Abstract: A rotation angle detection device includes at least one target rotating in unison with a shaft, a rotating member for rotating at a different rotation speed from the shaft as the shaft rotates, a first sensor whose output signal changes when the target is approached, a second sensor that detects the rotation angle of the rotating member within one rotation, and a computing section that calculates the absolute angle of the shaft based on the output signal of the first sensor and the rotation angle of the rotating member detected by the second sensor. The output signal of the first sensor changes at a period different from the rotation period of the rotating member when the shaft rotates, and the computing section detects the absolute angle of the shaft at that time from the rotation angle of the rotating member when the output signal of the first sensor changes.

Abstract: An arrangement has a sensor pair and a magnet mounted to move relative thereto. Magnetic flux density per spatial coordinate per sensor is measured. A non-differential alteration of position of the magnet per the measured magnetic flux density is calculated. Differences of the measured magnetic flux densities per spatial coordinate are calculated. A differentially calculated alteration of position of the magnet from the calculated magnetic flux densities is calculated. Non-differentially and differentially calculated alterations of position of the magnet based on a null position thereof are normalised. Differences of the differentially calculated alteration of position of the magnet and the non-differentially calculated alterations of position thereof are calculated. A weighting factor based on the calculated differences is calculated.

Abstract: The present application relates to a detection circuit for power load and a method for detection thereof. The detection circuit comprises a sensing circuit and a signal generation circuit. The signal generation circuit includes a calibration circuit. The sensing circuit senses an output power signal of a power supply unit for obtaining a sensing impedance. Thereby, a corresponding power sensing signal is generated according to the sensing impedance and the output power signal. The signal generation circuit generates a power ratio signal. The calibration circuit generates a calibrating signal according to the power ratio signal for driving the signal generation circuit to perform feedback control for generating the power ratio signal. The power ratio signal will match the load condition and be applied to provide the output power signal with less error.

Abstract: A device may perform impedance spectroscopy on a component under test. The frequency response analyzer circuitry may be coupled to the component under test outside of a current loop supplying an operational current to the component under test. The frequency response analyzer circuitry may drive a variable impedance circuit to generate an oscillating current component within the current loop. The frequency response analyzer circuitry may monitor a frequency response of the component under test to the oscillating current component.

Abstract: To improve the measurement accuracy of feedback capacitance of a semiconductor device. Between a gate terminal of a semiconductor device subject to measurement and an Lc terminal of an LCR meter, a first wiring that is passed through a core of a transformer once and connected between a gate terminal and a source terminal and a second wiring wound N times around a core of the transformer, and one end is connected to the Lc terminal and the other end is grounded are provided. when ? represents an angular frequency of the AC signal applied to the drain terminal of the semiconductor device, LS_6A represents inductance of the first wiring, LS_6B represents inductance of the second wiring, and CGS represents gate-source parasitic capacitance of the semiconductor device, a relationship of ?LS_6A<1/(?CGS), and ?LS_6B/N2<1/(?CGS) are satisfied.

Abstract: A method for maintaining a tube heat exchanger includes: obtaining measurement signals resulting from the passage of a measurement probe in the tubes of the heat exchanger, determining a reference time series corresponding to an average, at each instant, of the measurement signals, synchronising each measurement signal with the reference time series by applying a dynamic time warping, DTW, to said measurement signal and the reference time series, and searching for a potential anomaly by measuring a potential local deviation of a measurement signal with respect to the other measurement signals.

Abstract: Provided is an estimation apparatus for estimating a position and an attitude of a second portion with respect to a first portion in an apparatus including the first portion, the second portion, a movable mechanism which changes at least one of the position or the attitude of the second portion with respect to the first portion, at least one magnetic sensor provided in one of the first portion or the second portion, and a magnet section which is provided in another of the first portion or the second portion and which provides a magnetic field measured by the at least one magnetic sensor. The estimation apparatus includes an update unit which updates the reference information indicating a combination of measured values based on a correlation of measured values of the at least two components in the at least one direction measured by the at least one magnetic sensor.

Abstract: A mechatronic system comprises an electric actuator for driving a mechanical member, and drive electronics for controlling the actuator associated with a position sensor including at least one magnetosensitive probe including a programmable digital switch delivering an electrical signal dependent on the angular position of the mechanical member. The drive electronics comprise a microcontroller having at least one wake-up mode corresponding to the activation of the microcontroller only by a programmable wake-up circuit. The position sensor comprises a programmable wake-up circuit delivering a signal to a bus in the event of the mobile member moving. One of the microcontrollers controls, upon activation by a wake-up signal transmitted by the programmable digital switch: initialization of the access control register for controlling access to the EEPROM memory, writing of a digital datum to an EEDATA register of the EEPROM memory, and switching to rest mode at the end of a predetermined period.

Abstract: A device for the magnetic-field-based determination of rotational and/or tilting movements, including a permanent magnet which is rotatable on both sides about a rotation axis and is tiltable on both sides along a tilting axis extending orthogonally to the rotation axis, two magnetic field sensors which are each configured to measure magnetic vector fields in at least two dimensions, namely at least parallel to the rotation axis and parallel to the tilting axis of the permanent magnet, wherein the magnetic field sensors are arranged on a common substrate and are arranged next to one another along a straight line parallel to the rotation axis of the permanent magnet, and wherein the magnetic field sensors are spaced apart from the outer surface of the permanent magnet.

Abstract: A magnetic position sensor comprises at least one magnetically sensitive element capable of moving relative to a permanent magnet producing a magnetic field, the magnet of which is embedded in a support made of soft ferromagnetic material having two pole shoes located on either side of the magnet.

Abstract: A magnetic field speed sensor includes one or more magnetic field sensing elements to generate a magnetic field signal indicative of a magnetic field associated with a moveable target and a controller to generate a controller output signal including a plurality of output words, each including a speed pulse and a plurality of data pulses capable of having four different amplitudes. The time between the speed pulses of consecutive output words is indicative of the speed of movement of the target. Each data pulse corresponds to a data bit having a binary value represented by a transition direction of the data pulse and the amplitude of the data pulse. Features include a programmable data pulse width or an adaptively adjustable data pulse width to avoid truncation.

Abstract: A DC electrical meter (62) includes or is connected to a current sensor (1). The current sensor includes a busbar connector (2) including a first part (3) connected to a third part (4) via a second part (5). The second part (5) includes a main body (6) integrally formed with first (7a) and second (7b) connecting members, each having a proximal end (8a, 8b) where it meets the main body (6) and a distal end (9a, 9b) electrically coupled to a respective conductive element (10a, 10b) supported on a substrate (11) and coupled to circuitry (12) configured to measure a voltage therebetween. When a first temperature difference (?T1) exists between the respective proximal ends (8a, 8b) of the first (7a) and second (7b) connecting members, a second temperature difference (?T2) between the respective distal ends (9a, 9b) is less than or equal to 50% of the first temperature difference (?T1).

Abstract: A semiconductor module inspection device of the present disclosure includes a PCB substrate, an IC socket that accommodates a semiconductor module disposed on a first main surface of the PCB substrate, a first temperature control device disposed in contact with an upper surface of the IC socket, and a second temperature control device disposed in contact with a second main surface of the PCB substrate. In an embodiment, the first temperature control device and the second temperature control device have a Peltier element and a heat dissipation fin. In an embodiment, the semiconductor module inspection device further includes a chamber structure including a chamber upper portion connected to the heat dissipation surface of the first temperature control device, a chamber lower portion connected to the heat dissipation surface of the second temperature control device, and a purge mechanism for purging the chamber internal space with dried air.

Abstract: An apparatus comprises a support structure, one or more oscillator coils, a first sense coil, and a second sense coil. The one or more oscillator coils have a circular winding pattern around an axis of rotation for a target. The first sense coil has a coil winding pattern arranged around the axis and surrounded by the circular winding pattern of the one or more oscillator coils. The second sense coil has a coil winding pattern arranged around the axis and surrounded by the circular winding pattern of the one or more oscillator coils. The coil winding pattern of the second sense coil offset from the coil winding pattern of the first sense coil by an angle of substantially ? degrees, where ?=60°/N, and N is an integer number of pole pairs of the apparatus.

Abstract: A magnetic sensor system includes a toothed wheel configured to rotate about a rotation axis that extends in an axial direction, wherein the toothed wheel includes a plurality of teeth and a plurality of notches arranged that define a circumferential perimeter, wherein the toothed wheel further includes an interior cavity arranged within the circumferential perimeter; a front-bias magnet arranged within the interior cavity of the toothed wheel, wherein the front-bias magnet is rotationally fixed and is magnetized with a magnetization direction that extends along a radial axis of the toothed wheel; and a magnetic sensor arranged exterior to the toothed wheel, wherein the magnetic sensor includes a sensor element arranged on the radial axis that coincides with the magnetization direction of the front-bias magnet and the first sensor element is sensitive to a magnetic field of the front-bias magnet that is aligned with the radial axis.

Abstract: In one aspect, an angle sensor includes a first linear sensor and a second linear sensor. A first magnetic-field direction of a target magnet measured by the first linear sensor is substantially equal to a second magnetic-field direction of the target magnet measured by the second linear sensor. The first linear sensor, the second linear sensor and the target magnet are on an axis. The angle sensor determines an angle of a magnetic field.

Abstract: A system includes a controller, a magnetic field sensor, and a signal conditioning circuit. The magnetic field sensor is configured to sense a position of a motor and provide an output signal. The signal conditioning circuit is configured to produce an AC-coupled output signal from the output signal. The AC-coupled output signal is an input to the controller. The controller is configured to process the AC-coupled output signal.

Abstract: The present subject matter relates to devices, systems, and methods for identifying the position of a movable component. A position sensor system is provided in which a Hall effect sensor is coupled to a fixed housing, and a plurality of magnets is coupled to a movable component that is movable to a sensing position at which the plurality of magnets is proximal to the Hall effect sensor. In this configuration, the plurality of magnets is arranged to produce an aggregate magnetic field having a flux concentration directed toward the Hall effect sensor when the plurality of magnets is in the sensing position.

Abstract: A method of determining an orientation of a magnet which is pivotable about a reference position having a predefined position relative to a silicon substrate, includes: providing a silicon substrate; determining a first/second magnetic field gradient along a first/second direction; determining a first/second angle based on said first/second magnetic field gradient and a first/second correction value. A sensor device configured for performing this method. A sensor system includes such sensor device and a magnet, optionally connected to a joystick.

Abstract: A multiport current sensor is disclosed for measuring current. The sensor may include multiple CT or Rogowski coil segments or sections arranged in a closed loop configuration around a monitored phase line or other electrical conductor. An adjacent phase rejection circuit compares the magnitudes and/or phase angles of the voltage signals from the multiple coil segments. The adjacent phase rejection circuit may detect if a fault in an adjacent phase line or other electrical conductor is affecting the output signal of the current sensor by more than a threshold amount. The adjacent phase rejection circuit may additionally or alternatively indicate whether the measured values are valid for detecting a fault on the monitored phase line or other electrical conductor.