Abstract: In one embodiment, a sensor circuit may include a first receiver circuit that may be configured to receive a first signal that is representative of a first mutual inductance and form a first detection signal that is representative of the first mutual inductance, wherein the first variable mutual inductance varies in response to a position of a metal object. An embodiment may include a second receiver circuit configured to receive a second signal that is representative of a second mutual inductance and form a second detection signal that is representative of the second mutual inductance, wherein the second mutual inductance varies in response to the position of the metal object. In an embodiment, the sensor circuit may include a recognition circuit configured to assert a movement detected signal responsively to a first value of the first detection signal, configured to assert a movement direction signal responsively to a first value of the second detection signal.

Abstract: A phase control device includes a connection error detection unit. The connection error detection unit includes a phase sequence detection unit that detects a phase sequence of voltage signals, a phase sequence detection unit that detects a phase sequence of current signals, a collation unit that collates the phase sequence of the voltage signals and the phase sequence of the current signals and determines that a connection error is present when the phase sequences are different, phase difference detection units that detect a phase difference between the voltage signal and the current signal, and a phase difference determination unit that determines, when the phase differences output from the phase difference detection units fall without a determination range, that a connection error is present.

Abstract: A circuit arrangement (1) for controlling an inductive displacement measurement sensor (2) is described. The displacement measurement sensor has a sensor coil (2), which is supplemented by means of a capacitor (Cpar) to form an oscillating circuit. In addition, the circuit arrangement has an oscillator (3) for generating an excitation signal (UExciter), which excites the oscillating circuit to oscillate. The excitation signal (UExciter) is superimposed with a DC voltage (Utemp), the amplitude of which changes when the temperature of the sensor coil (2) changes. The sensor coil (2) is connected to a controllable resistor (Rvar). Furthermore, the circuit arrangement (1) has a comparator (4), which compares the DC voltage (Utemp) with a reference voltage (Utref). On the basis of the result of the comparison, the comparator (4) outputs a control voltage (Ur), which controls the controllable resistor (Rvar).

Abstract: A rotation sensor has a magnetoelectric conversion unit that converts change of magnetic flux whose direction changes periodically with rotation of a rotator into an electric signal and a processing unit that processes the electric signal. The magnetoelectric conversion unit outputs a first detection signal and a second detection signal. The processing unit has a first comparison unit that compares a detection threshold and the first detection signal and a second comparison unit that compares a reference threshold and the second detection signal. The first comparison unit changes a voltage level of the detection threshold when the first detection signal exceeds or falls below the detection threshold and then restores the voltage level of the detection threshold based on the second detection signal and the reference threshold, and the first comparison unit converts the first detection signal into a pulse signal based on the detection threshold of the same voltage level.

Abstract: A sensor system can be configured to perform dielectric spectroscopy (DS). For example, the system can include a sensor configured to measure dielectric permittivity of a fluid in response to an RF input signal. Associated interface electronics can include a transmitter to drive the sensor with the RF input signal and a receiver to receive and process an RF output signal from the sensor in response to the RF input signal.

Abstract: A test socket is provided that includes a base material including an insulating elastic material and a conductive portion extending through the base material in a thickness direction of the base material, wherein the conductive portion includes a plurality of conductive particle structures arranged in the thickness direction of the base material, and each of the plurality of conductive particle structures includes a plurality of conductive particles having at least one insulating wire and/or at least one conductive wire extending from a surface of the conductive particle, bonded with a material having a functional group.

Abstract: Devices and methods for measuring an electrical characteristic, in particular, for measuring current are provided. The devices can use a pair of MEMS optical modulators as opposed to the more conventional coil and associated oil insulation arrangement.

Abstract: A method of open-switch fault detection in a two-level voltage source power converter comprises the steps of: i. acquiring the waveforms of three-phase alternating current of the two-level voltage source power converter; ii. calculating at least a first time derivative of each acquired waveform; and iii. using the at least first time derivatives to determine whether an open-switch fault is present in the two-level voltage source power converter.

Abstract: A device for discovering, identification and monitoring, of mechanical flaws in metallic structures is disclosed, based on magneto-graphic/magnetic tomography technique to identify stress-related defects. The device can determine the position of the defect or stress including depth information. The device includes registration means that optimized for use with metallic structures of various types, shapes, and sizes. Applications include a real-time quality control, monitoring and emergency alarms, as well structural repairs and maintenance work recommendations and planning. Examples of the device implementation include pipes for oil and gas industry monitoring, detection of flaws in roiled products in metallurgical industry, welding quality of heavy duty equipment such as ships, reservoirs, bridges, etc. It is especially important for loaded constructions, such as pressured pipes, infrastructure maintenance, nuclear power plant monitoring, bridges, corrosion prevention and environment protection.

Abstract: Embodiments of the invention is based on a device for testing electronic components with at least one test socket with test contacts, with a nest, in which at least one electronic component can be placed, and with at least one cleaning unit for the test contacts of the test socket, wherein by means of a relative movement, which can be carried out as a test stroke, between the test socket and nest the electronic component can be pressed against, and lifted from, the test contacts of the test socket. According to embodiments of the invention the at least one cleaning unit is designed in such a manner that during each test stroke the test contacts come into contact with the at least one cleaning unit.

Abstract: A power detector measures RF power delivered into a first load of uncertain impedance. A reference power meter measures power of a reference signal to a second load of known impedance. The reference power meter measures voltage across the second load; measures a current through the second load; and multiplies the measured voltage by the measured current to generate a reference power signal proportional to power delivered to the second load. A measurement power meter measures power of a signal to the first load. The measurement power meter measures voltage across the first load; measures current through the first load; and multiplies the measured voltage by the measured current to generate a measured power signal proportional to power delivered to the first load. The power detector includes a processor to calculate power delivered to the second load, and to generate a power delivered to the first load.

Abstract: To provide a voltage detection circuit in which the influence on a detection voltage by semiconductor manufacturing variations is small and which is small in current consumption. A voltage detection circuit is provided which detects a voltage, based on an output signal of a detection circuit and outputs a detection signal. The detection circuit includes a first MOS transistor unit which allows a first current to flow, a second MOS transistor unit which allows a second current to flow, and a current voltage conversion unit which converts each of the first current and the second current into a voltage and outputs the same as the detection signal. A voltage characteristic of the first current and a voltage characteristic of the second current are configured so as to be crossed with each other at a predetermined voltage.

Abstract: A method of initializing a meter reading device that communicates a current meter value of a meter to a central metering facility includes capturing, by a camera, an optical image of the meter that displays meter information and determining an initial meter value from the meter information in the optical image of the meter. The method further includes initializing the meter reading device using the initial meter value.

Abstract: Electrical connection device comprising at least one substrate and one or several first electrical connection elements located on a front face of the electrical connection device such that they can be coupled to contact pads of an electronic device to which the electrical connection device is intended to be connected, each first electrical connection element comprising: at least one support, of which at least one first end is anchored to the substrate such that part of the support is suspended above the front face, the support comprising at least a portion of piezoelectric material located between two electrodes and capable of moving said part of the support in two directions approximately perpendicular to the front face depending on a value of an electrical voltage intended to be applied onto the electrodes; at least one electrical conducting element located on said part of the support.

Abstract: The present invention discloses a testing method for dynamic model parameters of a wind power plant, wherein under testing conditions including stable running of wind turbine generators and reactive-load compensation equipment, stable wind speed between a cut-in wind speed and a rated wind speed, and the wind power plant output smaller than a rated output, finishes a wind speed transient disturbance test, a wind power plant unit tripping and inputting disturbance test, a wind power plant power change test, a disturbance test for reactive-load compensation equipment of the wind power plant, a tripping disturbance test for hydroelectric power plant and thermal power plant near the wind power plant and a manual single-phase ground short circuit test at the outgoing line part of the wind power plant, and records running curves of the wind power plant under each condition to finish the parameter test.

Abstract: Provided is an optical coordinate measuring device with improved measurement efficiency. A holding part of a measurement head includes an installation part and a stand part. The installation part has a horizontal flat shape and is installed on the installation surface. The stand part is provided so as to extend upward from one end of the installation part. The placement table is provided at the other end of the installation part. A measurement target is placed on the placement table. A main imaging unit is provided on an upper part of the stand part. The main imaging unit is arranged so as to be turned obliquely downward such that it can capture an image of a previously set imaging region above the placement table.

Abstract: A measurement device for determining an angular position, having a magnet device and a sensor device that are rotatable relative to one another. The magnet device has a first north pole face of a first magnetic north pole and a first south pole face of a first magnetic south pole. The magnet device has a second north pole face of a second magnetic north pole and a second south pole face of a second magnetic south pole. The sensor device is located in a region between the first north pole face and the first south pole face and between the second north pole face and the second south pole face. The sensor device has a first magnetic field sensor and a second magnetic field sensor. The first magnetic field sensor and the second magnetic field sensor are spaced apart from one another for ascertaining a magnetic field difference.

Abstract: Methods and systems are provided for adjusting a rate of change in a reference voltage of an oxygen sensor. In one example, a method may include gradually increasing a reference voltage of an oxygen sensor from a lower first voltage to a higher second voltage at a ramp rate. The ramp rate may be based on engine operating conditions.

Abstract: Through-silicon via (TSV) crack sensors for detecting TSV cracks in three-dimensional (3D) integrated circuits (ICs) (3DICs), and related methods and systems are disclosed. In one aspect, a TSV crack sensor circuit is provided in which doped rings for a plurality of TSVs are interconnected in parallel such that all interconnected TSV doped rings may be tested at the same time by providing a single current into the contacts of the interconnected doped rings. In another aspect, a TSV crack sensor circuit is provided including one or more redundant TSVs. Each doped ring for a corresponding TSV is tested independently, and a defective TSV may be replaced with a spare TSV whose doped ring is not detected to be cracked. This circuit allows for correction of a compromised 3DIC by replacing possibly compromised TSVs with spare TSVs.

Abstract: A circuit, system, and method for tracking energy use in a electronic circuit. A circuit includes a DC-DC converter and a comparator. The DC-DC converter is configured to maintain a desired output voltage by switching energy to an energy storage device based on an output voltage of the energy storage device. The DC-DC converter includes an output driver configured to source current to the energy storage device. The comparator is coupled to the DC-DC converter. The comparator is configured to identify a drive state of the output driver, and to generate a signal indicative of amount of energy transferred from the DC-DC converter to a load circuit. The signal corresponds to the identified drive state.