Abstract: Provided is a method and device for obtaining internal side and external side insulation resistances of a relay. The method includes: controlling an insulation resistance obtaining circuit to output an AC signal; when both a main relay and a pre-charge relay are switched off, obtaining a first phase shift of the AC signal between two sampling points according to first collected electrical signals; obtaining an internal side insulation resistance of the main relay according to the first collected electrical signals and the first phase shift; controlling the pre-charge relay to be switched on; when the main relay is switched off and the pre-charge relay is switched on, obtaining a second phase shift of the AC signal between the two sampling points according to second collected electrical signals; and obtaining an external side insulation resistance of the main relay according to the second collected electrical signals and the second phase shift.

Abstract: A pulsed magnetic particle imaging system includes a magnetic field generating system that includes at least one magnet, the magnetic field generating system providing a spatially structured magnetic field within an observation region of the magnetic particle imaging system such that the spatially structured magnetic field will have a field-free region (FFR) for an object under observation having a magnetic nanoparticle tracer distribution therein. The pulsed magnetic particle imaging system also includes a pulsed excitation system arranged proximate the observation region, the pulsed excitation system includes an electromagnet and a pulse sequence generator electrically connected to the electromagnet to provide an excitation waveform to the electromagnet, wherein the electromagnet when provided with the excitation waveform generates an excitation magnetic field within the observation region to induce an excitation signal therefrom by at least one of shifting a location or condition of the FFR.

Abstract: The present invention relates to a method of measuring the diffusion coefficient of water in a porous medium. The coefficient is measured using a nuclear magnetic resonance (NMR) technique (2, 3, 4) and the sample (1) has the shape of a hollow cylinder.

Abstract: A current sensor 100 includes: a magnetic core 104 which focuses a magnetic field generated by continuity of a current to be sensed IP; an element 108 which outputs a sensing signal according to an intensity of the magnetic field focused by the magnetic core 104; a circuit 116 which applies a feedback current to a winding 118 based on the sensing signal from the element 108 and balances magnetism; and a coupling circuit 124 which couples supply paths 123, 124 of a power supply 122 to the circuit 116 and an application path 117 of a feedback current to the winding 118 via capacitors C1, C2.

Abstract: A method for checking defects in a lithium ion secondary battery includes primarily charging and degassing the lithium ion secondary battery after manufacture of the secondary battery, secondarily charging and discharging the secondary battery and then measuring one or more of OCVs and IRs of lithium ion secondary battery cells; pressurizing and aging the secondary battery by aging the secondary battery in a state in which a pressure of a designated magnitude or more is applied to the secondary battery, and checking whether or not the secondary battery cells are defective by re-measuring the one or more of OCVs and IRs of the secondary battery cells and then comparing the re-measured one or more of the OCVs and the IRs to the previously measured one or more of the OCVs and the IRs.

Abstract: Embodiments of the invention include a resonant sensing system comprising driving circuitry to generate a drive signal during excitation time periods, a first switch coupled to the driving circuitry, and a sensing device coupled to the driving circuitry via the first switch during the excitation time periods. The sensing device includes beams to receive the drive signal during a first excitation time period that causes the beams to mechanically oscillate and generate a first induced electromotive force (emf) in response to the drive signal. The first switch decouples the sensing device and the driving circuitry during measurement time periods for measurement of the induced emf.

Abstract: A material defect detection device that detects a material defect in a predetermined region of metallic equipment using a magnetic field distribution in the predetermined region measured by a magnetic sensor array including a plurality of magnetic sensors, the material defect detection device including: a processor that calculates a density distribution of magnetic dipoles in the predetermined region based on the magnetic field distribution and calculates a depth distribution of material defect in the predetermined region based on the density distribution of the magnetic dipoles.

Abstract: Aspects of the subject disclosure may include, for example, obtaining a first plurality of circumference measurements, each of the first plurality of circumference measurements corresponding to a first circumference around a limb of a person at a respective one of a plurality of locations of the limb, each of the first plurality of circumference measurements being obtained from a respective one of a plurality of elastic measurement elements that is positioned at a respective one of the locations; determining, based upon the first plurality of circumference measurements, a first geometric profile along a length of the limb; and outputting data representing the first geometric profile. Other embodiments are disclosed.

Abstract: An energy storage unit for a motor vehicle battery is provided, having an energy store, particularly configured as a battery cell module, for storing and delivering electric power. A measuring device measures electrical properties of the energy store. An evaluation unit, connected to the measuring device, ascertains the operational status of the energy store from the measurement results of the measuring device. An indicator unit is connected to the evaluation unit for depicting the operational status of the energy store. By ascertaining and depicting the operational status and not just the state of charge of the energy store, it is possible to dispense with separate complex measurements when fitting the energy store, so that an energy storage unit can be checked quickly and efficiently when fitted into a motor vehicle.

Abstract: A method for operating a battery sensor and a battery sensor, having an acquisition device for capturing a battery parameter and outputting a battery value dependent on the battery parameter, an evaluation circuit determines a corrected battery value from the battery value and from a correction value, a correction value determination device captures an influencing value of an influencing parameter of the correction value. Storing in the correction value determination device a pre-determined relationship between the influencing parameter and a correction factor for at least two value ranges of the influencing parameter.

Abstract: A shield assembly for logging tool sensors includes a single piece cylindrical shield and first and second cylindrical end clamps deployed about opposing axial ends of the cylindrical shield. The cylindrical shield is deployed about a logging sensor disposed on a logging tool collar. At least one of the first and second end clamps includes one or more keys for engaging a corresponding slot in the shield and a corresponding pocket in an outer surface of the tool collar. Engagement of the key with the corresponding slot and the corresponding pocket is operative to prevent relative rotational and relative axial motion between the cylindrical shield, the first and second end clamps, and the tool collar.

Abstract: Induction powered electrical current monitoring, and related devices, apparatuses, systems, and methods are disclosed. An electricity current monitoring device can include an inductive energy transfer medium, an energy storage device, a power management circuit, and a processing circuit. The inductive energy transfer medium can induce an electromotive force to produce electrical energy that can be stored in the energy storage device. A power management circuit can control storage of the electrical energy in the energy storage device and can control release of the electrical energy from the energy storage device. The processing circuit can measure the electrical current in the monitored energy source based on the fluctuating magnetic field generated by the inductive energy transfer medium. The processing circuit is electrically coupled to the power management circuit to be powered using the electrical energy released from the energy storage device.

Abstract: A test device for an electrochemical cell is arranged inside the electrochemical cell in such a way that it is in electrical contact with two current-carrying electrodes of the electrochemical cell. The test device includes a switching device having at least one cathode and one anode partial electrode which are adjacently arranged, but with a space thereinbetween. In an initial state, the switching device is opened such that electrical current cannot flow between the partial electrodes. The switching device is closed in a short-circuit state by bridging the space between the partial electrodes such that an electrical current can flow between the current-carrying electrodes of the electrochemical cell and through the partial electrodes.

Abstract: A method of detecting a cold-boot attack on an integrated circuit, including the steps of: periodically sampling a signal delivered by at least one ring oscillator; and verifying that the proportion of states “1” and of states “0” of the result of the sampling is within a range of values.

Abstract: A locate wire grounding terminal having a body for encapsulating various components of the locate wire grounding terminal, a switch for changing the locate wire grounding terminal between a grounded configuration and an ungrounded configuration, at least one locating terminal in electronic connectivity with the switch and one end of a section of tracer wire and a grounding lug in electronic connectivity with the switch. A locate wire grounding terminal device that includes a printed circuit board that can be incorporated into a locate wire terminal system, a switch attached to the printed circuit board to change the locate wire terminal system between a grounded configuration and an ungrounded configuration, at least one locating terminal attached thereto wherein the at least one locating terminal is in electronic connectivity with the switch and one end of a section of tracer wire.

Abstract: A magnetoresistance assembly can include a substrate and a first GMR element disposed over the substrate, the first GMR element having a bottom surface and top surface. The magnetoresistance assembly can further include a first TMR element disposed over the substrate, the first TMR element having a top surface and a bottom surface, wherein a line perpendicular to and intersecting the top or bottom surface of the first TMR element intersects the first GMR element. The first GMR element and the first TMR element are in electrical communication.

Abstract: A current sensing modular system, which allows sensing the phase current and/or the around-fault or zero-sequence current, having to that end at least a first module having at least one phase current sensor embedded therein and a second module having a zero-sequence current sensor embedded therein. The first module is independent of the second module, both modules being installed directly in the connection elements, i.e., in the connection point between at least one bushing and at least one connector of at least one grid cable.

Abstract: An electron paramagnetic resonance (EPR) apparatus has a main magnet with two pole pieces on either side of an air gap, and at least one EPR probe head adapted for rapid scan (RS) measurements positioned between the pole pieces of a main magnet, and a pair of RS coils. The EPR apparatus further has at least one EPR probe head adapted for continuous wave (CW) signal measurements, positioned between the pole pieces of the main magnet, and a carrier which allows insertion of the RS coils into the air gap between the pole pieces in an operation position and extraction of the RS coils from the air gap to a storage position outside of a CW operating volume. The system allows a quick and secure change of the RS coils, safely and rapidly, by a single user.

Abstract: An interpolated position of an incremental encoder is provided. A first signal and a second signal having a quadrature relationship are received from the incremental encoder. A coarse position of the incremental encoder at a first time is produced using the quadrature relationship between the first signal and the second signal. An arcsine or arccosine value based on the first signal at the first time is determined using a lookup table and a fine position of the incremental encoder is calculated using the determined value. The interpolated position of the incremental encoder, based on both the coarse position and the fine position, is then provided.

Abstract: A method for testing a charging process of an electrically powered motor vehicle having an on-board power system, wherein said on-board power system includes at least one charge connection for connecting the on-board power system to a charging station and is connected to at least one electric power storage device, wherein an adapter having at least one discharge connection is additionally connected to the on-board power system for testing the charging process, wherein electric power for testing the charging process is conducted via the at least one charge connection into the on-board power system, wherein a primary portion of said electric power is discharged again from the on-board power system via the at least one discharge connection of the adapter.