Abstract: There are provided a detection method and detection apparatus of an operating state of a circuit. The method includes: forming a neural network that acquires a state category of a circuit to be detected; measuring electrical characteristic parameters of at least one node in the circuit to be detected; inputting the measured electrical characteristic parameters of at least one node to the neural network, and obtaining the state category of the circuit to be detected through the neural network.

Abstract: A rotation angle detection device includes a driving gear rotated integrally with a rotary body, a first driven gear and a second driven gear coupled to the driving gear and rotated in cooperation with the driving gear, a first sensor that detects rotation of the first driven gear and generates a first sensor output, and a second sensor that detects rotation of the second driven gear and generates a second sensor output. An initialization method includes adjusting zero points of the first and second sensor output obtained at positions of rotation references of the first and second driven gears, measuring a deviation amount occurring in a calculation of rotation information of at least one of the first and second driven gears, and correcting the zero point of at least one of the first and second sensor outputs based on the measured deviation amount.

Abstract: A tester for a relay comprises an enclosure, a testing circuit that includes a controller, electronic switch components, a power source, indicator LEDs, a test start switch, a relay type switch, and five electric leads each connected with one terminal of the relay. With the relay type switch set to the type of relay being tested, with power supplied to each lead, and with the test start switch actuated, the controller can set each lead to ground, in turn, and then count the number of other leads that are grounded as a result. The controller then illuminates the at least one indicator to indicate either the passing relay test or the failed relay test based on the counts measured. Once the leads connected to the relay coil are identified, cyclic testing of the relay can be performed.

Abstract: A system and method for reducing inductance and capacitance and shielding signals in an integrated circuit test for devices under test (DUT) is disclosed. Inductance and capacitance are reduced in two ways. First, by recessing the contact pin housing 22 directly into the load board 20 thereby eliminating much of distance between the load board and DUT. Second, surrounding the slot/well 50 in which each RF contact pin resides in the housing with a ground isolation cage 46,46a, 48, 47 of electrically conductive strips or rings at the top and bottom of the housing adjacent the slot with connecting vias thereby creating an isolation cage against RF cross talk transmission and further lowering inductance and capacitance.

Abstract: A lightning strike alarm system using a Bipolar Conventional Air Terminal (BCAT) is provided. The lightning strike alarm system using BCAT including a rod element to which a ground charge is electrified and an electrification plate-cone or an electrification plate-tube electrified by a thunderstorm cloud, includes a luminescence unit to be electrically connected to the rod element and the electrification plate-cone or the electrification plate-tube and emits light by electric energy electrified to the electrification plate-cone or the electrification plate-tube by the thunderstorm cloud. The lightning strike alarm system enables a user to find that an impulse current of the thunderstorm is normally and safely flown to the ground, and thus, the user may have psychological security.

Abstract: In one embodiment, assessing the quality of an adhesive bond of a composite material includes passing a vector electric field through a thickness of the composite material, measuring dielectric properties of the composite material, determining one or more dielectric parameters of the composite material, and comparing the one or more dielectric parameters with one or more reference dielectric parameters.

Abstract: A method includes selecting a test waveform to inject from a first DC converter to at least one first DC power source other than a fuel cell, determining a first resulting ripple that will be generated in response to injecting the test waveform onto the battery, determining at least one offset waveform to inject from at least one second DC converter to at least one second DC power source to generate one or more second ripples which cancel the first resulting ripple, injecting the test waveform from the first DC converter to the at least one first DC power source, injecting the at least one offset waveform from the at least one second DC converter to the at least one second DC power source, and determining a characteristic of the first DC power source based at least in part on the impedance response of the first DC power source.

Abstract: In a method and apparatus for determination of phase distributions in MR imaging, a measured phase distribution of the region of interest is combined with at least one second phase value to form a combination-phase distribution, wherein the phase values of the combination-phase distribution are restricted to a defined presentation interval. A correction-phase distribution is generated, based on a known magnetic field distribution in the region of interest. The phase values thereof are not restricted to the defined presentation interval. A corrected combination-phase distribution is generated using the correction-phase distribution and the combination-phase distribution, in which the phase values are restricted to the defined presentation interval. An absolute combination-phase distribution is generated from the corrected combination-phase distribution, in which the phase values are not restricted to the defined presentation interval.

Abstract: Various embodiments of the present technology may comprise methods and apparatus to determine an RSOC value of a battery. The methods and apparatus may comprise utilizing various parameters, such as voltage and/or current, to calculate the RSOC of the battery. In various embodiments, the methods and apparatus may display one of a first RSOC and a second RSOC. In various embodiments, the methods and apparatus may further detect changes in the relevant parameter(s), adjust the reported RSOC of the battery accordingly, and report the adjusted RSOC.

Abstract: A power transmission system and method for transmitting power over a three-phase power system on a multi-conductor power cable between a surface and a sub-surface location are provided. A surface system includes a power supply providing a direct current (DC) power signal to the power cable. A sub-surface system includes a downhole system coupled to a Y-point of a downhole motor. The downhole system is configured to be powered by (i) the DC power signal provided by the surface system, (ii) alternating current (AC) power drawn from the Y-point, and (iii) a combination of the DC power and the AC power. The downhole system is powered by the DC power when the power cable does not have an insulation fault, and the downhole system is powered by the AC power or the combination of the DC power and the AC power when the power cable has an insulation fault.

Abstract: Systems and methods for magnetic field-dependent relaxometry using magnetic resonance imaging (“MRI”] are provided. Relaxation parameters, including longitudinal relaxation time (“T1”) and transverse relaxation time (“T2”), are estimated from magnetic resonance signal data acquired at multiple different magnetic field strengths using the same MRI system. By measuring these relaxation parameters as a function of magnetic field strength, T1 dispersion data, T2 dispersion data, or both, are generated. Based on this dispersion data, quantitative physiological parameters can be estimated. As one example, iron content can be estimated from T2 dispersion data.

Abstract: A system to determine the ground impedance of a conduit system includes a conductive sheath and a resistor of known value. The conductive sheath is configured to surround a portion of a conductor housed within a conduit system. Capacitive coupling occurs between the sheath and the conductor to establish a voltage source. The resistor is electrically coupled between the voltage source and a metal component of the conduit system, and a voltage drop is read across the resistor to determine the health of the ground impedance of the conduit system.

Abstract: What provided is a biosensor including: a substrate having a surface with first and second regions adjacent each other; a magnetoresistance effect element disposed on the first region; a soft magnetic thin film on the second region; a protective film disposed on both the first region and the second region, covering a surface of the soft magnetic thin film, and disposed on the top part of the second region and contains an affinity substance recognizing the biomolecule on the outer surface of the second region exclusively; and an MR cover film disposed on at least the top part of the first region, disposed on the protective film above the magnetoresistance effect element, and being free of the affinity substance, wherein the soft magnetic thin film transmits an in-plane component of a stray magnetic field of magnetic beads to the magnetoresistance effect element.

Abstract: A diode with a current sensor is disclosed. The diode includes an anode region, a cathode region, and a channel-stop region. The diode further includes a sense resistor that is connected between the channel-stop region and the cathode region. When the diode is forward biased, a sense current flows through the sense resistor that corresponds to the forward current flowing through the diode. When the diode is reverse biased, the channel-stop region helps prevent a breakdown condition in the diode.

Abstract: A magnetic resonance imaging system (10) includes a magnetic gradient coil system (22) configured for generating gradient magnetic fields by providing a predetermined temporal electrical current profile to at least one magnetic gradient coil in accordance with a desired magnetic resonance examination mode. An additional device (50), which is not part of the original magnetic resonance imaging system (10) is positioned within an inner region (44) of the magnetic resonance imaging system (10) for special examination or other purposes. The additional device (50) is capable of generating an eddy current in at least a portion of the additional device (50) when exposed to the generated gradient magnetic field.

Abstract: A test cell station (50) for at least one electrochemical test cell (10), comprising a housing (57), at least one receptacle (51) for the contacting insertion of at least one electrochemical test cell (10) and electrical connection means (54) for the electrical connection of a test cell (10) that has been inserted into the receptacle (51), characterized in that a thermally insulated temperature chamber (20) with a controllable cooling/heating device (27) for adjusting a temperature in the temperature chamber (20) is integrated into the test cell station (50), wherein the receptacle (51) is arranged in the test cell station (50) in such a way that the corresponding receptacle space for the electrochemical test cell (10) is arranged within the temperature chamber (20).

Abstract: Systems and methods for testing radio frequency FET switches at high RF voltages. Embodiments utilize an impedance transformer, or resonator, to step up the available voltage from an RF signal generator and amplifier to a device under test (DUT). The resonator reduces the RF power required to test at higher voltages, resulting in lower cost and other benefits. When a DUT begins to exhibit excessive non-linear distortion, resonance is lost, applied RF test signal power is reflected back as a reflected signal, and current to the DUT is starved by the resonator, protecting the DUT from destructive power levels. Measuring the amplitude of the reflected signal at the harmonic frequencies of the RF test signal allows detection of a harmonic knee point for selected reflected signal harmonics, and consequently allows determination of the power level of the RF test signal at which excessive non-linear distortion occurs.

Abstract: The present invention relates to methods for detecting gases in an environment using chemical and thermal sensing. In one embodiment, a method includes exposing a chemiresistor embedded within a sensor pixel to a gas in an environment; setting a heater embedded within the sensor pixel to a sensing temperature, the sensing temperature being greater than room temperature; measuring an electrical resistance of the chemiresistor in response to setting the heater to the sensing temperature; and in response to a difference between the electrical resistance of the chemiresistor and a reference electrical resistance being less than a threshold, supplying a fixed power input to the heater embedded within the sensor pixel and measuring a temperature of the sensor pixel relative to a reference temperature.

Abstract: The present disclosure describes a power stage. The power stage includes a metal-oxide semiconductor field-effect transistor (MOSFET) and a driver IC coupled to the MOSFET. The driver IC is configured to switch the MOSFET to an ON-state so that MOSFET conducts a current. The driver IC includes a current monitor circuit that outputs a current monitor signal, which corresponds to the current through the MOSFET when it is in the ON-state. The current monitor signal includes an error caused by a temperature difference between the MOSFET and the driver IC. As a result, the driver IC further includes a compensation circuit that is configured to determine a thermal gradient across the driver IC, and based on the thermal gradient, adjust the current monitor circuit to reduce the error.

Abstract: The present disclosure provides an insulation detection device and method for an energy storage system. The insulation detection device includes a positive switching device, a negative switching device, a sampling unit, a reference voltage terminal and a processor. The sampling unit is configured to collect a positive sampled signal on the energy storage device when the positive switching device and the negative switching device are in a first switching state, and collect a negative sampled signal on the energy storage device when the positive switching device and the negative switching device are in a second switching state; and the processor is configured to determine a positive insulation resistance value and a negative insulation resistance value of the energy storage device according to the positive sampled signal and the negative sampled signal.