Abstract: The present invention relates to a field device for determining a process variable and providing a measurement signal indicative of the process variable to a remote location via a two-wire current loop. The field device comprises a measurement device for determining the process variable; a current control device electrically connected in series with the measurement device and controllable by the measurement device to provide the measurement signal to the two-wire current loop; and voltage regulation circuitry electrically connected in series with the current control device and the measurement device for controlling a voltage across the current control device towards a desired voltage by varying a voltage across the voltage regulation circuitry.

Abstract: A circuit and a method for sensing a current flowing from a supply voltage into an electric load are presented. The current sensing circuit comprises a first circuit branch connected between the supply voltage and the electric load, a second circuit branch connected between the supply voltage and ground, and an equalization circuit for equalizing a first voltage drop across a first resistive element and a second voltage drop across a second resistive element and for generating an indication of a current flowing through the second circuit branch.

Abstract: The embodiments described herein relate to an improved circuit technique for sensing current conducting in a power transistor coupled with an input power supply. The circuit includes a bi-directional current sensing circuit using current sensing transistor gate control. The circuit includes a forward current sensing transistor to sense current conducting in the power transistor during forward mode current of the circuit and a reverse boost current sensing transistor to sense current conducting during reverse current mode of the circuit. A level shifter is also provided with complementary outputs to either turn on the forward current sensing transistor or turn off the reverse boost current sensing transistor when the circuit is in forward current mode, or to turn off the forward current sensing transistor and turn on the reverse boost current sensing transistor when the circuit is in reverse current mode.

Abstract: In accordance with one aspect of the present disclosure, a current sensor configured to measure an AC current of a first conductor includes an outer coil having a first portion and a second portion. Each of the first and second portions are disposed about the first conductor passing through a center of the outer coil. The current sensor further includes an inner conductor disposed within the first and second portions of the outer coil and connected to each of the first and second portions of the outer coil.

Abstract: The subject matter described herein is directed to a power monitoring system for managing power in a data center. In one embodiment, the power monitoring system includes: at least one processor, a memory coupled to the at least one processor, wherein the memory includes, a computation module configured to compute at least one of peak power consumption and current power consumption of each power distribution point of a power distribution unit and an analysis module configured to identify the power distribution points which are overloaded or are underutilized based on a policy data.

Abstract: A semidefinite (SDR) programming formulation for state estimation (SE) of nonlinear AC power systems is described. The techniques make use of convex semidefinite relaxation of the original problem to render the process efficiently solvable. In addition, robust techniques are described that are resilient to outlying measurements and/or adversarial cyber-attacks. Further, techniques for SDR-based SE are described in which local control areas solve the centralized SDP-based SE problem in a distributed fashion.

Abstract: Embodiments of an electric power measuring system capable of computing accurate electric power information using a low voltage measuring instrument in a small-scale electric power system are provided. The electric power measuring system may include a first measuring instrument for measuring and detecting a current and a zero-cross point from a distribution line and for generating and outputting current information of the distribution line from the current and the zero-cross point, and a second measuring instrument for computing electric power information of the distribution line according to a voltage thereof and the current information output from the first measuring instrument.

Abstract: A passive intermodulation (“PIM”) distortion test apparatus includes a housing, hammering elements disposed within the housing, each hammering element including a moveable striking member, a strike plate positioned above the hammering elements, where a bottom surface of the strike plate is positioned at a distance above the hammering elements such that the moveable striking members of the hammering elements impact the strike plate when moved into their activated positions, and a retaining member that is configured to hold a device under test on a top surface of the strike plate while a PIM distortion test is performed on the device under test.

Abstract: One embodiment includes and I/O bus including a signal line coupled to a signal source and multiple line switches, each line switch to couple a corresponding I/O port to the signal line. Switch logic coupled to the I/O bus may programmatically switch the multiple line switches to couple at least one of the signal source and measurement circuitry to the respective I/O port.

Abstract: A system includes a bottle, a first wire, a second wire, a current probe and an output line. The bottle holds a dielectric liquid therein. The first wire is disposed longitudinally on the bottle and generates a first oscillating electrical current in response to an electromagnetic wave, wherein the first oscillating electrical current thereby generates a corresponding first oscillating magnetic field. The second wire is disposed in parallel with the first wire on the bottle and generates a second oscillating electrical current in response to the electromagnetic wave, wherein the second oscillating electrical current thereby generating a corresponding second oscillating magnetic field. The current probe is arranged to surround the bottle such that the bottle is rotatable within the current probe or such that the current probe is rotatable around the bottle.

Abstract: Methods, devices, and systems for determining failure of an ultraviolet (UV) sensor are described herein. One device includes a memory, and a processor configured to execute executable instructions stored in the memory to reduce an excitation voltage of a UV sensor until no conduction occurs in the UV sensor, increase, upon no conduction occurring in the UV sensor, the excitation voltage of the UV sensor until a conduction event occurs, compare the excitation voltage at which the conduction event occurs to a reference voltage, and determine whether the UV sensor has failed based on the comparison.

Abstract: A method of inspecting a sensor sheet formed by a roll-to-roll scheme for a touch sensor, the sensor sheet including a roll sheet and a sensor electrode layer thereon, the sensor electrode layer including sensor electrodes running in a prescribed direction, the sensor sheet further including a terminal connected to the sensor electrode layer and alignment marks, the method including: arranging the sensor sheet on an inspection table of an inspection device, the inspection table having an alignment mark and inspection electrodes running in another prescribed direction such that at least one of the alignment marks aligns with the alignment mark on the inspection table and such that the inspection electrodes face the sensor electrodes orthogonally in a plan view and are vertically separated by a dielectric to form capacitances at respective intersections therebetween; measuring the capacitances at the respective intersections; and outputting the measured capacitances as an inspection result.

Abstract: There is provided a fault detecting apparatus for detecting a fault in an electric circuit including connecting circuits and an aggregating circuit. The fault detecting apparatus includes a fault detector that detects a fault when at least one of connecting circuit current detectors detects that a current flows and an aggregating current detector detects that a current does not flow.

Abstract: A storage battery monitoring device includes a pair of measurement lines connected respectively to a pair of voltage detection lines connected respectively to a positive and a negative electrode of a rechargeable battery, a pair of adjustment lines connected respectively to the pair of voltage detection lines in parallel with the measurement lines, a first capacitive element connected between the pair of measurement lines, a second capacitive element connected between the pair of adjustment lines, and a switch connected across the second capacitive element. Capacitance values of the first and second capacitive elements are set such that a voltage between the pair of measurement lines continues changing after closing the switch and then opening the switch after a lapse of a predetermined short-circuit time if the voltage detection line is broken.

Abstract: Method of measuring semiconductor device leakage which includes: providing a semiconductor device powered by a supply voltage and having a circuit block of transistors; providing on the semiconductor device a test circuit providing an input to a counter and a fixed-frequency measurement clock to provide a clock signal to the counter; disconnecting a system clock from the circuit block; receiving by the test circuit the supply voltage as an input; initializing the counter; starting the counter when the supply voltage is at or below a first voltage Vhigh; monitoring a decrease of the supply voltage with time; stopping the counter when the supply voltage is at or below a second voltage Vlow such that Vhigh is greater than Vlow; and reading the counter to provide the semiconductor device leakage metric. Also disclosed is an apparatus and a computer program product.

Abstract: A penetration terminal for connecting the coaxial cables inside and outside of the apparatus thereto is attached on the electric apparatus' frame, and the measurement of a combined capacitance of the antenna and the coaxial cable in the inner side of the apparatus is made possible from the outer side of the apparatus, so that it is possible to perform at any time the determination whether a wiring connection of the antenna mounted in the inner side of the electric apparatus is appropriate.

Abstract: An apparatus for testing a quality of an electrical connection of a test part is disclosed. The apparatus includes a first fixture holding the test part to one side of the electrical connection, a second fixture holding the test part to a second side of the electrical connection, wherein the first fixture and the second fixture apply a twist to the test part, and a electrical test module configured to test an electrical resistance of the electrical connection when the twist is applied.

Abstract: Devices, methods, and systems for localizing a fault on a live cable are described herein. One system includes a wire fault localizer configured to receive current information from a location where direct current is applied to a cable comprising a number of loads, receive additional current information from at least two additional locations on the cable, wherein one of the at least two additional locations is on a source side of the cable and one of the at least two additional locations is on a load side of the cable, determine a fault resistance of the cable based on the received current information and received additional current information, and determine a fault distance on the cable based on the fault resistance.

Abstract: A method of determining the location of a fault within a first inductive part of an electrical circuit, including a voltage source, first inductive part and second inductive part. A shortened circuit created by the fault includes the voltage source, a portion of the first inductive part and the second, connected in series. The fault occurs across first and second points in the first inductive part. The length of first inductive part between a positive terminal and first point is substantially equal to the length of first inductive part between a negative terminal and second point. The voltage source supplies a known voltage Vs when the fault occurs and the second inductive part has a known inductance L2 when the fault occurs. The method takes advantage of the initial transient response of the circuit to determine the inductance of the portion of the first inductive part in the shortened circuit.

Abstract: A circuit for inspecting a semiconductor device includes: the semiconductor device that is an object to be inspected and includes a diode; a protection element that is connected in series with the semiconductor device and includes a protection diode having higher breakdown resistance than the diode; a switch that includes a switching element connected in series with the semiconductor device and the protection element; and a coil that provides a loop path together with the semiconductor device and the protection element when the switching element is turned off. Even when the semiconductor device including the diode is broken, an inspection device is restricted from being damaged.

Abstract: An apparatus for detecting difference in operating characteristics of a main circuit by using a replica circuit is presented. In one exemplary case, a sensed difference in operating characteristics of the two circuits is used to drive a tuning control loop to minimize the sensed difference. In another exemplary case, several replica circuits of the main circuit are used, where each is isolated from one or more operating variables that affect the operating characteristic of the main circuit. Each replica circuit can be used for sensing a different operating characteristic, or, two replica circuits can be combined to sense a same operating characteristic.

Abstract: An electronic device is provided. The electronic device includes a printed circuit board (PCB), an antenna structure, a radio frequency signal transceiving circuit and a testing structure. The antenna structure is disposed on the PCB. The radio frequency signal transceiving circuit is disposed on the PCB, and is connected to the antenna structure through a conductive line. The testing structure includes a testing point and a grounding structure. The testing point is disposed on the conductive line, and the grounding structure is disposed on the PCB.

Abstract: In a sensor output determination apparatus, a converter converts analog outputs of two sensors of a first-phase to two digital signals representing a current of the first-phase, and converts analog outputs of two sensors of a second-phase to two digital signals representing a current of the second-phase. The determination section determines whether the analog outputs of the two sensors of the first-phase are normal based on the two digital signals representing the current of the first-phase, and determines whether the analog outputs of the two sensors of the second-phase are normal based on the two digital signals representing the current of the second-phase. The transmission section transmits one of the two digital signals representing the current of the first-phase, one of the two digital signals representing the current of the second-phase, and a digital signal representing a result of determinations of the determination section, to the outside of the apparatus.

Abstract: A mixed signal testing system capable of testing differently configured units under test (UUT) includes a controller, a test station and an interface system that support multiple UUTs. The test station includes independent sets of channels configured to send signals to and receive signals from each UUT being tested and signal processing subsystems that direct stimulus signals to a respective set of channels and receive signals in response thereto. The signal processing subsystems enable simultaneous and independent directing of stimulus signals through the sets of channels to each UUT and reception of signals from each UUT in response to the stimulus signals. Received signals responsive to stimulus signals provided to a fully functional UUT (with and without induced faults) are used to assess presence or absence of faults in the UUT being tested which may be determined to include one or more faults or be fault-free, i.e., fully functional.

Abstract: Embodiments for diagnosing failure locations in one or more electronic circuits. Embodiments may include generating a plurality of core instances of at least one core, for each electronic circuit, with one or more outputs and compressing the outputs of each instance into primary output pins based upon compression equations. Embodiments may include applying test patterns to the plurality of core instances and identifying failures based upon compressed test patterns received at the primary output pins. Embodiments may include performing fault selection on a single core instance for each failure associated with the plurality of core instances and performing fault simulations on the single core instance for each candidate faults associated with the plurality of core instances. Embodiments may include generating fault signatures for each detected fault based upon the instances associated with each detected fault and analyzing each fault signature to determine failure locations.

Abstract: One example embodiment includes a circuit system. The system includes a wave-pipelined combinational logic circuit comprising at least one logic gate between an input node and at least one output node and configured to perform logic operations on a data sequence received at the input node. The system also includes a scan path connected to the input node and comprising at least one delay element configured to propagate the data sequence from the input to a scan path output to capture values of the data sequence provided to the wave-pipelined combinational logic circuit as a serial data stream. The system also includes a scan point device configured to deliver one of input data and scan data as the data sequence to the wave-pipelined combinational logic circuit and to the scan path via the input node in a respective one of a normal operating mode and a scan mode.

Abstract: Generating a unique die identifier for an electronic chip including placing the electronic chip in an identifier generation state, wherein the electronic chip comprises a set of test circuits, wherein each of the set of test circuits is attached to a corresponding component on the electronic chip; obtaining an ordered list of race pairs of the set of test circuits; for each race pair in the ordered list of race pairs of the set of test circuits: selecting the race pair of test circuits; executing a race between the selected race pair; and adding an element to the unique die identifier based on an outcome of the executed race; and returning the electronic chip to an operational state.

Abstract: Embedded processor-based self-test and diagnosis using the compressed test data is described for ICs having on-chip memory. Techniques for compressing the test data before the compressed test data is transferred to a device under test (DUT) are also described. A modified LZ77 algorithm can be used to compress strings of test data in which don't care bits are handled by assigning a value to the don't care bits according to a longest match in the window as the data is being encoded. The compressed test data can be decompressed at the DUT using a software program transferred by the automated test equipment (ATE) to the DUT with the compressed test data. Decompression and diagnostics can be carried out at the DUT using an embedded processor and the on-chip memory. Results from the diagnostics can be read by the ATE.

Abstract: Disclosed herein are various systems and methods for monitoring the health of a circuit breaker. In various embodiments, a system may receive a voltage measurement across a trip coil assembly associated with a circuit breaker. The system may further receive a current measurement through the trip coil assembly. A plurality of transition points may be identified based on at least one of the voltage measurement and the current measurement, the plurality of transition points corresponding to at least one of a mechanical characteristic and an electrical characteristic of the circuit breaker during a trip event. A predictive analysis may be performed based at least in part on the plurality of transition points. An indication of the predictive health may be displayed.

Abstract: A ZSI testing apparatus includes a fault generation circuit, a plurality of cable assemblies coupled to the fault generation circuit, wherein the cable assemblies are structured to be selectively coupled to selected circuit interrupters, a human machine interface, and a controller coupled. The controller is configured to: (i) selectively cause a fault current to be provided to a number of the cable assemblies, (ii) receive an input from each circuit interrupter that is coupled to one of the cable assemblies, each input being indicative of a trip signal output of the circuit interrupter, (iii) determine based on the received inputs (a) that an error has occurred with respect to operation of the circuit interrupters and (b) a recommendation for fixing the error, and (iv) cause an output indicative of the error and the recommendation to be provided on the human machine interface.

Abstract: An interconnection evaluation system according to the present disclosure includes a switchboard including at least one endpoint, at least one endpoint contact tester configured to transmit a digital input signal obtained from each endpoint, an automation tester configured to output a preset digital output signal to the switchboard, and to generate interconnection information at each endpoint by reflecting the digital output signal and digital input signal, and an interface unit configured to generate a switchboard status information of switchboard by reflecting the interconnection information.

Abstract: A method for performing a diagnostic test of an alternator, a test arrangement and a vehicle are provided. The method may include running an engine, providing a signal representative of a pre-determined environmental condition to the alternator, providing an output voltage and output current to a battery based on the pre-determined environmental condition, and determining a battery voltage. The method may also include comparing the determined battery voltage with a pre-defined reference-voltage representative of the pre-determined environmental condition and outputting an approved test result if the difference between the determined battery voltage and the pre-defined reference voltage falls within a predetermined range.

Abstract: This invention pertains to determining the proper discharge level of lithium sulfur, as well as to determine the state of charge and remaining capacity of battery cells. In particular, this invention provides for a method for determining the charge and/or discharge level of a lithium sulfur cell. Also, this invention provides for a method for determining the capacity of a battery cell charge and/or discharge level of lithium sulfur cell. Further, this invention provides a method for determining the impedance of a lithium sulfur battery cell.

Abstract: A deterioration detecting apparatus includes: a capacitor that is connected to an insulated electric power source, and is charged and discharged; a voltage detecting unit that detects a voltage of the capacitor; and a deterioration detecting unit that detects a deterioration in an insulating resistor of the electric power source on the basis of the voltage of the capacitor charged through a charging path for detecting a deterioration in the insulating resistor of the electric power source, and the voltage of the capacitor during discharging.

Abstract: Systems and methods for assessing voltage threshold detection circuitry of individual battery cells within a battery pack supplying power to a vehicle are disclosed. One example system comprises, a plurality of battery cells within a battery pack, a plurality of voltage threshold detecting circuits detecting voltage of the plurality of battery cells, a voltage of a first battery cell of the plurality of battery cells coupled to a first voltage threshold detecting circuit of the plurality of voltage threshold detecting circuits, and a network that selectively couples a second battery cell to the first voltage detecting circuit while the first battery cell is coupled to the first voltage detecting circuit.

Abstract: A method applied into an electronic device and capable of measuring at least one resistance parameter includes: launching a program/application on the electronic device; and using the program/application to measure the at least one resistance parameter that is at least associated with a battery cell connected to and used for providing power to the electronic device.

Abstract: System and methods for estimating a life of a battery pack are presented. In certain embodiments, a method for estimating a life of a battery pack may include generating cell-level test data that includes measured parameters a of battery cell included in the battery pack in response to a plurality of test conditions. One or more first thermal response parameters associated with the battery cells of the battery pack may be determined. A battery cell aging model may be generated based, at least in part, on the cell-level test data and the one or more first thermal response parameters. Second thermal response parameters associated with the battery pack may be determined, and an estimated life of the battery pack may be determined based, at least in part, on the battery cell aging model and the second thermal response parameters.

Abstract: A performance deterioration detecting apparatus configured to detect a performance deterioration start state of an energy storage device. The performance deterioration start state is an initial state of deterioration in performance of the energy storage device. The apparatus includes a performance deterioration determiner configured to determine that the energy storage device is in the performance deterioration start state based on a displacement of peak position in a capacity-voltage property of the energy storage device with time. The capacity-voltage property indicates a relation between a capacity variation amount (dQ/dV) and a voltage (V).

Abstract: A method of diagnosing a fault by using impedance of an output terminal of a power supply device for an environmentally-friendly vehicle is provided. The method estimates impedance of the output terminal of the power supply device and diagnoses a fault by using the estimated impedance, thereby preventing an auxiliary battery from being discharged. Whether or not the fault is generated according to the impedance when the estimated impedance exceeds a reference value is determined.

Abstract: Magnetic sensor system including an assembly comprising first, second, and third scalar point-sensor magnetometers being fixedly mounted with respect to one another such that the position of each magnetometer's axis is invariable with respect to the other magnetometers' axes. When the sensor assembly is in operation, each magnetometer's axis forms an angle with ambient magnetic field lines. Each magnetometer has an operating range defined with respect to a range of values of the angle formed by its axis and the ambient magnetic field. The magnetometers are positioned such that at least one of magnetometers is within its operating range at any point in time. Each magnetometer has an output signal. Computer processor determines which of the output signals is to be used any particular point in time in the sensing of local variations in the ambient magnetic field. Method of operation of the magnetic sensor system/assembly is disclosed.

Abstract: A vertical Hall sensor, a Hall sensor module, and a method for manufacturing the same are provided. By applying a trench structure inside a substrate with respect to a ground terminal, a directional component parallel to surface of the substrate is maximized with respect to a current flow to detect the magnetic field with improved sensitivity.

Abstract: A radiofrequency antenna has a plurality of channels. A Q-value calculating unit computes reflected signals of the plurality of channels of the radiofrequency antenna, respectively, in a case where transmission signals as electrical signals are simultaneously supplied to the plurality of channels of the radiofrequency antenna, also including a signal obtained when the transmission signal supplied to one channel of the plurality of channels is reflected from another channel, and computes a Q value of the radiofrequency antenna using the reflected signal. An SAR calculating unit calculates a specific absorption rate (SAR) using the Q value.

Abstract: The present invention is to provide a structure that can effectively reduce quench in an open superconducting magnet. In order to do so, a pair of superconducting magnets is respectively provided with a primary coil, a shield coil to suppress a leakage magnetic field of the primary coil, and a coil bobbin. The coil bobbin has a cylindrical part on which the primary coil is wound, a ring-shaped end plate on which the inner periphery part is fixed to an end of the imaging space side of the cylindrical part, and a support member preventing the outer periphery part of the ring-shaped end plate from being displaced on the imaging space side. Hence, deformation of the end plate is suppressed to prevent deformation of the primary coil. This can reduce quench caused by the deformation of the primary coil.

Abstract: A coil arrangement for a magnetic resonance tomography device includes at least two antennas connected in parallel to one another for RF signals and connected in series with one another for direct current signals.

Abstract: A magnetic resonance coil arrangement for a magnetic resonance device includes at least two coil elements that may be read and/or controlled via an amplifier, and a matching circuit for power and/or noise matching between the at least two coil elements and the amplifier. Components of the matching circuit are dimensioned for wideband matching to a frequency band. The frequency band is limited by outermost relevant coupling modes that are displaced from the resonant frequency. The coupling modes occur due to the interaction of a coil element with at least one adjacent coil element.

Abstract: MRI systems with a new concept and hardware modality configured for parallel transmit, receive, and shim to address B0 and B1 inhomogeneity, both of which increase with field strength. This invention benefits from a number of advantages over existing technologies: it can save valuable space within the MRI magnet bore, largely reduce the manufacturing cost of MRI scanners, and avoid the electromagnetic interference issue associated with existing technologies.

Abstract: An implantable parametric circuit enables local signal amplification and wireless transmission of RF signals in connection with magnetic resonance imaging systems. The parametric circuit detects RF signal detected during magnetic resonance imaging procedure, amplifies the detected RF signal, and transmits the amplified RF signal in a wireless manner to an external pick-up coil. The parametric amplifier is also configured to use another RF signal generated by an external source as the primary power source. As a result, implanted or catheter coils could be used as a wireless signal transducer without the need for a battery or a power connection.

Abstract: A magnetic resonance imaging configuration and methodology to straighten and otherwise homogenize the field lines in the imaging portion, creating improved image quality. Through use of calibrated corrective coils, magnetic field lines can be manipulated to improve uniformity and image quality. Additionally, when the apparatus is composed of non-ferromagnetic materials, field strengths can be increased to overcome limitations of Iron-based systems such as by use of superconductivity. A patient positioning apparatus and methodology allows multi-positioning of a patient within the calibrated and more uniform magnetic field lines.

Abstract: In a PET (Positron Emission Tomography)-MRI (Magnetic Resonance Imaging) apparatus of an embodiment, a transmitting radio frequency coil applies a radio frequency magnetic field on a subject placed in a static magnetic field. A detector is formed in a ring shape, disposed on a side adjacent to an outer circumference of the transmitting radio frequency coil, includes at least two PET detectors disposed with a space therebetween in an axial direction of a bore so as to interpose the magnetic field center of the static magnetic field therebetween, and detects gamma rays emitted from positron emitting radionuclides injected into the subject. Radio frequency shields are each formed in an approximately cylindrical shape, disposed between the transmitting radio frequency coil and the detector, and shield the radio frequency magnetic field generated by the transmitting radio frequency coil.

Abstract: An MRI device that reduces radio-frequency (RF) interference and the effect of the MRI's magnet, within an active RF-magnetic environment. The device relies on a shield. The device includes a uniform non-fringing magnetic field resonance device (UNF-MRD), an RF shielding means either embedded within or in connection with the UNF-MRD for providing the UNF-MRD a radio interference immunity (RII) from RF-electromagnetic environment surrounding the same.