Abstract: An accelerometer has a movable mass suspended above a substrate, and a variable acceleration capacitor supported by the substrate. The movable mass has a mass anchor securing the mass to the substrate, while the acceleration capacitor has both a stationary finger extending from the substrate, and a movable finger extending from the movable mass. The accelerometer also has a variable stress capacitor, which also includes the stress finger, for determining movement of the mass anchor relative to the substrate.

Abstract: A method and system for calibrating a rotational accelerometer. The method includes attaching a rotational accelerometer to be tested to a plate fitted with and second linear accelerometers and vibrating the plate. Angular acceleration measurements from the rotational accelerometer and linear acceleration measurements from the first and second linear accelerometers are obtained during the vibrating. The linear acceleration measurements are converted into angular acceleration values, and data representing, or usable for, a comparison of the angular acceleration measurements from the rotational accelerometer and the converted angular acceleration values is generated.

Abstract: A semiconductor carrier profiling method utilizes a scanning tunneling microscope and shielded probe with an attached spectrum analyzer to measure power loss of a microwave frequency comb generated in a tunneling junction. From this power loss and by utilizing an equivalent circuit or other model, spreading resistance may be determined and carrier density from the spreading resistance. The methodology is non-destructive of the sample and allows scanning across the surface of the sample. By not being destructive, additional analysis methods, like deconvolution, are available for use.

Abstract: An electrical device testing fixture is disclosed. The electrical device testing fixture includes a stationary base, an electrode holder, a negative electrode and a positive electrode, a stopper holder, and a stopper; the stationary base is provided with two through wire mounting holes in which wires are routed; the electrode holder is provided with two separate long slots; the two electrodes are fixed in the two long slots respectively and movable in the slots respectively; an electrical device is connected between the two electrodes; a restoring spring is provided between the stopper and the stopper holder; and the stopper is configured to fix the electrical device. The electrical device testing fixture can address the high cost problem due to the requirement of different testing fixtures corresponding to different models of electrical devices.

Abstract: A water probe alignment system and method for aligning a probe to a chip wafer for testing a chip on the wafer are provided. At least two corners of the probe are adjustable in a same direction in relation to a primary corner of the probe. The alignment approach includes providing a grid of signal pins for corresponding contact pads of the chip under test, determining for each signal pin whether an electrical contact is established to a corresponding contact pad of the chip under contact force, and adjusting a position of each of the at least two corners by a corner individual delta position value with respect to the direction depending on a result of the determining in order to establish an electrical contact between each of the pins and the corresponding contact pads of the chip under test.

Abstract: A device is provided for the isolated measurement of current, comprising a magnetic core that has an opening through which a primary conductor extends, and at least one measurement region that has at least two openings which divide each measurement region into at least three adjacent flux paths. The device additionally comprises a compensator winding that is wound about parts of the core outside of the at least one measurement region, at least two flux paths of the same measurement region, around which at least one exciter winding is wound, as well as at least one measurement winding that is wound about parts of the measurement region. A method is also provided for determining current in an isolated manner using the provided device.

Abstract: Provided is a voltage measuring device capable of increasing the degree of freedom in the design of an RC filter (low-pass filter) while suppressing the withstand voltage limit of a capacitor. The voltage measuring device comprises: at least one divided capacitor group having a plurality of divided capacitors connected in series through measurement nodes and having one end connected to a reference node and the other end connected to a non-reference node; and at least one non-divided capacitor having one end connected to the reference node and the other end connected to a non-reference node to which the divided capacitors are not connected.

Abstract: A control circuit is described herein. The control circuit includes an oscillator and a processor. The oscillator is configured to generate a reference signal. The processor is coupled to the oscillator. The processor is configured to receive a first output current sample, a second output current sample, and a third output current sample, all of an output current. The first output current sample is first-in-time, the second output current sample is second-in-time, and the third output current sample is third-in-time. The processor is further configured to compute a time-derivative of the output current. The processor is further configured to compute a command variable based on the reference signal, a time-derivative of the reference signal, the third output current sample, and the time-derivative of the output current.

Abstract: Software that uses actual, historic building management system (BMS) data and/or machine logic to estimate an amount of energy that would have been consumed (and saved) had the BMS been operated under the control of an energy management system (EMS). The software performs the following steps: (i) receiving first actual BMS information relating to operation of a first set of appliance(s) located in a first building during a first time interval; (ii) selecting a first proposed EMS rule set; and (iii) determining a first contrafactual energy resource use value based, at least in part, on the first actual BMS information, with the first contrafactual use value corresponding to an amount of energy resources that would have been consumed by the first set of appliance(s) if the BMS had operated the first set of appliance(s) under control of the first proposed EMS rule set.

Abstract: A power theft inspection apparatus is provided with: a controlling device configured to open a third switch unit between a power reception unit and a power reception control circuit of a power receiving apparatus at the start of a power theft inspection, then open a first switch unit between a power transmission unit and a power supply unit of a power transmitting apparatus after the opening of the third switch unit, and then close a second switch unit configured to short-circuit the power transmission unit of the power transmitting apparatus after the opening of the first switch unit; and a determining device configured to determine whether or not there is power theft according to a current detected by a first current detecting device configured to detect a current in the power transmission unit of the power transmitting apparatus upon the power theft inspection.

Abstract: A power detector constituted of: a transconductance element arranged to output a rectified detection current, the magnitude thereof arranged to increase exponentially responsive to a linear increase in the amplitude of an input signal; and at least one p-n junction based device, a function of the rectified detection current arranged to flow there through. The output of the power detector is a function of the voltage across the at least one p-n junction based device.

Abstract: An intelligent electronic device is provided including, inter alia, a processing unit configured to calculate energy consumed by at least one load and accumulate the calculated energy in a first volatile memory; the processing unit being configured to iteratively copy the accumulated energy from the first volatile memory to a first non-volatile memory after a first predetermined time period and copy the accumulated energy from the first volatile memory to a second non-violate memory after a second predetermined time period, wherein the first predetermined time period is longer than the second predetermined time period. The processing unit is further configured to copy the accumulated energy from the second non-violate memory to the first volatile memory upon startup or reset of the intelligent electronic device to avoid loss of data.

Abstract: Techniques for controlling an energy storage device to reduce peak power demand at a site are provided. In one embodiment, instantaneous power usage at the site can be monitored, where the instantaneous power usage corresponds to power that is instantaneously imported or exported at a point of common coupling (PCC) between the site and a utility-managed energy grid. A historical power usage value for the site can then be calculated based on the monitored instantaneous power usage, and the historical power usage value can be compared with a target peak value plus a buffer value. If the historical power usage value exceeds the target peak value plus the buffer value, the target peak value can be set to the historical power usage value.

Abstract: There is disclosed an electrical protection slide for mounting in an electrical meter center enclosing an electrically conductive component, the electrical meter center having a front. The electrical protection slide comprises a slope portion having a downward slope toward the front of the electrical meter center and a mating portion about the slope portion and being adapted for holding at least a portion of the slope portion within the electrical meter center above the electrically conductive component. The slope portion of the electrical protection slide provides electrical insulation and a mechanical barrier for the electrically conductive component from external elements falling thereon.

Abstract: The method includes operating the synchronous machine in idle operation; recording a phase voltage measured value of the synchronous machine; ascertaining a phase voltage expected value by allocating stored characteristics map values for the phase voltage, for the exciting current and the recorded rotational speed of the synchronous machine; and comparing the phase voltage expected value to the phase voltage measured value. Also described is a diagnostic device for carrying out this method, as well as a corresponding computer program product.

Abstract: A method and device for sorting grounded electrical conductors according to phase. Different high-current pulsed sequences are applied to each of the electrical conductors of a first three-phase conductor in an electrical power network. Pulsed current sequences applied to the three electrical conductors of the first conductor, seeking an electrical ground, will be detectable on the electrical conductors of each of the conductors in parallel with the electrical conductors of the first conductor. A detector detects a magnetic-pulsed sequence associated with the current-pulsed sequences on the electrical conductors and matches it to one of the corresponding current-pulsed sequences on the electrical conductors of the first three-phase conductor, thereby decoding the sequence to identify the phases of each of the conductors. Each electrical conductor is then tagged with its phase before the conductor network is ungrounded and energized.

Abstract: A kit for non-invasively determining the presence of non-electrically conductive plumbing in a residence includes an electrical resistance measuring device having a main body and a resistance measuring circuit disposed therein and a display for indicating the value of the resistance measured by the resistance measuring circuit. The kit further includes at least two test probes which are in electrical communication with the resistance measuring circuit of the device. In a method for determining the presence of non-electrically conductive plumbing in the residence using the kit, one of the test probes is connected to an exposed portion of electrically conductive piping and the other is connected to a grounded conductor. When a low measured resistance is observed, as indicated by the device, the operator determines that the residence does not have non-electrically conductive plumbing. When a high measured resistance is observed, the operator determines that non-electrically conductive plumbing is present.

Abstract: A position sensor comprises first and second electrodes that generally extend in a first direction and are arranged in a pattern that defines a sensitive area, the second electrodes interleaved with the first electrodes in a second direction. The first electrodes comprise first, second, and third groups of elements, elements in the first, second, and third groups being connected to each other but not to elements in another group. The elements have shapes configured for adjacent elements in the first and second groups to co-extend in the first direction over a first portion of the sensitive area and to provide ratiometric capacitive signals with respect to each other in the first direction, and adjacent elements in the second and third groups to co-extend in the first direction over a second portion of the sensitive area and to provide ratiometric capacitive signals with respect to each other in the first direction.

Abstract: An object identification system includes a guided surface waveguide probe that produces a guided surface wave that has a frequency-dependent illumination area in which one or more object identification tags are powered by the guided surface wave and outside of which other object identification tags are not powered by the guided surface wave; and a receiver at the illumination area, the receiver receiving return signals from the one or more object identification tags located in the illumination area, the return signals emitted by the object identification tags as an automated response to being powered by the guided surface wave.

Abstract: A configurable electronic test system that is adapted for varying test processes and thermal conditions, consisting of a device handler working with multiple testers and a thermal environment module for controlling the thermal condition during test. The test system can be easily expanded by stacking more testers vertically for more test capacity without requiring an increase in floor space.

Abstract: A sump, ejector, or other pump monitor configured to monitor the amperage of electric current power supplied through the pump monitor to a pump and communicate one or more signals regarding the amperage or variations in amperage to a remote signal receiving device which indicate a predicted failure or actual failure of the pump. In various embodiments, the pump monitor operates with a remote pump failure warning system. The remote signal receiving device or remote pump failure warning system provides suitable warnings to one or more user access devices.

Abstract: A multi-function probe wire de-icing apparatus is described. The multi-function probe wire de-icing apparatus may include a multi-function probe wire, a main heater wire collocated with the multi-function probe wire, and a sacrificial wire deposed adjacent to the main heater wire. The sacrificial wire is configured to fail prior to the main heater wire failing.

Abstract: A method for modeling cable loss is described. The method includes receiving a measurement of reverse power and forward power at a radio frequency (RF) generator. The method further includes computing theoretical power delivered to a matching network as a difference between the forward power and the reverse power and calculating a ratio of the reverse power to the forward power to generate an RF power reflection ratio. The method further includes identifying a cable power attenuation fraction based on a frequency of the RF generator and calculating a cable power loss as a function of the RF power reflection ratio, the cable power attenuation fraction, and the theoretical power. The method includes calculating actual power to be delivered to the impedance matching network based on the theoretical power and the cable power loss and sending the calculated actual power to the RF generator to generate an RF signal.

Abstract: Various electrostatic protection testing, monitoring, and human-machine visual interface systems and methods are provided. Embodiments include systems and methods for implementing an automated grounding wrist strap assembly test system and visual interface. Embodiments include a test station interface section, a computer system coupled with the test station interface section, software operable to control the test station and computer system, and a user interface that tracks dates of testing a ground strap or system and generates color coding associated with various status of testing of each tracked strap. Additional embodiments include access control systems that allow or deny access to entryways, access points, equipment stations as well as disabling operation of equipment. Embodiments also include a variety of warning systems that trigger based on pass or fail conditions.

Abstract: The temperature calibration characteristic curve of a semiconductor component can be readily determined by interconnecting the power connections of the semiconductor component with a first current source for a load current, a second current source for a measurement current and a voltmeter for measuring the voltage drop across the power connections. Furthermore, the semiconductor component is connected to a data processing system and heated by the dissipated power at time intervals when the first current source is connected, and the voltage drop across the power or auxiliary connections is measured when the first current source disconnected and the second current source is connected between the intervals after a time duration determined by the thermal main time constant of the semiconductor component. The temperature of the semiconductor component is separately measured and the temperature calibration characteristic curve is obtained by correlating the measured temperature with the voltage drop.

Abstract: Provided herein is a radio frequency probe apparatus including a RF waveguide including a ground electrode and a signal electrode, a register connected to the signal electrode, a RF connector including an outer conductor connected to the ground electrode, an inner conductor connected to the signal electrode, and a dielectric body filling a portion between the outer conductor and the inner conductor, and a single tip probe connected to the signal electrode of the RF waveguide, or the register.

Abstract: Embodiments of the present invention provide enhanced methods of calibrating arbitrary waveform generators using s-parameters, and arbitrary waveform generators calibrated according to those methods. Methods are provided for calibrating a single, non-interleaved channel of an arbitrary waveform generator, calibrating multiple interleaved channels, and calibrating pairs of channels, both interleaved and non-interleaved, to generate differential signals.

Abstract: Roughly described, a method of restricting access of a debug controller to debug architecture on an integrated circuit chip, the debug architecture comprising an access controller, a plurality of peripheral circuits, and a shared hub, the shared hub being accessible by the access controller and the plurality of peripheral circuits, the method comprising: at the access controller, authenticating the debug controller; at the access controller, following authentication, assigning to the debug controller a set of access rights, the set of access rights granting the debug controller partial access to the debug architecture; and after assigning the set of access rights, allowing the debug controller access to the debug architecture as allowed by the set of access rights.

Abstract: A probe card having a configurable structure for exchanging/swapping electronic components for impedance matching is provided. In the probe card, an applied force is exerted on the electronic component so as to make the electronic component electrically connected with at least one conductive contact pad of a supporting unit. The supporting unit is a circuit board or a space transformer. In order to facilitate the exchange or swap of the electronic component, the applied force can be removed. The probe card includes a pressing plate which can be moved between a pressing position and a non-pressing position. The pressing plate has a pressing surface which is contacted with the top end of the electronic component while the pressing plate is in the pressing position. Therefore, the applied force can be generated or removed by changing the positioning of the pressing plate.

Abstract: Probe card transfer units and probe card management apparatuses including the same may be provided. The transfer unit includes a hand part including grippers holding a package and a moving part moving the hand part. Each of the grippers includes at least one locking pin protruding from a holding bar, which extends in a direction perpendicular to the holding bar, to securely hold the package.

Abstract: Approaches for testing phase rotators are provided. A circuit for testing phase rotators includes a compare element including a first input and a second input, wherein the compare element is configured to compare a first phase of a first signal provided at the first input to a second phase of a second signal provided at the second input. The circuit also includes a first test bus connected to the first input and a second test bus connected to the second input.

Abstract: An integrated circuit senses attempts to access security-related data stored in registers connectable into a scan chain when the attempt includes locally and selectively asserting a scan-enable signal at a corresponding branch of the scan-enable tree when the integrated circuit is in a secure functional mode. When such an attempt is detected, the integrated circuit (i) generates a security warning that causes a reset of the security-related data and/or (ii) engages a bypass switch to disconnect the scan chain from the respective output terminal to preclude the security-related data from being shifted out of the IC via the scan chain.

Abstract: The disclosure describes novel methods and apparatuses for accessing test compression architectures (TCA) in a device using either a parallel or serial access technique. The serial access technique may be controlled by a device tester or by a JTAG controller. Further the disclosure provides an approach to access the TCA of a device when the device exists in a daisy-chain arrangement with other devices, such as in a customer's system. Additional embodiments are also provided and described in the disclosure.

Abstract: A cell monitoring apparatus includes a processor and memory arranged to execute code representing a linear time-invariant state transition model and a non-linear observation model are provided to model a rechargeable cell using at least a non-linear open circuit voltage, an internal resistance, a time-invariant distortion voltage across a reactive component block, and a distortion current component constituting an error of measurement of current flowing through the reactive component block. An estimator unit performs extended Kalman filtering in respect of the state transition model and the observation model using the input state data in order to generate output state data. The processor is arranged to evaluate a criterion associated with at least part of the output state data and to generate a control signal in response to evaluation of the criterion.

Abstract: A battery monitor system is provided for plural battery groups. The battery monitor system includes plural monitor modules for monitoring battery voltages of the battery groups and provided with a non-volatile memory for storing monitor data, which includes voltages of the monitor battery, and a monitor controller for communicating with the monitor modules and transmitting command signals to the monitor modules thereby to store the monitor data in the non-volatile memory. The monitor controller causes the non-volatile memory to store the monitor data therein, when communication with the monitor controller is disabled for a predetermined threshold period.

Abstract: A method and apparatus for detecting a missing phase in a 3-phase twelve-pulse autotransformer rectifier unit (ATRU) which, in use, receives a 3-phase input and delivers a nominal DC output on which a common-mode voltage is impressed. At least one of the frequency and amplitude of the common-mode voltage are monitored thereby to determine whether there is a missing phase in the input. The frequency and/or amplitude of the common-mode voltage may also be monitored thereby to determine whether there is a loss of input voltage.

Abstract: An offset compensation method and system of a hall sensor in a motor are provided. The system and method prevent a detection error regarding the position of the rotor of the motor and more accurately measure the speed and location of a rotor by storing the position of when output values of three hall sensors while slowly rotating the rotor by adding control mode for applying a low speed rotating magnetic field to a controller, extracting and storing offsets between each hall sensor and the U-phase position of a stator winding, and then excluding the influence of the offset of a rotor magnet in normal operation mode.

Abstract: An apparatus and a method for the contactless detection of vehicles via one or more magnetometers for measuring the geomagnetic field, in which at least one magnetometer includes a device for measuring the gravitational field.

Abstract: A sensor apparatus having at least one magnet core, on at least one carrier surface, which encompasses at least one soft magnetic material and for which a respective longitudinal center plane, which is oriented perpendicularly to the carrier surface and divides the respective magnet core into two halves having an identical mass, is definable, at least one coil being on, around, and/or adjacent to the at least one magnet core, the at least one magnet core having in its interior sub-regions by which an initiation of a magnetization reversal of the respective magnet core is targetedly locally controllable since a drive energy to be applied for propagation of a magnetic domain wall is elevated. Also described is a manufacturing method for a sensor apparatus having at least one magnet core, and a method for ascertaining a field strength of a magnetic field in at least one spatial direction.

Abstract: In one implementation, a magnetic sensor device used for sensing a static or dynamic magnetic field includes a ring-shaped magnet, a sensor chip arranged in an opening of the ring-shaped magnet, and a leadframe, with the ring-shaped magnet and the sensor chip directly disposed on the leadframe. The sensor chip may further include a carrier with a stepwise configuration having two or more different planes with the ring-shaped magnet and the sensor chip disposed on different planes.

Abstract: A semiconductor device includes a semiconductor element, a semiconductor substrate including a substrate main surface and a recess that recedes from the substrate main surface and houses the semiconductor element, a conductive layer electrically connected to the semiconductor element and formed on the semiconductor substrate, a sealing resin covering the semiconductor element and including a resin main surface that faces in the same direction as the substrate main surface, and spherical conductors electrically connected to the conductive layer and protruding outward from the resin main surface.

Abstract: Device for alternating examination of a measurement object (103) by means of MPI and MRI within a magnetic system is characterized in that the magnetic system has a specified magnetic field profile, which is not temporally variable during the alternating examination, and both magnetic field generating elements (101,102; 201,202; 801a,801b,811,812) generate a magnetic field portion, in the first examination region (104) and in the second examination region (105), which is essential for the MRI operation and for the MPI operation, and in that there is a transport apparatus (106) by means of which the measurement object can be moved out of the first examination region and into the second examination region and/or vice versa. The total space requirement for both modalities is thus reduced and the complexity of an integrally designed hybrid system is minimized.

Abstract: Provided are an atomic magnetometer and an operating method of the same. The atomic magnetometer includes a vapor cell receiving a circularly polarized pump beam and a linearly polarized probe beam and containing an alkali metal vapor, a detector adapted to receive the probe beam passing through the vapor cell to measure magneto-optical rotation of the probe beam, a feedback coil to establish a negative feedback magnetic field signal orthogonal to a first plane defined by traveling directions of the probe beam and the pump beam and provide the negative feedback magnetic field signal to the vapor cell, and a feedback amplifier adapted to provide feedback current to the feedback coil such that the negative feedback magnetic field proportional to a measurement magnetic field is established. The measurement magnetic field of a measurement target provides magneto-optical rotation of the probe beam in the vapor cell.

Abstract: A respiration suppressing member includes a main body of an elastic material which is formed into a shape having a pressurizing portion for pressurizing that portion of the abdomen of a subject under imaging diagnosis by a medical modality which is located below the sternum and between the right and left ribs of the subject.

Abstract: Described embodiments include an apparatus, and a method. An apparatus includes an array of at least two artificially structured electromagnetic unit cells. The at least two artificially structured electromagnetic unit cells are configured to generate a pulse of radiofrequency magnetic field B1 orientated transverse to the quasistatic magnetic field B0 parallel to the z-axis of the bore of a MRI or NMR device by transforming an incident pulse of radiofrequency electromagnetic waves. The generated pulse having magnetic field intensity sufficient to excite a detectable magnetic resonance in magnetically active nuclei located within at least a portion of an examination region located within the bore. The apparatus includes a radiofrequency electromagnetic wave conducting structure configured to distribute a received pulse of radiofrequency electromagnetic waves as an incident pulse of radiofrequency electromagnetic waves to the at least two artificially structured electromagnetic unit cells.

Abstract: MRI apparatus includes an RF coil device, a first radio communication unit, a second radio communication unit, an image reconstruction unit and a judging unit. The RF coil device detects an MR signal, and includes a data saving unit for storing the MR signal. The first radio communication unit wirelessly transmits the MR signal detected by the RF coil device, and the second radio communication unit receives the MR signal from the first radio communication unit. The image reconstruction unit reconstructs image data using the MR signal. The judging unit judges existence of a transmission error in radio communication between the first and second radio communication units. If the transmission error is present, the first radio communication unit wirelessly transmit the MR signal stored in the data saving unit to the second radio communication unit.

Abstract: Described embodiments include a system, apparatus, and method. An apparatus includes an array of at least two groups of at least two artificially structured electromagnetic unit cells. Each group of the at least two groups configured to be respectively linearly arranged with respect to the z-axis of the bore of MRI or NMR device. Each group of the at least two groups of artificially structured electromagnetic unit cells configured to transform an incident pulse of radiofrequency electromagnetic waves into a pulse of radiofrequency magnetic field B1 orientated transverse to a segment of the z-axis and spatially proximate to the group. The apparatus includes a radiofrequency electromagnetic wave conducting structure configured to selectably distribute a received pulse of radiofrequency electromagnetic waves to a group of the at least two groups.

Abstract: A transmit antenna selector includes a control circuit, a body coil signal output interface, a local coil signal output interface, a radio-frequency signal input interface, and a dummy load. The control circuit includes a plurality of diodes. The control circuit electrically connects, according to a control signal and via the plurality of diodes, the radio-frequency signal input interface with the body coil signal output interface, with the local coil signal output interface, or with the dummy load.

Abstract: A gradient magnetic field coil device is provided in which an eddy current magnetic field of an even-ordered component can be reduced. The gradient magnetic field coil device includes a forward coil and a reverse coil which faces the forward coil so as to sandwich a middle surface and through which flows an electric current directed opposite to the forward coil. The forward coil and the reverse coil have a middle region approaching the middle surface and an outside-the-middle region where the distance from the middle surface is greater than the middle region. A line width of coil lines in the middle region is narrower than a line width of coil lines in the outside-the-middle region.

Abstract: Provided is a magnetic resonance imaging (MRI) apparatus. The MRI apparatus includes: a data acquisition unit configured to acquire a first k-space including a first missing line by undersampling an MR signal received from an object at a first time point, acquire a second k-space including a first acquired line corresponding to the first missing line by undersampling an MR signal received from the object at a second time point, and acquire a third k-space including a second acquired line corresponding to the first missing line by undersampling an MR signal received from the object at a third time point; and an image processor configured to interpolate data in the first missing line based on data in the first and second acquired lines.