According to different embodiments, a LIDAR system (100) can have: a detector (104) having a plurality of detector pixels (106) which are arranged along a first direction, each detector pixel (106) of the plurality of detector pixels (106) being assigned to a respective sub-section of the field of view (102); a light source (110) having a plurality of sub-light sources (112) which are arranged along a second direction at an angle to the first direction, each sub-light source (112) of the plurality of sub-light sources (112) being assigned to a respective sub-section of the field of view (102); a coarse angle control element (114) which is designed to deflect light from the light source (110) to the field of view and deflect light from the field of view (102) to the detector (104); and a light emission control (118) which is designed to control the sub-light sources (112) of the plurality of sub-light sources (112) such that each sub-light source (112) of the plurality of sub-light sources (112) emits light in a respective emission time period.
According to various embodiments, an optical assembly (200) for a LIDAR system can comprise: a focusing assembly (202), which is designed such that it focuses light onto a focal point (214) of the focusing assembly (202); a beam-deflection component (204), which is arranged downstream of the focusing assembly (202) at a first spacing (216) from the focal point (214) of the focusing assembly (202), wherein the beam-deflection component (204) is configured such that it deflects the light at a deflection angle onto a visual field (220); and a parallelisation lens (206), which is arranged downstream of the beam-deflection component (204) at a second distance (218) from the focal point (214) of the focusing assembly (202), wherein the second distance (218) corresponds to a focal length of the parallelisation lens (206), and wherein the parallelisation lens (206) is configured such that it parallelises the light from the focal point (214).
G01S 7/481 - Caractéristiques de structure, p.ex. agencements d'éléments optiques
G02B 26/08 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables pour commander la direction de la lumière
3.
SYSTEMS AND METHODS FOR WIDE-ANGLE LIDAR USING NON-UNIFORM MAGNIFICATION OPTICS
Methods and systems for wide-angle LiDAR are provided that utilize magnification optics that provide non-uniform resolution in different areas of a Field of View (FoV).
Methods and systems for wide-angle LiDAR are provided that utilize magnification optics that provide non-uniform resolution in different areas of a Field of View (FoV).
5.
BEAM-STEERING DEVICE PARTICULARLY FOR LIDAR SYSTEMS
A beam-steering engine, comprising an optical element switchable between a first operational mode and a second operational mode, in the first operational mode of the optical element the beam-steering engine is configured to output an input light beam incident on the beam-steering engine along a first propagation direction and in the second operational mode of the optical element the beam-steering engine is configured to output the input light beam incident on the beam-steering engine along a second propagation direction. A transition of the optical element between the first and second operational modes is characterized by a transition time period that varies with a temperature of the optical element. The beam-steering engine further includes a device to control a temperature of the solid-state optical element to maintain the transition time period below a certain limit.
G02F 1/29 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de la position ou de la direction des rayons lumineux, c. à d. déflexion
G01S 7/481 - Caractéristiques de structure, p.ex. agencements d'éléments optiques
G01S 17/89 - Systèmes lidar, spécialement adaptés pour des applications spécifiques pour la cartographie ou l'imagerie
G02B 27/28 - Systèmes ou appareils optiques non prévus dans aucun des groupes , pour polariser
6.
BEAM-STEERING DEVICE PARTICULARLY FOR LIDAR SYSTEMS
A beam-steering engine, comprising an optical element switchable between a first operational mode and a second operational mode, in the first operational mode of the optical element the beam-steering engine is configured to output an input light beam incident on the beam-steering engine along a first propagation direction and in the second operational mode of the optical element the beam-steering engine is configured to output the input light beam incident on the beam-steering engine along a second propagation direction. A transition of the optical element between the first and second operational modes is characterized by a transition time period that varies with a temperature of the optical element. The beam-steering engine further includes a device to control a temperature of the solid-state optical element to maintain the transition time period below a certain limit.
7.
BEAM-STEERING DEVICES AND METHODS FOR LIDAR APPLICATIONS
A LIDAR apparatus for scanning a scene is provided that includes a transmitter stage, a receiver stage, a beam-steering engine configured to steer the light beam received from the transmitter stage in different directions to scan at least a portion of the scene. The beam-steering engine is responsive to steering commands to produce corresponding deflections of the light beam.
8.
BEAM-STEERING DEVICE PARTICULARLY FOR LIDAR SYSTEMS
A LIDAR apparatus for scanning a scene, comprising a transmitter stage, a receiver stage, a beam- steering engine configured to steer the light beam received from the transmitter stage in different directions to scan at least a portion of the scene, the beam- steering engine being responsive to steering commands to produce corresponding deflections of the light beam and an operation monitor for monitoring a beam-steering function of the beam-steering engine.
A LIDAR apparatus for scanning a scene is provided that includes a transmitter stage, a receiver stage, a beam-steering engine configured to steer the light beam received from the transmitter stage in different directions to scan at least a portion of the scene. The beam-steering engine is responsive to steering commands to produce corresponding deflections of the light beam.
G01S 17/08 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement
G01S 7/4861 - Circuits pour la détection, d'échantillonnage, d'intégration ou de lecture des circuits
G01S 7/48 - DÉTERMINATION DE LA DIRECTION PAR RADIO; RADIO-NAVIGATION; DÉTERMINATION DE LA DISTANCE OU DE LA VITESSE EN UTILISANT DES ONDES RADIO; LOCALISATION OU DÉTECTION DE LA PRÉSENCE EN UTILISANT LA RÉFLEXION OU LA RERADIATION D'ONDES RADIO; DISPOSITIONS ANALOGUES UTILISANT D'AUTRES ONDES - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe
G01S 7/481 - Caractéristiques de structure, p.ex. agencements d'éléments optiques
G01S 17/10 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement utilisant la transmission d'ondes à modulation d'impulsion interrompues
G01S 17/89 - Systèmes lidar, spécialement adaptés pour des applications spécifiques pour la cartographie ou l'imagerie
G02F 1/1335 - Association structurelle de cellules avec des dispositifs optiques, p.ex. des polariseurs ou des réflecteurs
10.
BEAM-STEERING DEVICE PARTICULARLY FOR LIDAR SYSTEMS
A LIDAR apparatus for scanning a scene, comprising a transmitter stage, a receiver stage, a beam- steering engine configured to steer the light beam received from the transmitter stage in different directions to scan at least a portion of the scene, the beam- steering engine being responsive to steering commands to produce corresponding deflections of the light beam and an operation monitor for monitoring a beam-steering function of the beam-steering engine.
11.
LIDAR SYSTEM, APPARTUS COMMUNICATING WITH THE LIDAR SYSTEM, AND APPARATUS LOCATED IN A FIELD OF VIEW (FOV) OF THE LIDAR SYSTEM
The present disclosure provides a light detection and ranging (LIDAR) system, which comprises: a distance measuring unit configured to emit a plurality of first pulses towards an object located in a field of view (FOV), wherein the object is associated with one or more markers; and a detector configured to receive at least one second pulse from the one or more markers of the object, wherein each of the at least one second pulse indicates object information identifying the object. There is also provided an apparatus configured to communicate with a LIDAR system that is associated with an object in a traffic environment, as well as an apparatus disposed on an object located in a FOV of a LIDAR system.
G01S 7/481 - Caractéristiques de structure, p.ex. agencements d'éléments optiques
G01S 7/4863 - Réseaux des détecteurs, p.ex. portes de transfert de charge
G01S 7/4914 - Réseaux des détecteurs, p.ex. portes de transfert de charge
G01S 17/86 - Combinaisons de systèmes lidar avec des systèmes autres que lidar, radar ou sonar, p.ex. avec des goniomètres
G01S 17/894 - Imagerie 3D avec mesure simultanée du temps de vol sur une matrice 2D de pixels récepteurs, p.ex. caméras à temps de vol ou lidar flash
G01S 17/10 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement utilisant la transmission d'ondes à modulation d'impulsion interrompues
G01S 17/36 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement utilisant la transmission d'ondes continues, soit modulées en amplitude, en fréquence ou en phase, soit non modulées avec comparaison en phase entre le signal reçu et le signal transmis au même moment
There is provided a method for optically scanning a region according to a plurality of scanning directions, comprising: receiving an interleave sequence defining a scanning order for the plurality of scanning directions; sequentially propagating optical pulses according to the interleave sequence; detecting pulse echoes corresponding to a reflection of the propagated optical pulses on at least one object present within the region; and outputting the detected pulse echoes. There is further described a computer- implemented method for correcting a temporal slippage of an optical echo.
G01S 7/483 - DÉTERMINATION DE LA DIRECTION PAR RADIO; RADIO-NAVIGATION; DÉTERMINATION DE LA DISTANCE OU DE LA VITESSE EN UTILISANT DES ONDES RADIO; LOCALISATION OU DÉTECTION DE LA PRÉSENCE EN UTILISANT LA RÉFLEXION OU LA RERADIATION D'ONDES RADIO; DISPOSITIONS ANALOGUES UTILISANT D'AUTRES ONDES - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe - Détails de systèmes à impulsions
G01S 7/487 - Extraction des signaux d'écho désirés
13.
INTRINSIC STATIC NOISE CHARACTERIZATION AND REMOVAL
A computer-implemented method and a system for at least partially removing intrinsic static noise from data obtained by an optical time-of-flight sensor using full-waveform analysis. The method includes receiving a plurality of calibration traces, the calibration traces being obtained in a controlled environment wherein no object is present in a field of view of the optical time-of-flight sensor; determining a noise template using the calibration traces by performing a statistical analysis on the calibration traces to determine a shape and an amplitude of the intrinsic static noise in the calibration traces; receiving a normal operation trace, the normal operation trace being obtained in an uncontrolled environment wherein a presence of the object in the field of view is unknown; subtracting the noise template from the normal operation trace, obtaining and outputting a denoised signal.
Computer-implemented methods and systems for at least partially removing extrinsic static noise from data obtained by an optical time-of-flight sensor using full-waveform analysis. The method comprises finding a mathematical representation of the electromagnetic crosstalk present in victim calibration traces and caused by aggressor photosensitive element using aggressor calibration traces and victim calibration traces, determining a predetermined threshold for the amplitude of the aggressor calibration trace at which the electromagnetic crosstalk is present in the victim calibration traces, predicting the extrinsic static noise generated by the aggressor signal on the synchronized victim operation trace using the mathematical representation to generate a predicted crosstalk signal, removing the predicted crosstalk signal from the synchronized victim operation trace to output a denoised signal. The system comprises an identification and parameter estimation unit, a peak detection unit and a crosstalk prediction unit. An optional saturated summit completion unit can be provided.
A method and system for the detection of an object in a detection zone for a scannerless optical rangefinder operating in pulsed Time-Of-Flight operation are described. The method comprises pulsating a light source to illuminate the detection zone using an emission beam; receiving a reflection from the detection zone, collecting the reflection using an optical detector and generating a reflection signal; discretizing the detection zone to create a predetermined detection pattern in the detection zone, the predetermined detection pattern being one of regular, uniform and random, the predetermined detection pattern including passive areas and discrete active detection areas within the detection zone; detecting an object in one of the discrete active detection areas by comparing a change in the reflection signal with a background signal.
G01S 17/04 - Systèmes de détermination de la présence d'une cible
G01S 17/10 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement utilisant la transmission d'ondes à modulation d'impulsion interrompues
16.
SYSTEM AND METHOD FOR MULTIPURPOSE TRAFFIC DETECTION AND CHARACTERIZATION
A method for tracking and characterizing a plurality of vehicles simultaneously in a traffic control environment, comprising: providing a 3D optical emitter; providing a 3D optical receiver with a wide and deep field of view; driving the 3D optical emitter into emitting short light pulses; receiving a reflection/backscatter of the emitted light, thereby acquiring an individual digital full-waveform MAR trace for each detection channel of the 3D optical receiver; using the individual digital full-waveform LIDAR trace and the emitted light waveform, detecting a presence of a plurality of vehicles, a position of at least part of each vehicle and a time at which the position is detected; assigning a unique identifier to each vehicle; repeating the steps of driving, receiving, acquiring and detecting, at a predetermined frequency; tracking and recording an updated position of each vehicle and an updated time at which the updated position is detected.
A method for tracking and characterizing a plurality of vehicles simultaneously in a traffic control environment, comprising: providing a 3D optical emitter; providing a 3D optical receiver with a wide and deep field of view; driving the 3D optical emitter into emitting short light pulses; receiving a reflection/backscatter of the emitted light, thereby acquiring an individual digital full-waveform LIDAR trace for each detection channel of the 3D optical receiver; using the individual digital full-waveform LIDAR trace and the emitted light waveform, detecting a presence of a plurality of vehicles, a position of at least part of each vehicle and a time at which the position is detected; assigning a unique identifier to each vehicle; repeating the steps of driving, receiving, acquiring and detecting, at a predetermined frequency; tracking and recording an updated position of each vehicle and an updated time at which the updated position is detected.
A method for tracking and characterizing a plurality of vehicles simultaneously in a traffic control environment, comprising: providing a 3D optical emitter; providing a 3D optical receiver with a wide and deep field of view; driving the 3D optical emitter into emitting short light pulses; receiving a reflection/backscatter of the emitted light, thereby acquiring an individual digital full-waveform L1DAR trace for each detection channel of the 3D optical receiver; using the individual digital full-waveform LIDAR trace and the emitted light waveform, detecting a presence of a plurality of vehicles, a position of at least part of each vehicle and a time at which the position is detected; assigning a unique identifier to each vehicle; repeating the steps of driving, receiving, acquiring and detecting, at a predetermined frequency, tracking and recording an updated position of each vehicle and an updated time at which the updated position is detected.
A method for tracking and characterizing a plurality of vehicles simultaneously in a traffic control environment, comprising: providing a 3D optical emitter; providing a 3D optical receiver with a wide and deep field of view; driving the 3D optical emitter into emitting short light pulses; receiving a reflection/backscatter of the emitted light, thereby acquiring an individual digital full-waveform LIDAR trace for each detection channel of the 3D optical receiver; using the individual digital full-waveform LIDAR trace and the emitted light waveform, detecting a presence of a plurality of vehicles, a position of at least part of each vehicle and a time at which the position is detected; assigning a unique identifier to each vehicle; repeating the steps of driving, receiving, acquiring and detecting, at a predetermined frequency; tracking and recording an updated position of each vehicle and an updated time at which the updated position is detected.
A method for detecting a vehicle comprising: providing a multi-channel scannerless full-waveform lidar system operating in pulsed Time-Of-Flight operation oriented towards a surface of the roadway to cover the detection zone; providing at least one initialization parameter; emitting pulses at an emission frequency; receiving reflections of the pulses from the detection zone; and acquiring and digitalizing a series of individual complete traces at each channel of system; identifying at least one detection in at least one of the traces; obtaining a height and an intensity for the detection; determining a nature of the detection to be one of an environmental particle detection, a candidate object detection and a roadway surface detection; if the nature of the detection is the candidate object detection, detecting a presence of a vehicle in the detection zone.
G08G 1/04 - Détection du mouvement du trafic pour le comptage ou la commande utilisant des détecteurs optiques ou ultrasonores
G08G 1/048 - Détection du mouvement du trafic pour le comptage ou la commande avec des dispositions pour compenser les conditions ambiantes ou d'autres paramètres, p.ex. la neige, un véhicule arrêté à un détecteur
A multiple-field-of-view scannerless optical rangefinder operating in pulsed Time-Of-Flight operation for use in high ambient background light is described. The rangefinder comprises an optical emitter having a LED light source and driver electronics, emitting a train of light pulses having a broad field-of-illumination (FOI); a multi-channel optical receiver (MCOR) for detecting optical return signals, an overall field-of-view (FOV) encompassing each channel instantaneous FOV, the FOI encompassing the overall FOV, the multi-channel optical receiver having analog front-end electronics; an Analog-to-Digital Converter (ADC) for receiving and converting the waveforms into digital format; a control and processing unit (CPU) for generating a pulse trigger signal, sending a synchronization trigger signal to the MCOR for starting the detection of the optical return signals, and for processing the waveforms in digital format; a data interface; wherein a peak present in any of waveforms is a signature of an object detected within the instantaneous FOV.
G01S 17/10 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement utilisant la transmission d'ondes à modulation d'impulsion interrompues
G01S 7/4863 - Réseaux des détecteurs, p.ex. portes de transfert de charge
22.
3D OPTICAL DETECTION SYSTEM AND METHOD FOR A MOBILE STORAGE SYSTEM
A mobile storage having a mobile storage unit extending along a longitudinal axis, having a detection side; an opposing component extending substantially parallel to the longitudinal axis, having an aisle side facing the detection side of the mobile storage unit; the mobile storage unit being movable between a closed position wherein the detection side of the mobile storage unit and the aisle side of the opposing component are juxtaposed and an open position wherein the mobile storage unit and the opposing component are spaced-apart and a longitudinally extending aisle is defined therebetween; the mobile storage having at least one detection module having an optical pulse emitter and an optical detector both provided at an end of one of the detection side of the mobile storage unit and the aisle side of the opposing component, facing the aisle, the optical pulse emitter emitting a light pulse in a field-of-illumination, the optical detector detecting a reflection of the light pulse in a field-of-view, the field-of-illumination and the field-of- view being adapted to at least partly overlap and to cover at least a portion of a width of the aisle. An object detection method for a mobile storage comprising receiving a temporal reflection signal from an optical detector; storing the temporal reflection signal; retrieving a background temporal reflection signal; comparing the temporal reflection signal to the background temporal reflection signal to detect the presence of an object in the temporal reflection signal; indicating a status of the aisle to be presence of an object if the object is detected to be present.
A47B 96/00 - TABLES; BUREAUX; MOBILIER DE BUREAU; MEUBLES À TIROIRS; TIROIRS; PARTIES CONSTITUTIVES GÉNÉRALES DES MEUBLES - Parties constitutives des meubles à tiroirs, étagères ou rayons non couvertes par un seul des groupes ; Eléments généraux de meubles
A47B 53/00 - Meubles à tiroirs ou étagères à plusieurs sections placées l'une derrière l'autre; Ensembles de meubles à tiroirs ou étagères
B65G 1/10 - Dispositifs d'emmagasinage mécaniques avec supports relativement mobiles pour faciliter l'insertion ou l'enlèvement des objets
There is provided a system and a method for detecting the presence of an object in a detection zone using a traffic detection system. The traffic detection system includes an optical unit having an emitter module emitting pulses within a predetermined field of emission; a receiver module receiving a part of the pulses reflected by an object in the field of emission toward a field of view of the receiver module, the field of view including a plurality of adjacent detection channels, the receiver module acquiring and converting the received pulses into a corresponding plurality of a digital signal waveforms; an image sensing module providing an image that encompasses the field of emission of the emitter module and the field of view of the receiver module. The method comprises providing a status overlay image for the field of view including the image and a visual indication on the image of an outline of the plurality of adjacent detection channels; positioning the field of view of the receiver module to cover the detection zone using the status overlay image; obtaining the plurality of digital signal waveforms using the traffic detection system; detecting a signal echo in one of the digital signal waveforms at a position within the field of view, the signal echo being caused by the presence of the object in the field of view; determining a location in the field of view for the object using the position; storing the location for the object.
A method and apparatus for non-contact optical measurement of the level of a fluid stored in a tank or container, the surface of the fluid being possibly agitated. The method consists in processing numerically the digitized signal waveforms generated by a lidar apparatus based on a pulsed time-of-flight modulation scheme. A key step of the numerical processing is the computation of a waveform in which each data point is obtained from a statistical estimator of the variability of the amplitude signal echo measured at the distance from the lidar apparatus that corresponds to the rank of the data point in the waveform. The statistical estimator is preferably the standard deviation. By using a statistical estimator of the variability of the captured signal amplitude, the specific signal echo returned from an agitated fluid surface can be greatly amplified as compared to the signal echoes returned from any obstacle or medium that could be present along the path of the optical beam radiated by the lidar apparatus. The method then allows for an efficient retrieval of the useful signal echo from which the level of the fluid surface can be reliably measured with greater accuracy, particularly in situations where the useful signal echo would be buried in a strong signal echo returned from any optically scattering or absorbing medium that would fill in the volume of the tank above the fluid surface.
G01S 7/487 - Extraction des signaux d'écho désirés
G01S 17/10 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement utilisant la transmission d'ondes à modulation d'impulsion interrompues
A method and system for determining a level of a substance in a container, the method comprises emitting one pulse from a light source in a field of illumination toward a surface of said substance in said container. A backscatter signal of said pulse is detected by an optical detector. A lidar trace is created from said backscatter signal, said lidar trace including at least one reflection peak; A surface reflection is identified among said at least one reflection peak in said lidar trace, said surface reflection being a reflection of said pulse from said surface. The surface reflection is signal-fitted to provide a fitted surface trace. A level of said substance is determined in said container using said fitted surface trace.
A rangefinding device and a method for determining the range of an object from a rangefmding device are provided. A train of light pulses each having an emission time and a pulse duration is generated. The pulse duration is set to twice the round-trip time to a maximum range of the device. The light pulses are reflected back toward the device by the object and detected according to three time intervals, respectively determined by a background gate, a ranging gate and a pulse energy gate. The light energy received during each interval is integrated and the integrated light value corresponding to the ranging gate is normalized using the values from the other two intervals. The range of the object is determined from the normalized ranging measurement and calibration data.
G01S 17/18 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement utilisant la transmission d'ondes à modulation d'impulsion interrompues dans lesquels des fenêtres en distance sont utilisées
There is provided a system and a method for acquiring a detected light optical signal and generating an accumulated digital trace The method comprises providing a light source for illumination of a field of view, an optical detector, an analog-to-digital converter (ADC), emitting one pulse from the light source in the field of view, detecting a reflection signal of the pulse by the optical detector, acquiring j points for the detected reflection signal by the ADC, storing, in a buffer, the digital signal waveform of j points, introducing a phase shift of 2pi / P, repeating, P times, the steps of emitting, detecting, acquiring, storing and introducing, to store, in the buffer, an interleaved waveform of P x j points, accumulating M traces of interleaved P x j points for a total of N = M x P acquisition sets, N being a total number of pulses emitted, creating one combined trace of the reflected signal of j x P points by adding each point of the M traces Additionally, the combined trace can be compared to a detected reference reflection signal of the pulse to determine a distance traveled by the pulse
There is provided a system and a method for acquiring a detected light optical signal and generating an accumulated digital trace The method comprises providing a light source for illumination of a field of view, an optical detector, an analog-to- digital converter (ADC), emitting one pulse from the light source in the field of view, detecting a reflection signal of the pulse by the optical detector, acquiring j points for the detected reflection signal by the ADC, storing, in a buffer, the digital signal waveform of j points, introducing a phase shift of 2pi / P, repeating, P times, the steps of emitting, detecting, acquiring, storing and introducing, to store, in the buffer, an interleaved waveform of P × j points, accumulating M traces of interleaved P × j points for a total of N=M × P acquisition sets, N being a total number of pulses emitted, creating one combined trace of the reflected signal of j × P points by adding each point of the M traces Additionally, the combined trace can be compared to a detected reference reflection signal of the pulse to determine a distance traveled by the pulse.
G01S 17/10 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement utilisant la transmission d'ondes à modulation d'impulsion interrompues
G01S 7/4865 - Mesure du temps de retard, p.ex. mesure du temps de vol ou de l'heure d'arrivée ou détermination de la position exacte d'un pic
29.
LIGHTING SYSTEM WITH DRIVER ASSISTANCE CAPABILITIES
The present application adds detection capabilities to perceive the presence and/or measure the velocity of obstacles such as automobiles, trucks, pedestrian and other users, to vehicle lighting modules as headlamp, tail lamps, centre high mount stop lamp (CHMSL) and interior lighting to name a few, for driver assistance applications like adaptive cruise control, blind spot and pre-crash assist. For example, a Light Emitting Diode (LED) has the capability to be used as lighting source for illumination as a first function and also be pulsed or modulated as a source for the detection sub-system as a second function.
B60R 21/0134 - Circuits électriques pour déclencher le fonctionnement des dispositions de sécurité en cas d'accident, ou d'accident imminent, de véhicule comportant des moyens pour détecter les collisions, les collisions imminentes ou un renversement réagissant à un contact imminent avec un obstacle
B60W 30/08 - Anticipation ou prévention de collision probable ou imminente
30.
LIGHTING SYSTEM WITH TRAFFIC MANAGEMENT CAPABILITIES
The present lighting system adds detection capabilities to perceive the presence and measure the velocity of objects such as automobiles, trucks, pedestrian and other users, to lighting modules for transportation applications like traffic signal, pedestrian control, rails signal, street light, message board and speed monitoring board. For example, a Light Emitting Diode (LED) has the capability to be used as lighting source for illumination as a first function and also be pulsed or modulated as a source for the detection sub-system as a second function.
A method for detecting an object using visible light comprises providing a visible-light source having a function of illuminating an environment. The visible-light source is driven to emit visible light in a predetermined mode, with visible light in the predetermined mode being emitted such that the light source maintains said function of illuminating an environment. A reflection/backscatter of the emitted visible light is received from an object. The reflection/backscatter is filtered over a selected wavelength range as a function of a desired range of detection from the light source to obtain a light input. The presence or position of the object is identified with the desired range of detection as a function of the light input and of the predetermined mode.
G01S 17/10 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement utilisant la transmission d'ondes à modulation d'impulsion interrompues
B60W 30/095 - Prévision du trajet ou de la probabilité de collision
G01S 17/04 - Systèmes de détermination de la présence d'une cible
F21V 33/00 - Combinaisons structurales de dispositifs d'éclairage avec d'autres objets, non prévues ailleurs
G01S 17/06 - Systèmes déterminant les données relatives à la position d'une cible
G01S 17/931 - Systèmes lidar, spécialement adaptés pour des applications spécifiques pour prévenir les collisions de véhicules terrestres
B60Q 1/02 - Agencement des dispositifs de signalisation optique ou d'éclairage, leur montage, leur support ou les circuits à cet effet les dispositifs étant principalement destinés à éclairer la route en avant du véhicule ou d'autres zones de la route ou des environs
An object-detecting lighting system (10) comprises a light source (12) emitting visible light. A source controller (14) is connected to the light source (12) to drive the light source (12) into emitting the visible light in a predetermined mode. An optical detector (16) is positioned with respect to the light source (12) and is adapted to detect the visible light as reflected/backscattered by an object (A). A data/signal processor (18) is connected to the source controller (14) and the optical detector (16) to receive detection data from the optical detector (16). The data/signal processor (18) produces a data output associated to the object (A) as a function of the predetermined mode and the detection data.
G01S 17/08 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement
F21K 9/00 - Sources lumineuses utilisant des dispositifs à semi-conducteurs en tant qu’éléments générateurs de lumière, p.ex. utilisant des diodes électroluminescentes [LED] ou des lasers
G01S 17/04 - Systèmes de détermination de la présence d'une cible
B60R 21/013 - Circuits électriques pour déclencher le fonctionnement des dispositions de sécurité en cas d'accident, ou d'accident imminent, de véhicule comportant des moyens pour détecter les collisions, les collisions imminentes ou un renversement
G01S 17/931 - Systèmes lidar, spécialement adaptés pour des applications spécifiques pour prévenir les collisions de véhicules terrestres
brevets
