Abstract: An apparatus and a method for diagnosing battery replacement for vehicles may accurately diagnose whether a battery has been replaced using an internal resistance of the battery. The apparatus includes a measurer for measuring the internal resistance of the battery, a storage for storing the measured internal resistance, and a controller for diagnosing whether the battery has been replaced based on the internal resistance. The controller, when vehicle power is reset, controls the measurer to measure a first or second internal resistance after starting a vehicle, updates and stores the measured first or second internal resistance in the storage, compares a current first internal resistance value with a former first internal resistance value or a current second internal resistance value with a former second internal resistance value, and diagnoses that the battery has been replaced when the corresponding values differ from each other.

Abstract: A system for tracking a below-ground transmitter from an aerial receiver. The receiver has an antenna assembly, a processor, and a propulsion system. The antenna assembly detects the magnetic field from an underground transmitter and generates an antenna signal. The processor is programmed to receive the antenna signal and generate a command signal, which moves the receiver to a position above the transmitter. Once in the desired position, which may be a reference plane at a fixed elevation, the antenna assembly measures the magnetic field to determine the location of the drill bit along borepath.

Abstract: A device for measuring a flow velocity and a flow direction and geological parameters of groundwater through cross holes of deep wells includes detectors and a device for throwing the tracer source. A method includes measuring a correspondence between a conductivity and a concentration of a tracer solution at different temperatures in a laboratory; selecting at least two boreholes; selecting a target aquifer section; placing the detectors in the target aquifer section in the hole to test a conductivity background value and a temperature value; using the device for throwing the tracer source to place the tracer solution in the hole for throwing the tracer source, and using the detectors to measure a water conductivity and temperature in a detection hole, to obtain a distribution curve of a tracer solution solubility with time; performing cross-test, and calculating the seepage flow velocity and flow direction of groundwater in the hole.

Abstract: Apparatus and associated methods relate to determining health of an electrical heater of an air data probe based on a comparison between a calculated expected value and a measured value of an electrical property of the electrical heater. The expected value of the electrical property is calculated based in part on the electrical power provided to the electrical heater and further based in part on the aircraft flight parameters and/or environmental conditions. Such aircraft flight parameters and/or environmental conditions can include at least one of: electric power source status, airspeed, air pressure, altitude, air temperature, humidity, liquid water content, ice water content, droplet/particle size distribution, angle of attack, and angle of sideslip. These aircraft flight parameters and/or environmental conditions are received via an aircraft interface.

Abstract: The battery degradation detection device includes an impedance measurement unit and a degradation detection unit. The impedance measurement unit measures impedances of a battery at a plurality of frequencies. The impedance for at least one of the plurality of frequencies, measured by the impedance measurement unit, has a positive imaginary component. The degradation detection unit detects degradation of the battery on the basis of real components of the impedances at the plurality of frequencies detected by the impedance measurement unit.

Abstract: This proximity sensor includes: a cylindrical housing having an opening at one end in the axial direction; a detection part housed at the other end of the housing and detecting the presence or absence of a detection target contactlessly; a substrate housed in the housing and mounted with a control circuit for controlling the detection part; a detection part shield preventing external noise from entering the detection part and including a first face part adhered to the front surface on the other side of the detection part, and a side face part configured from multiple side pieces connected to the outer periphery of the first face part and bent from the first face part to cover the side surface of the detection part; and a resin provided around the detection part and the detection part shield.

Abstract: A method capable of effectively detecting an earth state and an electrical apparatus using the same are provided. The electrical apparatus includes a first detection unit for detecting whether there is power between a power supply line L and an earth line G and outputting a first detection signal, a second detection unit for detecting whether there is power between a neutral line N and the earth line G and outputting a second detection signal, and an earth state determining unit for determining an earth state according to the first detection signal and the second detection signal and determining whether a power supply is connected in a normal phase or a reversed phase.

Abstract: Battery monitoring systems having conductive strips and related methods are disclosed herein. According to an aspect, a battery monitoring system includes a conductive strip having a first end and a second end. The system also includes conductivity measurement circuitry operatively connected to the first end and the second end of the conductive strip. The conductivity measurement circuity is configured to indicate whether conductivity between the first end and the second end meets a predetermined threshold. Further, the system includes a strap attached to at least one of the first end and the second end, configured to attach to a battery, and configured to apply tension to the conductive strip when attached to the battery.

Abstract: Provided is a measuring method for testing a device under test (DUT) having a plurality of terminals and, particularly, to a means for measuring the functions and performance of various electronic devices in which an electronic circuit such as that in an electronic device, a semiconductor element, a circuit module, and a circuit board is mounted, and to: a method by which a processor supports measurement with software such that unit costs can be reduced to be lower than those of conventional means operating with various, high-cost hardware; and a device using the same.

Abstract: There is provided systems, apparatus, and methods for locating a fault in a plurality of windings of a transformer. In one embodiment, the apparatus may include: a measurement device configured to measure electrical flow parameters of the transformer when the transformer is in an online mode; and a fault location determination unit configured to determine electrical flow parameters of the windings from the measured electrical flow parameters of the transformer, wherein the fault location determination unit is configured to process the determined electrical flow parameters of the windings to determine the location of the fault in the windings.

Abstract: An array of optically pumped magnetometers includes an array of vapor cells; and an array of beam splitters. The array of beam splitters is arranged into columns, including a first column, and rows. Each row and each column includes at least two of the beam splitters. The array of beam splitters is configured to receive light into the first column of the array and to distribute that light from the first column into each of the rows and to distribute the light from each of the rows into a plurality of individual light beams directed toward the vapor cells.

Abstract: Methods and devices for the characterization of biological specimens by the use of electroluminescent materials. When placed in close proximity or direct contact to a biological specimen and an electrical signal is transmitted, electroluminescence is generated in response to the presence of the specimen. The electroluminescence produced can be in the form of an image of the specimen. The image is captured by an optical device that collects light and displays or otherwise processes the image according to the particular need or purpose. In general, the method requires preparing an electroluminescent assembly including the biological specimen, a dielectric layer, and a substrate, put together in any order. The method uses an electrical signal transmitted to the assembly. The device may be configured in a closed-circuit electrical configuration or it may be in a configuration where the EL assembly is at open circuit with respect to the power source.

Abstract: A modified battery cell for simulating failure conditions includes an electrical cell and a controllable voltage source. A transistor gate is joined to a positive output of the source and to a negative tab of the cell at the transistor source. One side of a resistor implanted in the cell is joined to the transistor drain and the other side is joined to the cell positive tab. Controlling voltage source voltage allows current to flow from the transistor source to the transistor drain and through the resistor. Current flow through the resistor causes heating within the electrical cell that can be monitored to simulate an electrical cell failure. A method for testing an electrical cell is also provided.

Abstract: In a method of performing magnetic resonance (MR) imaging, an MR apparatus, and a computer-readable medium during a first cardiac cycle of a subject, a first imaging sequence is generated for application to a subject. The first imaging sequence has a preparatory pulse and an inversion recovery pulse following the preparatory pulse. First signals emitted from the subject in response to the first imaging sequence are detected, and first image data are generated based on the first signals. During a second cardiac cycle following the first cardiac cycle, a second imaging sequence is generated for application to the subject. The second imaging sequence has a preparatory pulse. Second signals emitted from the subject in response to the second imaging sequence are detected, and second image data are generated based on the second signals.

Abstract: An insulation monitoring electric circuit of an electric-motor controller, includes: a first voltage sampling circuit and a second voltage sampling circuit; the first voltage sampling circuit is connected to an input anode (+VBUS) of a busbar, an input cathode (PGND) of the busbar and a busbar-voltage sampled-signal (HV_VDC) line, and a busbar-voltage sampled-signal (HV_VDC) line is connected to the electric-motor controller; the second voltage sampling circuit is connected to the input anode (+VBUS) of the busbar, the input cathode (PGND) of the busbar and an insulation-voltage sampled signal (HV_VDC) line, and an insulation-voltage sampled signal (HV_VISO) line is connected to the electric-motor controller; and the electric-motor controller is configured to compare a busbar-voltage value gathered by the first voltage sampling circuit and an insulation-voltage value gathered by the second voltage sampling circuit, and when the busbar-voltage value and the insulation-voltage value are different, emit an insul

Abstract: A surface property evaluation method includes a measurement step for acquiring the distribution of impedance in the depth direction of a test piece, and an evaluation step for evaluating the surface treatment state in the depth direction and wherein the evaluation step includes: a step for creating a reference measurement value group by preparing untreated sample, good sample, and sample to be evaluated, and calculating an impedance ratio ?1 at each frequency for the untreated sample and good sample impedances; a step for creating an evaluation measurement value group by calculating an impedance ratio ?2 for the impedances of untreated sample at each frequency relative to the sample to be evaluated impedances; and a step for evaluating the surface treatment state of a sample to be evaluated by comparing a reference measurement value group with the evaluation measurement value group.

Abstract: A downhole tool may comprise a tool body that is a structural support for the downhole tool, an upper arm attached at one end to the tool body, a pad attached at an opposite end of the upper arm, a lower arm attached at one end to a sliding block and attached to the pad at an opposite end of the lower arm, and a passive arm connected to the lower arm and the tool body. A method may comprise disposing a downhole tool into a borehole, applying a force to a passive arm, applying a second force from the passive arm to the lower arm in response to the force applied to the passive arm, and moving the lower arm and the passive arm in a longitudinal direction along an axis of the downhole tool.

Abstract: An insulator leakage current detector, an insulator leakage current detecting system, and a method of monitoring insulator leakage current using the same are provided. An insulator leakage current detector mountable on an insulator string includes a sensor to sense leakage current information of the insulator string; and a device to send a signal including the leakage current information sensed by the sensor.

Abstract: The method comprises the following steps providing a porous sample containing a first fluid; establishing a steady state profile of a second fluid content in the porous sample by applying a first mechanical load, to create a plurality of regions having different second fluid contents in the porous sample; measuring, in each of the plurality of regions, a local saturation in the first fluid or/and in the second fluid; measuring, in each of the plurality of regions, a corresponding local electrical resistivity and/or conductivity; and determining a value of the representative parameter based on the corresponding values of local saturation and of local electrical conductivity and/or resistivity in each of the plurality of regions.

Abstract: A chip testing system including a tray kit, an insertion member mounting apparatus, a testing apparatus, an insertion member detaching apparatus, and a conveying apparatus are provided. The chip tray kit includes a tray, a plurality of chip fixing members, and a plurality of auxiliary insertion members. The chip fixing members are fixed to the tray and are configured to carry a plurality of chips. The insertion member mounting apparatus can fix the auxiliary insertion members to a side of the chip fixing members, and the auxiliary insertion members can limit a movement range of the chips in the chip fixing members. The insertion member detaching apparatus can detach the auxiliary insertion members. When the chips are tested, a pressing assembly connected to a temperature adjusting device and reaching a predetermined temperature correspondingly presses a surface of each of the chips.