852results about "Converting sensor output" patented technology

An angular displacement sensor based on electric field modulation. The sensor comprises a stator base (1) and a rotor base (2) which are arranged one above the other. One or more pole-pair units are provided on the side surface of the stator base (1) facing the rotor base (2), each pole-pair unit comprises at least three sensing electrode groups which are arranged at intervals circumferentially around the center of the stator base (1), and each sensing electrode group comprises one excitation electrode (1-1) and one sensing electrode (1-2) which are spaced apart circumferentially around the center of the stator base (1); and modulation unit groups, the number of which matches that of pole-pair units and which can respectively correspond to the pole-pair units circumferentially around the center of the rotor base (2) are provided on the side surface of the rotor base (2) facing the stator base (1), each modulation unit group comprises one modulation unit F (2-1) and one modulation unit G (2-2) which are arranged circumferentially around the center of the rotor base (2), and the modulation unit F (2-1) can correspond to at least one sensing electrode group in the pole-pair units circumferentially around the center of the rotor base (2).

The present disclosure relates to a system (100) for acoustically detecting a temperature change, the system (100) comprising: at least one conversion element (10) for converting a temperature change into a characteristic sound; an acoustic sensor (40) configured to be mechanically connected to the structure (50) at a distance from the at least one conversion element (10); and a processor (42, 62) coupled to the acoustic sensor (40), in which the at least one conversion element (10) comprises an actuation portion (20) having at least one material having thermal expansion properties such that a change in temperature causes a movement of the actuation portion (20) that causes the conversion element (10) to generate a characteristic sound and conduct the characteristic sound into the structure (50), the acoustic sensor (40) is configured to record a characteristic sound generated by the conversion element (10) as a structural sound propagating through the structure (50), and the processor (42, 62) is configured to detect a temperature change based on the characteristic sound recorded by the acoustic sensor (40).

A linear displacement sensor based on electric field self-coupling, comprising a moving scale base (1) and a fixed scale base (2). One or more paired electrode units are provided on the side surface of the moving scale base (1) facing the fixed scale base (2); each paired electrode unit comprises at least three sensing electrode groups spaced in the length direction of the moving scale base (1); each sensing electrode group comprises one excitation electrode (1-1) and one sensing electrode (1-2) spaced in the length direction of the moving scale base (1). A plurality of modulation unit groups arranged in the length direction of the fixed scale base (2) are provided on the side surface of the fixed scale base (2) facing the moving scale base (1); in the length direction of the fixed scale base (2), all the paired electrode units on the moving scale base (1) can respectively correspond to the same number of adjacent modulation unit groups on the fixed scale base (2); each modulation unit group comprises one modulation unit F(2-1) and one modulation unit G(2-2); the modulation unit F(2-1) can correspond to at least one sensing electrode group in the paired electrode units in the length direction of the fixed scale base (2).

The invention provides an incremental photoelectric encoder alignment detection and calibration system based on a phase relation. The system is characterized in that the system is composed of a light source (1), a code disc (2), an incremental photoelectric encoder chip (3) and a signal processing and calibration system (4), wherein the incremental photoelectric encoder chip (3) is composed of a photoelectric signal acquisition module (31), an incremental signal generation module (32), a zero signal generation module (33), a phase analysis module (34), an alignment state determination module (35) and a feedback compensation module (36). By analyzing the phase relation between the zero signal and the increment signal, the alignment deviation and direction of the encoder and the code disc are judged, digital compensation is executed on the zero signal or the increment signal, automatic alignment detection and self-adaptive calibration are achieved, and therefore assembly errors and position errors caused by optical deviation are reduced, and the precision of the encoder is improved. And the precision, the stability and the reliability of the encoder system are improved.

There is provided a phase shifter circuit of an optical encoder. The phase shifter circuit receives a first signal, a second signal, a third signal and a fourth signal sequentially having a 90-degree phase shift, and includes a first cascaded resistor string, a second cascaded resistor string, a third cascaded resistor string and a fourth cascaded resistor string. The first, second, third and fourth cascaded resistor strings respectively delay the first, third, second and fourth signals by selecting a switch connected at a tap-out node of the first, second, third and fourth cascaded resistor strings to correct phase deviations between incremental signals and an index signal and / or between incremental signals.

A system for inductive energy transmission may include a stationary induction charging device, a mobile induction charging device, and a positioning device configured to detect a relative position of respective charging coils of the charging devices during charging. The positioning device may include a transmitting device and a receiving device that are each arranged in a respective one of the charging devices. The transmitting device may include at least two transmitters that simultaneously emit a respective transmission signal with an associated predetermined frequency. The receiving device may include a receiver configured to output a superimposition of all received transmission signals as a time-dependent received signal. The positioning device may be configured to i) determine an associated amplitude for each transmission signal from the time-dependent received signal and / or ii) provide a position information item from the determined amplitudes. The position information item may represent the relative position of the coils.

The invention provides a harmonic error compensation method and circuit of a magnetic encoder. The circuit comprises a plurality of harmonic error compensation channels and a compensation module. Each harmonic error compensation channel receives an angle signal theta with harmonic noise and generates a harmonic error compensation signal based on the angle signal theta with harmonic noise, and the harmonic error compensation signal generated by the mth harmonic error compensation channel is akm * sin (km * theta) + bkm * cos (km * theta); and the compensation module is configured to add the harmonic error compensation signal generated by each harmonic error compensation channel and the angle signal theta with the harmonic noise to obtain a compensated angle signal theta *. Therefore, real-time harmonic error compensation is realized in hardware through the estimated compensation coefficient of the harmonic, the angle measurement precision is improved, and meanwhile, hardware resources are saved.

The invention relates to the technical field of encoders, and discloses a system and a method for recording and recovering a power failure position of a virtual multi-turn absolute value encoder. The system comprises: a virtual multi-turn absolute value encoder; the nonvolatile storage module is used for storing a multi-circle real-time record and a multi-circle actual numerical value of the recovery algorithm module at each power-off moment; the multi-turn real-time recording and recovery algorithm module comprises an initialization compensation unit and a real-time calculation recording unit, and the initialization compensation unit is used for reading the multi-turn actual numerical value of the multi-turn real-time recording and recovery algorithm module at the last power-off moment from the nonvolatile storage module in the power-on initialization stage and calculating the real-time calculation recording unit according to the multi-turn actual numerical value of the multi-turn real-time recording and recovery algorithm module. The real-time calculating and recording unit is used for calculating a multi-circle actual value at the current moment and a multi-circle position actual value at the current moment according to the multi-circle compensation value; and feeding back the actual value of the multi-circle position at the current moment to the external equipment and recording the actual value of the multi-circle position at the current moment into the nonvolatile storage module.

Embodiments described herein are directed to a position sensor that includes a first receiver coil electrically coupled to a first multiplier to generate a first output, a second receiver coil electrically coupled to a second multiplier to generate a second output, a transmitter coil electrically coupled to an oscillator, the oscillator electrically coupled to a third multiplier to generate a third output, a phase-locked loop electrically coupled to the oscillator and the transmitter coil, a summing circuit configured to receive the first output and the second output and configured to generate a signal, a phase detector configured to receive the signal and the third output, the phase detector outputting a sense signal that is indicative of an angle of the motor position sensor, and a pair of op amps electrically coupled to the phase detector. The op amps configured to output an analog differential signal and a differential phase signal.

The magnetic sensor and optical sensor can be easily positioned so that their respective design positions are correct for the magnet and optical disc, respectively. [Solution] The rotation detection device 1 comprises a substrate 2 having an insertion hole 10 for a rotating shaft 100, a magnetic field forming member 3 that rotates with the rotating shaft 100, a plurality of magnetic sensors 20 arranged around the magnetic field forming member 3, a casing 22 provided on the substrate 2 that houses the plurality of magnetic sensors 20, an optical sensor 6 provided on the substrate 2 on the opposite side from the plurality of magnetic sensors 20, and an optical disk 5 positioned opposite the substrate 2 with the optical sensor 6 in between, which rotates with the rotating shaft 100. The device has an adjustment mechanism that allows the position of the plurality of magnetic sensors 20 relative to the magnetic field forming member 3 to be adjusted by adjusting the position of the casing 22 relative to the substrate 2 while the substrate 2 is positioned by adjusting the position of the optical sensor 6 relative to the optical disk 5.

The embodiment of the present specification provides a position recognition method and system, wherein the position recognition method is applied to a position recognition system, the system comprises a power supply rail provided with positioning mark information and an electronic price tag installed on the power supply rail, and the electronic price tag is provided with a photoelectric tube pair, wherein the electronic price tag reads the positioning mark information on the corresponding power supply rail based on the photoelectric tube pair, and determines the target position of the power supply rail according to the positioning mark information. By determining the target position of the electronic price tag on the power supply rail according to the positioning mark information of the electronic price tag on the power supply rail, the self-positioning capability of the electronic price tag is realized at low cost, and the positioning accuracy can be ensured.

The invention relates to a rotation sensor (4) for a steering system (1) of a motor vehicle, comprising a magnet element (41) which can be mounted on a steering shaft (10) and which can be rotated about an axis (L), and two stator elements (42a, 42b) which are fixedly arranged coaxially with respect to the magnet element and are axially spaced apart from each other, the stator elements (42a, 42b) are operatively connected to at least one sensor element (6) via two flux conductors (5a, 5b), the flux conductors (5a, 5b) each having a converging section (51a, 51b) connected to the stator elements (42a, 42b), a coupling section (58a, 58b) connected to the converging section and a compensation section (52a, 52b), and the sensor element (6) is arranged between the two coupling sections (58a, 58b) which are axially opposite one another. In order to be able to achieve an optimized construction and to reduce the production effort, the invention proposes that the compensation sections (52a, 52b) of the two flux conductors (5a, 5b) are arranged in the axial direction without overlapping.

To detect a position of a movable part with a resolution finer than before.SOLUTION: A position sensor includes: a bridge circuit 1 that is a sensor circuit including a magneto resistance effect element; a magnet 11 that linearly moves on a plane 9 crossing a sensor plane 6 on which a thin film resistor pattern of the magneto resistance effect element is formed; a sensor output detection unit 21 that detects output of the bridge circuit 1; an angle calculation unit 22 that calculates an angle of a magnetic field generated by the magnet 11 on the basis of the output of the bridge circuit 1; and a position calculation unit 23 that calculates coordinates of the magnet 11 on the basis of the angle of the magnetic field.SELECTED DRAWING: Figure 6

The utility model discloses a code disc for a reflective encoder, which relates to the technical field of encoder equipment and comprises a glass code disc, a low-reflection film is fixedly connected to the surface of the glass code disc, and a high-reflection film is fixedly connected to one side, far away from the glass code disc, of the low-reflection film. The low-reflection film is formed by plating acid-resistant alkali metal and metal oxide through a vacuum coating machine, the acid-resistant alkali metal comprises niobium, molybdenum, tantalum and hafnium, one of the niobium, the molybdenum, the tantalum and the hafnium is short for H, the metal oxide comprises sio2, sio, al2o3 and zro2, one of the sio, the al2o3 and the zro2 is short for L, and the plating sequence of the acid-resistant alkali metal and the metal oxide is LHLHLHLHLHL, and after the thickness of each layer of the acid-resistant alkali metal and the metal oxide is optimized, the thickness range is 10-150nm, so that the problems that the performance of a traditional material cannot reach an ideal level and the overall effect and the accuracy of equipment are reduced when the traditional glass code disc is in a working environment under high-intensity light or in a scene requiring high reflectivity are solved.

An apparatus for measuring movement of a test specimen, where the apparatus includes an electromagnetic transducer and an optical probe. The apparatus may include a test specimen holder and a body that move together. The optical probe may be configured to direct an optical beam through the body to the test specimen, which may provide for measurement of a prompt impulse. The electromagnetic transducer may be configured to produce a voltage when the test specimen holder and the body move, which may provide for measurement of a total impulse of the same test specimen. Thus, a single gauge may provide for measuring both prompt impulse and total impulse of the same test specimen.

This invention provides a magnetic sensor that is cost-effective and highly sensitive. The magnetic sensor (1) of this invention comprises: a magnetic field detection element (2); and a plurality of magnets (3A-3C) arranged separately from each other in a first direction (X) and movable relative to the magnetic field detection element (2) in the first direction (X). The plurality of magnets (3A-3C) have a first surface (6A-6C) opposite to the magnetic field detection element (2), and the plurality of magnets (3A-3C) are magnetized such that the first surfaces (6A-6C) of two adjacent magnets (3A-3C) have different polarities in a second direction (Y) intersecting the first direction (X). The magnetic sensor (1) further comprises: at least one soft magnetic body (4A-4C) disposed on the first surface (6A-6C) of at least one magnet (3A-3C).

A vehicle assembly is disclosed comprising a vehicle member and a speed measuring arrangement for measuring a rotational speed of the vehicle member. The speed measuring arrangement comprises a set of elements arranged at a portion of the vehicle member and being configured to rotate in a first plane upon rotation of the vehicle member. The speed measuring arrangement further comprises a speed sensor unit comprising an end section facing the portion of the vehicle member from a first side of the first plane. The speed sensor unit comprises a Hall sensor arranged at the end section. The present disclosure further relates to a transmission unit comprising a vehicle assembly and a vehicle.

The invention discloses a self-adaptive acquisition and simulation device and method for an incremental circular grating encoder, and belongs to the technical field of encoder data acquisition. The technical problem to be solved is that a follow-up information processing system is difficult, and the universality is poor. According to the key points of the technical scheme, the system comprises an incremental encoder, an encoder acquisition and simulation device, a motor controller and an upper computer, and the incremental encoder is used for generating an A signal, a B signal and a Z signal and inputting the A signal, the B signal and the Z signal into the encoder acquisition and simulation device; the encoder acquisition and simulation device is respectively communicated with the motor controller and the upper computer; the encoder acquisition and simulation device comprises a simulation incremental encoder, the simulation incremental encoder and the incremental encoder are arranged in parallel, and one of the simulation incremental encoder and the incremental encoder is selected for use.

A measurement device has: a slider which holds a substrate and is movable parallel to the XY plane; a drive system that drives the slider; a position measurement system which emits beams from a head section to a measurement surface in which grating section are provided on the slider, which receives respective return beams of the beams from the measurement surface, and which is capable of measuring position information in at least directions of three degrees of freedom including the absolute position coordinates of the slider; a mark detection system that detects a mark on the substrate; and a controller which detects the marks on the substrate using the mark detection system while controlling the drive of the slider, and which obtains the absolute position coordinates of each mark based on the detection result of each mark and measurement information by the position measurement system at the time of detection.

The invention discloses a multi-antipode magnetic encoder measuring system with a programmable number of pole pairs, which comprises a shell, an electrical interface connector, a signal adapter plate, a magnetic signal generating element, a magnetic signal sensing element, a signal processing plate and a magnetic signal generating element positioning seat, and is characterized in that the electrical interface connector is connected with the signal adapter plate through a signal pin of the electrical interface connector; the signal adapter plate is connected with the signal processing plate through a signal pin, the signal processing plate is fixedly connected to the shell, the magnetic signal sensing element is connected to the signal processing plate in a welded mode, the magnetic signal sensing element and the magnetic signal generating element are parallel and opposite, the centers are aligned, and a fixed air gap is kept. When the magnetic signal generating element and the magnetic signal generating element positioning seat rotate along with a rotating mechanism of a client, an antipode magnetic signal is generated near a space where the magnetic signal sensing element is located, and the signal processing board realizes a multi-antipode digital output signal through a software algorithm.

The application relates to the field of encoder control methods, in particular to a control method of a pull rope displacement sensor, which comprises the following steps: before control starts, an encoder automatically identifies an environment and requirements through a built-in intelligent algorithm, and optimal parameters are configured; in operation, signals are dynamically enhanced and intelligently filtered and optimized to eliminate noise; internal and external data are fused in real time, and a motion trend is predicted by using machine learning; a self-learning algorithm continuously optimizes encoding correction and adapts to environmental changes; based on data prediction, encoding instructions are intelligently generated and verified; according to real-time feedback, a control strategy is dynamically adjusted to realize adaptive optimization and adapt to changing working environments and task requirements.

The invention relates to the technical field of sensors and precision measurement, and discloses an accurate matching method and system for data of an SMR chip of an encoder and a non-magnetic coded disc, and the method and system are characterized in that a special magnetic calibration pattern is integrated on a non-magnetic coded disc body, and the pattern is automatically driven to pass through the SMR sensing chip when the system is powered on, so that the non-magnetic coded disc is accurately matched with the SMR sensing chip. Bias, gain and phase error parameters are synchronously collected and calculated at a time, and the parameters are directly written into a programmable gain amplifier and a phase compensation register in the SMR sensing chip, so that front-end hardware-level real-time compensation carried out from a signal source is realized, and a closed-loop self-calibration system without external calibration is formed.

A rotary transformer is disclosed herein comprising a stationary portion and a rotating portion. The stationary portion includes a transformer housing, a primary coil positioned within the transformer housing and defining a central axis, and a stationary printed circuit board (PCB). The stationary PCB includes an excitation coil of an inductive position sensor and at least one sensing coil of the inductive position sensor. The rotating portion of the rotary transformer includes a rotating PCB with a secondary coil of the rotary transformer positioned on the rotating PCB. The rotating portion further includes a diode holder connected to the rotating PCB. The diode holder includes at least one target for the inductive position sensor.

The utility model discloses an encoder with a wiring protection structure, comprising a mounting seat, one side surface of the mounting seat is provided with an encoder body, the other side of the encoder body is provided with a connecting seat, the left side of the mounting seat is provided with a cavity, the cavity is internally provided with a buffer ring, and the buffer ring is provided with a wiring protection structure. A first buffering groove and a second buffering groove are formed in the two opposite surfaces of the buffering ring correspondingly, a containing groove is formed in one side face of the buffering ring, a plurality of hollow pipes are arranged in the cavity at equal intervals, sliding pipes are slidably connected into the hollow pipes, and first springs are arranged on the bottom surfaces of the inner walls of the hollow pipes. The inserting block is inserted into the clamping groove, one end of the inserting block abuts against the inclined face of the limiting block when the inserting block is inserted into the clamping groove, and the limiting block is stressed to retract into the movable groove and extrudes the second spring through the push plate; and the second spring rebounds, so that the limiting block is clamped into the limiting groove to finish mounting.

A reflective optical unit (1) according to the present disclosure includes a substrate (40) and a light-emitting element (10) and light-receiving element (30) located on the substrate (40). The difference between a first height (H1) of a first surface (S1) of the light-emitting element (10) relative to the substrate (40), the first surface (S1) facing away from the substrate (40), and a second height (H2) of a second surface (S2) of the light-receiving element (30) relative to the substrate (40), the second surface (S2) facing away from the substrate (40), is equal to or less than the thickness of the light-emitting element (10), and the light-emitting element (10) has a thin film shape. The reflective optical unit (1) is capable of reducing signal variations.

Multipoint contact detection device (1), comprising: - At least two capacitive or inductive sensitive structures (20), associated with respective primary detection zones of a surface that a person is likely to contact, these sensitive structures being positioned with a sufficiently small gap between them to define at least one intermediate detection zone that the person is likely to contact while exerting a capacitive or inductive disturbance on the adjacent sensitive structures, - a processing circuit (3) configured to detect for each sensitive structure (20) a disturbance induced by the person coming near or into contact with it and to locate the region or regions of the surface with which the person comes into contact relative to the primary and intermediate detection zone(s).

A system 20 for monitoring a tubular structure 22 having a length, comprising: a sensor module array 32 having a plurality of sensor modules 34 configured to sense one or more parameters relating to 2

A mounting includes rotating the rotor and acquiring an amount of eccentricity, an eccentric direction, an amount of tilt, and a direction of tilt of the rotor with respect to a device rotation axis, an amount of eccentricity, an eccentric direction, an amount of tilt, and a direction of tilt of the stator with respect to the device rotation axis, based on the detection value detected by the detection head provided on the stator, moving the stator with respect to the device rotation axis so that the amount of eccentric of the stator is within the allowable range, and moving the stator so that the distance between the stator and the rotor at a position where the rotor is attached to the device body, and the amount of tilt and the direction of tilt with respect to the device rotation axis are within the allowable range.

An optical encoder and detector system is disclosed, comprising a lateral photodiode configured to receive monochromatic light and a linear variable optical filter positioned in the optical path between the light source and the photodiode. The system enables precise detection of the optical wavelength of the incident light, with embodiments utilizing multi-lane lateral photodiodes to improve wavelength resolution and detection speed. The encoder may include a cooling element, such as a thermoelectric cooler, to reduce noise and enhance measurement accuracy. Additional embodiments provide reference diodes for further accuracy and support both front side and backside illumination. The system can also detect the position, including angular position, of a moveable light source using current differences between anodes of the photodiode. These features allow for high-resolution, high-bandwidth, and robust optical wavelength and position detection across a range of applications.