Abstract: A device may include a switch having a first position in which the switch connects a voltage source to the conductor segment and a second position in which the conductor segment is connected to operational electronics. A device may include a switch controller configured to change the switch between the first position and the second position. A device may include a current sensor configured to detect a leakage current from the conductor segment when the switch controller causes the switch to be in the first position.

Abstract: A magnetic resonance imaging (MRI) apparatus that includes a multi-resonance transmit/receive (T/R) switch, one switch design having a top side and a bottom side of a microstripline based hybrid coupler, a first pin diode, a second pin diode, four vertical transmission lines and six horizontal transmission lines arranged in a bended manner on the microstripline. The top side is associated with a first port and a second port, and electrically connected to the first pin diode and the second pin diode. The bottom side is associated with a third port and a fourth port, and electrically connected with the first pin diode and the second pin diode. The switch receives radio frequency (RF) pulses of different frequencies transmitted to and received from an MRI RF coil where the different frequencies are received concurrently and without tuning by the multi-resonance T/R switch from the MRI RF coil.

Abstract: A system for estimating moisture in soil includes a first antenna for transmitting RF signals, second antennas for receiving RF signals, and a controller configured to: emit, via the first antenna, RF signals at a plurality of frequency increments; determine a channel frequency response (CFR) based on amplitude attenuation and phase change of reflected RF signals detected by the second antennas; determine a power delay profile (PDP) for the second antennas based on the CFRs; extract a subset of the reflected RF signals using peak detection on the PDPs; and for each layer of the soil and for each of the subset of reflected RF signals, determine: i) a wavelength of the reflected RF signal in the layer, ii) an estimated depth of the layer, iii) a dielectric permittivity of the layer based on the wavelength, and iv) an estimated moisture content of the layer based on the dielectric permittivity.

Abstract: An irrigation system comprises a plurality of towers, a time domain reflectometry (TDR) unit, and a central controller. Each tower includes a successive one of a plurality of safety switches, with each safety switch being either closed or open. The safety switch of each tower is electrically connected to at least one safety switch of another tower. The TDR unit is electrically connected to at least one safety switch and is configured to output data regarding an open safety switch. The central controller is configured to receive data from the TDR unit, and determine, according to the data from the TDR unit, at least one of a location of the open safety switch and an identifier of the tower associated with the open safety switch.

Abstract: A speed signal converter circuit including an analog signal conditioning stage and a digital signal processing stage. The analog signal conditioning stage determines a voltage of an input speed signal, combines the voltage with an alternating current (AC) injection voltage signal having a set frequency to generate a combined voltage signal, and outputs a pulsed zero-crossing signal including a rising edge and a falling edge indicating a zero-crossing of the input speed signal based on the combined voltage signal. The digital signal processing stage determines a rising edge slope of the input speed signal and a falling edge slope of the input signal based on a rising edge and a falling edge of the pulsed zero-crossing signal, and determines an optimal edge among one of the rising edges or the falling edges based on a comparison between the rising edge slope and the falling edge slope.

Abstract: The present invention relates to a power bank having a function of providing a chargeable range of a battery pack, a battery pack charging system including the same, and a method therefor, and more particularly, to a battery pack charging system that provides information on how far the battery pack can be charged with charging power of the power bank through data communication between the power bank and the battery pack charged by receiving charging power from the power bank.

Abstract: A three-dimensional on-chip magnetic sensor includes first, second, and third coils. The first and second coils include respective planar spirals formed by metal layers and metal vias. Each planar spiral of the first coil includes first interconnected loops wound about a first axis, where neighboring first planar spirals are electrically connected to each other. Each planar spiral of the second coil includes second interconnected loops wound about a second axis, where neighboring second planar spirals are electrically connected to each other. The third coil has a planar spiral includes third interconnected loops that are wound about a third axis. Each electrically conductive coil is configured to produce a respective electromagnetic force (EMF) induced by an oscillating magnetic field, the respective EMF driving a respective alternating current (AC) through the respective readout circuit. Each readout circuit is configured to detect a respective peak voltage magnitude of the respective AC.

Abstract: Provided is a technique of identifying fluorescence emitted from a measurement target, with a simpler device configuration. A fluorescence detection device includes: a generating section that generates pulsed laser light which causes spin polarization and spin relaxation in a phosphor that emits fluorescence whose intensity varies according to magnetic resonance; and a modulating section that modulates the pulse frequency of the pulsed laser light.

Abstract: An echo planar imaging method capable of reducing image distortion is provided. Two radio frequency (RF) pulses ? and ? are used to respectively flip over a longitudinal magnetization into a transverse plane at different moments, so as to obtain observable transverse magnetization; the transverse magnetization obtained by flipping over the longitudinal magnetization by means of ? and ? are respectively rephased in two different echo trains by means of gradient pulses. Navigator echo signals are respectively collected before the two gradient echo trains, and the amplitude difference between two gradient echo train signals is corrected on the basis of the amplitude difference between the two navigator echo signals. Correcting the signals collected by the two gradient echo trains, so as to obtain two pieces of image data, and the two pieces of image data are averaged to obtain a final image.

Abstract: For a gradient system (102, 300) for a magnetic resonance imaging system (100) a solution for improving the control of gradient fields for a higher image quality shall be created.

Abstract: An apparatus and method for adjusting differential impendence of pins in a socket are described. A socket or test system includes a pin assembly that contains a pin block and pins. The pin block is formed from a material having a first permittivity. The pins include differential pin pairs with a fine pitch and provide electrical contact to an electronic package disposed on the pin block. A volume between each pin of the differential pin pairs or between adjacent pin pairs have a second permittivity that is different than the first permittivity. The volume is filled with air or one or more materials (or air) whose combined permittivity reduces or increases the differential impendence.

Abstract: A method for detecting an internal-short-circuit in a battery. The method includes: obtaining a battery-charging standard parameter (S21); obtaining a voltage V0 of a battery when the battery enters a constant-current charging phase (S22); obtaining a voltage difference ?V generated across a charging time frame ?t during constant-current charging of the battery (S23); obtaining a charge current I when the battery has been charged for the time frame ?t (S24); determining an internal short circuit resistance Ri of the battery based on the battery-charging standard parameter, the voltage V0, the voltage difference ?V, and the charge current I (S25); and determining, based on the internal short circuit resistance Ri of the battery, whether an internal short circuit exists in the battery (S26).

Abstract: An example apparatus, computer-implemented method, and electronic device for determining an adjusted strength of a touch event at a mutual capacitance touch-sensitive surface are provided. An example apparatus includes a mutual capacitance sensing grid, having a plurality of electrode pairs, each with a transmitting electrode and a receiving electrode. The apparatus further includes a sensing grid controller coupled to the sensing grid and configured to determine an ambient sensing value for each electrode pair in an untouched state. The sensing grid controller is further configured to identify a touch event and a touch strength at the electrode pair based on a change in a sensing value. The apparatus is further configured to determine an adapted touch strength corresponding to the first electrode pair, based at least in part on the first ambient sensing value.

Abstract: A diamond magneto-optical sensor includes: a diamond including a color center with an electronic spin, and a reflecting surface that reflects excitation light propagated through an optical system into the diamond, wherein the reflecting surface reflects light radiated from the color center excited by the excitation light and condenses the light in the direction of the optical system.

Abstract: The present invention relates to a device (50) for testing a voltage converter (10, 20), having a frequency response analyzer (60) and an impedance converter (70). The frequency response analyzer (60) is configured to measure an electrical transfer function over a predefined frequency range. The frequency response analyzer (60) has a test signal output (61) for outputting a test signal for the voltage converter (10, 20), a reference signal input (64) for receiving a reference signal which is applied to the voltage converter (10, 20) for the purpose of testing the voltage converter (10, 20), and a response signal input (67) having a predefined input impedance (68) for receiving a response signal from the voltage converter (10, 20).

Abstract: An abnormality detection method of a sub battery (LFP type battery) for backing up a main battery that includes the steps of charging the sub battery to a fully charged state, discharging a predetermined current amount from the fully charged sub battery, maintaining the sub battery in a state where the current becomes equal to or less than a predetermined value until a predetermined time elapses, discharging a detection current for detecting an abnormality of the sub battery from the sub battery after a predetermined time elapses, calculating a voltage drop amount, which is a difference between the cell voltage at the start of discharge of the detection current and the cell voltage at the end of discharge, for a plurality of battery cells constituting the sub battery, respectively, and determining that the sub battery is abnormal.

Abstract: The embodiment of the present disclosure provides an imaging method for a dispersion energy spectrum of surface waves, an electronic device, and a storage medium. The imaging method includes: obtaining first surface wave data, and the first surface wave data corresponding to a space-time domain representation; processing the first surface wave data to obtain the second surface wave data, and the second surface wave data corresponding to a space-frequency domain representation; and processing the second surface wave data based on a preset algorithm to obtain a first imaging result, the first imaging result corresponding to a slowness-frequency domain representation.

Abstract: A capacitance sensing circuit and method uses a current pulse to charge an external capacitor. A first voltage associated with the external capacitor is converted to current to charge an internal capacitor. A second voltage, which is associated with the internal capacitor that corresponds to the first voltage, is compared with an adjustable threshold voltage to generate a toggle signal. The adjustable threshold voltage is changed in response to the toggle signal, which is associated with a capacitance of the external capacitor.

Abstract: Embodiments herein relate to a current sensor for a power converter such as a buck converter. The power converter is fabricated on a high bandgap semiconductor die while the current sensor includes a portion on the same die and a portion on a silicon die. The portion on the same die includes a sense transistor, while the portion on the silicon die includes a feedback circuit for controlling a voltage of the sense transistor to ensure it is biased according to the bias of a switching transistor of the power converter. A current of the sense transistor can then be processed such as by an averaging or sampling process.

Abstract: An MPI device generates projection data of a magnetization change based on a position of an FFL region in a scanning direction and an angle of the FFL region in a rotation direction, generates corrected projection data by performing sensitivity correction on the projection data by using a system function previously acquired for each piece of projection data, and generates a magnetic nanoparticle image by performing image reconstruction on the corrected projection data. When generating the system function, processing circuitry makes a linear zero magnetic field generation coil form the FFL region in a structure as a subject and scan, rotate, or scan and rotate the FFL region, makes an excitation magnetic field application coil apply an excitation magnetic field to a magnetic field region, makes a detector detect the magnetization change in the structure, and generates the system function in regard to each piece of projection data.