373results about "Converting sensor output electrically/magnetically" patented technology

An example assembly for detecting opening events of an item includes: a wireless communications tag. A memory of the wireless communications tag is configured to store an opening indicator. A piezoelectric element is configured to be disposed between two mating portions of a closing structure of the item. The piezoelectric element is loaded when the two portions are mated and unloaded when the two portions of the closing structure are unmated. The piezoelectric element is configured to output an electric signal that can be used by the wireless communications tag, e.g., to cause a logic circuit of the wireless communications tag to update the opening indicator when the piezoelectric element is unloaded.

The application discloses a large-flux magnetic positioning sensor and relates to the technical field of magnetic positioning sensors.The large-flux magnetic positioning sensor comprises a magnetic core and electronic wires wound on the magnetic core; the magnetic core adopts a large-diameter metal magnetic core wire treated by a key heat treatment process; and the metal magnetic core wire is provided with a magnetic core wire plating layer on the surface. The application improves the amplitude of the output alternating voltage signal of the magnetic positioning sensor, increases the magnetic flux passing through the magnetic positioning sensor, namely, increases the inductance value, thereby improving the positioning precision of the magnetic positioning sensor, meeting the requirements of small size and low power consumption of the magnetic positioning sensor, and having the characteristics of wide frequency and strong magnetic field resistance.

Apparatuses, systems, and methods are provided for a magnetic sensing device including one or more linear magnetic sensors, such as Hall sensors. In some embodiments, the magnetic sensing device includes a housing, a substantially cylindrical shield mechanically coupled to the housing, a magnet disposed within a cavity defined by the substantially cylindrical shield, wherein the magnet defines a countersunk cavity, and / or a printed circuit board assembly (PCBA) disposed proximate a first end of the magnet opposite a second end of the magnet proximate an end of the housing proximate a measured medium.

The present application relates to a gain compensation method and module and a target voltage determination method. The gain compensation method includes: acquiring angle data of the photomultiplier tube of the detector; the angle data being used for representing a relative angle between the photomultiplier tube and an environmental magnetic field; and outputting a voltage compensation signal to an adjustable power supply circuit according to the angle data; the voltage compensation signal is used for instructing the adjustable power supply circuit to adjust a supply voltage output to each photomultiplier tube, so as to cause an output amplitude of the photomultiplier tube to reach an expected output amplitude.

A wearable audio device is provided. The wearable audio device includes a first capacitive proximity sensor. The first capacitive proximity sensor is configured to generate a raw proximity signal. The wearable audio device further includes a second capacitive proximity sensor. The second capacitive proximity sensor is configured to generate a raw reference signal. The wearable audio device further includes a controller. The controller is configured to calculate a proximity threshold. The proximity threshold is calculated based on a product adjustment ratio, a bias value, and the raw reference signal. The controller is further configured to determine an on-head status. The on-head status is determined based on the raw proximity signal and the proximity threshold.

The application provides a high-pressure oil pump gear pulse sensor which is convenient to install, plug-and-play, high in phase detection precision and strong in anti-interference. The high-pressure oil pump gear pulse sensor comprises a sensor body, an adjusting gasket and an O-shaped ring. The sensor body comprises a sensing component mounting part, a body fastening mounting part and a mounting connecting plate. The body fastening mounting part is arranged beside the sensing component mounting part. The mounting connecting plate connects the sensing component mounting part and the body fastening mounting part into an integrated whole. The body fastening mounting part is provided with a mounting positioning hole. The sensing component mounting part comprises a lower convex sensing part and an upper convex wiring part. A wiring PIN needle group is arranged in the inner cavity of the wiring part.

The application relates to a self-adaptive self-powered flexible sensing device based on triboelectricity and a preparation method thereof, which comprises a flexible device, a charging module and a single-chip circuit board; the flexible device comprises, from top to bottom, a triboelectric layer, an insulating layer, a potential layer and a battery layer; the triboelectric layer is connected with the charging module, the charging module is connected with the battery layer, and the battery layer is connected with the single-chip circuit board. The system collects signals of multiple electrode ports through a single-chip microcomputer and transmits the signals to a mobile phone or a computer terminal through Bluetooth wireless transmission, so that the convenience and expansibility of data acquisition are improved, and real-time monitoring and remote interaction application can be constructed.

The invention relates to an inductive position sensor device (5) for detecting the position of a coupling element, which can be arranged on a movable actuator element of an electric machine (2), having at least one transmitter coil (8, 8') for generating electromagnetic waves, at least one receiver coil (9, 9') for detecting electromagnetic waves generated by the transmitter coil (8) and influenced by the actuator element, and a computing unit (11) for operating the transmitter coil (8) and evaluating the electromagnetic waves detected by the receiver coil (9, 9') in order to determine the position, the coils (8, 9) being arranged on the front side of a common circuit board (6) and the computing unit (11) being arranged on the back side, the coils (8, 8', 9, 9') and the computing unit (11) being electrically connected by connection lines (12, 13) which extend along the circuit board (6) and through the circuit board (6). It is provided that the connection lines (12, 13) are essentially parallel to one another.

To provide a rotary modulated wave resolver significantly improving detection accuracy of a displacement amount of a turning angle, etc., by suppressing third and fifth harmonics included in a detection signal.SOLUTION: A rotary modulated wave resolver comprises a detection coil having a coil pattern including S types of segments with different arrangement relations of Δλ: when S is the number of types of segments and λ is a coil pattern pitch, including a reference segment having an arrangement of Δλ=0, and S-1 types of segments respectively displaced in a rotational direction of S-1 types of different Δλ rotational axes excluding Δλ=0 with respect to the reference segment. The S types of Δλ are determined by the following expressions: Δλ=λ×[a / 3×n+b / 5×n'], where S=n×n', λ is a basic pitch of the coil pattern, n and n' are integers of 2 or more, (a) is an integer of 0 or more and n-1 or less (0≤a≤n-1), b is an integer of 0 or more, and n'-1 or less (0≤b≤n'-1).SELECTED DRAWING: Figure 7

The motion detection device (5) includes a first support (51), a second support (52) that moves relative to the first support, a power generation sensor (100) disposed on the first support, and a magnetic field generating source (400) supported on the second support. The power generation sensor includes a magnetic wire (110), a coil (120), and a magnetic flux conducting plate (130, 131). The magnetic flux conducting plate includes an axially orthogonal portion and an axially parallel portion, and has a wire arrangement portion that fixes the axially orthogonal portion and both ends of the magnetic wire. The power generation sensor is configured such that the side opposite to the magnetic wire is set as the detection area (140) relative to the axially parallel portion. The magnetic field generating source has multiple magnetic poles. Magnetic poles of different polarities enter the detection area sequentially along a track (30) parallel to the axis of the magnetic wire and are opposite to the power generation sensor. The magnetic flux direction of each magnetic pole is perpendicular to its direction of movement and is the direction that intersects with the magnetic wire.

A displacement detection device (1), comprising a first sensor (11) and a second sensor (2). The first sensor (11) comprises a plurality of first units (111) and a second unit (112). The plurality of first units (111) are arranged in a first direction, the sum of the lengths of two adjacent first units (111) in the first direction being one pole pitch. The second unit (112) is capable of moving in the first direction relative to the plurality of first units (111), thereby determining the position of the second unit (112) within two adjacent first units (111). The second sensor (2) is configured to determine the number of pole pitches included in the movement distance of the second unit (112). The accuracy of displacement detection results can be ensured. The present application further relates to a control method for the displacement detection device (1), an electric motor (10) comprising the displacement detection device (1), and a vehicle (1000) comprising the electric motor (10).

A magnetic holder (100) for holding a magnet (202) of a magnetic sensor arrangement (200), wherein the magnetic holder (100) comprises a fastening part (20) for attaching the magnetic holder (100) to a first component (2) and a contact part (40) for providing contact with a second component (4) comprising a magnetic field-sensitive element (204) of the magnetic sensor arrangement (200), wherein the contact part (40) is configured to touch and guide the second component (4) during a relative movement of the second component (4) with respect to the first component (2), characterized in that the magnetic holder (100) comprises a flexible strut arrangement (30) connecting the fastening part (20) and the contact part (40), wherein the flexible strut arrangement (30) is configured to prevent compression of the magnetic holder (100) in a confined state (C) of the magnetic holder (100).to cushion the impact in which the magnetic holder (100) is wedged between the first component (2) and the second component (4).

The utility model discloses an angle displacement sensor, include: upper end cover, pivot, rotor core, have stator core of winding, bearing and shell, the pivot is rotatablely connected with shell through bearing, the open end of shell is closed through upper end cover, the center of upper end cover is equipped with the through -hole of the pivot wear, the inside of shell is connected with stator core, the rotor core is set up in the pivot outside, with stator core position corresponds, the convex pole magnetoresistance surface central angle of rotor core is 180 DEG. Increase the range of angle displacement sensor.

The invention relates to a device for performing an examination of an object by means of X-ray radiation, wherein the device has a functional element which is movably arranged in a radiation region in a movement direction and a position sensor, the functional element having an electrically and / or magnetically conductive region, wherein the position sensor is an electric coil assembly for detecting the conductive region and for providing an overall voltage depending on the detection of the conductive region, wherein the coil assembly has an excitation coil for providing an alternating magnetic field and two series-connected detection coils for detecting at least a portion of the alternating magnetic field, wherein the detection coils and the excitation coil are arranged such that the overall voltage over the two detection coils is dependent on the position of the functional element relative to the position sensor, wherein the device is configured to derive a position signal dependent on the position of the functional element relative to the position sensor from the overall voltage.

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 invention relates to an inductive rotor position sensor device (5) for capturing a rotor angular position of a rotor (4) of an electrical machine (2), having a transmitter coil (8) for generating electromagnetic waves and a receiver coil (9) for capturing the electromagnetic waves which are generated by the transmitter coil (8) and are influenced by the rotor (4), and having a computing unit (11) which is designed to control the transmitter coil (8) and to evaluate the electromagnetic waves captured by the receiver coil (9) in order to determine the rotor angular position, wherein the coils (8, 9) and the computing unit (11) are arranged on a common printed circuit board (6). Provision is made for the coils (8, 9) to be arranged on a front side (7) of the printed circuit board (6) and for the computing unit (11) to be arranged on a rear side (10) of the printed circuit board (6) facing away from the front side (7).

The utility model relates to the field of encoder discloses a capacitive encoder and electronic equipment. The utility model discloses capacitive encoder includes: pivot, emitter plate, receiving plate, support between the emitter plate and receiving plate and the metal spare of setting on the support, and the metal spare includes: first metal sheet, second metal sheet and the connecting piece of connecting first metal sheet and second metal sheet, the first surface of support facing emitter plate is provided with first metal sheet, the second surface of support facing receiving plate is provided with second metal sheet, and the area of first metal sheet is greater than the area of second metal sheet. The signal amount on the emitter plate is received to improve, and the detection sensitivity of capacitive structure is further improved. In the pivot rotation process, the facing area between second metal sheet and at least one receiving plate changes, the rotation angle of pivot is determined according to the signal change condition on multiple receiving plates, and the low -cost detection of rotation angle is realized.

The application discloses a temperature-strain dual-function sensor for extracorporeal circulation system monitoring, and relates to the technical field of flexible electronics and biomedical engineering. The sensor adopts a three-layer stacking structure, and comprises, from top to bottom, a piezoresistive strain response layer based on a silver / graphene / poly(3,4-ethylenedioxythiophene):polystyrene sulfonate composite conductive film, a thermoplastic polyurethane nanofiber heat insulation isolation layer and a temperature sensitive layer based on a graphene / poly(3,4-ethylenedioxythiophene):polystyrene sulfonate composite conductive hydrogel. The temperature-strain dual-function sensor for extracorporeal circulation system monitoring prepared by the application exhibits high sensitivity and fast response characteristics in temperature and strain sensing, and simultaneously exhibits excellent cycle stability and long-term reliability under repeated deformation.

A measuring instrument includes a main body, a probe movable with relative to the main body, a movable member provided to move with the probe, a scale member fixed to a part of the movable member, and a detection member that electrically detects a displacement of the scale member, wherein the movable member and the scale member are fixed to each other by bonding with an adhesive in the bonding region, and in the bonding region, at least one of the movable member or the scale member includes a through hole into which the adhesive enters.

The application provides a kind of track car high temperature melt discharge intelligent acquisition system and method for titanium sponge production, it is related to titanium sponge smelting technical field, in the bottom of track car installation magnetic encoder and in the installation magnetic code label of still steaming stove entrance, form magnetic code positioning module, realize the positioning of track car and still steaming stove, install pressure sensor in inverted U type furnace reactor, for detecting pressure change in high temperature melt discharge process after positioning is completed, and generate trigger signal, the trigger signal includes initial acquisition signal and end acquisition signal, weighing module is used to collect the initial weight of ladle when receiving initial acquisition signal, collect the end weight of ladle when receiving end acquisition signal, data processing unit obtains high temperature melt discharge weight by calculating the difference between end weight and initial weight of ladle, solve the problem that existing high temperature melt discharge acquisition is not intelligent and low accuracy, the application is suitable for titanium sponge production.

This application discloses a precision capacitance sensing system, comprising a modulation signal source, a sensitive probe, a differential transformer bridge, a signal amplification link, an analog multiplier, and a low-pass filter circuit, all connected in sequence. It also includes a demodulation reference signal source, the output of which is connected to the second input of the analog multiplier. The demodulation reference signal source is used to generate a multi-frequency combination demodulation reference signal, which is composed of a fundamental frequency component and at least two harmonic components superimposed. This invention also discloses a precision capacitance sensing method. By employing a specially designed demodulation reference signal, this application ensures that the system output remains constant within a continuously varying range of the demodulation phase difference, thereby achieving complete insensitivity to phase difference fluctuations and effectively overcoming the performance bottleneck that has long constrained high-precision capacitance sensing.

This invention relates to a signal transmitter for a spatially distributed multi-parameter electrostatic sensor, comprising a first signal preprocessing circuit, a second signal preprocessing circuit, and a signal processing circuit. The first signal preprocessing circuit performs standard signal preprocessing and is used to multiplex signals from multiple sensors. The second signal preprocessing circuit includes N first signal amplification circuits, a signal superposition circuit, and a second signal amplification circuit. The first signal amplification circuits amplify the signals from each sensor, the signal superposition circuits superimpose the signals from multiple sensors, and the second signal amplification circuits amplify the superimposed signal. By using two different signal preprocessing processes, the appropriate preprocessing process can be selected according to different sensor signals, enabling reliable signal preprocessing.

A foot presence sensor system for an active article of footwear can include a sensor housing configured to be disposed at or in an insole of the article, and a controller circuit, disposed within the sensor housing, configured to trigger one or more automated functions of the footwear based on a foot presence indication. In an example, the sensor system includes a capacitive sensor configured to sense changes in a capacitance signal in response to proximity of a body. A dielectric member can be provided between the capacitive sensor and the body to enhance an output signal from the sensor.

A motor drive controller for driving a brushless direct current motor includes a motor drive unit; a magnetic sensor for detecting a magnetic field generated by rotation of the motor and outputting the magnetic field as each of magnetic signals; and a bias adjuster for adjusting and outputting a bias voltage used in magnetic field detection by the magnetic sensor. The bias adjuster adjusts the bias voltage to a second voltage value lower than a first voltage value that allows the magnetic sensor to detect the magnetic field in a first period after a phase change of the magnetic signals. The bias adjuster also adjusts the bias voltage to a first voltage value in a second period from an end of the first period until a subsequent phase change of the magnetic signals.

The application relates to a proportional valve spool control and position detection system, method, device and medium. The system comprises a main control unit, an excitation driving unit, a phase detection unit, a feedback signal processing unit, an amplitude detection unit and an LVDT sensor. The proportional valve spool is located between the excitation end of the LVDT sensor and the feedback end of the LVDT sensor, and the sensor excitation end is connected with the excitation driving unit, and the sensor feedback end is connected with the feedback signal processing unit. The system takes the output frequency excitation signal as a reference, detects the phase difference between the frequency excitation signal and the valve spool position feedback signal, can quickly judge the position of the valve spool and control the movement direction of the valve spool based on the phase difference and the type of the LVDT sensor, and can quickly and accurately obtain the opening value of the valve spool by detecting the amplitude of the position feedback signal. Based on the system, the proportional valve spool position detection and movement direction control can be realized quickly, simply, accurately and at low cost.

The present invention relates to a rotational angle detection system (1, 1´, 1´´, 1´´´) for detecting a rotational angle of a rotary brake drive (10) for a rail vehicle, comprising: at least one sensor unit (20, 21) for detecting a rotational angle, which sensor unit can be operatively connected to the rotary brake drive (10); and at least one main electronics path for transmitting control signals and / or sensor signals, wherein the at least one main electronics path can be operatively connected to the at least one sensor unit (20, 21), the at least one main electronics path comprises at least one signal transmitter (51, 52, 53, 54) which subdivides the main electronics path into a main electronics path section which is close to the sensor unit (20, 21), viewed from the signal transmitter (51, 52, 53, 54), and a main electronics path section which is remote from the sensor unit (20, 21), viewed from the signal transmitter (51, 52, 53, 54), and the at least one signal transmitter (51, 52, 53, 54) is designed to electrically isolate the at least one sensor unit (20, 21) from the main electronics path section which is remote from the sensor unit (20, 21).

To determine abnormality of a resolver / digital conversion part in an angle detection device using a phase modulation type resolver, without complicating a circuit configuration and handling of a signal line.SOLUTION: An angle detection device for detecting a rotation angle θ of a phase modulation type resolver 10 includes: a reference signal generation part 120 for generating a reference signal; a resolver / digital conversion part 110 for processing a resolver signal output from the resolver 10, thereby generating a detection angle φ according to a rotation angle θ of the resolver 10, and generating phase output having a shift of a phase corresponding to the rotation angle θ with respect to the reference signal; an excitation part 130 for generating a two-phase excitation signal according to the phase output, and supplying the excitation signal to an excitation winding of the resolver 10; and an abnormality monitoring part 140 for comparing the phase of the reference signal with the phase of the resolver signal, and determining that the resolver / digital conversion part 110 is abnormal when a phase difference exceeds a threshold.SELECTED DRAWING: Figure 1

A rotation measurement of a rotor of an electric motor is achieved in a more efficient manner by no longer adhering to an offline calibration concept which comes along with additional overhead before shipment and additional problems to cope with in case of using, for instance, multi-pole-pair motors. Rather, rotation measurement of a rotor of an electric motor using magnetic field sensors statically arranged around the rotor for measuring magnetic fields generated by magnetic poles of the rotor so that sensor signals of the magnetic field sensors change at borders between sectors into which a full rotation of the rotor is partitioned may be achieved in a manner which lends itself for an online calibration by making use of a sequence of time durations between consecutive changes of the magnetic field sensors' output signals: a current average revolution time duration of the rotor may be determined based on a sum of M recent time durations of the sequence of time durations, wherein M ≥ N and N is the number of sectors.

A rotation angle detection device comprises a magnet attached to one of a first member and a second member that is rotatably supported by the first member, and a magnetic sensor attached to the other of the first member and the second member. The first member has a first rotation axis extending in the Z-direction, and the second member has a second rotation axis that is parallel to the first rotation axis. The second member rotates about the first rotation axis in a first angle interval and rotates about the second rotation axis in a second angle interval that is contiguous with the first angle interval. The magnetic sensor detects the direction of the magnetic field in a plane orthogonal to the Z-direction. The magnetic sensor is spaced away from the center of the magnet in the Z-direction.

The invention relates to magnetic measuring instruments that measure the proximity of a target and its orientation relative to the probe. The probe includes a scalar magnetic field sensor (9) positioned in the magnetic field of a permanent magnet (7). To reduce errors in estimating the target's proximity caused by its orientation, the probe additionally includes a directional magnetic field sensor (10), also positioned in the magnetic field of the permanent magnet (7). Conductive wires are connected to the thin films (2, 3) of the sensors (9, 10), and a current source (11) is connected so that its current flows through the thin films of both sensors, forming a series circuit. Voltage measurement devices are also connected to measure the voltage across the entire circuit and across the individual sensors (9, 10). Based on these measured values, a data processing unit (13) determines the target's (14) distance and orientation relative to the probe.