A sensor assembly for a fastener assembly comprising a nut and a bolt comprises a sensor unit mounted in a cavity in the nut of the fastener assembly having an internal opening in the internal thread of the nut. The sensor unit comprises an optical flow sensor arranged to capture an image of the external thread of the bolt through the internal opening and to sense relative movement of the external thread of the bolt.
F16B 31/02 - Screwed connections specially modified in view of tensile load; Break-bolts for indicating or limiting tensile load
G01L 5/24 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
A location system for locating workers including a plurality of light detectors mounted at known locations and configured to detect light from one or more workers, and a processing system configured to determine locations of the workers using the light detected by the light detectors. There is also disclosed a wearable device for locating a worker including a wireless transceiver, and a wearable device light source and/or one or more reflective elements. There is also disclosed a method for locating workers including detecting light from one or more workers using a plurality of light detectors mounted at known locations, and determining locations of the workers using the light detected by the light detectors.
G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
G01S 17/48 - Active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves
G01S 17/88 - Lidar systems, specially adapted for specific applications
G08B 21/02 - Alarms for ensuring the safety of persons
A safety sensing system implements a method for a person in an industrial environment comprises providing a personnel locator device (10) for location on a person and a reference system comprising a plurality of nodes (20) located at predetermined locations in the industrial environment (100). Radio ranging signals are transmitted between the nodes (20) and the personnel locator device (10) and measurements of times of flight of the radio ranging signals are derived. The location of the personnel locator device (10) is calculated based on the measurements of the times of flight of the radio ranging signals and reference information representing the predetermined locations of the nodes (10). It is determined if the calculated location of the personnel locator device (10) is within one or more danger zones in the industrial environment (100) and a warning signal is output in response thereto.
G01S 13/76 - Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
G01S 13/02 - Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
G01S 13/87 - Combinations of radar systems, e.g. primary radar and secondary radar
G01S 13/88 - Radar or analogous systems, specially adapted for specific applications
G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
A safety sensing system implements a method for a person in an industrial environment comprises providing a personnel locator device (10) for location on a person and a reference system comprising a plurality of nodes (20) located at predetermined ocations in the industrial environment (100). Radio ranging signals are transmitted between the nodes (20) and the personnel locator device (10) and measurements of times of flight of the radio ranging signals are derived. The location of the personnel locator device (10) is calculated based on the measurements of the times of flight of the radio ranging signals and reference information representing the predetermined locations of the nodes (10). It is determined if the calculated location of the personnel locator device (10) is within ne or more danger zones in the industrial environment (100) and a warning signal is output in response thereto.
G01S 13/76 - Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
G01S 13/02 - Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
G01S 13/87 - Combinations of radar systems, e.g. primary radar and secondary radar
G01S 13/88 - Radar or analogous systems, specially adapted for specific applications
G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
There is provided a sensor unit for a fastener assembly, the sensor unit comprising a mounting arranged to rigidly attach the sensor unit to, or adjacent to, a fastener assembly; and a sensor, that is an optical flow sensor or an inductive sensor, configured to sense movement of the fastener assembly. The sensor unit may comprise a processor arranged to process the output of the sensor to detect loosening of the fastener assembly and to output a signal representing the status of the fastener assembly. The sensor unit may comprise a wireless communication unit arranged to communicate the signal.
F16B 31/04 - Screwed connections specially modified in view of tensile load; Break-bolts for maintaining constant tensile load
G01D 11/30 - Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
G01D 21/02 - Measuring two or more variables by means not covered by a single other subclass
G01N 27/90 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
A sensor assembly (20) for a fastener assembly comprising a nut (4) and a bolt (3) comprises a sensor unit mounted in a cavity (21) in the nut of the fastener assembly having an internal opening (22) in the internal thread (9) of the nut. The sensor unit (30) comprises an optical flow sensor (33) arranged to capture an image of the external thread of the bolt through the internal opening and to sense relative movement of the external thread of the bolt.
F16B 31/02 - Screwed connections specially modified in view of tensile load; Break-bolts for indicating or limiting tensile load
G01L 5/24 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
A location system for locating workers including a plurality of light detectors mounted at known locations and configured to detect light from one or more workers, and a processing system configured to determine locations of the workers using the light detected by the light detectors. There is also disclosed a wearable device for locating a worker including a wireless transceiver, and a wearable device light source and/or one or more reflective elements. There is also disclosed a method for locating workers including detecting light from one or more workers using a plurality of light detectors mounted at known locations, and determining locations of the workers using the light detected by the light detectors.
G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
G01S 17/48 - Active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves
G01S 17/88 - Lidar systems, specially adapted for specific applications
G08B 21/02 - Alarms for ensuring the safety of persons
A safety sensing system implements a method for a person in an industrial environment comprises providing a personnel locator device (10) for location on a person and a reference system comprising a plurality of nodes (20) located at predetermined locations in the industrial environment (100). Radio ranging signals are transmitted between the nodes (20) and the personnel locator device (10) and measurements of times of flight of the radio ranging signals are derived. The location of the personnel locator device (10) is calculated based on the measurements of the times of flight of the radio ranging signals and reference information representing the predetermined locations of the nodes (10). It is determined if the calculated location of the personnel locator device (10) is within one or more danger zones in the industrial environment (100) and a warning signal is output in response thereto.
A sensor probe for analysis of a fluid includes a base, and a pair of electrodes and a pair of shield members protruding from the base for insertion into the fluid. The electrodes have electrical oscillations generated therein for measurement of electromagnetic properties of the fluid, such as permittivity. The shield members are disposed outside the electrodes and have a dual purpose of electromagnetically shielding the electrodes and having vibrations generated therein for measurement of physical parameters of the fluid, such as density or viscosity. Thus, the single sensor probe can provide measurements of both electromagnetic properties and physical properties of the fluid.
G01N 27/22 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
09 - Scientific and electric apparatus and instruments
Goods & Services
Measuring, detecting, monitoring and controlling devices, namely for measuring the movement of a part, valve, surface, nut, bolt or other fastener or connector; Sensors, detectors and monitoring instruments, namely for detecting the motion of a part, valve, surface, nut, bolt or other fastener or connector; Sensors, namely inductive sensors, eddy current sensors, accelerometers, inertial sensors, capacitive sensors, proximity sensors, rotation sensors, infrared sensors and bolt monitoring sensors; measuring devices, namely devices for measuring movement of a valve, part, surface, nut, bolt or other fastener or connector; torque transducers; Optical sensors; Electro-optical sensors; torque meters; torque measuring apparatus; digital torque gauges; Safety, security, protection and signalling devices, namely devices for warning of movement of a valve, part, surface, nut, bolt or other fastener or connector; Electronic sensors for detecting movement; Monitoring instruments, namely, electronic monitors for monitoring movement of a part, valve, surface, nut, bolt or other fastener or connector; Safety devices for nuts, bolts and other fasteners and connectors, namely instruments which detect loosening of a part, surface, valve, nut, bolt or other fastener or connector; safety devices for rotatable shafts, namely safety markers; indicator devices for a part, valve, surface, nut, bolt or other fastener or connector, namely electronic indicators for indicating when movement has occurred; indicator devices for rotatable devices, namely movement indicators to identify movement of a part, valve, surface, nut, bolt or other fastener or connector
A sensor unit for a fingerboard latch assembly that comprises a latch bracket and a latch rotatably supported on the latch bracket is mountable on the latch. The sensor unit comprises a sensor configured to sense an adjacent tubular, and a processor that processes the output of the sensor to provide a tubular monitor signal representing the presence or absence of an adjacent tubular A wireless communication unit wirelessly communicates the tubular monitor signal. This allows a wireless sensor unit to be provided that is suitable for operation in remote locations and can verify the presence or absence of tubular to ensure it is securely stored in a fingerboard.
E21B 19/14 - Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole
G01D 5/12 - 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
There is provided a sensor unit for a fastener assembly, the sensor unit comprising a mounting arranged to rigidly attach the sensor unit to, or adjacent to, a fastener assembly; and a sensor, that is an optical flow sensor or an inductive sensor, configured to sense movement of the fastener assembly. The sensor unit may comprise a processor arranged to process the output of the sensor to detect loosening of the fastener assembly and to output a signal representing the status of the fastener assembly. The sensor unit may comprise a wireless communication unit arranged to communicate the signal.
09 - Scientific and electric apparatus and instruments
Goods & Services
Measuring, detecting, monitoring and controlling devices; Sensors, detectors and monitoring instruments; Sensors; measuring devices; torque transducers; Optical sensors; Electro-optical sensors; torque meters; torque measuring apparatus; digital torque gauges; Safety, security, protection and signalling devices; Electronic sensors; Electric and electronic components; Monitoring instruments; Checking (supervision) apparatus and instruments; Safety devices for nuts, bolts and other fasteners and connectors; locking devices for nuts, bolts and other fasteners and connectors; safety devices for rotatable shafts; indicator devices for nuts, bolts and other fasteners and connectors; indicator devices for rotatable devices.
A wireless network comprises nodes, including routers having a tree-shaped communication topology and end devices, communicate in accordance a network protocol, wherein the routers transmit beacons in respective timeslots within a periodic beaconing interval, passively scan for messages, and, in response to receiving a message, transmit an acknowledgement thereof the received message. An end device that has a message that is pending transmission, passively scans for beacons transmitted from any router; and in response thereto, transmits the message, and passively scans for an acknowledgement, repeating those steps if no acknowledgement is received. This provides responsivity in an environment having rapidly changing propagation paths. To reduce power consumption, the end devices do not passively scan for beacons except when they have a message that is pending transmission, and also at predetermined times for reception of a downstream message. When radio silence is required, the routers do not transmit beacons.
H04W 40/24 - Connectivity information management, e.g. connectivity discovery or connectivity update
H04L 1/18 - Automatic repetition systems, e.g. Van Duuren systems
H04W 40/22 - Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
A safety sensing system implements a method for a person in an industrial environment comprises providing a personnel locator device (10) for location on a person and a reference system comprising a plurality of nodes (20) located at predetermined locations in the industrial environment (100). Radio ranging signals are transmitted between the nodes (20) and the personnel locator device (10) and measurements of times of flight of the radio ranging signals are derived. The location of the personnel locator device (10) is calculated based on the measurements of the times of flight of the radio ranging signals and reference information representing the predetermined locations of the nodes (10). It is determined if the calculated location of the personnel locator device (10) is within one or more danger zones in the industrial environment (100) and a warning signal is output in response thereto.
G01S 17/48 - Active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves
G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
G01S 17/88 - Lidar systems, specially adapted for specific applications
A safety sensing system implements a method for a person in an industrial environment comprises providing a personnel locator device (10) for location on a person and a reference system comprising a plurality of nodes (20) located at predetermined locations in the industrial environment (100). Radio ranging signals are transmitted between the nodes (20) and the personnel locator device (10) and measurements of times of flight of the radio ranging signals are derived. The location of the personnel locator device (10) is calculated based on the measurements of the times of flight of the radio ranging signals and reference information representing the predetermined locations of the nodes (10). It is determined if the calculated location of the personnel locator device (10) is within one or more danger zones in the industrial environment (100) and a warning signal is output in response thereto.
G01S 17/48 - Active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves
G01S 17/88 - Lidar systems, specially adapted for specific applications
G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
A location system for locating workers in including a plurality of light detectors mounted at known locations and configured to detect light from one or more workers, and a processing system configured to determine locations of the workers using the light detected by the light detectors. There is also disclosed a wearable device for locating a worker including a wireless transceiver, and a wearable device light source and/or one or more reflective elements. There is also disclosed a method for locating workers including detecting light from one or more workers using a plurality of light detectors mounted at known locations, and determining locations of the workers using the light detected by the light detectors.
G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
G01S 17/48 - Active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves
G01S 17/88 - Lidar systems, specially adapted for specific applications
G08B 21/02 - Alarms for ensuring the safety of persons
G08B 7/06 - Signalling systems according to more than one of groups ; Personal calling systems according to more than one of groups using electric transmission
A sensor system for sensing the contents of a bore including a plurality of coils disposed behind a non-metallic lining. An oscillator circuit may be used to drive the coils to generate oscillating electromagnetic fields, and a detection circuit generates output signals from each coil representing a parameter of the electrical oscillations that depends on the contents of the bore. The coils may include a primary coil and a one secondary coil, wherein the oscillating electromagnetic field generated by the secondary coil has a lesser degree of interaction with the contents of bore than the oscillating electromagnetic field generated by the primary coil. The sensor system may use the output signal from the secondary coil to compensate the output signal from the primary coil for environmental effects.
G01V 3/28 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device using induction coils
G01V 3/10 - 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 using induction coils
E21B 47/092 - Locating or determining the position of objects in boreholes or wells; Identifying the free or blocked portions of pipes by detecting magnetic anomalies
A sensor unit mountable on a rotatable element on a platform that is itself movable, and includes an orientation sensor arranged to take measurements that are dependent on the orientation of the sensor unit, a processor arranged to derive a rotational position signal representing the orientation of the rotatable element from the measurements, and a buffer arranged to buffer a series of recent measurements taken by the orientation sensor over a predetermined period of time. The processor derives the rotational position signal making a correction to compensate for the effect of the motion of the platform on the measurements on the basis of the overall series of measurements buffered in the buffer.
A sensor probe for analysis of a fluid includes a base, and a pair of electrodes and a pair of shield members protruding from the base for insertion into the fluid. The electrodes have electrical oscillations generated therein for measurement of electromagnetic properties of the fluid, such as permittivity. The shield members are disposed outside the electrodes and have a dual purpose of electromagnetically shielding the electrodes and having vibrations generated therein for measurement of physical parameters of the fluid, such as density or viscosity. Thus, the single sensor probe can provide measurements of both electromagnetic properties and physical properties of the fluid.
G01N 27/22 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
G01N 29/032 - Analysing fluids by measuring attenuation of acoustic waves
G01N 29/036 - Analysing fluids by measuring frequency or resonance of acoustic waves
G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object - Details
A sensor probe for analysis of a fluid includes a base, and a pair of electrodes and a pair of shield members protruding from the base for insertion into the fluid. The electrodes have electrical oscillations generated therein for measurement of electromagnetic properties of the fluid, such as permittivity. The shield members are disposed outside the electrodes and have a dual purpose of electromagnetically shielding the electrodes and having vibrations generated therein for measurement of physical parameters of the fluid, such as density or viscosity. Thus, the single sensor probe can provide measurements of both electromagnetic properties and physical properties of the fluid.
G01N 27/22 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
G01N 29/032 - Analysing fluids by measuring attenuation of acoustic waves
G01N 29/036 - Analysing fluids by measuring frequency or resonance of acoustic waves
G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object - Details
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Wireless electronic personnel locator and tracking devices using radio frequency; wireless electronic tracking and locator apparatus and instruments incorporating radio frequency (RF) technology for locating and tracking people and equipment; downloadable software for tracking physical locations of personnel and moving equipment; downloadable software for providing realtime monitoring of personnel and moving equipment; Measuring, detecting and monitoring instruments, namely, level indicators, controllers for GPS tracking devices, and motion sensors, all for tracking the physical location of personnel and moving equipment; monitoring equipment other than for medical use, namely, wireless electronic trackers for wirelessly tracking and identifying the physical locations of personnel and moving equipment using radio frequency; protective and safety equipment, namely, protective clothing in the nature of clothing for protection against accidents, all incorporating wireless trackers for identifying physical locations of the users of the protective and safety equipment; protective and safety equipment, namely, protective helmets incorporating wireless trackers for identifying physical locations of the users of the protective and safety equipment Machine condition monitoring, namely, monitoring drilling and robotic equipment to ensure proper functioning
A location system for locating workers comprises a plurality of light detectors mounted at known locations and configured to detect light from one or more workers, and a processing system configured to determine locations of the workers using the light detected by the light detectors. There is also disclosed a wearable device for locating a worker comprising a wireless transceiver, and a wearable device light source and/or one or more reflective elements. There is also disclosed a method for locating workers comprising detecting light from one or more workers using a plurality of light detectors mounted at known locations, and determining locations of the workers using the light detected by the light detectors.
G01S 17/48 - Active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves
G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
G01S 17/88 - Lidar systems, specially adapted for specific applications
A location system for locating workers comprises a plurality of light detectors mounted at known locations and configured to detect light from one or more workers, and a processing system configured to determine locations of the workers using the light detected by the light detectors. There is also disclosed a wearable device for locating a worker comprising a wireless transceiver, and a wearable device light source and/or one or more reflective elements. There is also disclosed a method for locating workers comprising detecting light from one or more workers using a plurality of light detectors mounted at known locations, and determining locations of the workers using the light detected by the light detectors.
G01S 17/48 - Active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves
G01S 17/88 - Lidar systems, specially adapted for specific applications
G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
A sensor assembly is provided for a fingerboard latch assembly that comprises: a latch bracket; bolts for mounting the latch bracket to a fingerboard; a latch; and a bracket pin rotatably supporting the latch on the latch bracket to allow rotation of the latch between an open position and a closed position. The sensor assembly has a mounting arrangement that mounts to the bolts, holding a closed-position proximity sensor probe facing downwardly for sensing proximity of a crank portion of the latch and/or the piston head in the closed position, and also holding an open-position proximity sensor probe facing forwardly for sensing proximity of an arm of the latch in the open position.
H01H 36/00 - Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
E21B 47/092 - Locating or determining the position of objects in boreholes or wells; Identifying the free or blocked portions of pipes by detecting magnetic anomalies
A sensor unit for a fingerboard latch assembly comprising a latch bracket and a latch rotatably mounted on the latch bracket comprises a sensor arranged to sense the orientation of the latch and a wireless, optical or other communication unit arranged to communicate the orientation of the latch sensed by the sensor. The sensor unit may be mountable on the latch and comprise an orientation sensor arranged to take measurements that are dependent on the orientation of the sensor unit, and a processor arranged to derive an orientation signal representing the orientation of the latch from the measurements, the communication unit being arranged to communicate the orientation signal. A monitoring system receives the sensed orientations from plural sensor units.
E21B 19/14 - Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole
E21B 19/15 - Racking of rods in horizontal position; Handling between horizontal and vertical position
E21B 23/04 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
E21B 47/09 - Locating or determining the position of objects in boreholes or wells; Identifying the free or blocked portions of pipes
A sensor unit for a fingerboard latch assembly that comprises a latch bracket and a latch rotatably supported on the latch bracket is mountable on the latch. The sensor unit comprises a sensor configured to sense an adjacent tubular, and a processor that processes the output of the sensor to provide a tubular monitor signal representing the presence or absence of an adjacent tubular A wireless communication unit wirelessly communicates the tubular monitor signal. This allows a wireless sensor unit to be provided that is suitable for operation in remote locations and can verify the presence or absence of tubular to ensure it is securely stored in a fingerboard.
E21B 19/16 - Connecting or disconnecting pipe couplings or joints
E21B 19/14 - Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
E21B 47/09 - Locating or determining the position of objects in boreholes or wells; Identifying the free or blocked portions of pipes
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Personnel tracking devices; Electronic tracking apparatus and instruments; software for tracking physical location of personnel and moving equipment; software for providing realtime monitoring of personnel and moving equipment; Measuring, detecting and monitoring instruments, indicators and controllers; Sensors; detectors; monitoring equipment other than for medical use; protective and safety equipment. Machine condition monitoring.
A wireless network comprises nodes, including routers having a tree-shaped communication topology and end devices, communicate in accordance a network protocol, wherein the routers transmit beacons in respective timeslots within a periodic beaconing interval, passively scan for messages, and, in response to receiving a message, transmit an acknowledgement thereof the received message. An end device that has a message that is pending transmission, passively scans for beacons transmitted from any router; and in response thereto, transmits the message, and passively scans for an acknowledgement, repeating those steps if no acknowledgement is received. This provides responsivity in an environment having rapidly changing propagation paths. To reduce power consumption, the end devices do not passively scan for beacons except when they have a message that is pending transmission, and also at predetermined times for reception of a downstream message. When radio silence is required, the routers do not transmit beacons.
A wireless network comprises nodes, including routers having a tree-shaped communication topology and end devices, communicate in accordance a network protocol, wherein the routers transmit beacons in respective timeslots within a periodic beaconing interval, passively scan for messages, and, in response to receiving a message, transmit an acknowledgement thereof the received message. An end device that has a message that is pending transmission, passively scans for beacons transmitted from any router; and in response thereto, transmits the message, and passively scans for an acknowledgement, repeating those steps if no acknowledgement is received. This provides responsivity in an environment having rapidly changing propagation paths. To reduce power consumption, the end devices do not passively scan for beacons except when they have a message that is pending transmission, and also at predetermined times for reception of a downstream message. When radio silence is required, the routers do not transmit beacons.
A sensor unit for a fingerboard latch assembly comprising a latch bracket and a latch rotatably mounted on the latch bracket comprises a sensor arranged to sense the orientation of the latch and a wireless, optical or other communication unit arranged to communicate the orientation of the latch sensed by the sensor. The sensor unit may be mountable on the latch and comprise an orientation sensor arranged to take measurements that are dependent on the orientation of the sensor unit, and a processor arranged to derive an orientation signal representing the orientation of the latch from the measurements, the communication unit being arranged to communicate the orientation signal. A monitoring system receives the sensed orientations from plural sensor units.
E21B 23/04 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
E21B 47/09 - Locating or determining the position of objects in boreholes or wells; Identifying the free or blocked portions of pipes
A sensor assembly is provided for a fingerboard latch assembly that comprises: a latch bracket; bolts for mounting the latch bracket to a fingerboard; a latch; and a bracket pin rotatably supporting the latch on the latch bracket to allow rotation of the latch between an open position and a closed position. The sensor assembly has a mounting arrangement that mounts to the bolts, holding a closed-position proximity sensor probe facing downwardly for sensing proximity of a crank portion of the latch and/or the piston head in the closed position, and also holding an open-position proximity sensor probe facing forwardly for sensing proximity of an arm of the latch in the open position.
F16L 3/00 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
E21B 19/14 - Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
E21B 47/09 - Locating or determining the position of objects in boreholes or wells; Identifying the free or blocked portions of pipes
G01D 11/30 - Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
H01H 36/00 - Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
H03K 17/95 - Proximity switches using a magnetic detector
A sensor unit for a fingerboard latch assembly comprising a latch bracket and a latch rotatably mounted on the latch bracket comprises a sensor arranged to sense the orientation of the latch and a wireless, optical or other communication unit arranged to communicate the orientation of the latch sensed by the sensor. The sensor unit may be mountable on the latch and comprise an orientation sensor arranged to take measurements that are dependent on the orientation of the sensor unit, and a processor arranged to derive an orientation signal representing the orientation of the latch from the measurements, the communication unit being arranged to communicate the orientation signal. A monitoring system receives the sensed orientations from plural sensor units.
E21B 19/14 - Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole
F16L 3/00 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
F16B 39/12 - Locking of screws, bolts, or nuts in which the locking takes place after screwing down by means of locknuts
E21B 23/04 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
E21B 47/09 - Locating or determining the position of objects in boreholes or wells; Identifying the free or blocked portions of pipes
A sensor assembly is provided for a fingerboard latch assembly that comprises: a latch bracket; bolts for mounting the latch bracket to a fingerboard; a latch; and a bracket pin rotatably supporting the latch on the latch bracket to allow rotation of the latch between an open position and a closed position. The sensor assembly has a mounting arrangement that mounts to the bolts, holding a closed-position proximity sensor probe facing downwardly for sensing proximity of a crank portion of the latch and/or the piston head in the closed position, and also holding an open-position proximity sensor probe facing forwardly for sensing proximity of an arm of the latch in the open position.
F16L 3/00 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
E21B 19/14 - Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
E21B 47/09 - Locating or determining the position of objects in boreholes or wells; Identifying the free or blocked portions of pipes
G01D 11/30 - Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
H01H 36/00 - Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
H03K 17/95 - Proximity switches using a magnetic detector
A sensor system (1) for sensing the contents of a bore comprises plural coils (11) disposed behind a non-metallic lining (10). An oscillator circuit (41) drives electrical oscillations in the coils to generate oscillating electromagnetic fields, and a detection circuit (42) outputs signals from each coil representing a parameter of the electrical oscillations that depends on the contents of the bore. The coils include a primary coil (5) and a secondary coil (6), wherein the oscillating electromagnetic field generated by the secondary coil has a lesser degree of interaction with the contents of bore than the oscillating electromagnetic field generated by the primary coil. The sensor system compensates the output signal from the primary coil for environmental effects using the output signal from secondary coil.
E21B 47/09 - Locating or determining the position of objects in boreholes or wells; Identifying the free or blocked portions of pipes
G01V 3/10 - 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 using induction coils
A sensor insert (1) for insertion in a bore (2) comprises a tubular wall (10) of non-conductive material for lining the bore and a plurality of sensing coils (11) supported by the tubular wall behind the inner surface of the tubular wall at different angular positions and facing the inner surface of the tubular wall for generating an electromagnetic field extending therethrough. A tubular shield (12) of conductive material is arranged outside the coils providing a reference plane for the sensing coils. An annular cavity (14) is disposed between the tubular wall and the tubular shield. The annular cavity contains a liquid and the sensor insert further comprises a pressure balancing unit (20) in fluid communication with the annular cavity and the bore to balance the pressures therewithin, thereby preventing distortion of the tubular wall and tubular shield.
E21B 47/09 - Locating or determining the position of objects in boreholes or wells; Identifying the free or blocked portions of pipes
G01V 3/10 - 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 using induction coils
A sensor unit (10) is mountable on a rotatable element (5) on a platform (3) that is itself movable, and comprises an orientation sensor arranged to take measurements that are dependent on the orientation of the sensor unit, a processor arranged to derive a rotational position signal representing the orientation of the rotatable element from the measurements, and a buffer arranged to buffer a series of recent measurements taken by the orientation sensor over a predetermined period of time. The processor derives the rotational position signal making a correction to compensate for the effect of the motion of the platform on the measurements on the basis of the overall series of measurements buffered in the buffer.
A sensor unit (10) is mountable on a rotatable element (5) on a platform (3) that is itself movable, and comprises an orientation sensor arranged to take measurements that are dependent on the orientation of the sensor unit, a processor arranged to derive a rotational position signal representing the orientation of the rotatable element from the measurements, and a buffer arranged to buffer a series of recent measurements taken by the orientation sensor over a predetermined period of time. The processor derives the rotational position signal making a correction to compensate for the effect of the motion of the platform on the measurements on the basis of the overall series of measurements buffered in the buffer.
A sensor unit for a fingerboard latch assembly comprising a latch bracket and a latch rotatably mounted on the latch bracket comprises a sensor arranged to sense the orientation of the latch and a wireless, optical or other communication unit arranged to communicate the orientation of the latch sensed by the sensor. The sensor unit may be mountable on the latch and comprise an orientation sensor arranged to take measurements that are dependent on the orientation of the sensor unit, and a processor arranged to derive an orientation signal representing the orientation of the latch from the measurements, the communication unit being arranged to communicate the orientation signal. A monitoring system receives the sensed orientations from plural sensor units.
E21B 19/14 - Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole
F03G 7/08 - Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for recovering energy derived from swinging, rolling, pitching, or like movements, e.g. from the vibrations of a machine
F16L 3/00 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
G08C 17/00 - Arrangements for transmitting signals characterised by the use of a wireless electrical link
G08C 17/02 - Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
G08C 23/04 - Non-electric signal transmission systems, e.g. optical systems using light waves, e.g. infrared
A sensor unit (30) for a fingerboard latch assembly (2) comprising a latch bracket (3) and a latch (5) rotatably mounted on the latch bracket comprises a sensor (30) arranged to sense the orientation of the latch and a wireless, optical or other communication unit (47, 16) arranged to communicate the orientation of the latch sensed by the sensor. The sensor unit may be mountable on the latch and comprise an orientation sensor arranged to take measurements that are dependent on the orientation of the sensor unit, and a processor arranged to derive an orientation signal representing the orientation of the latch from the measurements, the communication unit being arranged to communicate the orientation signal. A monitoring system receives the sensed orientations from plural sensor units.
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Monitoring instruments, namely, monitors for measuring oil, water, salinity and solid values in drilling fluid; Electric monitoring control apparatus, namely, monitors for measuring oil, water, salinity and solid values in drilling fluid; Electric monitoring units for use in measuring oil, water, salinity and solid values in drilling fluid; Electronic monitoring instruments, other than for medical use for monitoring oil, water, salinity and solid values in drilling fluid; Measuring, detecting and monitoring instruments, indicators and controllers, namely, electric sensors; Remote monitoring apparatus, namely sensors for measuring oil, water, salinity and solid values in drilling fluid; Electric monitors for monitoring oil, water, salinity and solid values in drilling fluid; drilling fluid analysis equipment, namely, measuring instruments for measuring the viscosity of fluids; computer software for analyzing fluids Oil well logging and testing; Well logging; Water analysis; Water quality control services; testing and quality control services in the field of analyzing drilling fluids
09 - Scientific and electric apparatus and instruments
Goods & Services
Safety couplings for machines; Couplings for machines; Cargo handling machines; Machines for loading; Material handling machines; Material handling machines, namely, pipe handling equipment and tubular handling equipment; Automatic manipulators for the remoteoperation of robotic arms; Loading and unloading machines; Robotic arms for industrial purposes; Oil refining machines Electric safety monitoring apparatus, namely, safety devices in the nature of crane load sensors for use in preventing overloading or turning over of construction cranes; Electric safety locking devices, namely, electronic lock assemblies, pneumatic lock assemblies; Safety, security, protection and signalling devices, namely, proximity sensors, position sensors, encoders, electric actuators; Safety apparatus for the prevention of accident or injury, namely, fingerboard latches for securing stands of drill pipe in a derrick, fingerboards or bellyboards for securing and retaining stands of tubular while drilling; Electric sensor switches; Electrical sensor controllers; Electronic sensors for position sensing and confirmation; Electrical sensors; Electric oscillators; Electromagnetic relays; Electromagnetic switches; Electric and electronic components, namely, piezoelectric switches; Electrical circuit switches and circuit boards; Electronic controllers; Detecting and monitoring instruments, indicators and controllers, namely, valve position sensors, sensors for confirming position of equipment used to handle tubulars during drilling; Electric sensors and motion detectors
09 - Scientific and electric apparatus and instruments
Goods & Services
Safety couplings for machines; Couplings for machines; Cargo handling machines; Machines for loading; Machines for the handling of materials; Handling machines, automatic [manipulators]; Handling apparatus for loading and unloading; Robotic handling apparatus; Robotic separators; Agricultural, earthmoving, construction, oil and gas extraction and mining equipment; Oil refining machines; Clamp connectors for piping [parts of machines]. Safety monitoring apparatus [electric]; Safety locking devices [electric]; Safety, security, protection and signalling devices; Safety apparatus [for the prevention of accident or injury]; Sensor switches; Sensor controllers; Electronic sensors; Electrical sensors; Electric oscillators; Electromagnetic relays; Electromagnetic switches; Electric and electronic components; Electrical circuits and circuit boards; Electronic control instruments; Apparatus, instruments and cables for electricity; Measuring, detecting and monitoring instruments, indicators and controllers; Monitoring instruments; Sensors and detectors; Checking (supervision) apparatus and instruments.
An elongate component such as a drill string of drill pipes connected by joint sections inside a bore is sensed using at least one set of electromagnetic coils, the coils within the set being arranged at different angular positions around the bore facing the bore. There may be at least two sets of coils separated along the axial direction of the bore. Electrical oscillations are generated in the coils to produce oscillating electromagnetic fields that interact with the contents of the bore. A parameter of the electrical oscillations generated in each coil is detected. The detected parameters may be used to derive both (1) a measure of the axial position along the bore, and (2) a measure of the lateral position. The detected parameters may be used to derive a measure of electromagnetic properties of the contents of the pipe in a region adjacent each coil, thereby imaging the contents of the pipe.
A fluid conduit comprises a wall defining a fluid flow path and a confinement feature within the wall and being configured to confine energy within a cavity, wherein at least a portion of the fluid flow path extends through the cavity. The confinement feature may be configured to confine electromagnetic energy. The fluid conduit may comprise an oscillator defined by the cavity and a positive feedback arrangement. The fluid conduit may be configured for sensing a property of a fluid present in or flowing through the fluid conduit or for use in sensing a property of a fluid present in or flowing through the fluid conduit.
F16L 9/14 - Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
G01N 22/00 - Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object - Details
G01F 1/58 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
G01F 1/32 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
G01F 1/66 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
A sensor assembly is provided for a fingerboard latch assembly that comprises: a latch bracket; bolts for mounting the latch bracket to a fingerboard; a latch; and a bracket pin rotatably supporting the latch on the latch bracket to allow rotation of the latch between an open position and a closed position. The sensor assembly has a mounting arrangement that mounts to the bolts, holding a closed-position proximity sensor probe facing downwardly for sensing proximity of a crank portion of the latch and/or the piston head in the closed position, and also holding an open-position proximity sensor probe facing forwardly for sensing proximity of an arm of the latch in the open position.
G01D 11/30 - Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
F16L 3/00 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
H03K 17/95 - Proximity switches using a magnetic detector
E21B 19/14 - Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole
E21B 47/09 - Locating or determining the position of objects in boreholes or wells; Identifying the free or blocked portions of pipes
H01H 36/00 - Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
A sensor arrangement for a rotatable element comprises two coils capable of being driven by oscillatory drive signals to generate electromagnetic fields. The coils are in different positions overlying a cylindrical portion of the rotatable element that has a target feature configured to interact with the generated electromagnetic fields when the target feature is aligned with the coils. Alignment between the target feature and the coils occurs at angular positions of the rotatable element that are offset for respective coils. Thus, by detecting a characteristic of the signals developed across the coils allowing derivation of an angular velocity signal representative of angular velocity. Also, the degree of interaction between the target feature and the electromagnetic fields varies with the axial position of the rotatable element, differentially between the coils, allowing derivation of an axial position signal representative of the axial position of the rotatable element.
G01D 5/243 - 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 influencing the phase or frequency of ac
F15B 19/00 - Testing fluid-pressure actuator systems or apparatus, so far as not provided for elsewhere
G01D 5/20 - 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 influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
F04D 15/00 - Control, e.g. regulation, of pumps, pumping installations, or systems
A sensor system comprises a marginal oscillator. A tank circuit comprises inductive and capacitive elements including a probe arranged to generate an electromagnetic field in a sensing region. A non-linear drive circuit drives oscillation of the tank circuit by supplying a differential signal pair of complementary signals across the tank circuit, sustaining the oscillation on the basis of at least one of the complementary signals. A detection circuit detects a characteristic of the oscillation of the tank circuit that is dependent on the electromagnetic properties of the contents of the sensing region and to derive a signal representing the at least one characteristic. The differential signalling provides numerous advantages, including improved accuracy and signal-to-noise.
G01D 5/24 - 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 influencing the magnitude of a current or voltage by varying capacitance
49.
CHARACTERIZATION OF AN OIL AND GAS INDUSTRY SAMPLE
A sample acquired during hydrocarbon exploration or production, and comprising at least one of water, hydrocarbons or solids, is sensed by performing continuous wave nuclear magnetic resonance measurements of the amount of a relevant type of nucleus from which a measure of the composition of the sample is derived. During a scan through resonance of the one or more types of nuclei, there is detected an absorption measurement of the absorbed energy of the electromagnetic field, that may be an integrated measure of instantaneous absorption. Hydrogen nuclei may be measured to derive a measure of the amount of water in the sample. Chlorine nuclei and/or sodium nuclei may be measured to derive a measure of the salinity of the sample.
G01N 24/08 - Investigating or analysing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
G01V 3/32 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with electron or nuclear magnetic resonance
A cavity resonator system for measuring EM properties of the contents of a pipe portion (15p, 15s) comprises a primary resonator (1) and a secondary resonator (2) each with the same configuration comprising a conductive casing (10p, 10s) that defines a cavity (11p, 11s) and has openings (14p, 14s) for receiving a pipe portion, insulator material (18p, 18s) disposed inside the cavity, and antennae (20p, 20s) for generating and detecting a resonant EM field inside the cavity. In addition, the secondary resonator (2) comprises at least one conductive screening ring (25) that extends around the location occupied by a pipe portion (15s) for screening the interior of the ring from the field generated inside the cavity of the secondary resonator. By combining measures of parameters of the field from both resonators, the system may be used to generate a measure representative of EM properties of the contents of the pipe portion that is compensated for variation in the EM properties of the insulator material due to e.g. temperature and pressure.
09 - Scientific and electric apparatus and instruments
37 - Construction and mining; installation and repair services
40 - Treatment of materials; recycling, air and water treatment,
42 - Scientific, technological and industrial services, research and design
Goods & Services
Radio-frequency identification (RFID) tags; Radio-frequency power meters; Radio-frequency controlled locks; Radio-frequency components; Radio-frequency receivers; Radio-frequency transmitter; Radio frequency identification devices [transponders]; Radio-frequency modulators; Radio-frequency filters; Radio-frequency identification (RFID) readers; Radio-frequency antennas; Sensors and detectors; Electricity metering apparatus; Metering apparatus; Fluid metering apparatus; Internet phones; Internet servers; Monitoring instruments; Monitoring control apparatus [electric]; Monitoring apparatus, electric; Liquid level monitoring apparatus; Monitoring units [electric]; Electronic monitoring instruments, other than for medical use; Measuring, detecting and monitoring instruments, indicators and controllers; Remote monitoring apparatus; Monitoring apparatus, electric; Monitoring instruments; Monitoring control apparatus [electric]; Measuring, detecting and monitoring instruments, indicators and controllers; Monitoring units [electric]. Oil and gas drilling; Drilling of deep oil or gas-wells; Drilling; Drilling of wells; Wells (Drilling of -); Water well drilling; Well drilling; Drilling and pumping of oil; Drilling for crude oil; Oil well drilling; Gas drilling; Oil drilling; Drilling of oil wells. Water treatment and purification; Water treatment; Water treatment services; Water purification; Desalination; Desalination of water. Oil well logging and testing; Well logging; Water analysis; Water quality control services.
Fluid sensor and method comprising: an oscillator having operating characteristics. Permittivity sensing element coupled to the oscillator and arranged to alter the operating characteristics of the oscillator in response to changes in permittivity presented to the permittivity sensing element. Reference element comprising an electrical impedance having a real and imaginary component controllably coupled to both the oscillator and the permittivity sensing element and arranged to alter the operating characteristics of the oscillator.
Method of measuring the composition of a fuel comprising the steps of: measuring a real permittivity of the fuel. Measuring an imaginary permittivity of the fuel. Determining a proportion of biodiesel in the fuel based on the measured real permittivity. Determining a proportion of unrefined oil in the fuel based on the measured imaginary permittivity.
G01R 27/26 - Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants
G01N 27/22 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
Target sensor comprising: sensor probe having a resonance frequency that changes as the separation of the sensor probe and a target changes. Oscillator arranged to apply a radio frequency (RF) signal to the sensor probe, the oscillator having: control circuitry configured to regulate the frequency of the RF signal applied to the sensor probe to below the resonance frequency of the sensor probe. Detector arranged to detect an electrical characteristic of the oscillator that varies with the impedance of the sensor probe indicating an interaction of the sensor probe with the target.
G01R 27/28 - Measuring attenuation, gain, phase shift, or derived characteristics of electric four-pole networks, i.e. two-port networks; Measuring transient response
F01D 21/00 - Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
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
H03K 17/95 - Proximity switches using a magnetic detector
F01D 21/04 - Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to undesired position of rotor relative to stator, e.g. indicating such position
A fluid conduit (2) comprises a wall (4) defining a fluid flow path (6) and a confinement feature (24) within the wall (4) and being configured to confine energy within a cavity (26), wherein at least a portion of the fluid flow path (6) extends through the cavity (26). The confinement feature (24) may be configured to confine electromagnetic energy. The fluid conduit (2) may comprise an oscillator defined by the cavity (26) and a positive feedback arrangement (34). The fluid conduit (2) may be configured for sensing a property of a fluid present in or flowing through the fluid conduit (2) or for use in sensing a property of a fluid present in or flowing through the fluid conduit (2). More specifically, the present invention deals with a microwave cavity sensor wherein the cavity member (24) is embedded in the wall (4) of the fluid conduit (2), the wall (4) including a composite region (20).
G01N 22/00 - Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
F16L 11/08 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object - Details
A fluid conduit (2) comprises a wall (4) defining a fluid flow path (6) and a confinement feature (24) within the wall (4) and being configured to confine energy within a cavity (26), wherein at least a portion of the fluid flow path (6) extends through the cavity (26). The confinement feature (24) may be configured to confine electromagnetic energy. The fluid conduit (2) may comprise an oscillator defined by the cavity (26) and a positive feedback arrangement (34). The fluid conduit (2) may be configured for sensing a property of a fluid present in or flowing through the fluid conduit (2) or for use in sensing a property of a fluid present in or flowing through the fluid conduit (2). More specifically, the present invention deals with a microwave cavity sensor wherein the cavity member (24) is embedded in the wall (4) of the fluid conduit (2), the wall (4) including a composite region (20).
G01N 22/00 - Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object - Details
F16L 11/08 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
