Abstract: A diagnostic device for a battery includes a measurement unit configured to acquire a current value and a voltage value of the battery, and a diagnostic unit configured to calculate an internal resistance value of the battery based on the current value and the voltage value acquired by the measurement unit, and diagnose the battery based on the internal resistance value. The diagnostic unit is configured to cause the battery to perform discharge at a first current value and a second current value smaller than a predetermined target current value during a first period and a second period shorter than a predetermined target period, respectively, estimate the internal resistance value when the battery is caused to perform the discharge at the target current value during the target period, and diagnose the battery.

Abstract: A method includes: detecting, by a motor controller, an interlock failure of a connector for connecting between a gate driver and the motor controller, the connector being connected to an inverter for driving a motor in an eco-friendly vehicle; and determining, by the motor controller, that the interlock failure of the connector has occurred when an output value of a signal processor provided in the motor controller so that a sensing signal is inputted from the gate driver through the connector is detected as a value beyond a predetermined normal sensing range.

Abstract: A transformer test device (10) for testing a transformer (40) has connections (12) for releasably connecting the transformer test device (10) to the transformer (40). The transformer test device (10) has a source (13) for generating a test signal for testing the transformer (40). The transformer test device (10) has a controllable switching means (15) which is connected to the connections (12) during a transformer test for the purpose of short-circuiting at least one winding (42) of the transformer (40).

Abstract: A low cost planar transmission line sensor and simple calibration method for measuring the complex permittivity of materials with minimal sample preparation over a wide band of radio- and microwave frequencies. The sensor is also used for measuring anisotropic dielectric properties of materials with a defined grain.

Abstract: A system may comprise a frame, a pair of rolls with each of the rolls comprising a roll body having opposite ends and a circumferential surface, a plurality of teeth being formed on the circumferential surface, and at least a portion of the circumferential surface being electrically conductive. The roll may also have a roll shaft having end portions extending from the roll body, with each of the end portions extending from one of the ends of the roll body. The system may also comprise roll supports configured to support the rolls on the frame in a manner such that at least one of the rolls is movable to adjust a separation gap between the rolls, a detection apparatus configured to detect contact between the rolls, and a signaling apparatus configured to produce a signal indicating a change in electrical potential is detected by the detection apparatus.

Abstract: A capacitance element that includes a first lower electrode and a second lower electrode arranged adjacent to each other in a Y-axis direction on a substrate. A first dielectric layer is on the first lower electrode, and a second dielectric layer is on the second lower electrode. A first upper electrode and a second upper electrode are arranged adjacent to each other in an X-axis direction on the first dielectric layer, and a third upper electrode and a fourth upper electrode are arranged adjacent to each other in an X-axis direction on the second dielectric layer. Interlayer conductors are respectively in contact with the first through fourth upper electrodes. A first connection conductor connects the second interlayer conductor and the fourth interlayer conductor to each other.

Abstract: Detecting the source of a defect in a cable may be difficult, in part because present systems may be configured to wind and unwind the cable on many different spools, capstans or other transport equipment. Provided are systems and methods in which a laser speed gauge is used to measure the rotation of a cable assembly component and determine any abnormalities in the rotation (e.g., vibrations, periodic increases/decreases in speed). An example method includes receiving, by a computing device and from a laser speed gauge, a first reading of a rotating cable assembly component. The computing device may covert the first reading of the rotating cable assembly component to a frequency analysis of the rotating cable assembly component and determine based on the frequency analysis of the rotating cable assembly component, a structural defect in a cable caused by the rotating cable assembly component.

Abstract: According to various aspects and embodiments, a power distribution unit (PDU) is provided. The power distribution unit includes an input configured to receive input power, a plurality of outputs each coupled to the input and configured to receive input power, and each output of the plurality of outputs having an output configured to provide output power, and a controller coupled to the plurality of outputs and configured to determine a plurality of time intervals based on a frequency of the input power, measure a current at each time interval of the plurality of time intervals for each output of the plurality of outputs, generate a plurality of current measurement sums based on current measurement values associated with each time interval of the plurality of time intervals, and determine a root-mean-square (RMS) value based on the plurality of current measurement sums.

Abstract: A dielectric resonator is excited at its natural resonant frequency to produce a highly uniform electric field for the generation of plasma. The plasma may be used as a desolvator, atomizer excitation source and ionization source in an optical spectrometer or a mass spectrometer.

Abstract: Described are test structures and methods for measuring silicon thickness in fully depleted silicon-on-insulator technologies.

Abstract: Method for automatic switching of a communication resistor of a HART device in or out, wherein the method comprises steps as follows: transmitting a test signal on an electrical current loop; reading from the electrical current loop a test voltage signal, which is based on the transmitted test signal; comparing the test voltage signal with a reference signal; connecting the communication resistor into the electrical current loop when the test voltage signal exceeds the reference signal.

Abstract: Systems and methods are provided for remotely identifying and classifying materials based on their respective complex permittivity features. Materials of interest to be identified in later inspections are cataloged according to their respective complex permittivity features by applying electromagnetic fields to them and determining their complex permittivity features. That library of features is used to compare field measurements taken during an inspection to determine the presence of a material of interest and to identify it.

Abstract: A differential voltage measuring device includes a first capacitor and a second capacitor each formed of a ceramic capacitor, a differential amplifier for outputting a voltage corresponding to a difference voltage between a voltage held by the first capacitor and a voltage held by the second capacitor, and ?COM for introducing a first voltage to the first capacitor, and a second voltage to the second capacitor with the first capacitor holding the first voltage, and ?COM introduces a third voltage to at least the first capacitor or the second capacitor, and after application of the third voltage stops, introduces the first voltage to the first capacitor or the second capacitor to which the third voltage was introduced.

Abstract: This application discusses techniques for providing sensorless rotor position information of a multiple phase motor without using predetermined motor parameters or models, other than the number of phases of the motor. In certain examples, motor rotor position information can be provided using samples of current from zero-voltage vectors of the motor windings.

Abstract: The present invention relates to the field of material determination or analysis, and provides a method of assessing drying depth of cementitious materials including the following steps: preparing a plurality of cementitious material specimens; drying the cementitious material specimens; conducting electrochemical impedance spectrum measurement on each cementitious material specimen; accordingly determining a model for analyzing the drying depth of the cementitious material specimen. The method of assessing drying depth of the cementitious material provided by the present invention takes the influence of the resistivity changes on the model into consideration, and the drying depth of the cementitious material is reflected and reckoned with regularly changes of the electrochemical parameters, not only increasing the accuracy but also saving much testing labor, time and cost.

Abstract: A method and system for detecting and locating a single-phase ground fault on a low current grounded power-distribution network, comprising: respectively testing and picking up the voltage signals and current signals at multiple positions on each phase feeder (61), and determining the corresponding transient voltage signals and transient current signals according to the extraction of the voltage signals and the current signals (62); when the change in the transient voltage signals and the transient current signals exceeds a preset threshold (63), synchronously picking up the voltage signals and current signals at multiple positions on a three-phase feeder (64); calculating corresponding zero-sequence voltages and zero-sequence currents according to the voltage signals and current signals synchronously picked up at multiple positions on the three-phase feeder (65), and then extracting the steady-state signal and transient signal of the zero-sequence voltage and zero-sequence current at each position on the thr

Abstract: An internal state estimating device includes an electrolysis resistance calculating part calculating a post-deterioration resistance value of an electrolysis resistive component using a detection value from a sensor, a reaction resistance calculating part calculating a post-deterioration resistance value of a reaction resistive component using a resistance increase ratio and an initial resistance value of an reaction resistor, wherein the resistance increase ratio is a ratio of the post-deterioration resistance value of the electrolysis resistive component to an initial resistance value of an electrolysis resistor, and a capacitance calculating part calculating a post-deterioration capacitance value of an electric double-layer capacitive component using the resistance increase ratio and an initial capacitance value of the electric double-layer capacitive component.

Abstract: A resistive environmental sensor including an electrode stack and a sensing layer is provided. The electrode stack includes a first electrode layer, a second electrode layer, and a dielectric layer disposed between the first and second electrode layers, wherein the electrode stack includes a side surface, and the first and second electrode layers are exposed on the side surface of the electrode stack. The sensing layer is disposed on the side surface of the electrode stack, and the sensing layer s in contact with the first and second electrode layers. An environmental variation is inspected by sensing a resistance variation of the sensing layer that is between the first and second electrode layers. The above-mentioned sensor is capable of sensing gases, light, humidity, temperature, and so on. The above-mentioned sensor has advantages of low resistivity and good sensitivity.

Abstract: A circuit and a method for detecting a medium under a gypsum board are provided. The method comprises: first, providing a sensor, the sensor consisting of one group of printed circuit board (PCB) copper foils, namely, forming left and right polar plates by two pieces of completely identical PCB copper foils; next, providing a detection drive signal ClK to be applied to the left and right polar plates so that an electromagnetic field is formed between the left and right polar plates and the earth; further, providing a waveform shaping and phase difference circuit so that each polar plate can generate a phase difference relative to its own drive signal; and then, providing an phase inverter circuit to achieve waveform inversion so as to facilitate filtering and amplification of tiny signals, and sampling direct-current voltage signals of the two polar plates by a micro controller unit (MCU).

Abstract: A system determines the efficiency degradation of organic light emitting devices (OLEDs) in multiple array-based semiconductor devices having arrays of pixels that include OLEDs. The system determines the relationship between changes in an electrical operating parameter of the OLEDs and the efficiency degradation of the OLEDs in each of the array-based semiconductor devices, uses the determined relationship for a selected one of the array-based semiconductor devices to determine the efficiency degradation of the OLEDs, and compensates for the efficiency degradation. The relationship between changes in an electrical operating parameter of the OLEDs and the efficiency degradation of the OLEDs in the array-based semiconductor devices may be determined by the use of a test OLED associated with each of the devices.