For Fault Location Patents (Class 324/512)
  • Patent number: 11133204
    Abstract: A server trains a neural network by feeding a first set of input time-series data of one or more sensors of a first processing chamber that is within specification to the neural network to produce a corresponding first set of output time-series data. The server calculates a first error. The server feeds a second set of input time-series data from corresponding one or more sensors associated with a second processing chamber under test to the trained neural network to produce a corresponding second set of output time-series data. The server calculates a second error.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: September 28, 2021
    Assignee: Applied Materials, Inc.
    Inventors: Heng Hao, Tianqing Liao, Sima Didari, Harikrishnan Rajagopal
  • Patent number: 11079422
    Abstract: System and method for locating a fault on a line comprises a sampler that samples a pulse from the fault, the sampling being carried out at a predetermined sampling rate. A differentiator produces a differential or derivative of the pulse, and an analyzer obtains timing information from the derivative, from which it is possible to locate the fault knowing the total length of the line and the wave propagation rate.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: August 3, 2021
    Assignee: Ariel Scientific Innovations Ltd.
    Inventors: Yosef Pinhasi, Asher Yahalom
  • Patent number: 11067610
    Abstract: A partial discharge (PD) detection system includes a PD sensor configured to sense a PD event of an electrical system and to generate a sensor signal in response to the PD event. An envelope generator is coupled to receive the sensor signal from the PD sensor. The envelope generator extracts an envelope signal from the sensor signal. A digitizer is configured to convert the envelope signal to a digital representation of the PD event.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: July 20, 2021
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Todd Karin, Peter Kiesel, Ajay Raghavan
  • Patent number: 11063630
    Abstract: In one embodiment, a method includes transmitting from power sourcing equipment, low voltage pulse power to a powered device in a communications network, performing a safety test, enabling high voltage pulse power operation at the power sourcing equipment upon passing the safety test, and transmitting high voltage pulse power from the power sourcing equipment to the powered device. The powered device synchronizes with a waveform of the low voltage pulse power.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: July 13, 2021
    Inventors: Douglas Paul Arduini, Sung Kee Baek, Richard Anthony O'Brien, Joel Richard Goergen, Chad M. Jones, Jason DeWayne Potterf, Ruqi Li
  • Patent number: 11035907
    Abstract: In a multi-phase power grid fed by a power source, earth fault (460) is located by means of a power supply source synchronized with the power grid, which is connected between a zero point of the grid and earth. In a fault current compensation mode (420), a control unit controls the alternating voltage source to compensate for any ground fault current in the power grid to a value below a threshold level. In a fault detecting mode (430), the control unit gradually adjusts the output voltage of the alternating voltage source with respect to amplitude and/or phase angle (440). A change of zero-sequence current and zero-sequence admittance between the alternating voltage source and a fault location is measured (450) by means of at least one detector. The at least one detector is communicatively connected to the control unit and reports recorded measured values representing zero-sequence current and/or zero-sequence admittance to the control unit.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: June 15, 2021
    Assignee: Swedish Neutral AB
    Inventors: Klaus Winter, Andreas Winter
  • Patent number: 11016136
    Abstract: A method for detecting fault direction of transmission line of an AC power system and control system using the same.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: May 25, 2021
    Assignee: ABB Power Grids Switzerland AG
    Inventor: Kai Liu
  • Patent number: 10976462
    Abstract: Video inspection systems using personal communications devices for information display, control and storage are disclosed. In one embodiment a video inspection system includes a cable storage drum, a push-cable, a rotatable support for carrying the drum, a camera head coupled to the push-cable, and a personal communications device operatively connected to the camera head through a wired or wireless communications link.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: April 13, 2021
    Assignee: SEESCAN, INC.
    Inventor: Mark S. Olsson
  • Patent number: 10955456
    Abstract: Provided is an in-field apparatus and method for automatic localization of a fault having occurred at power transmission lines of a power supply system, the in-field apparatus includes a preprocessing unit configured to process measured voltage and/or current raw time series data of the power transmission lines to provide a normalized raw data and/or feature representation of the measured raw time series data, and an artificial intelligence module configured to predict an optimal evaluation time used for evaluation of the measured voltage and/or current raw time series data to localize the fault based on the normalized raw data and/or feature representation.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: March 23, 2021
    Inventors: Silvio Becher, Felix Buggenthin, Klaus Böhme, Florian Büttner, Matthias Kereit, Igor Kogan
  • Patent number: 10931817
    Abstract: A test instrument connectable to a network to provide copper impairment testing and remediation in a digital subscriber line (DSL) service is provided. The test instrument may comprise a port connectable to a test point in a network. The test instrument may also comprise a processing circuit to perform tests in the following categories: (i) shorts, grounds, and opens, (ii) true length, (iii) balance, and (iv) series fault, wherein the combination of these tests may determine copper impairment. Once tests are conducted, one or more remediation recommendations may be provided based at least in part on failure in one of the test categories. The test results and remediation recommendations may then be presented at an output, such as a display at a test instrument or user device.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: February 23, 2021
    Inventors: Brian Bowman, Reynald Dupuis, Paul Snead
  • Patent number: 10916192
    Abstract: An active matrix display where in one embodiment each cell comprises: a driving circuit for providing current to light emitting devices placed in the cell under the control of a data driver signal, a first light emitting device location connected to the driving circuit and a second light emitting device location connected in series to the first light emitting device location. A first thin-film transistor (TFT) is connected in parallel with the first light emitting device location and a second TFT is connected in parallel with the second light emitting device location, its gate node connected to the gate node of the first TFT. One terminal of a third TFT is connected to the gate nodes of the first and second TFTs and selectively connects a control signal to the first and second TFTs under the control of a scan driver signal. The control signal determines which of a first or second light emitting device placed in the cell emits light when the driving circuit provides current.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: February 9, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Ilias Pappas, Sean Lord, Yu-Hsuan Li
  • Patent number: 10878733
    Abstract: A method for manufacturing a display element comprising a plurality of pixels, each comprising a plurality of sub-pixels. The method comprises undertaking, using a pick up tool, a first placement cycle (1908) comprising picking up a plurality of first, untested LED dies and placing them on a display substrate at locations corresponding to the plurality of pixels, testing (1912) the first LED emitters on the display substrate to determine one or more locations of non-functional first LED emitters, selecting one or more second tested LED dies based on a result of the test, configuring the selected one or more second LED dies to enable their pick up and placement on the display substrate and undertaking, using the PUT, a second placement cycle (2008) comprising picking up the selected one or more second LED dies and placing them on the display substrate at the determined locations of the non-functional first LED emitters.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: December 29, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Padraig Hughes, Joseph O'Keeffe, Celine Oyer, William Henry, David Massoubre, Pooya Saketi
  • Patent number: 10845792
    Abstract: In one embodiment, a failure diagnosis apparatus includes a simulation module configured to simulate a target device to output virtual measured data obtained when the target device is in at least any one of one or more failure modes. The apparatus further includes a measured data obtaining module configured to obtain measured data that is measured from the target device. The apparatus further includes a failure mode identifying module configured to identify a failure mode of the target device based on the virtual measured data and the measured data.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: November 24, 2020
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions Corporation
    Inventors: Toshio Hirano, Yoshihiro Taniyama, Masayuki Ichimonji
  • 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
    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: 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
    Inventors: Yong-Cheol Cho, Young-Su Kwon
  • 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
    Inventors: Harel Primack, Moti Itzkovich
  • 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
    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
    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
    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
    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
    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
    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
    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
    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
    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
    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: 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: 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: 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: 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: 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: 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: 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