600 results about "Inductive sensor" patented technology

The invention discloses an inductive sensor calibration method, an inductive sensor calibration system, a medium and a product. The method comprises the following steps: acquiring a measured value data set of an inductive sensor to be calibrated and a measured value data set of a reference inductive sensor under a preset environment condition; performing difference operation on the measured value data set of the inductive sensor to be calibrated and the measured value data set of the reference inductive sensor to obtain a measurement deviation sequence; based on a preset environment condition and the measurement deviation sequence, determining an environment compensation coefficient under the preset environment condition; calculating calibration parameters of the inductive sensor to be calibrated according to the environment compensation coefficient; after the calibration parameters are applied to the inductive sensor to be calibrated, obtaining a standard measurement value of the reference inductive sensor and an actual measurement value of the inductive sensor to be calibrated under a preset environment condition; if the difference value between the standard measurement value and the actual measurement value is smaller than the preset error value, it is determined that calibration succeeds. By implementing the method, the calibration accuracy is improved.

An inductive sensor system may comprise an upper rotor comprising an upper target having a first metallic pattern; a lower rotor comprising a lower target having a second metallic pattern; and a stationary circuit board positioned between the upper rotor and the lower rotor. The circuit board comprises one or more transmitter coil sets configured to generate electromagnetic field, and one or more receiver coil sets for sensing relative angular displacement movement between the upper rotor and the lower rotor. The one or more transmitter coil sets and the one or more receiver coil sets are circularly wound.

The invention discloses an error compensation inductance sensor calibration method and system, and the method comprises the steps: controlling a macro-micro composite driving platform to drive a moving part provided with a to-be-calibrated inductance sensor, and enabling the moving part to carry out the continuous displacement movement relative to a fixed standard target surface; measuring the actual displacement of the moving part to obtain a standard displacement sequence; the actual output voltage of the inductive sensor to be calibrated in the movement process is synchronously collected, and an actual measurement value sequence is formed; solving measurement deviation, generating a measurement deviation sequence, and dividing the sequence into not less than three compensation intervals according to a displacement range; a compensation value lookup table is established in each compensation interval, and calibration parameters used for correcting zero offset, gain drift and nonlinear characteristics are generated. Displacement measurement and sensor output synchronous acquisition are combined, zero offset, gain drift and non-linear errors can be corrected in a targeted mode, and compensation fineness and adaptability are improved.

An electric linear actuator has a housing extending along a longitudinal axis. A spindle is provided in the housing and extends along the longitudinal axis. A rod is coaxially coupled to the spindle and extends from a proximal end located in the housing to a distal end located outside the housing. The rod is movable along the longitudinal axis in response to rotation of the spindle. A circuit board is located in the housing adjacent the proximal end of the rod. The circuit board includes a linear inductive sensor having a linear axis oriented parallel to the longitudinal axis. The linear inductive sensor senses an actual position of the proximal end of the rod.

A vehicle steering system by wire to control the lateral motion of the vehicle is provided. The system includes a steering wheel torque feedback actuator assembly with two controllers, a front road wheel steering actuator assembly with two zonally isolated motors and controllers, two separate power assemblies, two separate vehicle communication networks in separate wiring bundle assemblies, and three private system communication networks between each node in the steering system. The redundant components are zonally isolated such that common cause of faults do not endanger the system when one or more of the components fails. The system can include differential gearbox road wheel actuator to allow absolute position of the road wheels. The system can further include a set of position sensor assemblies including two magnetic and one inductive sensor assemblies.

The invention relates to the technical field of electric vehicle transmission and control, in particular to an electric vehicle speed reducer parking motor position feedback system. The system aims at solving the problems that the position feedback precision is reduced, the reliability is insufficient and the redundancy is deficient in a severe environment in the existing scheme. According to the system, through redundancy design of a main position sensing module (a magnetoelectric encoder) and an auxiliary position sensing module (an inductive sensor) and in combination with a multi-source data fusion module (based on Kalman filtering), anomaly detection and fault tolerance, position prediction and compensation and a temperature compensation and self-adaptive calibration mechanism, accurate feedback of the position of the parking motor rotor is achieved. According to the system, the accuracy and robustness of position feedback and the reliability of the system can be remarkably improved, the service life of a parking mechanism is prolonged, and the parking safety is improved.

A system may include a resistive-inductive-capacitive sensor, a driver configured to drive the resistive-inductive-capacitive sensor at a driving frequency, a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and configured to measure phase information and amplitude associated with the resistive-inductive-capacitive sensor, and a noise detection circuit communicatively coupled to the measurement circuit and configured to determine a presence of external interference in the system based on at least one of the phase information and the amplitude information.

The fire-fighting unmanned aerial vehicle comprises an unmanned aerial vehicle body, a bomb filling mechanism and a bomb dropping mechanism, the bomb filling mechanism is installed at the bottom of the unmanned aerial vehicle body and used for filling the fire-extinguishing bomb, and the bomb dropping mechanism is installed in the bomb filling mechanism and used for dropping the fire-extinguishing bomb. The bomb dropping mechanism is used for dropping the fire extinguishing bombs in the bomb filling mechanism; wherein the elastic filling mechanism comprises a columnar shell, and the columnar shell is installed at the bottom of the unmanned aerial vehicle body; the bomb filling mechanism comprises a columnar shell with at least four bomb filling holes in the bottom and is used for storing a fire extinguishing bomb body, the fire extinguishing bomb body is attracted and fixed to an electromagnet through a metal block and is prevented from falling off in flight, filling operation is simple and rapid, and after the unmanned aerial vehicle reaches a fire extinguishing position, a micro motor drives a disc to rotate, and the fire extinguishing bomb body is filled with fire extinguishing bomb. And the permanent magnet at the bottom of the disc triggers the magnetic inductive sensor to power off the corresponding electromagnet to release the fire extinguishing bomb body.

The invention relates to the technical field of disintegration time limit automatic induction, in particular to a disintegration time limit inductive sensor capable of preventing refraction interference. A disintegration time limit inductive sensor capable of preventing refraction interference comprises a tube body which is internally provided with a medicine soaking cavity; the conical screen cover corresponds to the bottom of the medicine soaking cavity, the diameter of the upper end of the conical screen cover is larger than that of the lower end of the conical screen cover, and the lower end of the conical screen cover corresponds to the center of the medicine soaking cavity and is provided with an opening; the photoelectric sensor comprises a transmitter and a receiver, the transmitter is fixed below the conical screen cover, and a transmitting port of the transmitter is right opposite to an opening in the lower end of the conical screen cover; the floating head is arranged in the medicine soaking cavity, the receiver is installed in the floating head, and the receiving end of the receiver is exposed out of the bottom of the floating head and right faces the emitting opening of the emitter. And the detection precision of the photoelectric sensor can be effectively prevented from being influenced by refraction and liquid sputtering.

The invention discloses a TWDS online wheel set detection data acquisition system and equipment, and particularly relates to the technical field of data processing, the data acquisition system comprises a position control module, an identification module, a protection module, a measurement module and a management and operation module; the position control module is used for monitoring the position of a train on a track through an inductive sensor; the identification module is used for carrying out serial number identification on the compartment and the wheel set and sending a confirmation signal to the protection module after identification is completed; after receiving the confirmation signal sent by the identification module, the protection module controls a mechanical protection device of the laser scanner and keeps the temperature stable; the measuring module is used for acquiring geometric data of a wheel set by using a laser scanner and transmitting the data to the management and operation module for processing; the management and operation module is used for analyzing a data change trend according to the scanning data and generating a measurement report; the data acquisition device comprises an inductive sensor, a laser scanner, a measuring unit, a data processing server and a communication module.

The invention relates to a method, a system, equipment and a medium for detecting the locking quantity of an external locking turnout of a railway, and belongs to the technical field of track safety detection. The method for detecting the locking quantity of the external locking turnout of the railway comprises the following steps: detecting the locking quantity of the external locking turnout through a magnetic grid and a magnetic field inductive sensor; when relative movement occurs between the magnetic railing ruler and the magnetic field inductive sensor, the magnetic field inductive sensor can collect the number of passing magnetic railings, the collected number of the magnetic railings is analyzed and processed, then the movement direction and stroke are obtained in real time, and by monitoring the locking amount of the external locking turnout, the locking accuracy of the external locking turnout is improved. Therefore, real-time monitoring of the locking amount of the two sides of each traction point of the turnout switch rail is realized. And powerful data support is provided for field maintenance personnel. The method adapts to the outdoor turnout environment, the long-term stability is good, the reliability is high, and the measurement precision can reach + / -0.1 mm.

An inductive sensor device for monitoring gap clearance of an elevator door is arranged in association with the elevator door. The inductive sensor device is configured to obtain sensor data representing the gap clearance of the elevator door being in a closed state. The inductive sensor device is further configured to: monitor the gap clearance of the elevator door based on the obtained sensor data, and / or provide the obtained sensor data to a remote monitoring entity for monitoring the gap clearance of the elevator door. A method and a monitoring system for monitoring gap clearance of an elevator door are also disclosed.

A rotary power tool includes a gear case, an output shaft, a drive mechanism, and a clutch mechanism. The clutch mechanism including a compression spring positioned around the output shaft. The rotary power tool further includes a clutch adjustment assembly having a collar disposed circumferentially around the gear case and rotatable to adjust a length of the compression spring, an inductive sensor disposed within the collar and proximate the compression spring such that a voltage is induced in the inductive sensor in response to relative movement between the compression spring and a magnetic field emitted by the inductive sensor, and an electronic control unit configured to receive an output signal from the inductive sensor indicative of the change in inductance in the inductive sensor and to determine a parameter of the clutch mechanism based on the output signal. The compression spring is disposed adjacent and offset from the inductive sensor.

The utility model discloses an electric energy meter and terminal shell automatic dust removal device which comprises a conveyor belt and a controller, the conveyor belt is driven by a motor, the electric energy meter and terminal shell to be subjected to dust removal is put in from the front section of the conveyor belt and taken out from the rear section of the conveyor belt, a dust removal station is arranged in the middle section of the conveyor belt, and an inductive sensor is arranged at the dust removal station. A vibration device is arranged at the bottom of the dust removal station, a positive pressure air purging gun and a negative pressure air dust collection gun are arranged on the two sides of the dust removal station and right opposite to the dust removal station, and the controller communicates with and controls the positive pressure air purging gun, the inductive sensor, the motor and the vibration device. According to the utility model, automatic dust removal of the shells of the electric energy meter and the terminal is realized, dust-removed air is filtered at the same time, the influence of cleaning operation on the surrounding environment and the secondary pollution to other products are greatly improved, and a great contribution is made to the improvement of the product quality.

The invention discloses a vertical double-disc rotor vibration experiment table with multiple adjustable vibration factors. Comprising an L-shaped base, a variable frequency motor, a motor support, a coupler, a rotating shaft, a bearing seat, a transverse moving device, a disc, a feather key, a sensor support, a magnetic powder brake, a magnetic powder brake support, a magnetic powder tension controller, a computer, an information collector, a signal conditioner, a frequency converter, an inductive sensor, a T-shaped sliding block and a mass block. The unbalanced mass is regulated and controlled by increasing or decreasing the number of the mass blocks on the discs, the load of the magnetic powder brake can be controlled by adjusting the magnetic powder tension controller, and the axial position of the double discs can be changed. Under the excitation of the vibration, the displacement of the disc in the X and Y directions is recorded by using an inductive sensor so as to analyze the vibration characteristics of the disc. The method is suitable for simulating rotor experiments under various vibration excitation, and aims to verify the accuracy of theoretical analysis or provide reference for reducing the vibration of actual mechanical equipment.

The utility model discloses a tray contact type redundancy in-place detection device of a bidirectional telescopic pallet fork. The tray contact type redundancy in-place detection device comprises a bottom plate, a left contact plate, a right contact plate, a spring, a pin shaft, an induction type sensor and a contact type sensor. The two ends of the left contact plate and the two ends of the right contact plate are respectively provided with two sets of concentric round holes, one set of holes of the left contact plate and one set of holes of the right contact plate are hinged together through a pin shaft, the whole bottom plate is in a U shape, the two ends of the bottom plate are provided with through kidney-shaped grooves, and the other set of round holes of the left contact plate and the other set of round holes of the right contact plate can move in notches of the bottom plate through pin shafts. And a spring is connected between the two pin shafts for connecting the left contact plate, the right contact plate and the bottom plate to ensure that the pin shafts lean against the inner sides of the two waist-shaped notches of the bottom plate when the tray is not in place. The device is installed at the two ends of the outer side of the fork teeth of the bidirectional telescopic pallet fork and adjusted to the proper height, the left contact plate and the right contact plate can move towards the bottom plate side under extrusion of the pallet, feedback of the two in-place switches is triggered, and whether the pallet is in place or not can be detected.

The invention relates, according to one aspect, to a printed circuit board 1 for an inductive sensor intended for measuring the angular position of a rotational mechanical part, the printed circuit board 1 comprising: - at least two secondary windings 3 each consisting of at least one pair of poles 4, the two secondary windings 3 forming a first arc of a circle 5; and - a primary winding 2 comprising a first portion 2a forming a second arc of a circle running along the periphery of the first arc of circle 5; - the printed circuit board 1 being characterised in that it is C-shaped and in that the primary winding 2 has a second portion 2b for electrically connecting the two ends 6a, 6b of the first portion 2a of the primary winding 2.

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.

There is provided an aerosol-generating device including: a heater configured to heat an aerosol-generating article inserted into an accommodation space of the aerosol-generating device; the sensing module comprises at least one of an inductive sensor or a temperature sensor, the inductive sensor is configured to detect the inductive change of the accommodating space, and the temperature sensor is configured to detect the temperature change of the heater; and a processor configured to: detect, via the sensing module, whether the aerosol-generating article inserted into the accommodation space is at least partially moved from the accommodation space; and controlling power supply to the heater based on detecting that the aerosol-generating article is at least partially moved from the accommodation space, based on at least one of an inductive change or a temperature change acquired via the sensing module. In addition, the invention also provides an operation method of the aerosol generating device.

The wine bottle thickness measuring instrument is composed of a main body structure and a magnetic field measuring unit, the magnetic field measuring unit comprises a magnetic field inductive sensor and a permanent magnet assembly which form a magnetic field distance measuring system, and an electric signal output by the magnetic field inductive sensor is in linear correlation with the magnetic field intensity of the environment where the magnetic field inductive sensor is located; the main control module is electrically connected with the magnetic field measurement unit, pre-stores a magnetic field intensity B and distance d calibration data set matched with the permanent magnet assembly, reads an electric signal output by the magnetic field induction sensor, converts the electric signal into an actual magnetic field intensity value, selects a reference data set based on the calibration data set, and sends the reference data set to the permanent magnet assembly; the distance between the magnetic field inductive sensor and the permanent magnet assembly is calculated through a preset algorithm, and the distance is the thickness of the bottle wall of the wine bottle. The invention provides a wine bottle thickness measuring instrument with high precision, portability and non-contact measurement, so as to promote the standardization process of the wine identification and collection industry.

The invention relates to a pedal arrangement (1) for a vehicle, comprising a movably mounted pedal plate (3) which can be actuated against a force from a spring element (15) over a small actuation travel, a circuit carrier (7) and at least one sensor arrangement (10) with an inductive sensor (10A) which is designed to detect the actuation of the pedal plate (3) and the actuation travel, wherein the inductive sensor (10A) comprises at least one transmitting structure (12) and at least one receiving structure (16) and at least one electrically conductive coupling element (14) and is designed to couple an electrical voltage to the receiving structure (16) based on an eddy current principle, starting from the transmitting structure (12) and via the electrically conductive coupling element (14).wherein the transmitting structure (12) and the receiving structure (16) are arranged on the circuit carrier (7) and a current distance (A) between the circuit carrier (7) and the electrically conductive coupling element (14) determines a degree of coupling between the transmitting structure (12) and the receiving structure (16), wherein the small actuation path of the pedal plate (3) changes the current distance (A) between the circuit carrier (7) and the electrically conductive coupling element (14) and thus a measurement signal output by the receiving structure (16).

Systems and methods for a vehicle pedal assembly and an inductive sensor assembly thereof. The inductive sensor assembly includes a rotary inductive sensor target and a printed circuit board (PCB) positioned opposite the rotary inductive sensor target. The inductive sensor assembly includes a first inductive sensor circuit defined on the PCB. The first inductive sensor circuit includes a first coil circuit including a first coil having a first electrical current in a first flow direction and a second electrical coil having a second current in a second flow direction opposite to the first flow direction. The first inductive sensor circuit is configured such that a rotation of the rotary inductive sensor target induces a change in the first electrical current and the second electrical current within the first coil and the second coil.

A power tool including a housing, a brushless direct current (DC) motor, an impact mechanism including a hammer and an anvil, an output drive device, a position sensor, and a controller. The power tool also includes a target positioned on a shaft, a magnetic shield positioned on the shaft between the target and the anvil, and a position sensor. The position sensor includes an inductive sensor, a first transmitting circuit trace, and a first receiving circuit trace. The controller is configured to calculate a drive angle based on the determined position of the anvil, and control the brushless DC motor based on the drive angle of the anvil.

A magnetic bearing assembly having a signal conditioning circuit that includes an offset generator for adding a digitally controllable analog offset to compensate for displacement error in unbalanced inductive sensors.

The invention relates to the technical field of material management, in particular to a T10 material management system and method based on an RFID reader. Comprising an RFID tag management module, an RFID reading management module, a material detection module, an inventory management module, a data storage module and a display module. According to the invention, the RFID tag management module writes data information of materials into RFID tags and establishes communication with an RFID reader in the RFID reading management module, and the inventory management module identifies the RFID tags by using the RFID reader and generates a log of the day, so that statistics of the number of products in a warehouse is realized; and a plurality of non-inductive sensors in the material detection module are used for detecting the temperature around the unfrozen product and changing the unfreezing time information in the RFID tag, so that the unfreezing time of the frozen product is adjusted in real time, the ex-warehouse speed of the product is increased, and the ex-warehouse quality of the product is ensured.

The invention discloses an anti-interference mounting structure of an inductive sensor, and aims to solve the technical problems of insufficient mounting space and limited application scene caused by high requirement on interference-free distance of peripheral metal of the conventional TURCKNI100U-K90SR-VP4X2 type inductive sensor, the structure comprises a metal protection box, an electromagnetic shielding assembly and a sensor body; the electromagnetic shielding assembly comprises two electromagnetic shielding films with the size of 25 * 10 * 0.5 mm, and the two electromagnetic shielding films are attached to the two sides of the upper portion of the sensor body respectively. The top of the metal protection box is provided with a non-transparent anti-aging plastic cover plate, one end is provided with a through hole for wire connection, the inner wall of the bottom is provided with a sensor mounting blind hole, and the outer wall is provided with an equipment fixing guide hole. The metal interference-free distance around the sensor is shortened to 18.5 mm through local electromagnetic shielding, meanwhile, it is guaranteed that the detection distance of the sensor in the vertical direction is not attenuated, sealing protection of the sensor is achieved through the protection box, the application scene of the high-detection-distance inductive sensor is remarkably expanded, and the high-detection-distance inductive sensor is particularly suitable for mechanical equipment in a narrow space.

Flexible, longitudinally extended sensors comprising variably resistive and / or inductive sensing material. Sensors connect to an external processing unit using as few as 2 wires. In operation, sensors measure resistance / inductance along their longitudinal extent (curve). Spectral de-multiplexing allows electrical property differences along sensors to be resolved. This enables shape tracking of the flexible sensor. The sensor principles are suitable for the production of ultra-small diameter probes (for example, smaller than 0.5 mm) of arbitrary length (for example, 30 cm long). There are potential advantages for cost efficiency and ease of manufacture. The sensor can be constructed as a shape tracked guidewire to enable endovascular navigation procedures. The sensor's tracked shape enables deformation tracking of the anatomy. Using the sensor's tracked shape rather than repetitive X-ray imaging improves navigational accuracy and reduces exposure to radiation.

An inductive sensor is integrated on a printed circuit board assembly (PCBA) of an electrical protective device, such that the inductive sensor is configured to contactlessly measure angular motion of an electrically conductive target mounted on the PCBA corresponding to a component of the electrical protective device. The inductive sensor comprises an integrated circuit, a transmitter coil, and receiver coils spaced apart vertically from the electrically conductive target. The integrated circuit is electrically coupled to the transmitter coil such that the integrated circuit is configured to transmit a high frequency time varying signal into the transmitter coil. The high frequency time varying signal energizes the transmitter coil thereby inducing a magnetic field. The magnetic field induces one or more output signals on the receiver coils and eddy currents in the electrically conductive target. The eddy currents produce a counter magnetic field that alters the output signals responsive to an angular displacement of the electrically conductive target.

The invention relates to the technical field of oil and gas drilling, in particular to a while-drilling azimuth electromagnetic wave nanovolt-level high-Q-value multi-frequency signal detection circuit. The invention provides a nanovolt-level high-Q-value multi-frequency signal detection pre-amplification circuit which is suitable for all while-drilling azimuth electromagnetic wave resistivity instruments and is simpler in structure. The method is suitable for solving the problem of multi-frequency-point multi-group parallel matching in antenna inductance sensor open-loop voltage signal acquisition preprocessing, and the signal-to-noise ratio of the whole acquisition circuit is effectively improved. The method is suitable for a frequency-selecting filter which has the requirement for amplitude-frequency response characteristic stability near a center frequency point in a narrow-band-pass filter. The multi-frequency signal high-dynamic-range measuring circuit can be independently used as a sensor pre-amplification circuit, a segmented program control gain circuit containing a crossing interval is adopted, the measuring dynamic range spans four orders of magnitude to reach 80dB, and multi-frequency signal high-dynamic-range measuring is achieved.

A method and device for sorting lump ore relate to the mining and processing industry, and more particularly to technology for pre-processing ores containing a valuable component that has a low concentration and low mass fraction in the rock mass which correlate with the distribution of the component, or for pre-processing ores containing minerals with low magnetic susceptibility or non-magnetic minerals. The working of the device and the method are based on a 3D electromagnetic method which utilizes two systems: a 3D scanner (1) and an inductive sensor system (3) with electromagnetic coils. The two systems operate in a consolidated manner, with the 3D scanner (1) system acting as a master system and the inductive sensor system (3) acting as a slave system. The inductive sensor system (3) is configured in the form of a matrix (6) of coils, the parameters of which are stored in a computing unit (10). The 3D scanner (1) scans lumps of ore and generates a data array which is also supplied to the computing unit (10), which processes the data array and determines the order of activation of individual sensors.