Abstract: A system may include a resistive-inductive-capacitive sensor, a driver configured to drive the resistive-inductive-capacitive sensor at a driving frequency, and a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and configured to determine a measured change in a resonant frequency of the resistive-inductive-capacitive sensor and based on the measured change, modify the driving frequency.

Abstract: Methods and apparatuses for using the impedance inhomogeneity pattern (IIP) of a transmission line, or one or more segments thereof, to verify the identity of the transmission line and/or detect whether or not the transmission line has been altered or tampered with. Because the impedance inhomogeneity pattern of a transmission line is unique, unpredictable, and uncontrollable, it can be used as a physical unclonable function (PUF). The IIP can be obtained by a method such as frequency domain reflectometry or time domain reflectometry, and is then compared with a previously stored intrinsic IIP obtained from a transmission line (or segment(s)) prior to first use through the use of, for example, correlation or coherence functions. The method can be used on any transmission line, including electrical, optical and acoustic transmission lines.

Abstract: Method and device for determining a fault location in an electric power distribution network with an infeed and lines in the form of a main strand and a multiplicity of branches of the main strand. First and second measured values are acquired at a first and second measurement point of the power distribution network, and a fault location is determined based on the first and the second measured values. Arrival of respective traveling waves are identified based on the first and the second measured values, and the times of the respective arrival of the traveling wave are stored. A first fault location value is generated using the respective times of both measurement points and a second fault location value is generated using the times of only the first measurement point. The fault location is determined based on the first fault location value and the second fault location value.

Abstract: A wiring substrate includes an insulating body; a first conductor including a first shield layer provided in a first layer inside the insulating body, and a second shield layer provided in a second layer at a different position from the first layer in a thickness direction of the insulating body; a second conductor including a first guard layer provided in a third layer positioned between the first layer and the second layer in the thickness direction, and a second guard layer provided in a fourth layer positioned between the second layer and the third layer in the thickness direction; and a third conductor provided in a fifth layer positioned between the third layer and the fourth layer in the thickness direction.

Abstract: A cable harness test system includes a cable tester that has a microcomputer and a multiplicity of first test point connections for connecting first ends of a multiplicity of electrical lines of a cable harness and is designed to feed line test signals into the multiplicity of electrical lines of the cable harness at the first test point connections, and also a multiplicity of interface simulation devices that each have a multiplicity of second test point connections for connecting second ends of the multiplicity of electrical lines of the cable harness and are each designed to return line test signals received from the cable tester at the second test point connections to the cable tester by the multiplicity of electrical lines of the cable harness.

Abstract: A system for detecting contamination in a two-phase immersion cooling system based on current leakage between two combs on a printed circuit board. A first comb is opposite a second comb, wherein each finger of the first comb is positioned between two adjacent fingers on the second comb. The combs are positioned near a heat source in the liquid portion of the fluid. As the fluid boils, contaminants are distilled out of the fluid. Acidic contaminants deposited on either comb may cause metal migration to occur, resulting in bridging between two combs. A current sensor may detect the current leakage and send a signal to allow the information handling system, the fluid, or the cooling system to be serviced before damage occurs to the information handling system.

Abstract: A component determination system for determining, in a case when a first component to be mounted on a board by a first mounting operation and a second component mounted on the board by a second mounting operation have a particular corresponding relationship, whether a combination of the first component and the second component mounted is permissible, the component determination system including: a first characteristic information acquiring section configured to acquire first characteristic information of the first component for which the first mounting operation has been completed; a second characteristic information acquiring section configured to acquire second characteristic information of the second component prepared prior to the second mounting operation; and a combination determining section configured to determine whether to allow the combination of the first component and the second component based on the acquired first characteristic information and the acquired second characteristic information.

Abstract: An apparatus and method for detecting a partial discharge produced at a discharge site in electrical equipment or accessories are provided. The apparatus includes two sensors having an operating range below 30 Megahertz, between 5 and 30 Megahertz, between 14 and 20 Megahertz, or centered at 18 Megahertz. The apparatus includes an acquisition module, a processor and an alarm module producing an alarm upon detection of a partial discharge in the electrical equipment or accessories. The method includes detecting magnetic fields with the sensors, generating and receiving two signals and producing a resulting signal by processing the two signals. The processor is configured to issue alarm instructions if the resulting signal exhibits a property representative of a detection of the partial discharge and otherwise remain in a standby state (ready for signal detection). The method includes generating an alarm after issuing the alarm instructions.

Abstract: Detecting user contact with one or more electrodes of a physiological signal sensor can be used to ensure physiological signals measured by the physiological signal sensor meet waveform characteristics (e.g., of a clinically accurate physiological signal). In some examples, a mobile and/or wearable device can comprise sensing circuitry, stimulation circuitry, and processing circuitry. The stimulation circuit can drive one or more stimulation signals on one or more electrodes, the resulting signal(s) can be measured (e.g., by the sensing circuitry), and the processing circuitry can determine whether a user is in contact with the electrode(s). Additionally or alternatively, in some examples, mobile and/or wearable device can comprise saturation detection circuitry, and the processing circuitry can determine whether the sensing circuitry is saturated.

Abstract: The present disclosure provides a test method and a test device for an adapter. The method includes: detecting temperatures of elements in the adapter; determining whether the adapter is in a temperature balance state according to the temperatures of the elements in the adapter; increasing an ambient temperature of an environment where the adapter is located in response to the temperature balance state; detecting an output power of the adapter, and determining whether the adapter performs a power reduction operation before the temperatures of the elements reach a first preset temperature threshold; and determining that a test for the adapter fails when the power reduction operation does not occur.

Abstract: A method for testing a network is disclosed, the network having a number of network sections, in particular in a cable harness having a number of such networks, having the following steps of: recording training measured values for a number of reference networks, wherein the reference networks correspond to the network to be tested, preprocessing the recorded training measured values in order to eliminate data errors in the training measured values, training a first classification system using the training measured values, wherein the first classification system is based on at least one algorithm from the field of machine learning and is designed to classify a network either as fault-free or faulty, training a second classification system using the training measured values, wherein the second classification system is based on at least one algorithm from the field of machine learning and is designed to classify a faulty network section of a network, recording test measured values for the network to be tested, p

Abstract: As one example, an apparatus includes a dielectric microsensor comprising a microfluidic chamber that includes a capacitive sensing structure, the microfluidic chamber including a fluid input port to receive a volume of a blood sample. A bioactive agent is disposed within the chamber to interact with the volume of the blood sample received in the microfluidic chamber. A transmitter provides an input radio frequency (RF) signal to an RF input of the dielectric microsensor. A receiver receives an output RF signal from an RF output of the dielectric microsensor. A computing device that computes dielectric permittivity values of the sample that vary over a time interval based on the output RF signal, the computing device to provide an assessment of hemostatic dysfunction and associated coagulopathy based on the dielectric permittivity values.

Abstract: A testing probe apparatus for testing die. The testing probe may include a probe interface and a carrier for supporting at least one die comprising 3D interconnect (3DI) structures. The probe interface may be positionable on a first side of the at least one die and include a voltage source and at least one first inductor operably coupled to the voltage source. A voltage sensor and at least one second inductor coupled to the voltage sensor may be disposed on a second opposing side of the at least one die. The voltage source of the probe interface may be configured to inductively cause a voltage within the 3DI structures of the at least one die via the at least one first inductor. The voltage sensor may be configured to sense a voltage within the at least one 3DI structure via the at least one second inductor. Related systems and methods are also disclosed.

Abstract: In an embodiment, a method includes filtering, with a low-pass filter, a voltage signal (Vdd) of a chip to create a filtered signal (Vref). The method further includes dividing Vref by a given factor. The method further includes determining whether a voltage droop occurred in Vdd by comparing Vdd to the divided Vref. The method further includes outputting a droop detection signal if Vdd is less than the divided Vref. In an embodiment, dividing Vref by the given factor includes selecting, with a multiplexer, one of a plurality of divided Vref signals outputted by a voltage divider. The selecting is based on a selection signal.

Abstract: A method and apparatus for obtaining a valid peak from an output signal of a resolver sensor are provided. The method includes inputting an excitation signal to a resolver sensor, receiving a resolver signal from the resolver sensor, receiving a high peak and a low peak from the received resolver signal, determining whether the high peak or the low peak falls within an effective range, and defining the high peak or the low peak as a valid peak when the high peak or the low peak falls within the effective range.

Abstract: A test system includes: an input signal generation unit that generates an input signal that drives a semiconductor device as a test target; a reference signal generation unit that supplies a reference signal, which is for use in generating the input signal, to the input signal generation unit; and a detection unit that, while implementing a test of the semiconductor device, generates a standard signal in which the same signal output as an output of the reference signal output from the reference signal generation unit is expected, and outputs a detection unit output signal based on the reference signal and the standard signal.

Abstract: The present invention relates to a monitoring device for monitoring catenary-pantograph interaction in a railway vehicle (100) comprising a frequency-tunable radio receiver module (2) with its associated antenna (1) for the reception of radio signals (500) emitted by pantograph-catenary interaction in the radio frequency and microwave bands; and a control module (4) for detecting electric arcs (400) in the radio signal (500) received by the radio receiver (2) within at least one of the tuned bands. Information about the detected arcs (400) can be stored in the storage module (3) and used to generate records and/or alarms sent by a communication module (6). The radio receiver module (2) can be accompanied, in an input-output module (9) to facilitate pantograph monitoring and maintenance, by a pantograph current measurement module (8) and an odometry and positioning module (7) to obtain the position and speed of the vehicle.

Abstract: A jig pressing-type pressing short-circuiting inspection method includes the steps of: pre-aging battery cells, each of which is manufactured by inserting an electrode assembly in a battery container, injecting an electrolyte into the battery container, and sealing the battery container. The method includes inserting the plurality of battery cells in an active jig; pressing the active jig; and inspecting electric current of the battery cells. The inspection method permits detection of a low-voltage defect of a battery cell in a pre-aging state, which shows a high voltage regulation per capacity, thus greatly reducing the inspection time, and enabling simultaneous inspection of a plurality of battery cells. In addition, a micro-defect occurring in a stack-folding type battery cell can be accurately detected, which is difficult to be detected by the conventional inspection method.

Abstract: The present disclosure relates to the determination of impedances in an electrical network. Methods and apparatuses for determining one or more impedances within a root and branch network are disclosed. The impedance of a common root part and the impedance of a branch of the electrical network may be determined based on the current in the common root part, the current in a branch of the electrical network and the voltage across the common root part and the branch. By determining the impedance of different parts of the electrical network in this way, the network may be monitored over time and the location of any faults or impending faults in the network may be identified more exactly without requiring invasive network probing and testing.

Abstract: An example apparatus includes a cover to shield, at least partly, a conductive trace on a surface of a circuit board from electromagnetic interference. The cover includes a conductive surface that faces the conductive trace. The cover at least partly encloses a volume over the conductive trace. The volume is for holding air over the conductive trace. One or more contacts electrically connect the conductive surface of the cover to electrical ground on the circuit board.