3018results about "Converting sensor output" patented technology

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.

A system, apparatus and method directed to detecting damage to an optical fiber of a medical device. The optical fiber includes one or more core fibers each including a plurality of sensors configured to (i) reflect a light signal based on received incident light, and (ii) alter the reflected light signal for use in determining a physical state of the multi-core optical fiber. The system also includes a console having non-transitory computer-readable medium storing logic that, when executed, causes operations of providing a broadband incident light signal to the multi-core optical fiber, receiving reflected light signals, receiving reflected light signals of different spectral widths of the broadband incident light by one or more of the plurality of sensors, identifying at least one unexpected spectral width or a lack of an expected spectral width, and determining the damage has occurred to the optical fiber based on the identification.

An electronic watch includes a housing, a display positioned at least partially within the housing, a cover covering at least part of the display, and a crown having a portion positioned along a side of the housing. The crown may include an inner member that is rotationally constrained relative to the housing and an outer member that is rotationally free relative to the inner member. The device may further include a rotation sensor configured to sense a rotation of the outer member relative to the inner member.

The invention belongs to the technical field of robots, and discloses a biped robot state estimation method based on multi-sensor information, and the method comprises the steps: obtaining the data of an inertial measurement unit, a joint encoder and a joint sensor on a biped robot; a self-adaptive threshold contact state detection algorithm based on current sensing information is designed, and the contact state of the sole and the environment is judged in real time; determining a supporting phase of the robot according to the contact state, and applying a dynamic reference system conversion mechanism of supporting phase perception; constructing a state estimator based on invariant extended Kalman filter IEKF, defining a state vector including the posture, position and speed of the robot, performing state prediction by using IMU data, and performing state updating in combination with contact state information, kinematics information and the like; and outputting accurately estimated robot state information. According to the method, the adaptive contact detection and the IEKF are introduced, so that the state estimation precision and robustness of the biped robot in the dynamic walking process are effectively improved.

A non-contact three-dimensional displacement sensor disclosed by the present invention comprises a mechanical probe and a detection circuit, the mechanical probe part comprises a differential fixed block and an end cross beam, and two parallel inner side surfaces of the differential fixed block are fixedly provided with a first differential coil and a second differential coil respectively. A first target conductor located under the first differential coil is fixedly arranged on the top face of the suspension end of the cross beam, and a second target conductor located over the second differential coil is fixedly arranged on the bottom face of the suspension end of the cross beam. A pair of receiving coils Lx is fixedly arranged on the top face of the first target conductor or / and the bottom face of the second target conductor in the horizontal x direction, a pair of receiving coils Ly is fixedly arranged in the horizontal y direction, and the two pairs of receiving coils form a structure shaped like a Chinese character'jing '. The non-contact three-dimensional displacement sensor provided by the invention has better quasi-static resolution and displacement sensitivity in three directions, realizes decoupling in all directions, and has excellent performance in indexes such as linearity, measuring range and the like.

A container arranged for containing a precursor material for use with a machine for preparing a beverage and / or foodstuff, the container including a machine-readable code storing preparation information for use with a preparation process performed by said machine, the code comprising a plurality of elements, wherein the elements of the code are arranged circumferentially to be read sequentially when the container is rotated about an axis of rotation relative a code reader, wherein the code is arranged as a plurality of directly adjoining discrete positions and an absence or presence of a primary element at a discrete position encodes the preparation information, wherein boundary elements are arranged at a boundary between two or more adjoining primary elements, and / or at a boundary between two or more adjoining absences of primary elements, and the boundary elements are of different reflective properties to a primary element or an absence of a primary element.

The utility model provides an encoder comprising a housing provided with a mounting cavity and a through hole which are communicated with each other; the circuit board is arranged in the mounting cavity; one end of the mounting shaft extends into the mounting cavity through the through hole; the magnetic part is arranged at one end, positioned in the mounting cavity, of the mounting shaft; the magnetic sensitive part is arranged on the side, away from the magnetic part, of the circuit board and electrically connected with the circuit board, and the magnetic sensitive part is opposite to the magnetic part in the axial direction of the mounting shaft. The magnetic sensitive part is arranged on the side, away from the magnetic part, of the circuit board, the distance between the circuit board and the magnetic part is reduced, the thickness space of the circuit board is fully utilized, and therefore the height of the encoder is reduced to the maximum extent, namely the overall axial size of the encoder is reduced, and the size of the encoder is reduced.

The invention relates to the technical field of encoder operation and maintenance management, in particular to an absolute value encoder operation error analysis method and system, which are used for more accurately identifying whether a specific source causing an error is an internal equipment problem or an external environment factor through environment external cause influence exclusion analysis; the method is applied to an encoder operation monitoring system, an error analysis instruction is generated when the encoder operation monitoring system monitors that an absolute value encoder has an error, and the method comprises the following steps: in response to the error analysis instruction, analyzing the error analysis instruction to obtain an error analysis result; obtaining an absolute value encoder address, an absolute value encoder model and an error analysis time window which need to be subjected to error analysis; configuring an error analysis test strategy based on the absolute value encoder model and the absolute value encoder address; and testing in the error analysis time window based on the error analysis test strategy, and comprehensively evaluating a test result to obtain a first error test result.

The invention belongs to the field of high-temperature sensing, and discloses a self-calibration high-temperature-resistant optical fiber temperature-vibration double-parameter sensor which comprises a packaging base, a packaging cover plate, a packaging sleeve, an optical fiber, a Bragg fiber grating and a sensitive diaphragm. The packaging cover plate is fixedly connected with the packaging base, a first diaphragm groove is formed in the top of the packaging base, a second diaphragm groove is formed in the bottom of the packaging cover plate, and the first diaphragm groove and the second diaphragm groove are oppositely arranged to form a vibration space of the sensitive diaphragm; the Bragg fiber grating is provided with a first Bragg grating and a second Bragg grating, the first Bragg grating is fixed on the packaging cover plate, and the second Bragg grating is fixedly arranged on the sensitive diaphragm; one end of the optical fiber is fixedly arranged in the central through hole and is packaged through a packaging sleeve fixed at the top of the packaging cover plate; the optical fiber end face and the sensitive diaphragm form a resonant cavity. According to the invention, temperature and vibration signals can be monitored synchronously under a high-temperature condition, self-calibration of the vibration signals is realized, and the measurement precision is improved.

A system may include a first DAS station, comprising a first plurality of interrogator units to launch a first plurality of DAS signals in a first direction, wherein a first interrogator unit is configured to launch a first DAS signal at a first interrogation rate and first wavelength, wherein a second interrogator unit is configured to launch a second DAS signal at a second wavelength and second interrogation rate, less than the first interrogation rate. The system may include a loopback array, comprising a plurality of loopbacks, arranged over a plurality of spans, wherein a first set of proximate loopbacks nearest to the first DAS station are configured to route back the first DAS signal to the first DAS station, and wherein a first set of intermediate loopbacks, located further from the first DAS station, are configured to route back the second DAS signal to the first DAS station.

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).

Novel tools and techniques are provided for implementing an encoder capable of performing a self-calibration or self-correction process, and more particularly methods, systems, and apparatuses are provided for implementing an encoder capable of performing a process to calibrate itself or correct a signal of a sensor at different detected temperatures of an environment. In various embodiments, the encoder includes an exciter and a sensor capable of detecting a position of the exciter and generating a signal based on the position of the exciter. The encoder can then perform one or more steps to calibrate itself or self-correct a signal at different temperatures and calculate one or more values to correct a signal generated by the sensor.

The invention discloses a non-cooperative target trajectory prediction method fusing camera miss distance and encoder information. According to the method, the actual track sequence of the non-cooperative target is obtained by fusing the miss distance of the camera of the optical telescope and the grating encoder information, the motion track of the tracking target in the blind area time is predicted by using a prediction algorithm, the telescope is controlled to move directly through optical feedback at the camera sampling moment, and the motion track of the tracking target in the blind area time is obtained at the encoder sampling moment. The corresponding predicted value and the encoder measurement value are subtracted to obtain the tracking error in the blind area time, and the tracking error is input into the telescope motion control system, so that the control frequency and closed-loop bandwidth of the telescope motion control system are improved, and the error between the reference trajectory and the actual trajectory of the tracking target is reduced; therefore, the tracking capability of the optical telescope on the non-cooperative target is improved.

The present invention relates to a method and a device of identifying and locating a PCCP broken wire signal, the device comprises a distributed optical cable adheres on a pipe, a high frequency subsystem connected with two cores of the cable, a low frequency subsystem connected with the third core of the cable, and a control system which is connect to the two subsystems, the device is configured to analyze abnormal vibration signal compared with the database of the broken wire signal database and determine whether a broken wire event occurs. In addition, it is also configured to analyze low frequency abnormal vibration signals through two neighbor channels to locate the wire breakage. The present invention can identify and locate the broken wire event with high accuracy.

The invention provides a signal receiving device, a signal transmitting device and an optical fiber sensing device, relates to the technical field of optical fiber sensing, and is used for solving the problems that the requirement for equipment is high when an existing optical fiber sensing device detects Rayleigh scattering and Brillouin scattering at the same time and the like. The signal receiving device comprises a coherent receiver, a radio frequency analog-to-digital conversion unit and a frequency band calculation unit, the coherent receiver is used for obtaining four electric signals with orthogonal phases according to the local oscillation light and the signal light, and the radio frequency analog-to-digital conversion unit converts the four electric signals to obtain two digital signals in a first polarization state and two digital signals in a second polarization state; the frequency band calculation unit is used for calculating the frequency spectrum of the signal light according to the two paths of digital signals of the first polarization state of the signal light and the two paths of digital signals of the second polarization state of the signal light, and the frequency spectrum comprises a phi OTDR signal located at the positive frequency and a BOTDR signal located at the negative frequency.

The invention provides a method for detecting the position of a multi-code-channel absolute encoder. The multi-code-channel absolute encoder position detection method is characterized in that an incremental signal (1), a single-period subdivision position (2), an absolute position (3) and an absolute subdivision position (4) are included, wherein the absolute position (3) is composed of a credible interval (301) and an uncertain interval (302). Firstly, an incremental signal (1) is composed of periodic AB signals detected by an encoder, then a periodic incremental subdivision phase signal phi is calculated and subdivided from the AB periodic signals, a single-period subdivision position (2) is obtained through calculation, and meanwhile, the encoder calculates an absolute position (3) of a system at the moment from an absolute code channel; a trusted interval (301) of the absolute position (3) is determined from the incremental phase signal phi, and finally an absolute subdivision position (4) is obtained after fusion correction. The method can be used for high-precision absolute position measurement, and can be widely applied to the fields of industrial automation, robot technology, aerospace, precision measurement, positioning control and the like.

The invention relates to a sensor module (50) for an actuating device (1) of a motor vehicle, comprising a plate-shaped sensor element (51), in particular one that can be assigned or is assigned to an actuating element of the actuating device (1), comprising a sensor housing (52), wherein the sensor housing (52) has at least a first cylindrical housing part (53), wherein the sensor element (51) is mounted in the first housing part (53) for longitudinal displacement, and comprising at least one force sensor element (55) assigned to the sensor element (51) for detecting a force exerted on the sensor element (51), in particular by means of the actuating element, and / or at least one displacement sensor element (56) assigned to the sensor element (51) for detecting a displacement path of the sensor element (51).

A method and a system for monitoring an optical transmission path in an optical transmission system. A signal is transmitted on a portion of the optical transmission path. The optical transmission path includes a plurality of portions. A clock synchronization signal in a plurality of clock synchronization signals is assigned to the transmitted signal. A backscattered signal is received. The backscattered signal is generated by the portion of the optical transmission path in response to the signal being transmitted on the portion of the optical transmission path. Based on the assigned clock synchronization signal, the portion of the optical transmission path is monitored by analyzing the backscattered signal to determine a presence of an interference on the portion of the optical transmission path.

The invention discloses an outer rotor permanent magnet synchronous motor encoder data correction method and device, and aims to solve the problem of poor precision of encoder position detection of an existing outer rotor permanent magnet synchronous motor. The method comprises the following steps: acquiring a current motor position and a motor position in a previous sampling period through an encoder to obtain a first position increment; estimating the current rotating speed of the motor according to the output current of the permanent magnet synchronous motor; obtaining a second position increment according to the current motor rotating speed and the sampling period; and comparing the first position increment with the second position increment to judge whether the data collected by the encoder is abnormal or not, and correcting the abnormal data. The method is simple and reliable, the requirement for the encoder installation process is low, abnormal data errors caused by encoder installation errors or noise interference can be eliminated, the accuracy of encoder detection data is effectively guaranteed, and the stability of closed-loop vector control of the permanent magnet synchronous motor is effectively improved.

An apparatus, comprising: a first transmitting coil including at least one first portion and at least one second portion, the first and second portions having different polarities; and a second transmitting coil that is disposed above or below the first transmitting coil, the second transmitting coil including at least one third portion and at least one fourth portion, the third and fourth portions having different polarities, wherein the first and second transmitting coils are configured so that, when the first transmitting coil is not driven and the second transmitting coil is driven, a net magnetic flux through at least one of the first portions is approximately zero, the net magnetic flux being a magnetic flux that is entirely attributable to the second transmitting coil.

A demodulation system for optical fiber Fabry-Perot sensor, including: a light source; a Fabry-Perot sensor; a coupler; a first optical component configured to shape interference light into a linear first interference fringe pattern; a second optical assembly configured to form a second interference fringe pattern; a first detector configured to receive a first light signal to form a first light signal curve; a second detector configured to receive a second light signal to form a second light signal curve; a data collection device configured to receive the first light signal curve from the first detector to generate a first light intensity curve, and receive the second light signal curve from the second detector to generate a second light intensity curve; and a processor configured to calculate a cavity length variation of the Fabry-Perot sensor on the basis of the first light intensity curve and the second light intensity curve.

The utility model relates to the technical field of sensors, in particular to a sensor with high pressure resistance. The sensor with the high pressure resistance comprises a shell and a core body, the shell is provided with a first mounting port and a second mounting port which are communicated with the interior of the shell, the first mounting port is used for being communicated with an outlet of a pressure container, the second mounting port is used for mounting the core body, and the first mounting port and the second mounting port are located at the two axial opposite ends of the shell respectively; wherein the inner wall of the shell is provided with an inner surface, the outer wall of the core body is provided with an outer surface, and the inner surface and the outer surface are in interference fit in a mounting state. According to the scheme, the problem that the core body is damaged due to the fact that the welding temperature is too high can be avoided, and the problem that the connecting strength of the shell and the core body is limited due to the size of a welding point can also be avoided.

A vehicle control method, a multi-purpose vehicle, and a garden work vehicle, capable of ensuring an accurate response to a manipulation intention of a user, and optimizing user experience. The multi-purpose vehicle comprises a driving mechanism, a manipulation mechanism, and an auxiliary control mechanism. The auxiliary control mechanism comprises: a manipulation state sensing assembly, used for determining a manipulation state of a user for the manipulation mechanism, the manipulation state comprising a linear manipulation state and a non-linear manipulation state; a running state sensing assembly, used for determining a running state of a multi-purpose vehicle, the running state comprising a linear running state and a non-linear running state; and a calibration controller assembly, used for determining, when the running state does not match the manipulation state, that the multi-purpose vehicle is abnormally running, wherein the calibration controller assembly is further used for adjusting an operating state of the driving mechanism after determining that the multi-purpose vehicle is abnormally running, so as to enable the running state to match the manipulation state.

The invention relates to a encoder wheel (1) for determining the rotational speed and / or the angular position of a shaft (10), in particular a rotor shaft, especially for an electric machine, or for an electric motor, particularly of a motor vehicle. The encoder wheel (1) has an encoder wheel contour (2) for determining the rotational speed and / or the angular position of the shaft (10) and a circumferential section (3) extending at least partially around the shaft for mounting and / or fastening it to the shaft (10). To prevent the encoder wheel (1) from loosening and / or rotating relative to the shaft (10), and in particular to reduce manufacturing costs, assembly effort, and / or installation space, the circumferential section (3) of the encoder wheel (1) has bulges (3a) to create an interference fit (P) of the encoder wheel (1) in or on the shaft (10).

A rotary actuator includes a housing having a first end and a second end spaced from the first end along an axis. The housing defines a cavity extending circumferentially about the axis. An output shaft is arranged coaxially with the axis. The output shaft extends outwardly from the cavity through the first end. A drive system is disposed in the cavity and axially spaced from the first end. A gearbox is disposed in the cavity between the output shaft and the drive system. The gearbox is coupled to the drive system and the output shaft. A rotational controller is disposed in the cavity between the drive system and the second end. The rotational controller is configured to actuate the drive system to adjust an angular position of the output shaft.

The invention provides a precision compensation method and device of a magnetic encoder based on linear displacement detection, and relates to the field of precision compensation of magnetic encoders, and the method comprises the steps: carrying out the equal-interval division of a total reference range of the movement of a moving part, which is determined by a reference sensor, obtaining a reference output value comprising a preset number of range calibration points and each range calibration point; obtaining a difference value corresponding to each range calibration point of the moving part; a preset algorithm is adopted to calculate the target reference output value, the first reference output value, the second reference output value, the first difference value and the second difference value of any detection point where the moving part is located, and a target error is obtained; determining a target movement output value of the magnetic encoder at the detection point based on the target error, the target reference output value and a linear relation corresponding to two adjacent range calibration points before and after the detection point; according to the method, precision compensation is carried out on the magnetic encoder, so that the moving output value in the subsequent independent application process of the magnetic encoder is more accurate.

A digital adaptive optics encoder module includes an input mounting flange, a collimating lens, a bandpass filter, digital adaptive optic elements, refocusing lens, an output mounting flange, and a housing. The input mounting flange is capable of attaching to a telescope. The collimating lens is capable of expanding light from a target to fill a plurality of primary apertures. The bandpass filter has a bandwidth ranging from about 40 nm to about 100 nm. The digital adaptive optic elements include the plurality of primary apertures, an optical spreader, a focusing optic, and a detector. The refocusing lens is capable of refocusing an output from the digital adaptive optic elements onto a sensor plane. The output mounting flange is capable of attaching to an output connection. The housing encloses all of the interior components of the digital adaptive optics encoder module.

The invention relates to a quantum dot optical encoder measurement error dynamic compensation method and system and a storage medium. The method comprises the following steps: acquiring a multi-color-gamut code channel image according to a quantum dot optical encoder; constructing a sub-pixel level compensation network model; a code channel fine feature extraction network, a causal inference network, a decision network, a sub-pixel level positioning network, a coding and decoding network and Q learning are introduced, so that a single-factor measurement error compensation agent is constructed; parallel decomposition multi-subtask model training is adopted, the output of a causal inference network is combined, and the compensation agent strategy proportion of each influence factor is calculated, so that a measurement error compensation agent under the influence of multiple factors is constructed; and measuring error dynamic compensation is completed. By adopting the method, decoupling of coupling errors of internal and external factors can be realized, and error compensation can be performed in a more targeted manner by analyzing the strategy ratio of each compensation sub-agent, so that the measurement precision is improved.