Abstract: To supply a magnetic resonance imaging (MRI) apparatus capable of shifting a high frequency of noise into a low frequency during measurement, the magnetic resonance imaging apparatus includes: a gradient magnetic field device (9, 10) that applies a pulse-shaped gradient magnetic field to an object placed in a static magnetic field; and a measurement control unit (4) that drives the gradient magnetic field device by a gradient magnetic field pulse and measures magnetic resonance image data. The measurement control unit performs noise suppression control to shift a frequency of noise generated by the gradient magnetic field device to a low frequency side by changing a waveform of the gradient magnetic field pulse during repetition of the gradient magnetic field pulses at a constant period.

Abstract: The present disclosure relates to a method for testing connectivity. The method is applied to an electronic equipment which is disposed include two test units (e.g. network interface controller, RJ-45 connector) and a network transformer. The test unit couple to the network transformer so that can send a high frequency test signal or a low frequency test signal to the network transformer respectively. When the test unit receives a low frequency response signal, it means correspond internal circuitry of the network transformer does not have a open circuit fault. When the test unit does not receive a high frequency response signal, it means correspond pins of the network transformer does not have a short circuit fault.

Abstract: A method for determining a position of a movable element of a linear actuator of a motor vehicle includes supplying a current to a coil of the linear actuator so as to move and/or hold the movable element by a magnetic field of the coil generated by the supplied current; modulating the current supplied to the coil with an electrical alternating variable having a predetermined frequency; determining an impedance or an admittance of the coil at the predetermined frequency by measuring a further variable at the predetermined frequency; and determining the position of the movable element as a function of the determined impedance or admittance.

Abstract: An exchangeable contact unit which can be attached to or detached from a main body of an inspection jig, includes: a flexible board which is provided with a contact part with respect to an object to be inspected; and a coaxial connector which is directly and electrically connected to the flexible board.

Abstract: A magnetic field sensor for sensing a direction of a magnetic field in an x-y plane, can include a first plurality of magnetic field sensing elements operable to generate a first plurality of magnetic field signals and a second plurality of magnetic field sensing elements operable to generate a second plurality of magnetic field signals. The magnetic field sensor can also include at least one sequence switches circuit operable to select ones of the first plurality of magnetic field signals and to select ones of the second plurality of magnetic field signals. The magnetic field sensor can also include a processing circuit operable to combine the selected ones of the first plurality of magnetic field signals and the selected ones of the second plurality of magnetic field signals to generate at least one sequential signal and to process the at least one sequential signal to generate an x-y angle signal indicative of a direction of the magnetic field in the x-y direction. An associated method is described.

Abstract: A linear travel measurement apparatus for a compression travel of a telescopic spring unit includes an electrically conductive spring. A telescopic spring unit includes a linear travel measurement apparatus of this kind. The spring is configured to form a measurement inductance, which is dependent on an effective length of the spring. The spring has a respective electrical contact at each of its ends and is connected to a measurement capacitance and to an evaluation and control unit by corresponding electrical connections. The measurement inductance forms an electrical LC resonant circuit with the measurement capacitance, the evaluation and control unit are configured to measure the resonant frequency of said LC resonant circuit, and the resonant frequency is given as a function of the compression travel.

Abstract: In an example implementation, an integrated circuit (IC) includes: a plurality of transistors disposed in a plurality of locations on a die of the IC; conductors coupled to terminals of each of the plurality of transistors; a digital-to-analog converter (DAC), coupled to the conductors, to drive voltage signals to the plurality of transistors in response to a digital input; and an analog-to-digital converter (ADC), coupled to at least a portion of the conductors, to generate samples in response to current signals induced in the plurality of transistors in response to the voltage signals, the samples being indicative of at least one electrostatic characteristic for the plurality of transistors.

Abstract: Disclosed is a linear inductive sensor having, on the one hand, a fixed part of transformer type with a primary circuit and at least two secondary circuits, the primary circuit being flowed through by a high-frequency alternating current capable of inducing an electrical voltage in each of the at least two secondary circuits and, on the other hand, a moving part with a target intended to be fixed on a mechanical component executing a movement in rotation about an axis, which the inductive sensor measures angularly. The target is a metal spiral carried by a circular face of a ring having a central recess, the ring being intended to be fixed on the component while being concentric therewith, the spiral projecting axially from the ring while making at least one revolution around and moving away from the recess.

Abstract: A method for locating an anomaly in a distribution circuit including utility power lines includes coupling a radio frequency energy source to the utility power lines, transmitting chirped radio frequency signals into the utility power lines, receiving and digitizing/analyzing signals reflected from the chirped signals by impedance mismatches caused by components and features of the distribution circuit, and generating from the digitized signals of multiple sets of the chirped radio frequency signals a reference data set identifying at least the locations of at least some of the components and features of the distribution circuit. Later sets of the chirped radio frequency signals are transmitted into the utility power lines and signals reflected from the sets of chirped signals are received and digitized and are compared with the reference data set to determine if there are anomalies on the distribution circuit.

Abstract: A phase sensitive inversion recovery (PSIR)-based MR imaging method of at least two chemical species having different MR spectra enables distinction between myocardial scar and myocardial triglyceride deposition. The method includes the steps of: a) generating echo signals at two or more different echo times by subjecting an object (10) positioned in the examination volume of a MR device (1) to an imaging sequence of RF pulses and switched magnetic field gradients, which imaging sequence is an inversion recovery sequence including an inversion RF pulse followed by an excitation RF pulse after an inversion recovery time; b) acquiring the echo signals; c) separating signal contributions of the at least two chemical species to the acquired echo signals; and d) reconstructing a phase-sensitive MR image (28, 29) from the signal contributions of at least one of the chemical species.

Abstract: Systems and methods are provided to determine an internal property of a food product. The system includes one or more analyzing devices, a camera and a central unit in communication with the camera and analyzing device. The analyzing device is configured to analyze an interior region of the food product. The camera is configured to analyze an external property of the food product. The central unit is configured to determine the internal property of the food product based on feedback provided by the analyzing device and the camera.

Abstract: A method for utilizing a probe card includes steps as follows. Providing a probe card having three alignment marks on a reference plane of a circuit board; moving the circuit board to be oriented to a wafer-loading plane of a wafer stage with the reference plane; determining whether a geometric plane defined by the alignment marks is parallel to the wafer-loading plane; and when the geometric plane is not parallel to the wafer-loading plane, adjusting a levelness of the circuit board until the reference plane is parallel to the wafer-loading plane.

Abstract: A measuring apparatus for electromagnetic property of material includes a chamber and a specified shielding piece. The chamber has a cavity inside and the chamber has an electromagnetic wave access terminal to connect to the cavity, used to receive an input electromagnetic wave and output a reflective electromagnetic wave. The specified shielding piece is disposed inside the cavity with respect to the electromagnetic wave access terminal, used to produce a region in side the cavity. The region is dominated by magnetic field and is used to adapt an object to be measured.

Abstract: A wireless testing device includes a trailer connector portion including a plurality of inputs; a communication device; a plurality of loads each connected to one of the plurality of inputs; and a control device. The plurality of inputs is configured to connect to a plurality of circuits in a vehicle. The control device is configured to determine the operability of each of the plurality of circuits in the vehicle when the trailer connector portion is connected to the vehicle by applying each of the plurality of loads to one of the plurality of inputs.

Abstract: A sensor circuit includes a plurality of half-bridge sensor circuits. The sensor circuit includes a sensor output value determination circuit configured to determine a sensor output value. The sensor circuit further includes an error determination circuit configured to generate an error signal based on a first half-bridge sensor signal and a second half-bridge sensor signal. The sensor circuit further includes a control circuit configured to control a selection of one of the first half-bridge sensor circuit and the second half-bridge sensor circuit for providing one of the first half-bridge sensor signal and the second half-bridge sensor signal to the sensor output value determination circuit to determine the sensor output value.

Abstract: The invention relates to a counting sensor for counting the number of rotations or of linear displacements of an object, wherein the counting sensor comprises: one single Wiegand module; at least one sensor element; a processing electronic circuit, which is connected to the sensor element; and a permanent magnet arrangement, which is movable relatively to the Wiegand module; wherein the processing electronic circuit is configured to obtain direction information, whether the permanent magnet arrangement moves in said one direction or in an opposite direction, and (ii) to obtain magnetic pole information; and a data storage for storing a value, which indicates the number of the rotations or of the linear displacements; wherein: the processing electronic circuit is configured (i) to determine, on the basis of the direction information and the magnetic pole information, the number of the rotations or of the linear displacements of the object and to store the corresponding value in the data storage, (ii) to per

Abstract: A method of making a machine system includes assembling sensing elements with a sensor frame, and contacting ferrite cores of the sensing elements with a locating tool to conform an arrangement of the sensing elements to a cylindrical shape of a surface of the locating tool. The sensing elements are secured to the sensor frame in the determined arrangement, and coupled with a housing of a machine system to monitor position of a rotatable component therein. The ferrite cores may be E-type cores, with bridge connections used to sensitize the sensing mechanism to displacement of a rotatable component in X, Y, and Z directions.

Abstract: A method for foreign object detection for an induction charging device is described, including an oscillator circuit, in particular, for a hand-held power tool, a resonance frequency and an associated actual quality of the oscillator circuit being detected and the actual quality is subsequently compared to a setpoint quality as a function of the resonance frequency and a decision is made about the presence of a foreign object based on a defined setpoint quality range. The method provides that an internal temperature of induction charging device is detected, in particular, during the wireless energy transmission, and the actual quality is multiplied by a correction factor based on the internal temperature. Also, an induction charging device is described that includes an oscillator circuit and a control and regulating unit, as well as at least one temperature sensor for carrying out the method.

Abstract: Systems and methods to wirelessly transmit power are provided. A coil assembly is provided. In some examples, the coil assembly is configured to generate a signal in response to an ambient field, and to magnetically couple with a device to deliver power to the device.

Abstract: Traveling wave information from a single end of an electric power delivery system is used to determine a fault location on a power line of the electric power delivery system. Hypotheses of which of a plurality of received traveling waves represents a first reflection from the fault are evaluated. A determination of an arrival time of the first reflection from the fault is used to calculate a distance from the single end of the power line to the fault location.