g. a pole, and/or a method for determining positions in the field of geodesics or on construction sites, e.g. by means of a construction laser.
The invention relates to a portable protective case (10) for transporting a measuring device (40), said protective case having an interior space which is designed to accommodate a measuring device, the interior space comprising at least one mounting which is specially designed to receive a specific device type with known dimensions. The protective case comprises a communications unit which is integrated into the protective case, a supply unit for the power supply of the communications unit, and checking means for checking the presence and the identity of a measuring device in the interior space. The invention also relates to a system consisting of a plurality of protective cases, to a method for preparing a measuring device during transport of the measuring device in an interior space of a case, to the use at a known location and to a method for preventing an unauthorized removal of a measuring device from the case.
A method and system that compensates for kinematic accelerations influencing a sensor measurement of working equipment such as an excavator. The method and system identify members of the working equipment that are movable relative to each other (e.g. stick, boom, bucket) and define a co-ordinate frame for each movable member. A kinematic relationship, preferably a kinematic chain. The sensor measurement is then modified according to the kinematic relationships and the relative position of each identified member.
G01C 9/08 - Means for compensating acceleration forces due to movement of instrument
G01C 19/54 - Erection devices for restoring rotor axis to a desired position with correction for acceleration forces due to movement of instrument
G01B 7/004 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring coordinates of points
G01B 7/14 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
E02F 3/43 - Control of dipper or bucket position; Control of sequence of drive operations
A system and method that compensates for local disturbances in magnetometer measurements for working equipment. For example, compensating for magnetometer disturbances caused by a stick, boom, and bucket of an excavator. The compensation is performed by generating or obtaining a magnetic model of movable members, determining the position of each of the movable members, calculating an estimated magnetic disturbance, and modifying the magnetometer measurement.
The invention relates to a laser tracker (12) for continuously tracking a reflective target and for determining the position of the target, comprising a base (40) that defines a vertical axis (41) and comprising a beam-deflecting unit (20a) for emitting measurement radiation (17, 21), wherein the beam-deflecting unit (20a) can be pivoted about the vertical axis (41) and a tilt axis (31) in relation to the base (40) in a motorized manner and a measurement axis (57) is defined by an emission direction of the measurement radiation (17, 21). Furthermore, the laser tracker has a fine distance measurement unit for precisely determining a distance to the target (65, 81, 101), an angle measurement functionality for determining an orientation of the beam-deflecting unit (20a) in relation to the base, and a target-seeking unit. The target-seeking unit has illuminating means (25, 25a-f) for illuminating the target (65, 81, 101), a camera (24) having a position-sensitive detector for detecting, in a position-determining manner, illumination radiation (28, 28a, 28b) reflected by the target (65, 81, 101), and a control and evaluating unit having seeking functionality for finding the target (65, 81, 101). In the performance of the seeking functionality, the target (65, 81, 101) is found by determining definite target position information on the basis of detected positions of reflected illumination radiation (28, 28a, 28b), additional target position information being taken into account depending on the embodiment, in such a way that measurement radiation (17, 21) can be oriented directly at the target (65, 81, 101).
A model-based scan line encoder is disclosed. A method of model- based scan line encoding includes defining a geometry model (502) for describing a scan line of a scan, the scan line including multiple scan points (506). The method further includes calculating a trajectory model representing an approximate pattern of deviation (510) of the multiple scan points (506) relative to the geometry model (502). The method further includes calculating multiple residuals, each of the residuals associated with a difference between the deviation (510) of the scan points (506) and the trajectory model. The method may further include compressing the residuals.
The invention relates to a method for aligning tracks of a roadwork machine (10), characterized by using a track alignment detection unit (1) that is attached to a first track unit (12) for allowing detection of an orientation of the first track unit (12), and frame orientation detection means (15) that are attached to the machine frame (11) for allowing detection of an orientation of the machine frame (11), the method comprising determining an initial orientation (50) of the machine frame (11), and determining an initial orientation (60) of the first track unit (12), determining whether a difference between a most recently determined orientation of the machine frame (11) and a most recently determined orientation of the first track unit (12) is within a predefined threshold value, initializing a pivoting of the first track unit (12), determining a changed orientation (60') of the first track unit (12) after the pivoting, and determining an orientation of the machine frame (11) after the pivoting.
E01C 19/00 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
G01C 15/00 - Surveying instruments or accessories not provided for in groups
15.
CONTROL OF IMAGE TRIGGERING FOR AERIAL IMAGE CAPTURING IN NADIR ALIGNMENT FOR AN UNMANNED AIRCRAFT
Method for aerial image capturing by means of an unmanned and controllable aircraft comprising a camera, more particularly a drone, during a flight manoeuvre of said aircraft, comprising continual determining of a camera position and alignment of an optical camera axis and acquiring of a series of aerial images. For each aerial image (21a-b) of said aerial image series, the capturing of the respective aerial image (21a-b) is triggered by flying through a respective image trigger region (33) with said aircraft, wherein the location of said respective image trigger region (33) is determined at least in each case by one trigger position assigned to said respective image trigger region (33) and triggered subject to the alignment of the camera axis when flying through said respective image trigger region (33), with respect to fulfilling a defined, maximum angle deviation relative to a predetermined spatial alignment.
The invention relates to a measuring device, in particular a video theodolite or video tachymeter, comprising a base, a support, a telescope optics having a lens, a physical target marking, an eyepiece, and a camera, further comprising an evaluation and control unit containing stored calibration parameters with respect to an image position indicating the target direction as target image position in the captured image, and a display for displaying a captured image having marking for the target image position. In order to inspect and/or restore, even after influencing the geometry between the physical target marking and the camera component part in the sighting unit for a (after the influencing no longer sufficiently existing, as the case may be) accordance between the target direction indicated by the physical target marking and the direction indicated by the marking for the target image position, a function - in form of an application on the user-device interface that can be called up - is provided according to the invention, by way of which this is possible with little expenditure and in a comparatively largely automated, that is, a user-guiding manner. To this end, in the framework of the function according to the invention, a special procedure, that is, a special sequence of sightings - and calibration measurements carried out in the respective targeting positions - is defined, which must be carried out within the framework of the function.
A co-located global navigation satellite system (GNSS) antenna (40) and beamforming antenna (20), where the phase centres of the two antennae are co-located in at least one axis, preferably the vertical axis. Differences in the phase centre locations can be compensated using, for example, orientation and/or sensor data.
The invention relates to a laser tracker (1) for determining the position of a target (80), comprising a beam source for generating measurement radiation (30); a base (140); a beam deflection unit (110) which can pivot with respect to the base (140) about two axes in a motorized manner, for the emission and alignment of the measurement radiation (30) and to capture at least one part of the measurement radiation (31) reflected onto the target (80); a first position-sensitive surface detector (10) and an evaluation and control unit for determining a point of impact (13) of the reflected measurement (31) on the surface detector (10) for generating an output signal in order to determine the position of said target (80). Said laser tracker (1) also comprises a calibration device (2) for use with a self calibrating function to determine the calibration parameters thereof with respect to a position and/or direction of the measurement radiation (30). The calibration device (2) comprises a second position-sensitive surface detector (20) on the base (140), to which measurement radiation (30) can be emitted from the beam deflection unit (110), and the evaluation and control unit is designed to determine a point of impact (14) from the measurement radiation (30) impacting on the second position-sensitive surface detector (20), through which at least one part of the calibration parameters can be determined. The invention also relates to a self-calibration method for said type of laser tracker (1).
The invention relates to a laser tracker (1) for determining the position of a target (80) and in particularly for the continuous tracking of the target (80), comprising a beam source for generating measurement radiation (30), an angle measuring function for determining a horizontal pivot angle and a vertical pivot angle, a distance measuring function and a position sensitive surface detector (10) for determining a point of impact (13) of the reflected measurement radiation (31) on the surface detector (10) and for generating an output signal in order to control a target tracking function. The laser tracker (1) also has a self-calibrating function for calibrating a beam offset (61) using a reflecting calibration device by determining of a point of impact (13) on the position sensitive surface detector (10) of the measurement radiation (31) reflected by the calibration device, and by determining an offset (71) between the point of impact (13) on the position sensitive surface detector (10) to the position of the center of the detector (15) thereof. Said invention is characterised in that the calibration device is a retro reflector (2) fixed to the laser tracker (1) or integrated into the laser tracker (1), said retro-reflector being designed to produce, in a two-dimensional range, coaxial retro reflection of measurement radiation (30) impacting on said retro-reflector, without an offset of the reflected measurement radiation (31) with respect to the direction of the impacted measurement radiation (30). The invention also relates to a self-calibrating method for a laser tracker (1).
The invention relates to a laser beam horizontal trueness testing device (10) for a laser beam projection device (20) for construction and/or interior design work. The laser beam projection device (20) is equipped with a beam self-leveling functionality. The laser beam horizontal trueness testing device (10) has a telescope (1) with an attenuating filter (2), a magnifying objective (3), and a flat image sensor (5) for capturing an image of a laser beam (L) incident on the objective (3). Components of the laser beam horizontal trueness testing device (10) further include a natural inclination compensator (6) and an analyzing unit (7) which is designed to automatically ascertain an image position of the laser beam (L) captured in the image by processing the image. According to the invention, the flat image sensor (5) is arranged on an image plane (4) of the objective (3), and the analyzing unit (7) is additionally designed to quantify the laser beam horizontal trueness by converting the ascertained image position into a laser beam inclination value using a conversion rule relating to calibration parameters which depend on a position of the image sensor (5) in the telescope (1).
The invention relates to a method for determining a spatial orientation of an auxiliary measurement object (50) for a laser tracker, said measurement object having reference features (52, 52a) which provide points of light. The tracker has a base, a support which can be pivoted in a motorized manner, a pivoting unit which can be rotated about a tilting axis in a motorized manner and which comprises an image capturing unit for capturing an image of the points of light, and a beam source for emitting a laser beam. According to the method, an image is captured in the direction of the auxiliary measurement object (50) with respective capturable points of light, and the spatial orientation of the auxiliary measurement object (50) is derived from image positions in the image for the points of light captured in the image using an image analysis. Furthermore, a local consideration criterion for the image analysis with respect to an appearance of an individual point of light in the image is defined or a global consideration criterion for the image analysis with respect to a spatial relationship between a number of points of light in the image is defined. A test is carried out to determine whether at least one of the points of light captured in the image satisfies the consideration criterion by comparing image information, provided by means of the captured image, relating to the point of light with the consideration criterion. If the consideration criterion is not satisfied, the point of light is not taken into consideration when deriving the spatial orientation.
G01S 17/02 - Systems using the reflection of electromagnetic waves other than radio waves
G01S 5/16 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using electromagnetic waves other than radio waves
Surveying system for measuring the position of a measuring point (1) on the ground, the surveying system comprising a survey pole (10) with a body (13) having a pointer tip (12) for contacting the measuring point (1) and position giving means for making available the coordinative determination of a referenced position, being placed on the body (13) with a defined spatial relationship relative to the tip (12), determination means for repeatedly determining the referenced position of the position giving means and evaluation means (17) for deriving the position of the measuring point (1), wherein the survey pole (10) further comprises an inertial measuring unit (18) placed on the body (13) with a defined spatial relationship relative to the position giving means, the surveying system further comprises IMU-processing means for repeatedly determining inertial state data based on measurements taken by the inertial measuring unit, and the evaluation means (17) are further configured for feeding a predefined filter algorithm with the repeatedly determined referenced position and the repeatedly determined inertial state data and deriving therefrom referenced attitude data for the survey pole (10), taking into account the defined spatial relationship of the inertial measuring unit (18) relative to the position giving means, using a DDF within the predefined filter algorithm, and further using the referenced attitude data for deriving the position of the measuring point (1).
G01C 21/16 - Navigation; Navigational instruments not provided for in groups by using measurement of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
23.
LASER TRACKER WITH HYBRID IMAGING METHOD FOR EXTENDING THE MEASURING RANGE
The invention relates to a laser tracker for determining a position and/or orientation of an auxiliary measurement object, comprising a base which defines a vertical axis, a pivotal support, and a rotatable pivoting unit with at least two optical assemblies and an image detecting unit. The optical assemblies can be moved along an optical axis of the pivoting unit, and a magnification factor is defined by a positioning of the optical assembly. The tracker further has a radiation source for emitting a laser beam, a distance measuring unit, an angle measuring functionality, and a control and processing unit with an object imaging functionality, wherein the optical assemblies are positioned relative to the auxiliary measurement object dependent on a triggered measurement such that an image is provided for the auxiliary measurement object on the image detecting unit with a particular image scale. At least one normal-distance range and a long-distance range are defined for a distance to the auxiliary measurement object by the object imaging functionality, and the magnification factor is set in a controlled manner by the control and processing unit dependent on the particular distance to the auxiliary measurement object when the object imaging functionality is carried out such that a substantially constant normal image scale is provided for each distance within the normal-distance range, and a long-distance image scale, which can vary depending on the respective distance, is provided for each distance within the long-distance range.
The invention relates to a hand-held distance-measuring device (1), comprising a housing (4), a distance-measuring unit, in particular a laser distance meter (20), for measuring distances (13, 14) to spatial points (10, 11) along an emission direction (9) in a space, an evaluating component (25), a dimensionally stable referencing support (3), and an angle-determining unit (33) for determining an angle of rotation (α, β) between the housing (4) and the referencing support (3), wherein the housing (4) and the referencing support (3) are designed in such a way and coordinated with each other in such a way that the referencing support (3) can assume a passive position, in which the referencing support is inserted into an recess (28) of the housing (4) or is fastened such as to lie flatly against the housing (4); the referencing support (3) can assume a referencing position, in which the referencing support is connected to the housing (4) at a first end of the referencing support by means of a joint such as to be rotatable at least about a vertical axis (19) and can be fixed at a reference point of a reference object (2) at a second end of the referencing support; and a position of the housing (4) with respect to the space, in particular in relation to the reference point, can be determined fully automatically when the referencing support (3) is fixed at the reference point. The invention further relates to a method for determining geometric data in the space by means of a hand-held distance-measuring device (1) and a computer program product for carrying out the method.
The invention relates to a laser tracker for continuous tracking of a target, with a beam source for generating measuring radiation (55), a base defining a vertical axis and a support, wherein the support is pivotable by motor power about the vertical axis relative to the base and thereby a horizontal pivot angle is defined. The tracker further comprises a beam directing unit (20) pivotable by motor power, which defines a vertical pivot angle for orienting the measuring radiation (55) and for receiving measuring radiation (55), an angle measuring functionality for determining the horizontal pivot angle and the vertical pivot angle, a distance measuring functionality and a photosensitive surface detector for detecting an incidence position of the reflected measuring radiation (55). The base has a self-calibration unit (60) with a first retroreflective reference target (70) and an optical assembly (50) functioning as a reducing lens. In order to determine a calibration parameter for the laser tracker, the self-calibration unit (60) can also be targeted with the measuring radiation (55) in such a manner that an optical beam path runs through the optical assembly (50) and the measuring radiation (55) strikes the first retroreflective reference target (70, 71), whereby a first calibration measurement with a simulated distance from the first retroreflective reference target (70) can be performed and the simulated distance is greater than an actually structurally existing distance (d') from the first retroreflective reference target (70).
The invention relates to a distance measuring method comprising at least the step of emitting at least one measurement signal to a target object, in which at least one start signal (S) is produced, and the measurement signal is back scattered from the target object as a target signal (Z). Said target signal (Z) is sampled at a sampling frequency and the relative position of the start signal (S) and the target signal (Z) is determined for deriving a distance to the target object from the relative position from the start signal (S) and the target signal (Z). The sampling frequency can be adjusted and is set in accordance with a large distance to the target object.
The invention relates to a distance measuring method comprising at least the step of emitting at least one measurement signal to a target object, in which at least one start signal (S) is produced, and the measurement signal is back scattered from the target object as a target signal (Z). Said target signal (Z) and optionally also the start signal (S) is sampled in a first and a second sampling at various sampling rates and determines the distance to the target object from the relative position from the start signal (S) and target signal (Z).
The invention relates to a method for determining geometrical data in a space, with a measurement sequence having a measurement of a first distance (13) to a first target point (10) by emitting a laser beam (7) in a first emission direction (8), and a measurement of a second distance (14) to a second target point (11) by emitting a laser beam (7) in a second emission direction (9), wherein the geometrical data comprises a distance (15) between the two target points (10, 11) and/or a solid angle (a) between the first emission direction (8) and the second emission direction (9). The invention is characterized by: detecting a series of images (51-55), wherein the images (51-55) have at least one common image area (56-59), and at least one first target image (51) with a mapping (10') of the first target point (10) is detected in temporal relation with the measuring of the first distance (13), and a second target image (52) with a mapping (11') of the second target point (11) is detected in temporal relation with the measuring of the second distance (14); relating the detected images (51-55) to one another by means of image processing and by means of the at least one common image area (56-59); determining a distance (16) between the mappings (10', 11') of the target points (10, 11) in the images (51-55) put in relationship with one another; and determining the geometrical data on the basis of the distance (16) between the mappings (10', 11'). The invention further relates to a handheld distance measurement device (1) and a computer program product for performing this method.
Measuring apparatus comprising a tunable laser diode for generating a monomode measurement radiation, said laser diode being designed as a laser beam source in such a way that an emission wavelength of the measurement radiation is variable within a wavelength range by means of the variation of a tuning parameter, comprising an absorption medium defining absorption lines within the wavelength range, comprising a memory having a line atlas for the absorption medium, comprising a detector for determining an absorptivity and comprising a control and evaluation unit for regulating the emission wavelength by means of the at least one tuning parameter in a manner dependent on the absorptivity determined in such a way that the emission wavelength remains stable. The control and evaluation unit is designed in such a way that when a calibration mode is performed, an orientation in the line atlas is effected by virtue of the fact that defined sample measurements (71) are carried out with variation of at least one measurement parameter, sample measurement results (72) are derived from the sample measurements (71), the sample measurement results (72) are compared (75) with at least one reference (73, 74) based on the stored line atlas, wherein, in the context of the comparison, the sample measurement results (72) are coordinated with at least the reference (73, 74), and the orientation in the line atlas is determined (76) in a manner dependent on the coordination and on the basis of an algorithmic evaluation, and the emission wavelength of the measurement radiation can be determined and/or set (77) in a manner dependent on the determined orientation in the line atlas.
G01S 17/36 - Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal
G01S 17/10 - Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
30.
LASER TRACKER COMPRISING INTERFEROMETER AND ABSOLUTE DISTANCE MEASURING UNIT, AND CALIBRATION METHOD FOR A LASER TRACKER
Laser tracker (90) for continuously tracking a reflective target (97) and for determining the distance with respect to the target (97) comprising a beam directing unit (95) for emitting a measurement radiation (96) and for receiving at least part of the measurement radiation (96) reflected at the target (97). The laser tracker (90) additionally comprises an interferometer for determining a change in distance with respect to the target (97) comprising a laser diode for generating the measurement radiation (96) such that the measurement radiation (96) is present in coherent monomode fashion, and an absolute distance measuring unit for determining a measured distance value for a distance with respect to the target (97). A control and evaluation unit is designed in such a way that an interferometer wavelength of the measurement radiation (96) is determined by defined sample measurements being carried out with variation of the distance with respect to the target (97), wherein the sample measurements are effected for at least two different distances with respect to the target (97), the measurement radiation (96) is constantly oriented towards the target (97) and, with the interferometer wavelength being kept stable, an interferometer output variable is determined for each of the at least two different distances with respect to the target (97). Moreover, at least two measured distance values for the two different distances with respect to the target (97) are provided by the absolute distance measuring unit and the interferometer wavelength of the measurement radiation (96) is determined at least on the basis of the at least two measured distance values and the interferometer output variables respectively determined.
G01S 17/10 - Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
G01S 17/36 - Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal
A distance measuring device comprises a light source (101) emitting light, and such an integrated electro-optic modulator (21, 22, 23) arranged such that the emitted light passes through an optical waveguide of the electro-optic modulator (21, 22, 23) in a first direction before being emitted from the distance measuring device, and after being reflected from a target passes through the electro-optic modulator (21, 22, 23) in a second direction which is opposite to the first direction, The forward electro-optic response of a modulating region (17) of the electro-optic modulator (21, 22, 23) is the same as the backward electro-optic response, and a centre of gravity of the modulation is independent of modulation frequency.
G01S 7/491 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group - Details of non-pulse systems
G01S 7/499 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group using polarisation effects
G01S 17/36 - Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal
32.
ELECTRO-OPTIC MODULATOR AND ELECTRO-OPTIC DISTANCE-MEASURING DEVICE
An electro-optic modulator comprises a waveguide (2) of a nonlinear optical material and an electrode line (3) for generating an electrical field in a modulating region (17) of the waveguide (2) when a voltage is applied to the electrode line (3). thereby modulating light passing through the waveguide (2). Therein ▪ the forward electro-optic response of the modulating region (17) is the same as the backward electro-optic response; and ▪ the electro-optic response has a band-pass or a low-pass characteristic. A distance measuring device comprises a light source (101) emitting light, and such an electro-optic modulator arranged such that the emitted Light passes through the electro-optic modulator in a first direction before being emitted from the distance measuring device, and after being reflected from a target passes through the electro-optic modulator in a second direction which is opposite to the first direction.
G02F 1/035 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure
G01S 17/32 - Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
G02F 1/225 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference in an optical waveguide structure
G02F 1/03 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect
The invention concerns a method, device and system for detecting buried services (1) by electromagnetic means with introducing an artificially generated electrical detection signal (5) indirectly via soil (12) to the buried service (1), detecting an electromagnetic field (4) originating from the introduced underground detection signal (5), which is preferably following along the buried services (1), by a mobile detection unit (3) above ground, and determining the proximity of the structure (1) to the detection unit (3) according to the detected electromagnetic field (4) of the detection signal (5). Therein, the soil conducted detection signal (5) is supplied via a mains socket (8).
G01V 3/08 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
The invention relates to a laser system comprising a laser receiver (10) collaborating with a laser emitter (20, 20'). The laser emitter (20, 20') is designed to provide a laser light plane (23, 23') and comprise a control unit (25) connected to a communication signal receiver (21) in order to work and compute incoming communication signals from the laser receiver (10). The laser receiver (10) comprising a communication signal transmitter (6) for communicating with the laser emitter (20, 20'), a linear laser light photo sensor (1) and an acceleration sensor (4) both connected to a circuitry (3), which is designed to derive a movement of the laser receiver (10) with respect to the detected laser beam (22, 22') of the laser emitter (20, 20') from computing and correlating the signals of the acceleration senor (4) and the laser light photo sensor (1). The control unit (25) of the laser emitter (20, 20') is provided with an adjustment unit (24) and adjustment is carried out by the adjustment unit (24) in dependence of the worked and computed incoming communication signals of the laser receiver (10). The invention also relates to a laser system comprising a laser emitter and such a laser receiver (10) and the use of such a system for guiding and controlling a construction machine.
The invention relates to a laser system (100) comprising a laser receiver (10) and a laser emitter (20) and to a method using this system (100). The laser receiver is designed for locating a laser beam (22) relative to the laser receiver (10) by its laser light photo sensor (1). The laser receiver (10) has an acceleration sensor (4) providing a signal indicating a movement of the laser receiver together with a movement direction and an acceleration of this movement and a circuitry (3) connected to said photo sensor (1) and to the acceleration sensor (4) designed to compute and correlate the signals of photo sensor (1) and acceleration sensor (4) and to weight the information derived from the acceleration sensor (4). Laser receiver and laser emitter of the laser system are both provided with communication means, so that by communicating the weighted information the laser plane can be adjusted and/or readjusted in response to a movement of the leaser receiver.
Camera system (1) comprising a zoom lens, more particularly for use in a measuring apparatus, having a tube-like guide system having a tube body (2), which defines a tube interior (3) and an optical axis (4), a sensor module (50) disposed downstream of the guide system and having an optical sensor (51) for detecting optical radiation, at least one first carriage (20) which has an optical assembly having at least one optical element (27-29) and an optical system carrier (200), is arranged in a manner linearly movable along the optical axis (4) in the tube interior (3) and is mounted in a manner guided substantially without play through the tube body (2) in a plane perpendicular to the optical axis (4), and a first drive system (60) for moving the first carriage (20) along the optical axis (4), said first drive system being decoupled from the guide system, characterized in that the first carriage (20) has a first position transmitter element (21, 21'), and a first scanning sensor (71, 71') is configured for detecting the first position transmitter element (21, 21') in such a way that a position-dependent first scanning signal linked to the linear position of the first carriage (20) can be generated, such that a linear position of the first carriage (20) can be derived.
G02B 7/10 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
G01C 15/00 - Surveying instruments or accessories not provided for in groups
37.
METHOD FOR DETERMINING A CHANGE IN DISTANCE BY MEANS OF INTERFEROMETRY
The invention relates to a method for determining a change in distance to a moving and reflective target by means of interferometry, comprising the generation of laser radiation, wherein at least one reference radiation and one measurement radiation are derived from the laser radiation, the emission of the measurement radiation to the target, and the detection of at least part of the measurement radiation reflected at the target. In addition, a superposition of the reflected measurement radiation with the reference radiation is generated and detected, an interferometer output variable is derived on the basis of the detected superposition, and a time-resolved output variable curve is produced from the derived interferometer output variable. In addition, the output variable curve is continually checked in that the output variable curve is continually read out in a time-resolved manner, at least one motion parameter for a relative motion between the measuring device and the target is derived continually in accordance with the output variable curve read out in a time-resolved manner, and the motion parameter is continually compared with a motion criterion for the target, wherein the motion criterion indicates a relative motion of the target in the direction of the measurement radiation that can actually be performed, that is practically plausible, and that is empirically accepted. Information is provided in accordance with the comparison, in particular if the motion criterion is not met.
G01S 7/48 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group
38.
SKETCHING FUNCTIONALITY FOR A HANDHELD FIELD DEVICE
Handheld field device (1) for use with outdoor application equipment (7) for measuring and/or surveying, adapted for entry and display of blueprint data, comprising a graphical user interface (2) for providing line segment data entry fields and for displaying input line segments (15), and storing and calculation means adapted for accepting, storing and editing line segment data associated with said input line segments (15), wherein the line segment data comprises a starting point (12), an orientation and a length of each line segment (15), characterized in that the storing and calculation means are designed for the provision of a multitude of defined orientations, and the graphical user interface (2) is designed for the provision of a defined orientation selection area (130), comprising a multitude of orientation selection fields (131-138) for entry of an orientation of a line segment (15), wherein each of the orientation selection fields (131-138) is assigned to one of the defined orientations.
A laser tracker having: a base defining a standing axis; a beam steering unit for emitting a measurement radiation, wherein the beam steering unit can swivel by means of a motor around the standing axis and a tilt axis relative to the base, and a measurement axis is defined by an emission direction of the measurement radiation; a distance measuring unit for determining the distance to the target; and angle measurement functionality for determining an alignment of the beam steering unit. The laser tracker further comprises a target-seeking unit having lighting means and at least one target-seeking camera having a position-sensitive detector, wherein the one target-seeking field can be illuminated by means of the lighting means and a search image for the position-dependent identification of the target can be detected with the target-seeking camera and at least part of the lighting beam reflected on the target can be determined as a search image position. In addition, an overview camera is provided, wherein an overview field of vision of the overview camera overlaps with the target-seeking field, and an overview image (61b) showing the visual range can be detected with the overview camera, and the target-seeking camera and the overview camera are arranged in a known position and alignment relation relative to each other. In the implementation of a target preparation functionality by a processing unit, a graphic marking (66a-d) representing the target is superimposed by means of image processing on the overview image (61b) depending on the search image position.
The invention relates to an alignment method and an associated construction concept for an optoelectronic distance-measuring device. The latter comprises an assembly having a radiation source for emitting an optical transmission radiation, a detector for receiving an optical reception radiation and a printed circuit board, which are arranged in a rigid local relationship with respect to one another, and also an optical unit carrier with a transmission optical unit and a reception optical unit. In this case, a transmission direction is defined by the radiation source and the transmission optical unit and a reception direction is defined by the detector and the reception optical unit. Furthermore, the transmission optical unit and the reception optical unit have different focal lengths. The alignment method produces a sought orientation of the transmission direction relative to that of the reception direction. According to the invention, alignment is effected by displacement of the entire assembly relative to the optical unit carrier, wherein the displacement, as a result of a leverage effect of the different focal lengths, brings about in each case displacement-governed changes in direction angle of transmission direction and reception direction, said changes having different magnitudes, as a result of which the orientation of the transmission direction relative to the reception direction is varied.
Laser-based measuring apparatus for measuring a position of a distant target (85), in particular in the form of a laser tracker (1) for detecting the position and the orientation of a measuring aid (80) which can be moved in space, having a base (40) which defines a vertical axis (9), a support (20) which is rotatable about the vertical axis (9) relative to the base (40), a telescope unit (10) which is rotatable about a tilt axis (8) relative to the support (20) and has means for emitting a laser beam (36), a first bearing apparatus (60) for bearing the telescope unit (10) on the support (20), and a second bearing apparatus (70) for bearing the support (20) on the base (40), characterized in that the first bearing apparatus (60) is in the form of a fixed/loose bearing apparatus, having a shaft (63), the longitudinal axis of which runs coaxially with the tilt axis (8), a fixed bearing (61) and a loose bearing (62), and/or the second bearing apparatus (70) is in the form of a fixed/loose bearing apparatus, having a shaft (73), the longitudinal axis of which runs coaxially with the vertical axis (9), a fixed bearing (71) and a loose bearing (72).
G01C 15/00 - Surveying instruments or accessories not provided for in groups
F16C 19/04 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
F16C 19/14 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
42.
LASER TRACKER WITH POSITION-SENSITIVE DETECTORS FOR SEARCHING FOR A TARGET
The invention relates to a laser tracker (12) for continuously pursuing a reflective target and for determining the position of the target, comprising a base (40) which defines a vertical axis (41), a beam guiding unit for emitting a measurement beam, the beam guiding unit being pivotable by motor relative to the base (40) about the vertical axis (41) and an inclination axis (31), and a measurement axis (57) being defined by an emission direction of the measurement beam. The invention further comprises a precision distance measurement unit for precisely determining the distance to the target, an angle measurement function for determining alignment of the beam guiding unit relative to the base (40) and a target search unit. The target search unit has illumination means (25) for illuminating the target, a first camera (24) with a first position-sensitive detector, a first image being acquirable with the first camera (24) and, in the first image, at least one part of the illumination beam reflected on the target being determinable as a first target position, and a control and evaluation unit. The target search unit also has a second camera (24) with a second position-sensitive detector, a second image being acquirable with the second camera (24) and, in the second image, at least one part of the illumination beam reflected on the target being determinable as a second target position and the second camera (24) being arranged with a camera positioning that is known or fixed in relation to the first camera (24) in such a manner that the fields of vision of the first and second cameras (24) at least partially overlap. When the search function is operated, the target is located in relation to the first and second target positions.
The invention relates to an optoelectronic distance measuring device, comprising a transmitting unit and comprising a receiving unit of an electronic evaluating unit. The transmitting unit has a circuit board, a semiconductor laser, and a laser diode driver for transmitting high-frequency intensity-modulated optical radiation. In order to receive a component of the optical radiation reflected by a target object by means of a photosensitive electrical component, the receiving unit is equipped with an electrical output signal as a received signal, a conditioning unit for conditioning the received signal, and an analog/digital converter for digitizing the conditioned received signal. The electronic evaluating unit determines a distance from the distance measuring device to the target object on the basis of a signal propagation time using the digitized received signal. The semiconductor laser is attached to the circuit board as a laser substrate that does not have a housing.
The invention relates to an electro-optical distance-measuring device, more particularly a laser rangefinder, with a transmitting unit for transmitting intensity-modulated optical radiation, a receiving unit for receiving a portion of the optical radiation reflected back from a target in a photosensitive electrical component and converting it into an electrical received signal, an input filter for filtering the received signal, an analogue-to-digital converter for digitising the filtered received signal and an electronic analysis unit that calculates the distance from the rangefinder to the target object on the basis of a signal propagation time using the digitised received signal. The input filter is implemented as a time-discrete and continuous-value filter structure, more particularly a digital filter structure.
G01S 7/483 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group - Details of pulse systems
G01S 17/10 - Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
45.
LASER DIODE AS INTERFEROMETER-LASER BEAM SOURCE IN A LASER TRACKER
Laser tracker (70) for continuous tracking of a reflecting target and for determining the distance to the target, said laser tracker having a base defining a standing axis, a beam steering unit for emission of a measuring radiation and for receiving at least a part of the measuring radiation reflected by the target, wherein the beam steering unit is motorized to be pivotable relative to the base around the standing axis and a tilt axis extending substantially orthogonal to the standing axis. Furthermore, the tracker has a distance measuring unit (10) configured as an interferometer (10) for determining a change in distance to the target by means of interferometry, an interferometer laser beam source (20) for generating the measuring radiation for the interferometer (10) and an angle measurement functionality for determining an alignment of the beam steering unit relative to the base. The interferometer laser beam source (20) is configured as a laser diode (20), and the laser diode (20) is further so configured that the measuring radiation can be generated monomodally in the longitudinal direction and has a defined emission wavelength and a coherence length of at least 10 m.
The invention relates to an aerial camera (1), comprising at least one objective (13), a number of optoelectronic and/or electronic components (2b, 3b, 4), and a housing (1a), which comprises the at least one objective (13) and the optoelectronic and/or or electronic components (2b, 3b, 4), wherein the optoelectronic and/or electronic components (2b, 3b, 4) are arranged next to one another and/or one above the other in the housing (1a) in at least two different planes (2, 3), in particular planes arranged at least approximately parallel to one another, and wherein the housing (1a) has at least one cooling device (10) for cooling the optoelectronic and/or electronic components (2b, 3b, 4). The cooling device (10) has at least one cooling channel (11) that is integrated in the housing (1a) and extends between the at least two different planes (2, 3) having the optoelectronic and/or electronic components (2b, 3b, 4). A gaseous fluid flows through the at least one cooling channel for the purpose of cooling, and the at least one cooling channel is completely separated from the gaseous surroundings of the optoelectronic and/or electronic components (2b, 3b, 4).
G03B 15/00 - Special procedures for taking photographs; Apparatus therefor
G03B 17/55 - APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR - Details of cameras or camera bodies; Accessories therefor with provision for heating or cooling, e.g. in aircraft
The invention relates to a measuring system for marking a known target point (32) in a coordinate system, comprising a mobile marking unit (20) and a geodetic measuring device, wherein the marking unit (20) is designed in such a way that a marking unit position (21) can be determined highly precisely. The measuring device has at least one sighting unit, an angle measurement functionality, and a camera for capturing a camera image (12). The measuring system also has a target point position of the target point (32) stored in a database, an output unit (11) on which the camera image (12) can be presented, and a control and processing unit. The measuring system further has a presentation functionality, wherein a spatial deviation between the marking unit position (21) and the target point position is presented graphically on the output unit (11) in a first direction by means of a first deviation display (17), wherein the first deviation display (17) indicates a distance of the target point position from a plane defined by the measuring device and the marking unit (20), and in a second direction by means of a second deviation display (18), wherein the second deviation display (18) indicates a distance of the target point position from a normal to the plane that is defined by the marking unit position (21). The deviation in the first direction is presented independently of the deviation in the second direction.
The invention relates to a geodetic surveying device, more particularly a total station or a theodolite, with at least one sighting unit pivotable about two axes, wherein the sighting unit defines a target direction in a coordinate system and has a camera with a current range of view for capturing a camera image (10) substantially in the target direction. Object data stored in a database, wherein the object data is stored with a respective position reference indicating a position in the coordinate system is additionally provided, as well as a graphical output unit (11) on which the camera image (10) and the object data can be displayed, and a control and processing unit. The surveying device further comprises a filter functionality, with dynamic filtering, wherein the object data is filtered in the dynamic filtering on the basis of the current range of view, and static filtering, wherein the object data is filtered in the static filtering based on a user-selectable or specifiable selection criterion. In addition, the object data filtered by the dynamic and static filtering is graphically displayed on the output unit (11) by means of markings (20, 21) representing the object data conjointly with the camera image (10), wherein the markings (20, 21) are displayed at a respective point in the camera image (10) referenced by the position reference.
There is provided a method and system of recalibrating a sensor, preferably by determining a sensor bias for an Inertial Measurement Unit (IMU) in a vehicle. The sensor bias is determined by taking measurements at three different attitudes, determining a sphere of possible bias values for each measurement, and then determining an intersect of the three spheres.
G01P 21/00 - Testing or calibrating of apparatus or devices covered by the other groups of this subclass
G01C 25/00 - Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
50.
A METHOD AND SYSTEM OF RECALIBRATING AN INERTIAL SENSOR
There is provided a method and system of recalibrating a sensor, preferably by determining a sensor bias for an Inertial Measurement Unit (IMU) in a vehicle. The sensor bias is determined by taking a measurement from the IMU at a first orientation, and then taking a second measurement from the IMU at a second orientation that is rotated approximately 180° from the first orientation.
G01P 21/00 - Testing or calibrating of apparatus or devices covered by the other groups of this subclass
G01C 25/00 - Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
There is provided a method and system of recalibrating a sensor, preferably by determining a sensor bias for an Inertial Measurement Unit (IMU) in a vehicle. The sensor bias is determined by automatically taking measurements when the vehicle is stationary and, once sufficient measurements have been taken, determining the sensor bias to recalibrate the sensor.
G01P 21/00 - Testing or calibrating of apparatus or devices covered by the other groups of this subclass
G01C 25/00 - Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
52.
A METHOD AND SYSTEM OF DETERMINING AN INERTIAL SENSOR ORIENTATION OFFSET
Inertial sensors are typically mounted at an angular offset relative to a chassis, such as a vehicle chassis or electronic device chassis. This offset can influence the measurements of the angular orientation of said chassis derived from inertial sensors. There is provided a method of determining a sensor orientation offset relative to a chassis by obtaining a first inertial sensor measurement, rotating the chassis approximately 180°, obtaining a second inertial sensor measurement; and then determining the offset from the two inertial sensor measurements.
G01P 21/00 - Testing or calibrating of apparatus or devices covered by the other groups of this subclass
G01C 25/00 - Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
The invention relates to an electro-optical distance measuring device, comprising a laser driver (10) for a laser diode (3) for emitting laser light pulses, the laser driver having a laser diode voltage supply (31) for providing a voltage below a laser threshold voltage of the laser diode, an inductive component (12) in a supply path of the laser diode, and an electronic switching element (13), which is arranged in an interacting manner in such a way that a current flow through the inductive component can be generated in a first switching position of the switching element and the current flow can be conducted through the laser diode in a second switching position of the switching element. One of the laser light pulses can be emitted as the result of a switch from the first switching position to the second switching position, and laser light cannot be emitted in the static first switching position or the static second switching position.
H01S 5/068 - Stabilisation of laser output parameters
H03K 3/57 - Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback the switching device being a semiconductor device
An electronic light detection circuit for detecting an intensity modulated light signal on a photosensitive element under backlight condition. The circuit comprises the photosensitive element, in particular as a light position detector for detecting a striking position of the light signal spot within a detection window, an amplifier with high input resistance connected to an output of the photosensitive element and a backlight suppression circuitry. The backlight suppression circuitry is connected to the output of the photosensitive element in parallel to the amplifier and comprises an electronic active resonator structure. The active resonator structure is designed in such a way to provide a load impedance to an output of the photosensitive element with a low load impedance for low frequencies for suppression of natural and artificial backlight-saturation of the photosensitive element and a high load impedance at the frequency of the intensity modulated light signal.
The invention relates to a positioning method for continuously determining the spatial position of an auxiliary measuring instrument, which has several auxiliary-point markings in a fixed, known spatial distribution relative to one another. In the method, camera images of the auxiliary-point markings are continually recorded using a camera that has a surface sensor comprising a plurality of pixels, and read-out processes are continually performed, in which the pixels are read out with regard to a respective current exposure value. Furthermore, image positions of the imaged auxiliary-point markings in the respective current camera image are determined and the current spatial position of the auxiliary measuring instrument is derived on the basis thereof. According to the invention, respective current areas of interest on the surface sensor are continually set according to a collection of image positions determined in at least one previously recorded camera image. The current image positions are then determined exclusively in consideration of only at most those current exposure values that are received by pixels of the surface sensor lying within the currently set areas of interest.
G01S 5/16 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using electromagnetic waves other than radio waves
H04N 3/14 - Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by means of electrically scanned solid-state devices
The invention concerns a light beam position detector with a detection window, for detecting a position of a striking light beam within the detection window, which detection window comprises a first PSD based on the lateral photoelectric effect, in particular with two output signals dependent on the striking position of the light beam, and an electronic readout circuitry for the PSD. The detection window further comprises at least a second PSD based on the lateral photoelectric effect, being aligned in a geometrical line in succession with the first PSD, so that the first and the at least second PSD define the detection window.
The invention relates to a surveying appliance (10) for surveying targets, having a targeting unit (13), a remote control unit (1) for prompting changes in the orientation of the targeting unit (13), equipped with measurement functionality for determining a three-dimensional orientation of the remote control unit (1) and/or for determining movements by the remote control unit (1), and an evaluation and control unit (4), characterized in that the extent and/or speed of the changes in the orientation of the targeting unit (13) can be scaled to corresponding changes in an orientation or speed of change of orientation of the remote control unit (1) such that at least two targeting modes which differ from one another at least in terms of a level of transmission ratio are provided. Furthermore, a handheld, moving remote control unit (1) for a surveying appliance (10) according to the invention, a computer program product for providing, controlling and performing a targeting functionality for the surveying appliance (10) according to the invention and a method for tracking and surveying targets using the surveying appliance (10) according to the invention are provided.
The invention relates to a geodetic measuring instrument (1), in particular a theodolite or a total station, for determining the position of a target point, comprising a sighting apparatus (5), in particular a telescope, wherein the sighting apparatus (5) can be pivoted in a motorized manner with respect to a base (11) of the measuring instrument (1) in order to change the orientation of the sighting apparatus and has at least one objective unit (21) that defines an optical target axis (6), angle measurement functionality for detecting the orientation of the target axis (6) highly precisely, and evaluating means for storing data and controlling the orientation of the sighting apparatus (5), characterized by an eye image recording unit (4, 4'), which is designed to record eye images of an eye (3) of a user, and characterized in that the evaluating means are designed to perform automatic sighting functionality regardless of viewing direction in such a way that the following occurs automatically after the function has started: at least one eye image is recorded, a viewing direction of the user eye (3) is determined, or eye information suitable for deriving a viewing direction of the user eye (3) is determined, by means of image processing on the basis of the at least one eye image, and the orientation of the sighting device (5) is changed in a motorized manner according to the viewing direction of the user eye (3) or according to the eye information.
Rotating construction laser device (28) with a grade mechanism (1), comprising a lens barrel (21) with a laser optical system (20), a grade arm (2), which is tiltably supported on a frame structure (8) in an XZ-plane, a tilt 5 sensor (10) which is provided at the grade arm (2) and is configured to detect a level position of the grade arm (2), a tilting mechanism (22), which is provided on the frame structure (8) and is designed to tilt the grade arm (2) relative to the XZ-plane, a code element (12', 12'') and a 10 position detection device for providing and detecting a feedback position information, and a levelling mechanism (23), which supports the lens barrel (21) tiltably and is designed to tilt the lens barrel (21) in order to have the level position detected by the tilt 15 sensor (10) and therewith to level the grade arm (2), characterised in that the code element (12', 12'') or the position detection device is arranged directly on the grade arm (2), and the feedback position information directly depends on the position of a reference point on the grade 20 arm (2), the reference point being defined by the code element (12', 12'') or the position detection device, respectively, thus allowing to deduce a position of the grade arm (2) directly from the feedback position information, and/or to calculate a tilting angle (β, β1) of 25 the grade arm (2) with respect to the lens barrel (21) directly from the feedback position information.
The invention relates to an electro-optical distance measuring device for measuring distances in a contactless manner, comprising at least one laser distance-measuring module, which has a laser source for emitting an optical measuring light beam in the direction of an object and which has a receiver for detecting reflected portions of the optical measuring light beam, and comprising an analyzing and control unit for determining a distance on the basis of the received portions of the optical measuring light beam. According to the invention, criteria are defined and stored which characterize a determined gesture for triggering the distance measurement, said gesture being carried out by a user using a test body that crosses the measuring light beam in an encoded manner. Additionally, the analyzing and control unit is designed to carry out a measurement-triggering gesture mode in which reflected portions of the optical measuring light beam are continuously detected automatically and the continuously detected reflected portions are analyzed with respect to characteristic variables, said variables being dependent on a gesture that crosses the measuring light beam by means of a test body in an encoded manner. The characteristic variables are used to test whether said variables correspond to the defined criteria so that the gesture that is carried out by the user is identified as the gesture for triggering the distance measurement if the characteristic variables correspond to the criteria. Finally, a measurement of the distance to the object can be automatically triggered in response to an identification of the gesture for triggering the distance measurement.
G01S 7/48 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group
G01S 17/08 - Systems determining position data of a target for measuring distance only
An integrated terrain modeling system is disclosed. The integrated terrain modeling system has a site module. The site module includes a database having a terrain model of a site. The integrated terrain modeling system has a first field unit which includes a sensor operable to generate geodetic data of the site formatted in a first format. The system also has a further field unit which includes a sensor operable to generate geodetic data of the site formatted in a further format. The integrated terrain modelling system has an integration system operable to manipulate the geodetic data generated by the first filed unit and the further filed unit to be in a common format, thereby to provide seamless integration of the geodetic data at the site module to update the terrain model.
According to the invention, the construction measuring device (10) has a functionality for modifying the orientation of the sighting unit (13) in a manually controllable manner, within the framework of which the orientation of the sighting unit (13) is dynamically modified by the first or second rotary drive, according to a current direction and a current distance from a defined central anchor display point to a currently marked display point. The respective current direction defines an orientation modifying direction and the respective current distance defines an orientation modifying speed for changing the orientation of the sighting unit (13).
The invention relates to a measuring appliance (10) in which inputted or measured spatial points (1, 2, 3, 4, 5, 6) that form a quantity of spatial points can be stored, and a horizontal projection representation or spatial representation of at least some spatial points (1, 2, 3, 4) from the quantity of spatial points can be displayed, said points being at least partially connected by lines. According to the invention, the measuring appliance (10) has a representation-changing functionality in the framework of which, according to a line selected on the user side from the lines displayed in a horizontal projection representation (A) or a spatial representation, in an automatically controlled manner by means of the evaluation and control unit: a virtual surface is defined by the selected line and a direction provided as the vertical; a subset of spatial points (1, 2, 5, 6) is selected from the quantity of spatial points, lying inside a buffer zone surrounding the virtual surface in a defined manner; and a vertical projection representation (B) of exclusively such spatial points (1, 2, 5, 6) pertaining to the subset is displayed on the display.
The invention relates to a method for determining, with geodesic precision, the position of a target point on a target object (15) by using a geodesic measuring device (1), said method comprising a sighting device, particularly a target telescope, which can be pivoted in relation to a base of the measuring device in order to alter its alignment, and which sighting device comprises at least one objective unit that defines an optical line of sight, an electronic distance measuring unit, and a thermal imaging camera for recording a thermal image in the direction of the optical line of sight. In addition, an angle measuring function is provided for recording, with high precision, the line of sight alignment, and a control unit is provided for controlling the angle measuring function, the thermal imaging camera, and particularly the alignment of the sighting unit. According to the invention, in a thermal imaging mode when a measurement procedure is triggered, position data of the sighted target point which are determined in said measurement procedure are linked to temperature information which is read out from the thermal image for the target point at which the line of sight is aimed. In particular, the position data of the target point is stored in correlation with the temperature information.
The invention relates to a portable optical sensor module (1) having at least one locking device (2) disposed on an outer side (1a, 1b) of the portable optical sensor module (1) for releaseably attaching the portable optical sensor module (1) to a carrier platform (3). The at least one locking device (2) comprises a folding handle device (4) forming a carry handle (4a) for the portable optical sensor module (1) in an opened locked state of the at least one locking device (2).
A method and system are provided for determining the angle of steering of a vehicle, particularly an agricultural vehicle, by determining vehicle yaw rate, determining vehicle speed, determining hydraulic flow in a hydraulic steering assembly connected in parallel with a manual hydraulic steering circuit of the vehicle, and processing the yaw rate, speed, and hydraulic flow data to determine the angle of steering of the vehicle.
B62D 123/00 - Fluid pressure supply for vehicle equipment, e.g. for power-assisted steering; Presence, failure or threshold values thereof; Lubricating or other fluid capacities
B62D 5/06 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
ROBOTIC SURVEYING INSTRUMENT AND METHOD FOR THE AUTOMATED AUTOCOLLIMATION OF A TELESCOPE OF A SURVEYING INSTRUMENT COMPRISING AN AUTOCOLLIMATION TARGET
The invention relates to a method for automated autocollimation as an alignment of a telescope of a surveying instrument, the telescope defining an optical axis, such that the optical axis is perpendicular to a reflective surface of an autocollimation target, in particular a coated plane mirror. The method comprises the following steps: a) aligning the telescope with the autocollimation target; b) illuminating a reticle in the telescope; c) focusing the telescope on infinite; d) acquiring the autocollimation target and the illuminated reticle (1) reflected by the reflective surface, or the illuminated reticle, by means of an image acquisition device arranged in the telescope or a second telescope; e) determining the reticle center in the image; f) determining the horizontal distance (Δpx) and the vertical distance (Δpy) of the reticle center from the optical axis of the telescope in the image; and g) converting the horizontal (Δpx) and vertical (Δpy) distances of the reticle center into a horizontal aberration angle (ΔH) and a vertical aberration angle (ΔV) of the current alignment of the telescope from the autocollimation alignment of the telescope.
A rotating laser (1) according to the invention has a source of electromagnetic radiation (9), in particular a laser beam source, for production of a reference beam, and deflection means, which can rotate about a rotation axis, for rotating transmission of the reference beam, by which means a laser area (34a, 34b) is defined, and with the reference beam passing over a reference path, and with at least a portion of the reference path being perceivable visually and/or by means of a detector on a surface (32) as a reference line (35a, 35b). Furthermore, swivelling means are provided for swivelling the rotation axis about at least one swivelling axis, in particular about two swivelling axes as well as a range measurement unit for measurement of ranges to points on the reference path, and control means for controlling the swivelling means and for comparison of ranges. Furthermore, the rotating laser (1) has a functionality for perpendicular alignment of the laser area (34a, 34b) relative to the surface (32), with the control means being designed such that the laser area (34a, 34b) is automatically variably inclined relative to the surface (32) by swivelling of the rotation axis, with a reference line range from the reference line (35a, 35b) to the rotating laser (1) being determined for each of the respective inclination angles, and with that inclination angle of the laser area (34a and 34b) being determined as the perpendicular inclination angle at which the laser area (34a, 34b) includes the reference line (35a, 35b) with the respective shortest determined reference line range, and therefore being perpendicular to the surface (32).
The invention relates to a construction surveying device (10) for measuring and marking space points in buildings, having a base (11), an upper part (12) which is mounted on the base in such a manner that said part can be rotated about an axis of rotation, a sighting unit (13) having a laser source which is designed to emit a laser beam (14) and a laser light detector, and an evaluation and control unit (20). In this case, a first rotary drive and a second rotary drive enable the upper part and the sighting unit to be driven and aligned, a spatial alignment of the sighting unit with respect to the base can be detected using two goniometers, and coordinates for space points can be determined using the evaluation and control unit. According to the invention, the construction surveying device (10) has a horizontal line projection functionality which, at least sometimes, takes place automatically after triggering and is intended to measure and mark space points (1a, 1b, 1c) along a horizontal line (15), running in a horizontal plane (16), on an arbitrarily shaped surface.
G01C 15/00 - Surveying instruments or accessories not provided for in groups
G01S 5/16 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using electromagnetic waves other than radio waves
70.
CONSTRUCTION LASER SYSTEM COMPRISING A ROTATION LASER AND A LASER RECEIVER, AND METHOD
The invention relates to a construction laser system comprising at least one rotation laser which has a laser unit and a rotatable deflection means and is intended to emit a rotating laser beam, wherein the rotating laser beam defines a reference surface, and a laser receiver for determining a position relative to the reference surface. In this case, the laser receiver has a laser beam detector which is designed to generate an output signal when the laser beam impinges on the laser beam detector. An evaluation unit for determining the position of the laser receiver relative to the reference surface and an indicator for the determined position, in particular for indicating whether the laser receiver exactly coincides with the reference surface, are also present. The invention is characterized by a controller for the laser unit, which controller is designed in such a manner that a known emission pattern is generated over a sequence of a plurality of revolutions by varying the emission of the laser beam in a manner temporally coupled to the revolution period of the deflection means, and by the fact that the evaluation unit is designed to identify the reference surface using a sequence of output signals which are each generated by the laser beam detector when the rotating laser beam repeatedly successively impinges, which sequence corresponds to the known emission pattern.
The invention relates to a digital camera system (2) having at least two independent digital cameras (3.1-3.4), which capture image signals in different narrow-band spectral ranges, wherein each of the at least two independent digital cameras (3.1-3.4) comprises at least one separate two-dimensional digital image sensor (6), preferably a CCD sensor or a CMOS sensor, and at least one filter element (7.1-7.4) corresponding to the particular narrow-band spectral range connected upstream of the at least one two-dimensional digital image sensor (6) and having at least one filter region (7a.1-7a.4). The at least one colour filter element (7.1-7.4) additionally comprises at least one neutral region (7b), which is translucent in a spectral range that includes at least the different narrow-band spectral ranges of the at least two independent digital cameras (3.1-3.4), in particular in a panchromatic spectral range, and which is assigned to at least one specific neutral, in particular unused, pixel region (6b) of the associated at least one two-dimensional digital image sensor (6).
The invention relates to a survey system having a position-finding unit (2, 2') for determining a target position and having a mobile target unit (1) for defining targets (20). The target unit (1) has a survey stick (11) having a high-precision localizable target (12, 12', 12'') and a hand-held remote control unit (3). The remote control unit (3) has an electronic graphical display (9) and can be mounted on a holder on the survey stick (11) such that the remote control unit (3) - in the mounted state - is in a fixed position relative to the target (12, 12', 12'') fitted to the survey stick (11). According to the invention, the remote control (3) comprises a camera (5) for taking a camera image in a defined shooting direction. In addition, an image processing and evaluation unit with a data link to the position-finding unit (2, 2') and to the camera (5) is provided which - from knowledge of the fixed relative position and of a defined shooting direction and also on the basis of the determined target position - can spatially relate image data from the camera (5) to the targets in the coordinate system.
An unambiguous heading direction is calculated to determine the forward/reverse state of a vehicle. A heading alignment error is determined at step 100, being the difference between a GNSS direction of motion and the unresolved IMU heading of the vehicle. The heading alignment error is adjusted by 180° to be within a predetermined range at step 200. The unresolved IMU heading of the vehicle 10 is adjusted using the heading alignment error to determine an ambiguous error corrected IMU heading at step 300. Step 400 determines whether the ambiguous error corrected IMU heading is substantially in the true direction of the nose of the vehicle. The unambiguous heading direction is calculated at step 500 by offsetting the ambiguous error corrected IMU heading by 180 degrees if the ambiguous error corrected IMU heading is substantially opposite the true direction of the nose of the vehicle. The forward/reverse state is determined by comparing the unambiguous heading direction with the GNSS direction of motion of the vehicle.
G01S 19/47 - Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement the supplementary measurement being an inertial measurement, e.g. tightly coupled inertial
G01C 21/00 - Navigation; Navigational instruments not provided for in groups
G01S 19/00 - Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
74.
GEODATIC SURVEYING DEVICE HAVING AUTOMATIC HIGH-PRECISION TARGET POINT SIGHTING FUNCTIONALITY
The invention relates to a geodatic surveying device which is equipped with an automatic target point sighting functionality for determining the position of a target point. The target point is indicated with high spatial precision by a known reticle. The geodatic surveying device is fitted with a sighting apparatus which can be pivoted in a motorized manner relative to a base of the surveying device in order to change the orientation of the apparatus. The sighting apparatus is at least equipped with an objective unit (3) defining an optical target axis OA and with a camera sensor (4) for capturing a camera image of the sighted reticle. The geodatic surveying device is further equipped with an angle measuring functionality for capturing the orientation of the target axis OA and with evaluation means (50) for image processing, data storage and control of the orientation of the sighting apparatus. According to the invention, a reticle pattern that corresponds to the outer shape of the known reticle is stored, wherein a main point of the reticle pattern is predefined as indicating the target point. In order to carry out an automatic target point sighting functionality, the evaluation means are designed such that, after the function start, a camera image of the reticle is automatically recorded, the reticle pattern is aligned with the reticle in the camera image by means of image processing and, depending on a position of the main point in the camera image in the matched state of the reticle pattern, the orientation of the sighting apparatus is changed in a motorized manner such that the optical target axis OA is oriented with high precision at the target point.
Target point recognition method for an automatic search of target points in a surveying environment in advance of a precise measurement of these points, wherein an angle, in particular a horizontal and a vertical angle, to the target points is measured with a surveying instrument, the surveying instrument comprising means for measuring angles, a camera and processing means for data storing and controlling the following steps in an automated manner after starting the search: • a scanning procedure with emitting electromagnetic radiation in form of a scanning beam, in particular in the form of a fan, to illuminate targets, moving the scanning beam within a predetermined angular range in order to scan the surveying environment, detecting reflections of the electromagnetic radiation on the targets, wherein the targets are defining the target points, and determining the angle to the target points, • a capturing procedure with capturing an overall image of the surveying environment, wherein the overall image comprises at least one single image taken by the camera, in particular comprising several images stitched together to a panoramic view, and determining target points and their angle on the overall image by image processing by matching targets with one or more predetermined search criteria, storing the target points together with their angle a data base, and displaying the overall image together with marks for indicating a position of the target points detected within the scanning procedure and the capturing procedure in the overall image.
The invention relates to an optical measurement method for determining 3D coordinates for a multiplicity of measurement points of a measurement object surface (1s). For this purpose, the measurement object surface (1s) is illuminated with a pattern sequence of various patterns (2a, 2b) using a projector (3), an image sequence of the measurement object surface (1s) that is illuminated with the pattern sequence is recorded with a camera system (4), and the 3D coordinates for the measurement points are determined by evaluation of the image sequence. According to the invention, while the image sequence is being recorded, at least during the illumination times of individual images of the image sequence, translational and/or rotational accelerations of the projector (3), the camera system (4) and/or the measurement object (1) are measured at least at a measurement rate such that, during the illumination times of the respectively individual images of the image sequence, in each case a plurality of values, in particular a multiplicity of values, for the accelerations are acquired. It is thus possible, on the basis of the measured accelerations, to take into account algorithmically, when determining the 3D coordinates, movements of the projector (3), the camera system (4) and/or the measurement object (1), which movements occur during the illumination times of the respective individual images of the image sequence and provoke unsteadiness and/or motion blur in the respective individual images of the image sequence.
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
77.
METHOD FOR VERIFYING A SURVEYING INSTRUMENT'S EXTERNAL ORIENTATION
The invention relates to a method for verifying a surveying instrument's external orientation during a measurement process. The method comprises the initialization steps of: • directing the imaging means of the surveying instrument onto a reference object (2) and detecting a first photographing direction of the imaging means, • taking a first image of the reference object (2) in the first photographing direction, • memorizing the first image and the first photographing direction as being indicative of the surveying instrument's external orientation. According to the invention, in a proceeded state of the measurement process, the following verifying steps are carried out, particularly in an automatic and preprogrammed way: • re-directing the imaging means onto the reference object (2) and detecting a second photographing direction of the imaging means, • taking a second image of the reference object (2) in the second photographing direction, and • comparing a first with a second imaged position of the reference object (2) in the first respectively the second image by image processing as well as the first with the second photographing direction and verifying the surveying instrument's external orientation based on disparities between the first and the second imaged position and/or between the first and the second photographing direction.
The invention concerns a surveying method for measuring an object, wherein the object belongs to a group of known types of objects, and determining an object representing point corresponding to the type of the object, by a surveying instrument (1) with means for measuring distances and angles and a camera, comprising the steps of: • determining a series of points (6e, 6f, 6g) at an object (21, 27) by measuring distances and angles to the points in a defined angle area, • analysing the spatial distribution of the points and, based thereon, assigning relevant points to a first group of points (6e), • identifying the type of the object (21) on the basis of the first group of points (6e), • capturing an image of the object (21), • extracting a contour of the object (21) from the image by use of an image processing method, • fitting at least one space curve to the object on the basis of the first group of points and the extracted contour, and • determining the coordinates of the object representing point from the fitted space curve.
The invention relates to a surveying instrument (1) comprising a telescope, at least one camera providing first, second or more image signals and a controller, wherein the controller is adapted to combine the image signal data of the first, second or more image signals in order to simultaneously display at least two of the images (7, 9) corresponding to the first, second or more image signals on display means (3).
G01C 15/00 - Surveying instruments or accessories not provided for in groups
G02B 23/00 - Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
80.
METHOD AND GUIDANCE-UNIT FOR GUIDING BATTERY-OPERATED TRANSPORTATION MEANS TO RECONDITIONING STATIONS
The invention concerns a method, unit and a computer program product for guiding a mobile transportation means (2b) of a set of transportation means (2), which transportation means (2) have each associated a powering battery of a set of batteries (4), to a selected reconditioning station (3b) of a set of reconditioning stations (3), in a geographically distributed arrangement of the transportation means (2) and the reconditioning stations (3). It comprises the steps of determining a position of the battery, determining a condition of the battery, forecasting a consumption characteristic of the transportation means (2b), evaluating an achievable range of mobility of the transportation means (2b), assigning the selected reconditioning station (3a) of the set of reconditioning stations (3), to the transportation means (2b) for charge or substitution of the powering battery, which is located within the range of mobility of the transportation means (2b) along a path to a desired target (5) and guiding the transportation means (2b) to the selected reconditioning station (3b), wherein an optimisation of the assignment and/or the path is executed by a search algorithm for assigning the set of transportation means (2) to the set of reconditioning stations (3) and batteries (4), based on actual and/or forecasted information about multiple entities of the sets of transportation means (2), stations (3) and batteries (4) as well as their conditions.
The invention generally relates to a surface sensing device comprising an optical monitoring system for measuring a displacement of the tip a hollow stylus with respect to a stylus carrier. According to the invention, the light emitting means of the optical monitoring system are built in such a way that the beam has at least two distinguishable light characteristics with a given characteristics distribution. The optical monitoring system further comprises an optically encoding component (100) positioned in the stylus carrier in the optical return path and designed to transform the information of an impinging position (50, 50') of the returned beam upon the optical encoding component (100) into a change of the characteristics distribution of the returned beam, and the detector means is sensitive for the at least two distinguishable light characteristics and built for generating the electrical output signal dependent on the changed characteristics distribution of the returned beam.
The invention relates to a coordinate measuring device comprising a carrier (6) that can be rotated automatically about two axes and that can be directed toward a measuring aid (5). The following are arranged on the carrier (6) so as to be able to move together: an optical distance measuring device (4) for measuring the distance to the measuring aid (5); a light source (23, 33) for emitting light, directly or by means of optical elements (28, 29, 41, 63), wherein said light is visible as a target point (25, 35) when reflected on the measuring aid (5); a target detecting unit (2, 3) for determining a position (22, 32) as the position of the imaging of the target point (25, 35) on a position detection sensor (21, 31). The control apparatus (7) is designed to direct the carrier (6) at the measuring aid (5) by rotating the carrier about the at least two axes (61, 62) of the carrier according to the fine position (22) and the rough position (32); and the light source (23, 33) is a superluminescent diode (SLED).
Disclosed is a measurement method for a surface-measuring measuring machine comprising a base, a measurement component for establishing and maintaining a contacting or contact-less, in particular optical, measurement connection to a surface to be measured, wherein the measurement component is connected to the base by way of at least one connecting element (10), and at least one rotary encoder, which detects the rotation of the at least one connecting element (10) with respect to a holder (11) and each of which has a code carrier (12) and a sensor arrangement (13). In said measurement method, a code projection which is dependent on the three-dimensional position of the code carrier (12) relative to the sensor arrangement (13) is generated on the sensor arrangement (13), and at least part of the code projection is captured. From this, an angular position of the code carrier (12) with reference to the defined axis of rotation (DA) is ascertained and the current measurement position of the measurement component relative to the base is determined, wherein, for the at least one rotary encoder, a position value for at least one further degree of freedom of the code carrier (12) relative to the sensor arrangement (13) is ascertained on the basis of the code projection and is taken into account to determine the current measurement position, and a relative position of the connecting element (10) with respect to the holder (11) and/or the deformation thereof is determined from the position value in the form of a change in shape or size.
G01B 21/04 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
G01D 5/347 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
84.
ELECTROMAGNETIC PROXIMITY DETECTION METHOD AND UNIT
An electromagnetic proximity detection method for a buried structure (5/10), executed with a mobile detection device (1), by the steps of sensing an electromagnetic field (7/12) emitted from the structure (5/10) as an analog electrical signal and digitalizing the analog electrical signal as a digital signal, is presented. The proximity of the buried structure by analysing the digital signal is executed, wherein the detection method can be alternatively executed in at least two of the following, selectable, modes of detection: • Power-Mode of detection, • Radio-Mode of detection or • Active-Mode of detection. The method is characterized by an additional Switching -Mode of operation wherein a repeated sequential detection in at least two of the mentioned modes of detection is done by automatic subsequent alternating of the mode of detection with such a minimum rate of alternation that an area of detection (2) is coverable by the at least two modes of detection in a single execution of the detection method.
G01V 3/15 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat
Agricultural vehicles are guided to prevent overlap of areas operated on by the vehicles. Guidance data is shared between agricultural vehicles by coverage data of area covered by a first agricultural vehicle being wirelessly transmitted to a central server. Download guidance data is generated at the central server using the coverage data received at the central server. The download guidance data is wirelessly transmitted from the server to a second guidance device of a second agricultural vehicle. The second agricultural vehicle uses the download guidance data to not overlap with area covered by the first agricultural vehicle while operating.
Highly accurate electro-optical time of flight distance measuring device for determining a distance to a target. It is comprising at least a transmitter for sending out a pulse shaped optical radiation to the target, in particular as a pulse modulated laser beam from a laser diode, as well as a receiver for an optical signal, which signal is comprising parts of the optical radiation scattered back from the target, built for turning the optical signal to an electrical signal, in particular as a photodiode or avalanche photodiode, and a filter with a transfer-function for filtering the electrical signal, in particular an analog lowpass or bandpass filter whereby the filter is built in such a way that its transfer-function is of at least 4th order, in particular 5th or 7th or higher order, so that aliasing is suppressed. Further a waveform-sampler, as an analog-to-digital- converter, for digitalizing the pulse shape from the filtered electrical signal as time- and value-quantized digital data, and a computation means for a numerical evaluation of the distance according to the pulse shape or a pulse shape representing numerical signature from the digital data, in particular with a resolution in time being orders of magnitude better than the time-quantisation interval of the waveform sampler is comprised.
G01S 17/10 - Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
G01S 17/36 - Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal
87.
METHOD FOR SPECKLE MITIGATION IN AN INTERFEROMETRIC DISTANCE METER AND CORRESPONDING DISTANCE METER
A method for speckle mitigation in an interferometric distance meter comprises the steps of transmitting optical radiation (12) with at least one wavelength λ to a target (11) to be surveyed, receiving a portion of the optical radiation (12) scattered back by the target (11) in an optical axis (OA), wherein the optical radiation (12) forms a speckle field, converting the received optical radiation (12) into at least one received signal, determining a true distance to the target (11) from the received signal by absolute or incremental interferometric distance measurements. In the method the true pointing direction relative to the optical axis (OA) is determined, wherein the distance error due to speckle effects is corrected.
G01B 11/02 - Measuring arrangements characterised by the use of optical techniques for measuring length, width, or thickness
G01S 17/32 - Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
88.
CALIBRATION METHOD AND ANGLE MEASURING METHOD FOR AN ANGLE MEASURING DEVICE, AND ANGLE MEASURING DEVICE
The invention relates to a calibration method that can be carried out without a reference system for an angle measuring device having a code carrier (2) carrying an absolute position code, and at least two reading heads (1a and 1b) comprising a fixed, known angle position (4) at an angular distance, in particular of more than (50) degrees, relative to each other, in particular wherein at least one of the angle distances between adjacent reading heads (1a,1b,1c,1d) differs from the other angle distances, and each detecting the position code at least partially, such that an absolute angle position value of each reading head can be determined relative to the code carrier, wherein the code carrier can be rotated (3) relative to the reading heads, and different angle positions of the code carrier relative to the reading heads can thus be captured, comprising the steps of: determining the angle position values of the reading heads (1a and 1b) in an angular setting; determining an angular error by comparing the difference of the angle position values of the reading heads to the known angular location (4) of the reading heads (1a and 1b) relative to each other; repeating the determining of the angle position values and the angular error for a plurality of varying angle settings, and performing a mathematical analysis method, comprising determining the parameters of a mathematical function quantifying the angular error, and determining calibration parameters as parameters of the quantifying mathematical function or as a correction or code table derived from the parameters.
G01D 5/244 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains
89.
SIGHTING DEVICE, IN PARTICULAR TELESCOPIC SIGHT, FOR A GEODETIC MEASURING APPARATUS AND OPTICAL OBJECTIVE UNIT ASSEMBLY FOR SUCH A SIGHTING DEVICE
The invention relates to a sighting device, in particular to a telescopic sight, for a measuring apparatus having angular and in particular distance measurement functionality. The sighting device at least comprises an objective unit - defining an optical axis - having at least one lens, an image unit having a camera sensor and/or an eyepiece for capturing and/or providing an image of a sighted target object, a transmitter for emitting measurement beams as transmitted beams and/or a receiver for capturing measurement beams as received beams, and at least one optical deflection means for coupling the transmitted beams into the optical beam path of the sighting device and/or for coupling the received beams (4) out of the optical beam path. According to the invention, the at least one lens comprises a cylindrical recess around the optical axis, the recess extending in the direction of the optical axis. Furthermore, the deflection means comprises a cylindrical fastening section that extends inside the recess such, and corresponds to the recess with respect to shape and dimension such, that a gluing gap is created between the outer lateral surface of the fastening section and at least a portion of an inner lateral surface of the lens defined by the recess, and the deflection means is fastened to the at least one lens, mediated by an adhesive located in the gluing gap.
A method of calibrating inertial sensors of working equipment, such as a vehicle or survey equipment, includes determining whether the working equipment is in operation or not. Data is captured from inertial sensors and associated temperature sensors while the working equipment is out of operation. The captured data is used to update a thermal bias error model for the inertial sensors.
The invention concerns a proximity detection of buried conductive structures before or while digging in areas being excavated. By means of the enclosed methods, devices, and setups, the ability and accuracy of the detection of underground structures, such as conduits, pipes, etc. is improved by conductively applying a current into the structure through the soil. The thereby emitted electromagnetic field is detected by a movable detection- unit over ground. According to this electromagnetic field the detection-unit can determine the proximity of the structure and issue a warning signal. This warning signal helps an operator of an earth moving machine to avoid a collision with the structure.
G01V 3/06 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation operating with propagation of electric current using ac
According to the invention, the calibration measuring cycle (MZ) is divided into several, particularly a plurality of partial cycles (TZ1, TZ2, TZ3, TZ4, TZ5, TZ6, TZi), with which one or more of the calibration measurements (KM) are associated. While maintaining the cycle (Ta), the partial cycles (TZ1, TZ2, TZ3, TZ4, TZ5, TZ6, TZi) are now carried out in one of the positioning pauses (Pa) such that the calibration measuring cycle (MZ) is distributed over several, in particular a plurality of, positioning pauses (Pa) and is integrated into the flow of the industrial process (IP) without interfering with the same.
The present invention relates to a coordinate measuring machine (1) for determination of at least one spatial coordinate of a measurement point (13) on an object (12) to be measured. The coordinate measuring machine (1) comprises a stationary base (3), a probe head (6) for approaching the measurement point (13) and a frame structure (15) for linking the probe head (6) to the base (3). Thereby, the frame structure (15) comprises at least a first and a second frame component (14, 22, 24) and at least one linear drive mechanism (2) moveably linking the first and the second frame components (14, 22, 24), for provision of movability of the probe head (6) relative to the base (3) in a first direction (X, Y, Z). According to the invention, at least a first mechanical reference element (72) extending along a first part of the frame structure (15) is fastened fixedly to the frame structure (15) in a substantially unloaded way, and at least one displacement sensor (9, 9a, 9b) is assigned to the first reference element (72), wherein the first reference element (72) and the displacement sensor (9, 9a, 9b) are designed and arranged in such a way, that a distance from the first reference element (72) to the frame structure (15) in the region of the first part is measurable, the distance indicating a displacement and/or deformation of the frame structure (15) in the region of the first part.
G01B 21/04 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
94.
COORDINATE MEASURING MACHINE (CMM) AND METHOD OF COMPENSATING ERRORS IN A CMM
The present invention relates to a coordinate measuring machine (1) for determination of at least one spatial coordinate of a measurement point (13) on an object (12) to be measured. The coordinate measuring machine (1) comprises a stationary base (3), a probe head (6) for approaching the measurement point (13) and a frame structure (15) for linking the probe head (6) to the base (3). Thereby, the frame structure (15) comprises at least a first and a second frame component (14, 22, 24) and at least one linear drive mechanism (2) moveably linking the first and the second frame components (14, 22, 24), for provision of movability of the probe head (6) relative to the base (3) in a first direction (X, Y, Z). According to the invention, a first reference path is provided by an optical reference beam (71), wherein the reference beam (71) extends along a guide of the linear drive mechanism so that the reference path is parallel to the first direction (X, Y, Z). Furthermore, at least one displacement sensor (9, 9a, 9b) is assigned to the reference beam (71), the reference beam (71) and the displacement sensor (9, 9a, 9b) being designed and arranged in such a way, that a displacement of the movable member of the linear drive mechanism relative to the first reference path is measurable being indicative of a translational and/or rotational displacement of the movable member from its ordinary bearing position.
G01B 21/04 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
95.
APPARATUS FOR GENERATING THREE-DIMENSIONAL IMAGE OF OBJECT
The present invention relates to a non-contact laser triangulation scanning apparatus for generating a three-dimensional image of the surface of an object based on the 3D surface position and surface contrast information. The apparatus comprises a laser source, a first optical unit, a second optical unit, a photosensitive positional detector having a plurality of sensor elements, and an incident light measurement device. According to generated timing signals having a predetermined time interval, a reset timing of the sensor elements of the photosensitive positional detector is controlled. The incident light measurement device measures an amount of a certifying laser light after one timing signal. An amount of a measurement laser light is determined dependent on the measured amount of the certifying laser light. The three-dimensional image is generated by combining position data derived from signals of the positional detector with contrast data derived at least from signals of the incident light measurement device (considering the measured amount of the certifying laser light).
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
96.
TRACKING METHOD AND MEASURING SYSTEM HAVING A LASER TRACKER
A target (9) equipped with a reflector (17) can be tracked in a measuring system comprising a laser tracker (10). The reflector (17) is tracked by means of a tracking unit (11) in a normal tracking mode and by means of a surveying device (13) in an extraordinary tracking mode. A capturing unit (12) having a detection range lying between the detection ranges of the tracking unit (11) and of the surveying device (13) is also present. If the target (9) cannot be detected by the tracking unit (11) but can be detected by the capturing unit (12), the orientation of the tracking unit (11) is controlled according to a measurement by the capturing unit (12). If the target (9) can then be detected by the tracking unit (11), a transition to the normal tracking mode is initiated. If the target (9) can be detected only by the surveying device (13), the orientation of the tracking unit (11) is controlled according to a measurement of the surveying device (13).
The invention relates to a coordinate measuring device comprising a carrier (6) that can be rotated automatically about two axes and that can be directed toward a measuring aid (5). The following are arranged on the carrier (6) so as to be able to move together: ⋅ an optical distance measuring device (4) for measuring the distance to the measuring aid (5); ⋅ an infrared light source (23) for emitting an infrared target beam (24), which is visible as an infrared target point (25) when reflected on the measuring aid (5); ⋅ a fine target detection unit (2) for determining a fine position of the infrared target point (25) on a first position detection sensor (21), wherein the fine target detection unit (2) and the distance measuring device (4) have a common exit lens system (63); ⋅ a second light source (33), the light of which is visible as a second target point (35) when reflected on the measuring aid (5); ⋅ a rough target detection unit (3) for determining a rough position (32) of the second target point (35) on a second position detection sensor (31), wherein the rough target detection unit (3) is sensitive only to light in the infrared range. A control device (7) is provided to direct the carrier (6) toward the measuring aid (5) according to the fine position (22) and the rough position (32).
The invention relates to a method and a system for highly precisely positioning at least one object in an end position in space. An object (12) is grabbed and held by the industrial robot (11) within a gripping tolerance. A compensation value that corrects the gripping tolerance is determined for the industrial robot (11). The object (12) is highly precisely moved to an end position by the following steps, which are repeated until the end position is reached within a specified tolerance: Recording a three-dimensional image by means of a 3-D image recording device (1). Determining the present position of the object (12) in the spatial coordinate system from the position (P) of the 3-D image recording device (1) the angular orientation of the 3-D image recording device (1) detected by an angle measuring unit (4), the three-dimensional image, and the knowledge of features (13) on the object (12). Calculating the position difference between the present position of the object (12) and the end position. Calculating a new target position of the industrial robot (11) while taking into consideration the compensation value from the present position of the industrial robot (11) and a value linked to the position difference. Moving the industrial robot (11) to the new target position.
G05B 19/402 - Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for positioning, e.g. centring a tool relative to a hole in the workpiece, additional detection means to correct position
99.
AERIAL CAMERA SYSTEM AND METHOD FOR CORRECTING DISTORTIONS IN AN AERIAL PHOTOGRAPH
The invention relates to a method for correcting a distortion in an aerial photograph (1) caused by a flight movement in the forward direction, the photograph being taken with an aerial camera (2) from a flying object (3). The aerial photograph (1) is captured by a surface sensor (4) of the aerial camera (2) having a plurality of photo-sensitive pixels (5), the sensor lines (6) of which sensor, in particular rows, are exposed at different, successive exposure times by means of a slit diaphragm shutter (7) which moves over a projected image, so that each individual sensor line (6) senses a strip of terrain (9) of the terrain (8) flow over at the different exposure times. According to the invention, a relative flight altitude, which is current in particular at the exposure time, above the strips of terrain (9) captured by the respective sensor line is assigned to the individual sensor lines (6). Furthermore, a compensation factor is separately determined for each of the individual sensor lines (6), wherein the factor depends on an air speed of the flying object (3), a focal length of the aerial camera (2) and the relative flight altitude assigned to the respective sensor line, and corrects the distortion in the aerial photograph (1) for the lines based on the respective compensation factor.
The invention relates to a piezo drive, in particular for use in geodesic devices, having at least one piezoelectric motor element (2) that includes an advancing component, a running surface component (10C), and a receptacle for the running surface component (10C), wherein said receptacle is to be connected to a component to be driven, wherein the piezoelectric motor element (2) has a window of operation of the motor as a frequency range of the movement of the advancing component. The running surface component (10C) and the receptacle (9C) are sized and connected to one another such that the natural resonances of the running surface component (10C) lie outside the window of operation of the motor.
patents
