Abstract: A drive circuit for driving an electronically commutated motor contains a DC voltage intermediate circuit, and an inverter which is connected to the latter and has a bridge circuit containing a plurality of transistors, to which the motor phases of a motor configuration containing the motor can be connected. For detecting an insulation fault in the motor configuration, a positive or negative transistor of the inverter is switched on, while all other transistors of the inverter are switched off before all transistors of the inverter are switched off. A motor phase voltage of a selected motor phase of the motor phases with respect to a reference potential is then captured, while all transistors of the inverter remain switched off in order to determine whether there is an insulation fault on the motor phase on a basis of a voltage profile of the motor phase voltage.

Abstract: A charging system includes a charger, a battery charged by receiving a power of a first voltage from the charger, a multi-charge configured to boost a power of a second voltage lower than the first voltage to the first voltage and supply the boosted power to the battery, a charge relay connected at a position between the battery and the charger and configured to be switched to be in an ON state when the power of the first voltage is supplied from the charger and to be in an OFF state when the power of the second voltage is supplied from the charger, and a charging controller configured to control, based on whether a melting fault of the charge relay occurs, whether to supply the power of the first voltage to the battery through the charge relay or to supply the battery with the power through the multi-charge device.

Abstract: Disclosed is an alternating electric field based plane 2D time-grating displacement sensor which includes two parts: the base of fixed ruler and the base of moving ruler, and the two parts are installed in parallel. The base of fixed ruler is arranged with square excitation electrodes that are respectively staggered coded along axis X and Y, and the base of moving ruler is arranged with induction electrodes arranged adjacently along X-axis and Y-axis, and the four induction groups respectively output four traveling wave signals through electric field coupling, and summation of adjacent output signals with an adder can simultaneously decouple two traveling wave signals with opposite phases and only containing X-axis displacement and two traveling wave signals with opposite phases and only containing Y-axis displacement; two traveling wave signals in either direction are differenced by a subtractor to eliminate common mode interference.

Abstract: A measuring system and an associated measuring method for measuring a stator of a gearless wind power installation, wherein the measuring system has an air gap measuring unit and a position determination unit, wherein the air gap measuring unit has a holding apparatus and a distance sensor, wherein the holding apparatus is set up to mount the air gap measuring unit on a rotor of the wind power installation, wherein the distance sensor is set up to provide a signal which is indicative of an extent of an air gap between the stator and the rotor, wherein the position determination unit is set up to be mounted on the rotor of the wind power installation and to capture the signal from the distance sensor during a rotation of the rotor at a plurality of revolution positions. The measuring system and the associated measuring method make it possible to measure a stator in a simplified manner.

Abstract: Systems, methods, and computer program products for sinusoidal nulling are provided. Aspects include transmitting, by a controller, an excitation signal to a first sensor, determining, by the controller, a target harmonic based at least on one or more characteristics of the excitation signal, receiving a return signal from the first sensor, sampling the return signal at a first sample rate based on the target harmonic, and adjusting a phase of the sampled return signal to null the target harmonic amplitude to form an adjusted return signal.

Abstract: A sensor assembly includes a connecting bar extending along a longitudinal axis and a tubular body extending along the longitudinal axis and at least partially surrounding the connecting bar such that the tubular body is radially spaced from the connecting bar. The tubular body includes a first skirt portion, a first plurality of cantilevered tabs extending from the first skirt portion in a first direction parallel to the longitudinal axis, a second skirt portion, and a second plurality of cantilevered tabs extending from the second skirt portion in a second direction opposite the first direction.

Abstract: A subsea structure detection device includes a plurality of supply electrode pairs each including a positive electrode and a negative electrode, a plurality of potential difference detectors each arranged between the positive electrode and the negative electrode and configured to detect a potential difference between the positive electrode and the negative electrode due to a supplied current, and a controller configured to perform control to determine a position of a structure based on changes in detection signals detected by the plurality of potential difference detectors caused by the structure.

Abstract: The present disclosure relates to a measurement system for testing a device under test over-the-air, the measurement system comprising a signal generation and/or analysis equipment, several antennas, several reflectors and a test location for the device under test. The antennas are connected with the signal generation and/or analysis equipment in a signal-transmitting manner. Each of the antennas is configured to transmit and/or receive an electromagnetic signal so that a beam path is provided between the respective antenna and the test location. The electromagnetic signal is reflected by the respective reflector so that the electromagnetic signal corresponds to a planar wave. Each antenna aims at a focal point of the corresponding reflector. Each antenna and the corresponding reflector together are configured to provide a corresponding quiet zone at the test location.

Abstract: An object is to respectively excite transmission coils with different voltages using a single power supply with low power consumption in an electromagnetic induction type encoder. A detection head of an encoder includes a voltage adjustment circuit and a plurality of excitation circuits. The excitation circuit includes a resonant circuit that includes a driving capacitor and a transmission coil connected in series and generates an alternate-current magnetic field inducing currents in scale coils disposed in a plurality of scale tracks on a scale by connecting both ends of the resonant circuit in a state in which the driving capacitor is charged. The voltage adjustment circuit includes a first transformer capacitor and controls a charging voltage of the driving capacitor in a single excitation circuit using the charged first transformer capacitor.

Abstract: A testing device may include a stage associated with holding an emitter wafer during testing of an emitter. The stage may be arranged such that light emitted by the emitter passes through the stage. The testing device may include a heat sink arranged such that the light emitted by the emitter during the testing is emitted in a direction away from the heat sink, and such that a first surface of the heat sink is near a surface of the emitter wafer during the testing but does not contact the surface of the emitter wafer. The testing device may include a probe card, associated with performing the testing of the emitter, that is arranged over a second surface of the heat sink such that, during the testing of the emitter, a probe of the probe card contacts a probe pad for the emitter through an opening in the heat sink.

Abstract: A method for detecting a target using a metal detector, including: transmitting a transmit magnetic field using a transmitter; receiving a receive magnetic field due to the transmit magnetic field to produce a receive signal using a receiver and receive electronics; processing the receive signal using at least one function to produce an indicator output, wherein the at least one function is controllable such that the properties of the indicator output is controllable in terms of: (a) an amount of cancellation of signals due to soil; wherein the amount of cancellation of signals due to soil is higher than an amount of cancellation of signals due to the target; and (b) a sensitivity of the indicator output to the target and broadband electromagnetic interference (EMI); wherein controlling the at least one function in a particular direction changes the at least one function from a first state more suitable for high ground response environments to a second state more suitable for medium ground response environmen

Abstract: A system and method for detecting biofluid is disclosed, specifically utilizing a signaling element and a reader, wherein the signaling element comprises a sensing element, an impedance measuring circuit, an oscillator circuit, an acoustic transducer, and a power supply source, while the reader device comprises a microphone and a processor.

Abstract: A magnetic position sensor may include a coil arrangement, a magnetic coupling element, and a test element movable along a measurement path. The coil arrangement may include at least one transmitter coil and at least one receiver coil. The at least one transmitter coil may provide an alternating magnetic field. A magnetic flux provided via the at least one transmitter coil may at least partly pass through the at least one receiver coil. The magnetic coupling element may be configured to at least one of amplify the magnetic flux and at least partly guide the magnetic flux to the at least one receiver coil. The test element may provide a magnetic field large enough to locally magnetically saturate the magnetic coupling element. The magnetic coupling element may include at least one of a high-resistance material that is magnetizable, and a magnetizable material and a material with a specific electrical resistance.

Abstract: The present invention provides a clamper and a lighting fixture. An elastic layer for contacting a panel is disposed on a rotatable clamping portion. In addition to that, a distance from a lowest point of one end of the panel clamped by the rotatable clamping portion to a carrier plate supporting a polarizer at one side of the panel adjacent to a thin film transistor is greater than a thickness of the polarizer. Accordingly, the present invention prevents the panel and the polarizer at one side of the panel adjacent to the thin film transistor from being damaged from clamping.

Abstract: A method of installing a stroke sensor that enables the stroke sensor to be adjusted in a simple process is provided. The method has the steps of: arranging a second magnet, relative to the magnetic field detecting element, at a physically determinable first reference position and obtaining an indicator value S1; attaching the first magnet and the magnetic field detecting element to structures different from each other, respectively, and positioning the first magnet, relative to the magnetic field detecting element, at a physically determinable second reference position, and obtaining an indicator value S2, wherein the second reference position corresponds to the first reference position; calculating ?S=S1?S2, wherein ?S is a difference between the indicator value S1 and the indicator value S2; and modifying a process in the processor such that a sum of the indicator value S and ?S is outputted.

Abstract: A display device including a first substrate including a display area and a non-display area, a circuit film connected to the first substrate, a printed circuit board (PCB) connected to the circuit film, and a first inspection pad, a second inspection pad, and a third inspection pad located in the non-display area and a bridge configured to electrically connect the first inspection pad, the second inspection pad, and the third inspection pad. The circuit film includes a first line electrically connected to the first inspection pad, a second line electrically connected to the second inspection pad, a third line electrically connected to the third inspection pad, and a branch point configured to branch at least one line from the first line, the second line, and the third line into two sub-lines. The PCB includes a test pad unit connected to the first line, the second line, and the third line.

Abstract: A system and method for monitoring analog front-end (AFE) circuitry of an inductive position sensor. A redundant AFE channel is provided and alternatively utilized with a sine AFE channel or a cosine AFE channel of the AFE circuitry to obtain a voltage difference that may result in a detection angle error at the electronic control unit (ECU) of the inductive position sensor.

Abstract: An electromagnetic induction type coordinate positioning apparatus includes a first induction coil, a second induction coil, a first amplification circuit, a second amplification circuit, and a control circuit. The first induction coil and the second induction coil respectively generate a first induction signal and a second induction signal when a pointer device comes close. The first amplification circuit and the second amplification circuit may be electrically connected to the first induction coil and the second induction coil, to receive the first induction signal and the second induction signal. The control circuit controls the first amplification circuit and the second amplification circuit to amplify the first induction signal and the second induction signal, so that a power level of the amplified first induction signal and a power level of the amplified second induction signal reach a first predefined level and a second predefined level.

Abstract: The present invention relates to a magnetoresistive sensor for measuring a magnetic field. A calculation of the sensitivity to external magnetic fields is provided, and it is shown to be related to the shape anisotropy of the magnetoresistive sensing elements. Moreover, it is shown that sensitivity may be made highest when the shape of the magnetoresistive element is long parallel to the sensing axis, and a magnetic bias field strong enough to saturate the magnetoresistive element's magnetization, Hcross, is applied perpendicular to the sensing axis. A monolithic permanent magnet is provided to generate the Hcross and it may be applied at an angle in order to counteract non-ideal fields along the sense axis direction. The high sensitivity magnetoresistive element can be used in many electrical form-factors. Six exemplary bridge configurations are described herein.

Abstract: A semiconductor die including a crack stop structure, at least one edge seal structure and a selector circuit is provided. The crack stop structure is located in a periphery region of the semiconductor die. The crack stop structure is biased by a first voltage. The edge seal structure is located between the crack stop structure and an integrated circuit region of the semiconductor die. The edge seal structure is biased by the first voltage in a normal mode and is biased by a second voltage different from the first voltage in a test mode. The selector circuit receives the first voltage, the second voltage and a control signal for placing the semiconductor die in the normal mode or the test mode, and selects and outputs one of the first voltage and the second voltage to the edge seal structure according to the control signal.