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| Number | Title | Issue Date |
| 7999556 | Method and apparatus for identifying and selecting proper cable connections A system includes a first electrical component, a second electrical component, and at least two cables connecting the first and second electrical components. Time varying signals are transmitted through the cables with at least one of the cables carrying an injected... | 08/16/2011 |
| 7973536 | Traveling wave based relay protection An apparatus includes at least one Rogowski coil and a processor. The at least one Rogowski coil is positioned within an electrical power distribution network to detect a first traveling wave current caused by a fault on an electrical power transmission line of the ... | 07/05/2011 |
| 7872478 | Method and adaptive distance protection relay for power transmission lines A method and an adaptive distance protection relay for compensating for a remote line end infeed effect during determination of a distance to a resistive fault on a three-phase power transmission line. It is assumed that a fault current flows through the fault resis... | 01/18/2011 |
| 7868621 | Power line communication based aircraft power distribution system with real time wiring integrity monitoring capability A power line communication-based aircraft power distribution system may allow for both power line communication (PLC) technology and spread spectrum time domain reflectometry (SSTDR) technology to be utilized in aircraft power distribution systems to achieve key mai... | 01/11/2011 |
| 7733094 | Electrical instrument platform for mounting on and removal from an energized high voltage power conductor An apparatus for monitoring and measuring the electrical, thermal and mechanical operating parameters of high voltage power conductors. A toroidal shaped housing, which can be mounted onto an energized conductor, contains all of the necessary electrical instruments ... | 06/08/2010 |
| 7609068 | System and method for particulate sensor diagnostic A particulate (soot) sensor system has a diagnostic feature for verifying the integrity of the wiring leads. The sensor system includes a sensor and processing circuitry. The sensor has a substrate, first and second sensing electrodes on the substrate and a heater e... | 10/27/2009 |
| 7598747 | Noise injection apparatus for printed circuit board A noise injection apparatus for injecting noise to a printed circuit board is disclosed that includes a signal generator that generates noise, a coaxial cable having one end connected to an output of the signal generator, and a probe that is connected to another end... | 10/06/2009 |
| 7592816 | Localizer cable fault analyzer A Localizer cable fault analyzer that memorizes which antenna in a Localizer antenna array caused a fault. The Localizer equipment monitors the antenna transmit and monitor cables for continuity using a DC voltage. The present invention senses the voltage drop on th... | 09/22/2009 |
| 7535233 | Traveling wave based relay protection An apparatus includes at least one Rogowski coil and a processor. The at least one Rogowski coil is positioned within an electrical power distribution network to detect a first traveling wave current caused by a fault on an electrical power transmission line of the ... | 05/19/2009 |
| 7425896 | Tag testing device, tag testing method, and tag testing program A tag testing device uses an infrared camera to take an image of a plurality of radio frequency identification tags, compares the image with a stored standard tag pattern image storage, and detects defective tags based on the comparison. A radio wave transceiver bul... | 09/16/2008 |
| 7424400 | Method of monitoring line faults in a medium voltage network The present invention relates to a method of monitoring line faults in a medium voltage network (1) of the type comprising an electricity generating plant (3) supplying electricity to a plurality of customers over a network of medium voltage power line... | 09/09/2008 |
| 7400150 | Remote fault monitoring in power lines Systems and methods for remotely monitoring and detecting faults in power distribution systems. In one embodiment, a remote fault monitoring system comprises a plurality of remote fault detection devices distributed on a power distribution network, and a monitoring ... | 07/15/2008 |
| 7388384 | Method and system for monitoring partial discharge in gas-insulated apparatus A gas-insulated apparatus is equipped with multiple sensors for sensing a partial discharge signal caused by a foreign substance, and a frequency analyzing section for analyzing the frequency of the sensed partial discharge signal. A defect type judging section esti... | 06/17/2008 |
| 7362850 | Method and arrangement for estimation of line properties The length and attenuation of a signal line between a transmitter and a customer premises equipment is to be estimated. A frequency dependent line input impedance (Zin(f)) as seen from the transmitter, is measured and an absolute impedance value (œ Z | 04/22/2008 |
| 7363190 | Sensor control circuit A sensor control circuit includes an acceleration sensor which detects acceleration and generates a detection signal. The sensor control circuit also includes a processing section which generates a calculation result by calculating the acceleration in accordance wit... | 04/22/2008 |
| 7356444 | Embedded system for diagnostics and prognostics of conduits An apparatus providing a means for assessment of the integrity of insulated conduits, harnesses, cables, pipelines and other interconnection systems constructed with integral sensitized media, discrete sensors, and electronics providing a means for transforming sens... | 04/08/2008 |
| 7355412 | Remote fault monitoring system Remote indication devices are each a combination of electrical parameter measurement circuitry, a CPU, and a communication device. Each remote indication device is electrically or electromagnetically coupled to a power distribution circuit conductor to monitor the c... | 04/08/2008 |
| 7324921 | Container inspection system The container inspection system operates globally at container handling facilities around the world and includes at least one transport apparatus located at a container handling facility having a spreader or other framework for connecting and handling cargo containe... | 01/29/2008 |
| 7324913 | Methods and apparatus for testing a link between chips In a first aspect, a first method of testing a link between a first chip and a second chip is provided. The first method includes the steps of, while operating in a test mode, (1) transmitting test data of sufficient length to enable exercising of worst case transit... | 01/29/2008 |
| 7310049 | Status indicator A status indicator indicates an operating state, including an electrical malfunction, of an electrical load that is located and controlled from locations remote from a monitoring location. ... | 12/18/2007 |
| 7301739 | Ground-fault circuit-interrupter system for three-phase electrical power systems A ground-fault circuit-interrupter method and system for three-phase electrical power systems including a plurality of GFCI units and a processor forming a ground-fault circuit interrupting system for use in a three-phase power distribution network including a three... | 11/27/2007 |
| 7298149 | Fault location using measurements of current and voltage from one end of a line A method to locate a fault from one end of a section of a power line utilizing measurements of current, voltage and angles between the phases at a first end of said section. Symmetrical components of currents are calculated for the current and voltage measurement at... | 11/20/2007 |
| 7286963 | Method and device for fault location on three terminal power line A method for locating a fault in three terminal power line, having sections located in front of or behind of the tap point and which assumes occurrence of the fault in at least one of those sections. Three phase currents and voltages are measured at one end of the p... | 10/23/2007 |
| 7283594 | Impedance modulation signaling Signalling between transmitting means and receiving means wherein signals from the transmitting means are subjected by the receiving means to deliberate reflections and resulting signals are transmitted back as meaningful at the transmitting means, different deliber... | 10/16/2007 |
| 7262603 | System and method for sensing the formation of tin whiskers A system and method for sensing the formation of tin whiskers is presented. An assembly substrate includes whisker detectors at various locations for detecting tin whiskers in an X direction, a Y direction, and a Z direction relative to the assembly substrate. Each ... | 08/28/2007 |
| 7253633 | Threshold adjustment accuracy for ground fault condition determination A polyphase power system with a system safety ground supplies a plurality of power phases over a respective plurality of power lines to power a load. A plurality of phase fault detectors of a fault detection component monitor the plurality of power lines, respective... | 08/07/2007 |
| 7248057 | Method, apparatus and computer-readable code for detecting on the fly an incipient ground fault in an electrical propulsion system of a locomotive Method, apparatus and computer-readable code are provided for detecting a location of an incipient ground fault in an electrical propulsion system of a relatively large land-based vehicle, such as a locomotive. The detection is performed essentially in real time and... | 07/24/2007 |
| 7221166 | Fault location using measurements from two ends of a line The present invention relates to a method to locate a fault in a section of a transmission line using measurements of current, voltage and angles between the phases at a first (A) and a second (B) end of said section. The invention is characterised by the steps of, ... | 05/22/2007 |
| 7199989 | Digital protection relay with time sync function In a digital protection relay with a time sync function, the sampling timing of which is specified based on a reference timing transmitted from a time signal generator to a time sync unit, with a determination value. The time sync unit includes a reception circuit t... | 04/03/2007 |
| 7187179 | Wiring test structures for determining open and short circuits in semiconductor devices A wiring test structure includes a plurality of wiring traces configured in an interleaving spiral pattern. At least one of the plurality of wiring traces configured for open circuit testing therein, and at least a pair of the plurality of wiring traces is configure... | 03/06/2007 |
| 7188053 | Method, computer program, and system for automated real-time signal analysis for detection, quantification, and prediction of signal changes A method, computer program, and system for real-time signal analysis providing characterization of temporally-evolving densities and distributions of signal features of arbitrary-type signals in a moving time window by tracking output of order statistic filters (als... | 03/06/2007 |
| 7180300 | System and method of locating ground fault in electrical power distribution system A method for locating a ground fault in an electrical power distribution system includes providing a plurality of current sensors at a plurality of locations in the electrical power distribution system. The method further includes detecting a ground fault in the ele... | 02/20/2007 |
| 7164274 | Cable diagnostics using time domain reflectometry and applications using the same A system and method are used to determine connectivity and/or cable faults of a cable. A signal transmitting and receiving system is coupled to the cable. An analog-to-digital converter (ADC) coupled to the signal transmitting and receiving system. A TDR system coup... | 01/16/2007 |
| 7161356 | Voltage/current testing equipment for microfluidic devices The present invention provides novel methods and devices for testing/verifying the configuration of one or more microfluidic elements in a microfluidic device. In particular the methods and devices of the invention are useful in testing for blockages or the presence... | 01/09/2007 |
| 7157927 | Test pattern for testing resistance of pattern of semiconductor substrate A test pattern includes a test wiring pattern on a lower surface of a substrate. First, second, third and fourth upper patterns are formed on an upper surface of the substrate. First, second, third and fourth electrodes are formed respectively on the first, second, ... | 01/02/2007 |
| 7138924 | Disturbance direction detection in a power monitoring system A system for determining the location of a disturbance event in a power distribution system. More specifically, the present invention provides a system for determining the direction of a disturbance event at the individual meter location and a system for analyzing t... | 11/21/2006 |
| 7130766 | Energy-saving evaluation apparatus, ecological driving evaluation apparatus, energy saving evaluation system, ecological driving evaluation system and method thereof In an energy-saving evaluation apparatus for evaluating energy conservation for a machine that is to be operated by a user, the energy-saving evaluation apparatus includes: a detection unit that includes a monitor device for measuring a running state of the machine,... | 10/31/2006 |
| 7119546 | Method for single ended line testing and single ended line testing device The present invention relates to a single ended line testing method for qualifying an electrically conducting line. This method includes the steps of sending a plurality of excitation signals from a first end of the line towards a second end of the line and before t... | 10/10/2006 |
| 7119567 | System and method for testing one or more dies on a semiconductor wafer A testing system or method compares read data from one or more dies in a semiconductor wafer with the original data written onto the one or more dies The testing system includes one or more write registers connected to one or more dies on the semiconductor wafer. On... | 10/10/2006 |
| 7107183 | Recyclable electric junction box applicable to automotive vehicles A recyclable electric junction box applicable to automotive vehicles, of the type comprising at least one casing housing a series of circuits inside materialized in one or more printed circuit boards with a series of electroconducting tracks on at least one of its s... | 09/12/2006 |
