For Fault Location Patents (Class 324/512)
  • Patent number: 10720468
    Abstract: Methods and apparatus for use in the manufacture of a display device including pixels. Each pixel includes a plurality of sub-pixels, each sub-pixel configured to provide light of a given wavelength. The method may include: performing, using a pick up tool (PUT), a first placement cycle comprising picking up first light emitting diode (LED) dies, and placing a first LED die on a substrate of the display device at a location corresponding to a sub-pixel the display device. The method further includes performing one or more subsequent placement cycles comprising picking up a second LED die, and placing the second LED die on the substrate of the display device at a second location corresponding to the sub-pixel of the display device. Multiple first and second LED dies may be picked and placed during each placement cycle to populate each pixel of the display device to provide redundancy of LED dies at each sub-pixel.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: July 21, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Patrick Joseph Hughes, Vincent Brennan, Joseph O'Keeffe, Christopher Percival, William Padraic Henry, Tilman Zehender
  • Patent number: 10690712
    Abstract: A method for detecting soft faults in a transmission line includes the steps of: acquiring a time-domain reflectogram, calculating the integral of the time-domain reflectogram, selecting, in the integral, three samples P1, P2, P3, calculating a first distance equal to the difference in absolute value between the value of the second sample P2 and the value of the first sample P1 or of the third sample P3, calculating a second distance equal to the difference in absolute value between the value of the first sample P1 and of the third sample P3, performing a first comparison of the first distance to the second distance weighted by a weighting coefficient ?, deducing from the result of the first comparison information on the existence of a soft fault.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: June 23, 2020
    Assignee: COMMISSARIAT A'LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Luca Incarbone, Miguel Gallego Roman
  • Patent number: 10691094
    Abstract: A technique for operating a power subsystem includes determining a respective power status of power devices in the power subsystem. The power devices include a first power device and a second power device that derives power from the first power device. Respective visual indicators of the first and second power devices are controlled to uniquely indicate which of the first and second power devices have an associated fault based on the respective power status of the power devices.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: June 23, 2020
    Assignee: International Business Machines Corporation
    Inventors: Brent W. Yardley, James M. Fox, William Fast, Jr.
  • Patent number: 10684319
    Abstract: Embodiments herein discuss tuning a testing apparatus to better match the input response of a target system in which a cable will be used. For example, conductors in the cable may have a different skew depending on the system in which they are used. The testing apparatus may be tuned using frequency information regarding the type of signals that will be driven on the cable when installed in the target system. In one embodiment, the testing apparatus adjusts a testing cycle refresh rate for generating a testing signal which changes the frequency content of the testing signal. Using the adjusted testing cycle refresh rate results in the driver outputting a testing signal that better reflects the actual signals that will be transmitted on the cable in the target system.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: June 16, 2020
    Assignee: International Business Machines Corporation
    Inventors: Layne A. Berge, Benjamin A. Fox, Wesley D. Martin, David W. Siljenberg, George R. Zettles, IV
  • Patent number: 10570621
    Abstract: A membrane 10 is a geomembrane 10, which takes the form of a non-conductive sheet 11. A conductive layer 13 is printed on to the sheet 11, in this instance in a geometric pattern of a rectangular grid. The lines of the grid 13 are conductive and connected to each other, with non-conductive gaps 15 disposed between the grid lines. Accordingly, a conductive linear network is formed, which has the requisite conductivity for leak detection.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: February 25, 2020
    Assignee: Sensor (UK) Ltd.
    Inventor: Jon Crowther
  • Patent number: 10488487
    Abstract: A system and method that provide a means to overcome errors in determining the source of an electromagnetic event due to reflection, absorption and scattering of the electromagnetic field due to metallic parts of the electric equipment.
    Type: Grant
    Filed: March 13, 2016
    Date of Patent: November 26, 2019
    Assignee: PDP-TECHNOLOGIES LTD.
    Inventors: Harel Primack, Moti Itzkovich
  • Patent number: 10489520
    Abstract: Disclosed herein is a method and apparatus for injecting a fault and analyzing fault tolerance. The fault tolerance analysis apparatus extracts design information from a design. The fault tolerance analysis apparatus may inject a fault into a simulation of the design based on the extracted design information and parameters, and analyzes an influence of the fault on the simulation. Accordingly, in accordance with the fault tolerance analysis apparatus, fault tolerance for the fault injected into the simulation is analyzed, and the effect of the fault tolerance mechanism provided in the design is analyzed.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: November 26, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Yong-Cheol Cho, Young-Su Kwon
  • Patent number: 10380809
    Abstract: A fault monitoring system for an aircraft includes a processor having a fault diagnosis algorithm, a memory connected to the processor, a plurality of sensors located at selected nodes in an electrical network of the aircraft and connected to the processor, and a data collection algorithm in one of the processor or the plurality of sensors. Each sensor is configured to continuously monitor voltage and current of the electrical network at its selected node and to transmit data representative of the monitored voltage and current to the processor. Upon the occurrence of a fault event, the data collection algorithm selects a subset of the data related to the fault event and at least one sensor transmits a selected subset of the data to one of the processor or the memory.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: August 13, 2019
    Assignee: GE AVIATION SYSTEMS LLC
    Inventor: Frazer Leslie Pereira
  • Patent number: 10365314
    Abstract: Techniques are described for a method for detecting a fault. The method includes receiving, by a receiving electronic device, via a differential pair transmission line, from a transmitting electronic device, an electrical signal. The method further includes converting, by a receiving (Rx) serializer/deserializer (SerDes) operating at the receiving electronic device, the received electrical signal into a received digital electrical signal. The method further includes, determining, by one or more processors, an electrical signature of the received electrical signal from the received digital electrical signal when the received electrical signal is received by the receiving electronic device. The method further includes determining, by the one or more processors, based on the electrical signature, a position of a fault between the receiving electronic device and the transmitting electronic device. The fault causes the received electrical signal to be different than the transmitted electrical signal.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: July 30, 2019
    Assignee: Juniper Networks, Inc.
    Inventors: David P. Chengson, Ranjeeth Doppalapudi
  • Patent number: 10359455
    Abstract: In an electric network (1) which comprises an upstream supply (2) and at least two downstream outlets, the supply and the outlets are each provided with a sensor (6) for measuring an extensive electric quantity and each sensor conducts, in a synchronous way with the other sensors, a measurement of this quantity depending on a parameter. This method comprises at least N measurements of the value on the upstream supply and on each downstream outlet conducted for different values of the parameter p. Then, the relationship between the measurements is formalized, for each value of the parameter p with the equation: M ? ( p j ) = ? i = 1 N ? a i ? m i ? ( p j ) A system with N equations and N unknowns is generated, the unknowns being the gains ai, the system of equations is solved, by calculating each gain, and the gains are controlled. If all the gains are equal to 1, it is considered that no sensor has conducted a faulty measurement.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: July 23, 2019
    Assignee: SCHNEIDER ELECTRIC INDUSTRIES SAS
    Inventors: Sylvain Clot, Philippe Deschamps, Christophe Ligeret
  • Patent number: 10310480
    Abstract: Detection of which generators are connected using a common, isolated sub-grid using information from intelligent electronic devices (IEDs) in communication with each generator is disclosed herein. Each IED receives rotor position information from a rotor position detection device of the generator. Each IED may then calculate rotor speed, information of the generator and transmit such information to a central IED. The central IED uses the rotor speed information to determine which generators are connected to a common, isolated sub-grid. The central IED may further use rotor position, rotor speed, and rate-of-change-of-speed information either calculated at the central IED or transmitted from the IEDs.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: June 4, 2019
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventor: Scott M. Manson
  • Patent number: 10228409
    Abstract: The present disclosure relates to calculating a fault location in an electric power transmission system based on traveling waves. In one embodiment, a system consistent with the present disclosure may be configured to detect a fault in an electric power transmission system. The system may include a traveling wave detection subsystem configured to detect and measure traveling waves on a transmission line and a fault location estimation subsystem. The fault location estimation subsystem may receive from the traveling wave detection subsystem a first plurality of traveling waves on the transmission line generated during a reference event. The fault location estimation subsystem may receive from the traveling wave detection subsystem a second plurality of traveling waves generated during an unplanned event. An unmatched traveling wave in the second plurality of waves may be detected and a location of the unplanned event based on the unmatched traveling wave.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: March 12, 2019
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Edmund O. Schweitzer, III, Mangapathirao Venkata Mynam, Armando Guzman-Casillas
  • Patent number: 10156602
    Abstract: A system for diagnosing integrity of an electrical conductor-carrying system can include an electrical conductor-carrying network having a number of electrical conductor-carrying devices mechanically coupled to each other, where at least a portion of the electrical conductor-carrying network is made of electrically conductive material. The system can also include a number of sensor modules coupled to the electrical conductor-carrying network. The system can further include a control unit communicably coupled to the sensor modules. The sensor modules can measure at least one impedance in the electrical conductor-carrying devices of the electrical conductor-carrying network.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: December 18, 2018
    Assignee: Cooper Technologies Company
    Inventors: Jesse Wade Taylor, Joseph Michael Manahan
  • Patent number: 10114395
    Abstract: A knowledge base contains logical rules on electric power data and associated information. At least one determinant is constructed, without activity by a human user, from data that is descriptive of electricity conveyed through at least one power monitor. A determination is made as to whether any of the logical rules correspond with the determinant. Information associated with the logical rules that correspond with the determinant is provided.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: October 30, 2018
    Assignee: Electronic Systems Protection, Inc.
    Inventors: Robert A Dawley, Richard J Billingsley, David Perrotta
  • Patent number: 10102783
    Abstract: Embodiments of the invention provide an array substrate and a detecting method for an array substrate. The array substrate comprises a plurality of signal lines and a repairing line intersecting with and isolated from the signal lines. The detecting method comprises applying a first detection signal to the plurality of signal lines; and applying a second detection signal different from the first detection signal to the repairing line, in the case that the first detection signal is applied to the plurality of signal lines.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: October 16, 2018
    Assignees: BOE Technology Group Co., Ltd., Beijing BOE Display Technology Co., Ltd.
    Inventor: Xiaoping Huang
  • Patent number: 10073131
    Abstract: An apparatus for evaluating an electrical insulator includes: a frame having a base and a pair of spaced-apart resilient arms each having a distal end; and a flexible probe disposed between the arms, the flexible probe being generally U-shaped and having a pair of distal ends, each distal end of the probe being connected to a respective distal end of one of the arms.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: September 11, 2018
    Assignee: ELECTRIC POWER RESEARCH INSTITUTE, INC.
    Inventors: Andrew John Phillips, J. Mark Major, Robert Carlton Lynch, Lester Ray Harrell
  • Patent number: 10020234
    Abstract: A method for fabricating a substrate includes forming a first substrate including a thin film transistor array, and inspecting a first surface of an inspecting device, wherein inspecting the first surface of the inspection device includes: generating first measurement data by detecting a first measurement light that is parallel to a surface of an inspection region in the first surface, generating second measurement data by detecting a second measurement light that is parallel to the surface of the inspection region, and inspecting a state of a surface of the inspection region by comparing the first measurement data with the second measurement data.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: July 10, 2018
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SAMSUNG DISPLAY CO., LTD.
    Inventors: Young-Jin Noh, Jung-Sub Lee, Sung-Mo Gu
  • Patent number: 9915932
    Abstract: Systems and methods are provided for monitoring equipment in a semiconductor manufacturing facility. A processing device maintains baseline measurement record generated from measurements performed by a plurality of tools over a first time range. A measurement record is received, the measurement record corresponding to a measurement performed on a wafer, the wafer having been processed by a first tool of the plurality of tools. The measurement record is stored in a drift candidate table corresponding to a second time range. A determination is made as to whether the measurement record satisfy a set of excursion rules in view of the drift candidate table, and, in response to the determination, the measurement record is stored in an alert table.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: March 13, 2018
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Paul Alexander Llanos, Roger Steele Cornell
  • Patent number: 9841456
    Abstract: Methods and arrangements for localizing an outage in a power grid. An outage is detected in a power grid, the power grid including interconnected nodes. At least one candidate network topology (in the power grid) with respect to the outage is determined, and power consumption information and measured voltages relative to the nodes in the power grid are received. Voltage at a plurality of the nodes in the power grid is estimated based on the received power consumption information and on the at least one candidate network topology, and a location of the outage is estimated, based on the estimated node voltages and measured voltages. Other variants and embodiments are broadly contemplated herein.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: December 12, 2017
    Assignee: International Business Machines Corporation
    Inventors: Chumki Basu, Kaushik Das, Ulrich A. Finkler, Jagabondhu Hazra, Ashok Pon Kumar, Devasenapathi Periagraharam Seetharamakrishnan, Amith Singhee
  • Patent number: 9830626
    Abstract: A method, apparatus and computer program product for providing pre-calculated performance simulation is presented. Performance simulations for a storage system are provided by selecting a subset of system configuration options from a large set of system configuration options. Simulation results for the subset of system configuration options are pre-calculated. The simulation results for the subset of system configuration options are loaded on a portable device. System configuration requirements for a customer are received and at least one system configuration option is selected from the subset of system configuration options based on the simulation results and the system configuration requirements for a customer.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: November 28, 2017
    Assignee: EMC IP HOLDING COMPANY LLC
    Inventors: Ophir Aharoni, Gil Ratsaby, Sergey Rytenkov, Dan Aharoni, Hagay Dagan
  • Patent number: 9746511
    Abstract: Example implementations described herein are directed to detection of anomalous events and locations on the transmission power system using phasor management unit (PMU) data, which provides information to grid operators for online decision support. From the high-resolution time synchronized PMU data, the transient abnormal events can be monitored and locations can be disclosed to operators for remedy actions. Utilization of PMU information for such decision support compliments operation practices relying on supervisory control and data acquisition (SCADA) measurements at much lower data resolution. Accurate identification of event locations can further advise grid operators the root cause of disturbances and illuminate possible cascading failures. Implementations of the proposed technology may improve the resilience and reliability of the transmission power systems.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: August 29, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Alex Wang, Hsiu-Khuern Tang, Bo Yang, Jun Yamazaki
  • Patent number: 9490184
    Abstract: The light-emitting device has a plurality of light-emitting elements that is mounted on one or more wiring patterns on a substrate. A new light-emitting element that replaces a defective element is mounted on the same wiring pattern on which the defective element is mounted. The defective element or a trace that remains alter removal of the defective element is sealed by a same sealing member by which the new light-emitting element is sealed.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: November 8, 2016
    Assignee: NICHIA CORPORATION
    Inventor: Tadaaki Miyata
  • Patent number: 9488495
    Abstract: A system, method, device and non-transitory computer-readable storage medium, for identifying connectives in electrical networks are provided. The system has a first current sensor and a first clock for detecting events defined as changes in a magnitude of a passive electric current circulating through an electrical load point, and the time between events; a second current sensor and a second clock for detecting events defined as changes in a magnitude of a passive electric current circulating through a distribution line and/or through a supply point connected thereto, and the time between event; and a processor and a memory to compare the time between the events detected by the first current sensor an first clock with the ones detected by the second event current sensor and second clock, to determine at which distribution line the load point is connected to.
    Type: Grant
    Filed: December 13, 2014
    Date of Patent: November 8, 2016
    Assignee: ARIADNA INSTRUMENTS, S.L.
    Inventor: Haritz Zubia Urrutia
  • Patent number: 9465070
    Abstract: An electronic device and a detection method thereof for detecting an appliance are provided herein. The detection method includes: selectively providing a first test load to connect with the appliance or providing a first test signal to the appliance; detecting a first voltage/current value of the appliance when the appliance is connected with the first test load or when the appliance receives the first test signal; generating a first voltage/current signature data according to the first voltage/current value; and identifying a type of the appliance according to the first voltage/current signature data.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: October 11, 2016
    Assignee: METALLIGENCE TECHNOLOGY CORPORATION
    Inventors: Shiao-Li Tsao, Ming-Ling Lo
  • Patent number: 9389253
    Abstract: A system for monitoring and detecting identities of electronic devices, where each of the electronic devices generates unique power up signature during its power up sequence. The system may make use of a plurality of power outlets that each has a specific identification designation, with each one of the electronic devices being assigned to a specific one of the power outlets. A processor may be used which is configured to read the power up signature of a given one of the electronic devices during its power up sequence, when the given electronic device is plugged into a given one of the power outlets and is powering up. The processor may use a stored power up signature for the given power outlet, together with the power up signature read for the given electronic device, to determine if the given electronic device is using its assigned power outlet.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: July 12, 2016
    Assignee: AVOCENT HUNTSVILLE CORP.
    Inventor: Mario Costa
  • Patent number: 9041408
    Abstract: A system for measuring properties of a surface under test with surface waves includes a surface wave network including a dielectric substrate, a reactive grid of a plurality of metallic patches on a first surface of the dielectric substrate, a plurality of electronic nodes on the first surface of the dielectric substrate, and a ground plane on a second surface of the dielectric substrate permeable to RF fields of the surface waves, and a controller configured for causing a respective one of the electronic nodes to transmit at least one surface wave and configured for collecting data for signals received by at least one other of the plurality of electronic nodes.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: May 26, 2015
    Assignee: HRL Laboratories, LLC
    Inventors: Daniel J. Gregoire, Joseph S. Colburn
  • Patent number: 9030206
    Abstract: In a process plant, a first series of measurements from a coupling interface are received. The first series of measurements are stored. A second series of measurements from a coupling interface are received. The second series of measurements. The first series and second series of measurements are compared. An indication of loss of clamping force is generated if the first series of measurements deviates from the second series of measurements.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: May 12, 2015
    Assignee: Fisher Controls International LLC
    Inventor: Shawn W. Anderson
  • Publication number: 20150123672
    Abstract: Embodiments of the present invention disclose a method, computer program product, and system for imaging radio and microwave electromagnetic radiation using a two-dimensional sensor array. A computing system receives a readout signal from one or more of a plurality of frequency sensors, arranged in a two-dimensional array, that have the ability to detect an image of focused radio and microwave frequency radiation. The computing system maps the readout signal of each of the plurality of sensors to a location corresponding to the physical location of the sensor on the two-dimensional array. The computing system converts the readout signal into a computer readable image.
    Type: Application
    Filed: November 7, 2013
    Publication date: May 7, 2015
    Inventor: Eric R. Ao
  • Patent number: 9018961
    Abstract: A system and method for determining whether an anode injector that injects hydrogen gas into an anode side of a fuel cell stack has failed. The method includes monitoring a voltage of the fuel cell stack and performing spectral analysis of the stack voltage to identify amplitude peaks in the stack voltage. The method further includes determining whether the spectral analysis of the stack voltage has identified an amplitude peak at a location where an amplitude peak should occur if the injector is operating properly. If no amplitude peak is identified at that location, then the method determines that the injector is not operating properly. If an amplitude peak is identified at that location, then the method compares the amplitude peak to the desired amplitude peak to identify if it is within a threshold to determine if the injector is operating properly.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: April 28, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Manish Sinha, Daniel C. Di Fiore, John C. Fagley, Steven R. Falta
  • Patent number: 9018959
    Abstract: An insulating state detection unit is configured to perform failure detection for switches, which connect a flying capacitor to a sample hold circuit for acquiring a charge voltage and a ground potential, by using a failure determination threshold value according to a variable value. That is to say, the insulating state detection unit is configured to decide the failure determination threshold value by taking, as a reference, a charge voltage of a capacitor of the sample hold circuit charged with electric charge amount corresponding to a charge voltage of the flying capacitor when the flying capacitor is charged with electric charge amount corresponding to an output voltage of a DC power supply.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: April 28, 2015
    Assignee: Yazaki Corporation
    Inventor: Yoshihiro Kawamura
  • Patent number: 9018960
    Abstract: A method for enhancing the reliability of generator ground fault detection based on a signal injection scheme, wherein the generator includes a winding. The method includes injecting a test signal at a predefined frequency to the winding, measuring an electrical quantity of a response signal in the winding resulted from the injected test signal, and detecting a ground fault based on the measured value of the electrical quantity. The method further includes continuously determining the frequency of the response signal, and discarding the present measured value corresponding to the determined frequency when the determined frequency deviates from the predefined frequency with a first threshold value.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: April 28, 2015
    Assignee: ABB Research Ltd.
    Inventors: Henrik Johansson, Joseph Menezes, Stefan Roxenborg, Tord Bengtsson
  • Patent number: 8988234
    Abstract: An alarm system for alarming whenever there is a power leakage from an electronic device, includes a voltage decreasing circuit, a switch circuit and an alarm circuit. The voltage decreasing circuit receives a first voltage from a live wire output terminal and outputs a second voltage. The switch circuit outputs a control signal when the power leakage is detected. The switch circuit is electrically connected to a connection port. The connection port is electrically connected to the live wire output terminal and a neutral wire output terminal. The alarm circuit receives the control signal and alarms. If there is power leakage from the electronic device, the first voltage from the live wire input terminal flows into the ground wire input terminal via the electronic device; the switch circuit turns on and the alarm circuit is closed to alarm.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: March 24, 2015
    Assignee: Zhongshan Innocloud Intellectual Property Services Co., Ltd.
    Inventor: Ke-You Hu
  • Publication number: 20150077129
    Abstract: A method of detecting a digital leakage signal originating from a leak in a coaxial cable portion of an HFC network. The network has a transmission end from which a digital signal is transmitted to the coaxial cable portion. The digital signal is emitted into free space from the leak to produce the leakage signal. The method comprises: (a) producing a first set of samples representing the digital signal; (b) transmitting the first set of samples to a leakage detector; (c) moving the leakage detector to a detection point in the vicinity of the network; (d) receiving the leakage signal from the leak; (e) sampling the leakage signal to produce a second set of samples; and (f) performing a cross-correlation of the first set of samples with the second set of samples, to produce a cross-correlation function having a peak, whereby the leakage signal is detected from the peak.
    Type: Application
    Filed: November 25, 2014
    Publication date: March 19, 2015
    Applicant: ARCOM DIGITAL, LLC
    Inventor: Victor M. Zinevich
  • Patent number: 8981791
    Abstract: A method, apparatus and software related product are presented for adaptive frequency-domain windowing to determine a time-domain crosstalk in a cable and produce effective TDX plots regardless of the frequency of a worst NEXT (near-end crosstalk). An adaptive window such as a low pass or pass band window may be selected based on the frequency of a measured worst NEXT margin for each pair combination.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: March 17, 2015
    Assignee: Fluke Corporation
    Inventor: Peter Q. Oakley
  • Patent number: 8981788
    Abstract: In a calibration process, a capacitor unit is removed from end terminals, or namely, respective capacitors are not connected to terminals. A prescribed voltage (a known voltage) is applied between these end terminals. Among bypass switches of a bypass circuit, the bypass switches connected to one terminal or two or more consecutive terminal pairs from the positive end terminal side are ON. Terminal voltages other than the negative end terminal are obtained and stored as calibration information.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: March 17, 2015
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Katsuei Ishida, Osamu Hamada
  • Patent number: 8981787
    Abstract: A method is provided for detecting a state of a connection between an electrically driven motor vehicle (1) and a corresponding charging station. The motor vehicle (1) has a control pilot (CP) function with a vehicle-side control pilot (CP) line (3). The method includes using a power line communication (PLC) chip (2) of the motor vehicle (1) to measure the length of a control pilot line between the motor vehicle and the charging station.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: March 17, 2015
    Assignee: Dr. Ing. h.c.F. Porsche Aktiengesellschaft
    Inventors: Michael Scheu, Daniel Spesser
  • Patent number: 8963556
    Abstract: A system and method for detecting excess voltage drop (EVD) in a three-phase electrical distribution circuit includes a diagnostic system comprising a processor that is programmed to receive three-phase voltages and currents provided to terminals of the electrical machine, determine fundamental components of the three-phase voltages and currents provided to the terminals, and compute positive, negative, and zero sequence currents from the fundamental components.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: February 24, 2015
    Assignee: Eaton Corporation
    Inventors: Santosh Kumar Sharma, Xin Zhou, Steven Andrew Dimino, Supriya Karnani, Snehal Kale, Rahul Choudhary, Debsubhra Chakraborty
  • Patent number: 8933721
    Abstract: An embodiment method of diagnosing a power source arrangement includes a plurality of n power sources connected in series between output terminals, wherein n?2. At least two different groups of power sources are selected from the power source arrangement. A voltage of each of the at least two different groups is measured between the output terminals. During the measurement of the voltage of one group, the power sources of the power source arrangement that do not belong to the one group are bypassed. The at least two measured voltages obtained through measuring the voltage of each of the at least two different groups or at least two voltages that are dependent on these at least two measured voltages are compared.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: January 13, 2015
    Assignee: Infineon Technologies Austria AG
    Inventor: Gerald Deboy
  • Patent number: 8912801
    Abstract: A method for detecting an internal failure in a capacitor bank connected to a power system, wherein the capacitor bank includes a plurality of capacitor units that are divided into two Y sections. Each phase in each of the Y sections defines a leg and each leg includes series and/or parallel-connected capacitor units. The internal failure may occur in one or more capacitor elements or units or involve one or more legs. The method includes measuring the phase current in one of the phases, calculating the root mean square value, denoted by RMS, of the measured phase currents, measuring the unbalanced current between the two sections, calculating the RMS value of the measured unbalanced currents, and detecting the phase angle between the measured phase current and the measured unbalanced current.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: December 16, 2014
    Assignee: ABB Research Ltd.
    Inventors: Zoran Gajic, Mustafa Ibrahim, Jianping Wang
  • Publication number: 20140361785
    Abstract: A method of detecting a fault in a subsea power cable or in a direct electric heating system including a subsea power cable is provided. Measuring points are distributed along the subsea power cable. The method includes measuring at each measuring point a current in the subsea power cable and comparing the currents measured at the different measuring points.
    Type: Application
    Filed: January 25, 2013
    Publication date: December 11, 2014
    Inventor: Damir Radan
  • Patent number: 8878559
    Abstract: An IC current measuring apparatus is provided between an IC and a substrate. The IC current measuring apparatus electrically connects each of a plurality of IC-facing terminals and a different one of a plurality of substrate-facing terminals. Especially, resistances are each inserted into a path between an IC terminal targeted for measurement and a substrate terminal corresponding thereto. Furthermore, the IC current measuring apparatus is provided with terminals each used to measure a voltage between both ends of an inserted resistance corresponding thereto. Accordingly, a measurer who measures current flowing through an IC-facing terminal can measure the current flowing through the IC-facing terminal by providing the IC current measuring apparatus between the IC targeted for measurement and the substrate and measuring a voltage between both ends of an inserted resistance corresponding to the IC terminal through which current he/she wishes to measure flows.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: November 4, 2014
    Assignee: Panasonic Corporation
    Inventors: Takeshi Nakayama, Yoshiyuki Saito, Masahiro Ishii, Kouichi Ishino, Yukihiro Ishimaru
  • Patent number: 8878561
    Abstract: This invention is to detect defective products of semiconductor devices with high accuracy even when the characteristics of the semiconductor devices vary according to their positions on each of wafers.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: November 4, 2014
    Assignee: Renesas Electronics Corporation
    Inventor: Kazuhiro Sakaguchi
  • Patent number: 8847605
    Abstract: A connection diagnostic apparatus for a ground fault detector including an oscillator connected via a coupling capacitor to an electric circuit with a first connection line and a second connection line, and a voltage detector for detecting a voltage value between the oscillator and the coupling capacitor is provided with a first relay and a second relay provided in the first connection line and the second connection line, and a programmable controller. The programmable controller determines a connected state of the ground fault detector based on a change amount of a voltage value detected by the voltage detector when the first relay is turned on or off and determines the connected state of the ground fault detector based on a change amount of a voltage value detected by the voltage detector when the second relay is turned on or off.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: September 30, 2014
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Tsuyoshi Morita
  • Publication number: 20140266237
    Abstract: A dynamic real time transmission line monitor, a dynamic real time transmission line monitoring system, and a method of dynamic real time transmission line monitoring. A dynamic real time transmission line monitor includes a housing installable on a transmission line, the housing including a base portion, and a cover portion coupled to the base portion and defining a cavity of the housing together with the base portion; a sensor configured to sense in real time at least one of a temperature, a position, a current, an acceleration, a vibration, a tilt, a roll, or a distance to a nearest object; and an antenna in the cavity of the housing and configured to transmit a signal including information sensed by the sensor away from the monitor in real time.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Applicant: LINDSEY MANUFACTURING COMPANY
    Inventors: Keith E. LINDSEY, Philip E. SPILLANE, An-Chyun WANG
  • Patent number: 8829916
    Abstract: In one embodiment, the method for locating a defect in a wired transmission line, which extends between a first end and a second end, includes measuring a first modified noise signal at the first end by a first measuring unit, and making a first representation of the first modified noise signal. A second modified noise signal is measured at the second end by a second measuring unit, and a second representation of the second modified noise signal is made. The location of the defects are derived from the representations.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: September 9, 2014
    Assignee: Alcatel Lucent
    Inventors: Frank Cyriel Michel Defoort, Danny Van Bruyssel
  • Patent number: 8810532
    Abstract: A test system for testing a capacitive-sense touchscreen is disclosed. Specifically, the test system may be incorporated within a controller that is also used to control operations of the touchscreen. The controller may include an Integrated Circuit and the test system may correspond to a test capacitor embedded into the Integrated Circuit.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: August 19, 2014
    Assignee: Pixart Imaging, Inc.
    Inventors: Sarangan Narasimhan, Mercedes E. Gil
  • Patent number: 8791704
    Abstract: Disclosed herein are systems and methods for identifying a fault type in an electric power delivery system using an angle difference between a total zero-sequence current and a total negative-sequence current and a comparison of phase-to-phase currents against a threshold. The angle difference falls into one of a number of predetermined angle difference sectors. Each sector is associated with a phase-to-ground fault type and a phase-to-phase-to-ground fault type or two phase-to-phase-to-ground fault types. The phase-to-phase current(s) of the indicated phase-to-phase-to-ground fault type(s) associated with the sector are compared with a threshold to determine which of the fault types of the sector is the actual fault type. The threshold may be a multiple of a maximum phase-to-phase current.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: July 29, 2014
    Assignee: Schweitzer Engineering Laboratories Inc.
    Inventors: Mangapathirao Venkata Mynam, Yanfeng Gong
  • Patent number: 8781783
    Abstract: A system and method for checking a ground via of control chips of a printed circuit board (PCB) provides a graphical user interface (GUI) displaying a layout of the PCB. The control chip has a plurality of ground pins. The computer searches for signal path routing of each ground pin and ground vias along each signal path routing of each ground pin. If there are any ground vias having the same absolute coordinates, the computer determines that the ground vias are shared by more than one ground pin.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: July 15, 2014
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Hsien-Chuan Liang, Shen-Chun Li, Chun-Jen Chen, Shou-Kuo Hsu, Yung-Chieh Chen, Wen-Laing Tseng
  • Patent number: 8773142
    Abstract: An electronic component includes an oscillator element, a driving circuit outputting a driving signal to the oscillator element, a clock frequency generator outputting a clock signal to the driving circuit, a clock frequency controller controlling a frequency of the clock signal, a consumption-current detection unit detecting a consumption current of the driving circuit, and a fault detection unit electrically connected to the consumption-current detection unit and the clock frequency controller. When the clock frequency controller changes the frequency of the clock signal, the detected consumption current changes, and allows the consumption-current detection unit to detect the change of the consumption current. The fault detection unit detects a fault based on the change of the frequency of the clock signal and the change of the consumption current. This electronic component can have a fault detection function and a small size.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: July 8, 2014
    Assignee: Panasonic Corporation
    Inventors: Takeshi Fujii, Keisuke Kuroda
  • Patent number: 8766645
    Abstract: A method for tracking the deterioration of the insulators in a rotating machine, a method for preventive maintenance of these machines using this tracking and devices using the tracking method is presented.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: July 1, 2014
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: GĂ©rard Friedrich, Marie Jaillet-Delclaud, Emilie Renouard-Mouren, David Laurent, Bernard Mineur, Emmanuel Odic