Abstract: An integrated circuit is provided with a voltage sag detector (VSD) within the integrated circuit package. The VSD is coupled to a voltage reference and to the power distribution bus within the integrated circuit. The VSD has an output for indicating when a voltage level on the power distribution bus sags below a voltage level provided by the voltage reference.

Abstract: This instant disclosure provides a device and a method used to measuring a real power transmitted by the power line. The device comprises a detecting unit and a calculating unit, for obtaining the power factor and the real power according to a sensing voltage signal and a sensing current signal. The device is characterized by: the detecting unit having an electric field detector and a magnetic field detector, two electrodes of the electric field detector respectively disposed adjacent to the power wires, the sensing voltage signal being the voltage difference between the two electrodes, two coils with metal cores of the magnetic field detector respectively disposed adjacent to the power wires, the winding directions of the two coils being contrary, the two coils being coupled in series based on the same sensing current direction for obtaining the sensing current signal.

Abstract: Various embodiments efficiently detect the presence of an external capacitor electrically coupled to the output of a voltage regulator by perturbing the voltage output of the voltage regulator while the regulator is in operation and supplying, or ready to supply, regulated voltage to a load, and detecting the reaction of the regulator's output.

Abstract: According to a first aspect of the present disclosure, an electronic device is provided which comprises: a substrate; an integrated circuit; a layer of conductive glue between the substrate and the integrated circuit; at least one first electrode connected to the conductive glue and at least one second electrode connected to the conductive glue; wherein the first electrode and the second electrode are arranged to receive a voltage generator input, such that a capacitance develops between said first electrode and second electrode, wherein at least a part of said capacitance develops through the layer of conductive glue; and wherein the first electrode and the second electrode are arranged to output said capacitance According to a second aspect of the present disclosure, a corresponding method of manufacturing an electronic device is conceived.

Abstract: Methods and systems for measuring a duty cycle of a signal include applying a first branch of an input signal directly to a latch. A delay of a second branch of the input signal is incrementally increased, with the second branch being applied to the latch, until the latch changes its output. A delay, corresponding to the latch's changed output, is divided by a period of the input signal to determine a duty cycle of the input signal.

Abstract: Systems and methods of determining bond wire failures are provided. In particular, data indicative of a first resistance of a first bond wire set associated with a first semiconductor device on a power semiconductor module can be obtained. In addition, data indicative of a second resistance of a second bond wire set associated with a second semiconductor device on the power semiconductor module can be obtained. A bond wire failure can then be determined in the first bond wire set or the second bond wire set based at least in part on the data indicative of the first resistance of the first bond wire set and the data indicative of the second resistance of the second bond wire set.

Abstract: The invention relates a system for providing information about installation quality of load elements (30). Performance of power distribution systems, such as Power-over-Ethernet (PoE) systems, is depending on the overall system installation performance like quality of the connections (10) between power control devices (20) (e.g. PoE switches) and the powered load elements (30) (e.g. luminaires), Cat5/6 cable quality, cable type, length of the cables, aging of the connections, etc. The proposed system is able to provide feedback and to judge system installation performance at t=0 and over time.

Abstract: A connector mating assurance system includes an audible sensor configured to be located in a vicinity of a mating zone for electrical connectors. The audible sensor is configured to detect an audible sound when the electrical connectors are mated. The system includes a connector identification sensor configured to be located in the vicinity of the electrical connectors. The connector identification sensor is configured to identify the presence of the electrical connectors. The system includes a controller connected to the audible sensor and the connector identification sensor. The controller receives connector identification signals from the connector identification sensor and the controller receives audio signals from the audible sensor. The controller processes the connector identification signals and the audio signals for mating assurance.

Abstract: A connector mating assurance system includes a user-worn sensor unit configured to be worn on or near a user's hand. The sensor unit has an audible sensor configured to be located in a vicinity of a mating zone for electrical connectors. The audible sensor is configured to detect an audible sound when the electrical connectors are mated. The system includes a user-worn controller connected to the audible sensor. The controller receives audio signals from the audible sensor, processes the audio signals to determine a connector mating status, and provides feedback to the user relating to the connector mating status.

Abstract: A method and system are disclosed for detecting turn-to-turn and phase-to-phase winding short circuits in an electric motor. The motor is tested at a standstill condition by injecting a current signal into the virtual d-axis of the motor while controlling q-axis current to zero. Steady state feedback current from the motor is measured, and current harmonics are calculated using FFT or peak-to-peak techniques. It is determined that a short circuit is present in the winding if feedback current harmonics higher than a nominal level are detected, where the increased feedback current is an indication that winding inductance has decreased due to a short circuit. Testing at standstill using a small current advantageously prevents the possibility of damaging the motor and avoids inductance variation due to changing rotor position.

Abstract: A system for monitoring an electric power delivery system by obtaining high-frequency electric power system measurements and displaying event information is disclosed herein. The system may use the high-frequency electric power system information to detect traveling waves. The system may generate a display showing fault location on the electric power system, and timing of traveling waves received at locations on the electric power system. The display may include time on one axis and location on another axis. The display may include a waterfall display.

Abstract: A semiconductor test apparatus includes: a tray housing unit configured to house a customer tray loading untested semiconductor chips, secondary semiconductor chips, and non-defective semiconductor chips; a loader configured to locate the untested semiconductor chips supplied from the tray housing unit on a loading set plate and load the untested semiconductor chips onto a test tray; a tester configured to test semiconductor chips loaded on the test tray; an unloader configured to unload semiconductor chips loaded on the test tray, classify the tested semiconductor chips, and locate the classified semiconductor chips on an unloading set plate; and a retest controller configured to transfer the secondary defective semiconductor chips and the non-defective semiconductor chips to the tray housing unit and transfer the first defective semiconductor chips to the loading set plate.

Abstract: Through-silicon vias (TSVs) are tested using a modified integrated circuit test probe array, an electron beam generation device, a beam direction control device and an electron beam detection device. The TSV extends through a silicon substrate with end portions exposed or accessible by contacts disposed on opposing upper and lower surfaces of the substrate. The test probe array includes a test probe that accesses the lower TSV end portion and applies an AC test signal. An electron beam is directed by the beam direction control device onto the upper substrate surface such that a beam portion reflected from the upper TSV end portion is captured by the electron beam detection device. Reflected beam data is then analyzed to verify the TSV is properly formed. Various scan patterns, different test signal frequencies and an optional resistive coating are used to enhance the TSV testing process.

Abstract: To reduce test costs by reducing the number of pattern generators provided to a test apparatus. A test apparatus that tests a device under test and a test method are provided, the test apparatus comprising: a packet transmitting unit that packetizes and transmits, during a test of the device under test, a test pattern to be supplied to the device under test; a packet transferring unit that transfers a packet transmitted by the packet transmitting unit; a packet receiving unit that receives the test pattern transferred via the packet transferring unit; a buffering unit that buffers the test pattern received by the packet receiving unit; and a test signal supply unit that supplies the device under test with a test signal according to the test pattern acquired from the buffering unit.

Abstract: Test circuits located on semiconductor die enable a tester to test a plurality of die/ICs in parallel by inputting both stimulus and response patterns to the plurality of die/ICs. The response patterns from the tester are input to the test circuits along with the output response of the die/IC to be compared. Also disclosed is the use of a response signal encoding scheme whereby the tester transmits response test commands to the test circuits, using a single signal per test circuit, to perform: (1) a compare die/IC output against an expected logic high, (2) a compare die/IC output against an expected logic low, and (3) a mask compare operation. The use of the signal encoding scheme allows functional testing of die and ICs since all response test commands (i.e. 1-3 above) required at each die/IC output can be transmitted to each die/IC output using only a single tester signal connection per die/IC output. In addition to functional testing, scan testing of die and ICs is also possible.

Abstract: A chip is provided that includes an integrated circuit including a plurality of logic elements, wherein the plurality of logic elements is configured to form, in a test mode, a plurality of scan chains. The chip further includes an on-chip signal generator connected with the integrated circuit and configured to provide, in the test mode, a test pattern signal to the plurality of scan chains.

Abstract: A system and method for monitoring the conductivity of a cooling fluid flowing in a fuel cell system on a vehicle including a chassis. The fuel cell system includes a fuel cell stack electrically coupled to a stack bus and a battery electrically coupled to a propulsion bus. The method includes operating the fuel cell system, measuring a first isolation resistance at the first power level, measuring a first stack voltage, and measuring a first battery voltage. The method also includes operating the fuel cell system at a second power level, and measuring a second isolation resistance, measuring a second stack voltage, and measuring a second battery voltage. The method calculates a stack coolant resistance using the first and second isolation resistances, the first and second stack voltages, and the first and second battery voltages, which is then used to calculate the cooling fluid conductivity.

Abstract: A frequency response optimization includes a battery that stores and discharges electric power, a power inverter that uses battery power setpoints to control an amount of the electric power stored or discharged from the battery, and a frequency response controller. The frequency response controller receives a regulation signal from an incentive provider, predicts future values of the regulation signal, and uses the predicted values of the regulation signal to generate the battery power setpoints for the power inverter.

Abstract: An electrical energy storage system includes a battery configured to store and discharge electric power to an energy grid, a power inverter configured to use battery power setpoints to control an amount of the electric power stored or discharged from the battery, and a controller. The controller is configured to generate optimal values for the battery power setpoints as a function of both an estimated amount of battery degradation and an estimated amount of frequency response revenue that will result from the battery power setpoints.

Abstract: Aspects of the present disclosure involve a monitoring system for a plurality of batteries connected in series. In one example, the monitoring system includes a monitoring circuit to be coupled across each of a plurality of distinct contiguous subsets of the batteries as a unit. The monitoring circuit includes at least one test signal generation circuit to generate a test signal and apply the test signal to each subset of the batteries, and at least one response measurement circuit to measure a response of each subset of the batteries to the test signal. The monitoring system also includes a control circuit to identify at least one of the subsets of the batteries as including a failing battery based on the measured response of each subset of the batteries.

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: In one example embodiment, a circuit includes a first sub-circuit configured to generate first data corresponding to a frequency and a duration of overloading of a transistor in the inverter, and a second sub-circuit configured to generate second data corresponding to a rate of rise of a voltage and a peak voltage value of the transistor in the inverter. The first sub-circuit and the second sub-circuit are configured to respectively provide the first data and second data as outputs to a controller for analyzing a manner in which a load coupled to the inverter is driven.

Abstract: A device includes an analog main signal path and a digital control circuit. The digital control circuit determines and provides a digital control signal to the analog main signal path to reduce a gain error of the analog main signal path.

Abstract: A system and method for determining an actual gradient field generated by a magnetic resonance imaging (MRI) system when controlled to produce a prescribed gradient field is provided. The techniques include using the prescribed gradient field, controlling the MRI system to perform a phase encoding including a gradient that is scaled along each direction desired to be measured over a selected number of encoding times and acquiring one-dimensional (1D) data using a prescribed k-space trajectory during the phase encoding. The 1D data is used to determine scaling factors between encoding times that correlate to actual k-space trajectories achieved when controlling the gradient coils to perform the phase encoding based on the desired gradient field and a report is generated that provides a measure of the actual gradient field generated when controlling the MRI system to produce the prescribed gradient field.

Abstract: An ultrahigh resolution magnetic resonance imaging method and apparatus, the method comprises the following steps of: placing a test sample within an action range of a magnetic gradient source and a nano-scale superconducting quantum interference device, applying a static magnetic field on the test sample by a static magnetic source, and applying a nuclear magnetic resonance radio-frequency pulse on the test sample by a radio-frequency source to excite the test sample to cause nuclear magnetic resonance; directly coupling the nano-scale superconducting quantum interference device with the test sample to detect nuclear magnetic resonance spectrum signals generated by the test sample; establishing an image of the test sample according to the detected nuclear magnetic resonance spectrum signals and space distribution information of gradient magnetic fields generated by the magnetic gradient source.

Abstract: The present disclosure relates possible implementations for utilizing energy storage elements in conjunction with a MRI system. Similarly, various associated control mechanisms are discussed. In certain embodiments, one or both of peak power shaving or energy backup may be facilitated by use of the energy storage elements. Certain such implementations may facilitate the use of higher-power MRI systems with an existing electrical infrastructure.

Abstract: Described here are systems and methods for using excited slice profiles to improve the point spread function (“PSF”) of super-resolution slices in SLIDER acquisitions while preserving all of the advantages of the SLIDER technique. The techniques described here may generally be referred to as “Generalized SLIDER” (“g-SLIDER”).

Abstract: According to some aspects, a method of suppressing noise in an environment of a magnetic resonance imaging system is provided. The method comprising estimating a transfer function based on multiple calibration measurements obtained from the environment by at least one primary coil and at least one auxiliary sensor, respectively, estimating noise present in a magnetic resonance signal received by the at least one primary coil based at least in part on the transfer function, and suppressing noise in the magnetic resonance signal using the noise estimate.

Abstract: A testing apparatus for imposing a traveling wave signal on an electric system signal for testing a fault detector is disclosed herein. The fault detector may be configured to simulate a fault at a particular location by controlling the timing of the traveling wave signal. The testing apparatus may be configured to impose multiple traveling wave signals to test the accuracy of the fault location determined by the fault detector. The testing apparatus may be configured to determine the calculation accuracy of the fault detector. The testing apparatus may impose a traveling wave signal on a signal simulating an electrical signal on an electric power delivery system. The testing apparatus may be used to test capabilities of a fault detector of detecting a fault using traveling waves or incremental quantities.

Abstract: Systems and methods are provided for determining a direction of a signal received at an antenna array. An antenna array includes a plurality of antenna elements, including a reference element. A signal combiner element is configured to combine weighted signals from a subset of the plurality of antenna elements to provide a composite output. An adaptive processing component is configured to determine an optimal set of weights for the subset of the plurality of antenna elements. An angle of arrival search component is configured to find a direction of minimum gain given the optimal set of weights.

Abstract: The invention is a system and method for heliostat mirror control. Here, each heliostat mirror generates a low intensity “signal beam”, directed at an angle off from the heliostat mirror's high intensity and sensor blinding “main beam” of reflected solar energy. The low intensity signal beams may be created by reflecting a small portion of the incident solar light at an angle from the main beam, by reflected artificial light, or from lasers shinning onto mirrors from known locations. The signal beams are detected by optical sensors mounted way from the main heliostat receiver focus, and can be used in a closed loop control system to efficiently ensure that individual heliostat mirrors in a heliostat array accurately track sunlight and direct the sunlight to a central receiver. Because heliostat mirrors need not be taken “off sun” for positioning, the system allows heliostat arrays to be run at high efficiency.

Abstract: Methods and apparatuses are provided for controlling a communication device. A first subframe is received from a serving cell and a plurality of subframes is received from a plurality of neighbor cells. A respective time difference of arrival (TDOA) is measured for each of the plurality of subframes based on a time of arrival (TOA) of the first subframe. At least one of the measured TDOAs is transmitted to a location server. The respective TDOAs are measured based on at least one of a cell-specific reference signal (CRS) and a synchronization signal in the plurality of subframes.

Abstract: Method, node, computer program, and computer program product in a wireless communication network, comprising a network communication unit with a medium access control layer (MAC-Layer), said node configured to calculate the Time of Arrival and/or Time of Flight based on a counted time from transmission of a response request message in the medium access control layer of said node to the corresponding arrival of a response to said response request message in the medium access control layer (MAC-Layer) of said node.

Abstract: Embodiments herein disclose a pose detection device for a movable body and a location-based supplemental service providing system. The pose detection device includes a first polarization unit and a second polarization unit positioned to have transmission axis difference values different from each other, wherein the first polarization unit and the second polarization unit receiving light emitted from a polarized light source located beyond and apart from the first polarization unit and the second polarization unit. Further, the pose detection device includes a first illuminometer measures positioned below the first polarization unit and a second illuminometer positioned below the second polarization unit.

Abstract: Various implementations described herein are directed to a device having a housing configured for mounting to a watercraft. The device may include a power interface configured to receive power from a power source. The device may include a network interface configured to receive marine data from a plurality of different data sources. The device may include a sonar interface configured to receive sonar data from a sonar device. The device may include a display interface coupled to the power interface, the network interface, and the sonar interface. The display interface may be configured to receive power from the power interface, receive marine data from the network interface, receive sonar data from the sonar interface, and provide power, marine data, and sonar data to a remote marine display that is separate from the device.

Abstract: A system for providing a personal and portable ranging system that is configured to make a user more aware of the objects surrounding them. The ranging system comprising a sensor unit comprising at least one ranging sensor, a processing unit configured to receive information obtained from the at least one ranging sensor and configured to provide at least one output notification signal, and a notification device configured to provide at least one alert signal in response to the at least one output notification signal. The notification device can provide information regarding objects detected by the ranging system.

Abstract: A system, apparatus, and method for receiving a signal. In one implementation, the system includes a receiver, a correlator, and a range sidelobe envelope generator. The receiver receives the signal. The correlator compresses the signal with a reference signal. The range sidelobe envelope generator generates a range sidelobe envelope function based on the compressed signal.

Abstract: The present invention relates to a radar device for a vehicle which may determine a target as a single target or multiple targets according to a dispersion level of a slope for each reception channel, calculated through a phase difference for each reception channel of a reflection signal and an arrangement interval for each reception channel, and estimate the angle of the target so as to acquire the angle of the target using a small amount of calculations, and a method for estimating the angle of a target using the same.

Abstract: The invention provides an electro-optical distance measuring instrument, which comprises a light projecting optical system for projecting a distance measuring light as emitted from a distance measuring light source on a distance measuring optical axis, and a light receiving optical system for receiving a reflected distance measuring light from an object to be measured and for guiding to a light receiving element, wherein the light projecting optical system and the light receiving optical system are disposed so that a projection optical axis and a light receiving optical axis cross each other, an optical path splitting component for reflecting the distance measuring light to a crossing position of the projection optical axis and the light receiving optical axis and for passing through the reflected distance measuring light is provided, and optical path length adjusting components for correcting an optical path length of the reflected distance measuring light are disposed on the optical path of the reflected di

Abstract: A technology is provided for determining a range of a target using multiple analog ramps. A slow ramp voltage level can be identified that indicates an approximate arrival time for a light pulse to be received as a target reflection after propagating towards the target. A slope number associated with the slow ramp voltage level can be identified, wherein the slope number is an integer ranging from 0 to N. An adjusted slope number can be calculated using the slope number and fast ramp information. A coarse range and a fine range of the target can be determined using the adjusted slope number. The range of the target can be calculated by adding the coarse range and the fine range.

Abstract: The disclosure relates to a laser ranging calibration method and a laser range finder including a line laser generation module, an image capturing module and a processing module. The line laser generation module projects a line laser beam to a first direction from a first position. The image capturing module at a second position captures a ranging image in the first direction. When the ranging image includes a calibration target image of a calibration target having a first width, the processing module calculates a measured width of the calibration target according to a position of a line spot image of a laser spot on the calibration target image, obtains a calibration parameter according to the first width and the measured width, performs range finding according to the laser spot shown in the ranging image, and performs a calibration task using a calibration parameter.

Abstract: Disclosed is a system and method for a hybrid radar system that integrates frequency-modulated continuous wave (FMCW) mode and interferometry mode. The radar works as a time division system that continuously switches between the FMCW mode and interferometry mode. The FMCW mode is responsible for absolute range detection and the interferometry mode takes cares of the weak physiological movement monitoring. The respective accuracies in range detection and displacement measurement complements the advantages of the two radar modes, providing versatile performance. By steering the antenna beam, the proposed radar system becomes an ideal solution for indoor health care, human localization, and human-computer interaction. Objects or human targets with or without stationary clutters can be precisely located. At the same time, the targets' vital signs and gestures can be monitored.

Abstract: The present invention is directed to a method for processing radar signals in a distributed array radar that includes a first airborne platform and at least one second airborne platform. Doppler filtered radar return samples are obtained and a weight value is calculated as a function of first clutter signals and second clutter signals. The weight value is employed in a weight vector that is computed, as well, from a steering vector that need not be matched to the target vector. The weight vector is applied to a signal vector corresponding to the Doppler filtered radar return samples. An open loop feedback is implemented and configured to create beam pattern nulls at angles corresponding to the plurality of first interference signals within each of the Doppler bins without substantially tracking a position or velocity of the first airborne platform or the at least one second airborne platform.

Abstract: A radar apparatus includes a targeting unit that irradiates a radar wave and recognizes a detection subject using a reflected wave thereof. The targeting unit extracts, as a target, a peak that is confirmed to have historical connection over measurement cycles equal to or more than a predetermined targeting threshold, from peaks extracted from a power spectrum generated by frequency analysis. A rainy-weather determining unit determines that weather is rainy when a number of erroneous detections is greater than a predetermined rainy-weather determination threshold. The number of erroneous detections is a number of peaks that have been detected in a previous measurement cycle or earlier by the targeting unit and are not confirmed to have historical connection to a peak detected in a current measurement cycle.

Abstract: A method for determining location information for an airborne target includes synthesizing a cyclic transmit signal, transmitting an electromagnetic beam corresponding to the cyclic transmit signal, providing a plurality of vertically offset return signals corresponding to at least two receive antennas that are vertically offset, down-converting the plurality of vertically offset return signals with the cyclic transmit signal to provide a corresponding plurality of baseband signals, determining magnitude and phase information for each vertically offset return signal as a function of range from the corresponding baseband signal, and determining elevation information for an airborne target from the magnitude and phase information. Azimuthal information for the airborne target may be determined by tracking amplitude variations in the return signal in response to azimuthal rotation of the receive antennas. A corresponding apparatus, system, and computer readable medium are also disclosed herein.

Abstract: A distance measuring apparatus includes a projector configured to project laser beam at a projection angle to an object; a photodetector array in which a plurality of photodetectors are arranged; a condenser lens configured to concentrate, on the photodetector array, the laser beam reflected by the object positioned on a direction of the projection angle; a detector configured to detect an output of at least one of the photodetectors of the photodetector array; and a selector configured to select the photodetector from which the detector receives the output, depending on a distortion of an area on the photodetector array irradiated with the reflected laser beam when the projection angle is large, the area being determined by an angle of incidence of the reflected laser beam to the condenser lens, the angle of incidence being associated with the projection angle.

Abstract: A user equipment (UE) and method of providing local fine timing assistance are generally described. Prior to storing a Global Navigation Satellite System (GNSS)-cellular time relationship in the UE and, when the network is unable to provide fine timing assistance, a GNSS receiver transmits a request to a modem. The modem, in response, periodically or as scheduled transmits a pulse and pulse timing information (PTI) including a pulse transmission time (PTT) based on cellular network time. The receiver determines a GNSS-cellular time relationship and obtains a GNSS satellite positioning signal and GNSS fix using the PTI. For pulses after the initial pulse, the PTI includes a time difference between the PTT and a PTT of the preceding pulse. The receiver determines a time difference between the PTT and GNSS fix. The modem is configured to terminate pulse transmission in response to receiving a termination request from the receiver.

Abstract: An information sharing system for a vehicle includes: an emergency call system installed in the vehicle and operable to determine whether an accident involving the vehicle occurs; a navigation system installed in the vehicle and operable to determine a driving route for a user of the vehicle; a global navigation satellite system (GNSS) signal receiving unit receiving a GNSS signal transmitted from a GNSS satellite; and a GNSS signal distribution unit transmitting the received GNSS signal to the emergency call system and the navigation system.

Abstract: A technology is provided for detecting spoofed satellite signals. An aircraft may be equipped with a top antenna that is adapted to receive satellite signals and a bottom antenna that is adapted to receive terrestrial signals. A signal may be received on the top antenna and the bottom antenna. Relative signal strength between the top antenna and the bottom antenna may be used to differentiate satellite sourced signals from terrestrial sourced signals.

Abstract: A multi-band satellite navigation receiver for carrier and code tracking using a fixed point sigma rho filter with improved stability is described. The receiver simplifies and speeds up the data processing in the filter to adaptively accommodate common information from aggregate bands and obtain the accurate position of the receiver in real time. The filter may utilize a standard deviation function and a cross correlation function while determining adaptive scale factors to ensure that the filter is stable and reliable.