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| Number | Title | Issue Date |
| 8185329 | System for testing matrix type connector A system for testing a matrix type connector includes a data collecting circuit, a control circuit, a storage unit, and a display unit. The data collecting circuit collects the connector pins' information, and transmits the collected pins' information to the control... | 05/22/2012 |
| 8170816 | Parallel arc detection using discrete wavelet transforms An apparatus to perform parallel arc fault current interruption (AFCI) is provided. The apparatus includes a current sensing device disposed in the electrical circuit, a detection unit configured to receive an output signal produced by the current sensing device and... | 05/01/2012 |
| 8160825 | Process for remote grounding, transmission sensing, and temperature monitoring device A system to monitor power line temperatures, ground moisture levels, to visually inspect the area around said power line poles and to transmit said data over short, mid, or long range to a monitoring base station for analysis. Said means for monitoring power line co... | 04/17/2012 |
| 8155897 | Test apparatus, transmission system, program, and recording medium Provided is a semiconductor test apparatus that tests a device under test, comprising a test unit that tests a device under test; and a serial transmitting section that transmits transmission data back and forth between the test unit and a control section controllin... | 04/10/2012 |
| 8140277 | Enhanced characterization of electrical connection degradation One embodiment provides a system that analyzes an electrical connection in a computer system. During operation, the system monitors a reflection coefficient associated with the electrical connection and applies a sequential-analysis technique to the reflection coeff... | 03/20/2012 |
| 8140276 | System and method for streetlight monitoring diagnostics One or more example diagnostics may be implemented as part of an intelligent luminaire manager or other radio frequency (RF) device that is in communication with an equipment or fixture such as a luminaire. Example diagnostics can determine a status such as a fixtur... | 03/20/2012 |
| 8135550 | System for monitoring and assessing electrical circuits and method of operation A system for collecting data and monitoring the operation of electrical circuits, such as branch circuits at a substation is provided. The system collects data from a plurality of sensors coupled to a plurality of electrical equipment associated with a circuit. The ... | 03/13/2012 |
| 8135551 | Robust on line stator turn fault identification system A system and method for identifying turn faults in a stator of a motor are provided. The method includes determining a normalized cross-coupled impedance from the symmetrical components of measured voltages and currents of the motor. Additionally, the normalized cro... | 03/13/2012 |
| 8108159 | Method of detecting degradation of semiconductor devices and method of detecting degradation of integrated circuits A method of detecting a degradation of a semiconductor device including calculating a first number of first traps accumulated in a gate insulation layer of the semiconductor device over an operation time of the semiconductor device; calculating the second number of ... | 01/31/2012 |
| 8103464 | Test circuit, pattern generating apparatus, and pattern generating method A test circuit connected between a test target circuit and a plurality of external terminals includes N first holding circuits to hold respectively N unit patterns produced by dividing an internal signal pattern to be input to or output from the test target circuit ... | 01/24/2012 |
| 8095326 | Method and device to predict a state of a power system in the time domain A method to predict a state of a power system and a device to perform the method are presented, where the method includes the step of performing a Fast Fourier Transform on samples of a periodic waveform signal in order to determine a frequency spectrum of the signa... | 01/10/2012 |
| 8090548 | Method and device for predicting electrolytic capacitor defects, converter and uninterruptible power supply equipped with such a device A method and device for predicting defects of a capacitor, the method including determining the ripple voltage (Udc), the temperature (TP), and the current (Ic) of the capacitor, determining the value of an equivalent series resistance (ESR) of the capacitor, and th... | 01/03/2012 |
| 8078415 | Method and apparatus to monitor state of health of electrical connections between battery and generator A system and method for monitoring the state of health of the connection between a generator and a battery includes detecting an interruption in power between the generator and the battery, incrementing a counter each time an interruption is detected, generating a t... | 12/13/2011 |
| 8060321 | System and method for detecting an electrical short across a static switch of an uninterruptible power supply A monitoring system for detecting a short circuit condition in a switching subsystem of a bypass input of a power supply. The system may comprise a voltage monitoring subsystem for monitoring a voltage across at least one component of the switching subsystem and gen... | 11/15/2011 |
| 8055459 | Instrument and method for measuring partial electrical discharges in an electrical system An instrument (1) and a method for measuring pulses of partial electrical discharges in an electrical system comprise data processing means (5) operatively associated both with an input stage (2), able to receive an analogue signal (3) re... | 11/08/2011 |
| 8055460 | Method and apparatus for monitoring solenoid health A method for monitoring the state of health (SOH) of a solenoid powered by a battery includes measuring a voltage and a current supplied to the solenoid by the battery, using a processor to determine each of an equivalent resistance and inductance of the solenoid us... | 11/08/2011 |
| 8046179 | Power converter disable verification system and method A power electronics device with an improved IGBT protection mechanism is provided. More specifically, systems and methods are provided for shortening the duration of a shutdown test pulse, such that the power output to the load is substantially unaffected. ... | 10/25/2011 |
| 8041520 | Method to detect mechanical faults and dynamic instability in rotor systems of helicopters, tilt rotor aircraft, and whirl towers A method of processing revolution to revolution blade track height and timing data so that mechanical and dynamic stability, maladjustments, and defects are discovered in a rotor with a plurality of blades on a vertical lift aircraft. Tracking devices collect blade ... | 10/18/2011 |
| 8000910 | Automated voltage analysis in an electrical system using contextual data A voltage analysis algorithm for automatically determining anomalous voltage conditions in an electrical system monitored by a plurality of intelligent electronic devices (IEDs) and automatically making recommendations for ameliorating or eliminating the anomalous v... | 08/16/2011 |
| 7996162 | Detection of shorted output pins The rates of change and difference between signals sensed at adjacent electronic module output ports are determined and compared to criteria to determine whether the output ports are shorted. ... | 08/09/2011 |
| 7996163 | Method and apparatus for detecting a short circuit in a DC link A system for detecting a short circuit in a direct current (DC) link (312), wherein the DC link (312) is coupled with a rectifier (206) which includes a set of rectifier diode pairs (310). During operation, a controller (500) recei... | 08/09/2011 |
| 7983858 | Fault test apparatus and method for testing semiconductor device under test using fault excitation function A fault test apparatus for testing a fault on each signal line in a circuit under test including signal lines includes a controller, which calculates a value of a fault excitation function for a fault signal line, using the fault excitation function representing a f... | 07/19/2011 |
| 7979218 | Test apparatus, test method and computer readable medium Provided is a test apparatus for testing a device under test, the test apparatus including: a pattern generating section that inputs a test pattern to the device under test; a judging section that judges whether the device under test is defective or not, based on an... | 07/12/2011 |
| 7979219 | Transmission medium testing apparatus and method The invention provides a method for testing a transmission medium used in a full-duplex communication system comprising an endpoint that comprises a transmitting end (TX) and a receiving end (RX); the method comprises the steps of: first, transmitting a transmitted ... | 07/12/2011 |
| 7974793 | Systems, and/or devices to control the synchronization of diagnostic cycles and data conversion for redundant I/O applications Methods and systems for controlling the synchronization of diagnostic cycles and data conversion for redundant I/O applications are provided. An exemplary system comprises a first analog input module adapted to request mastership with respect to a second analog inpu... | 07/05/2011 |
| 7970559 | Identifying damage to a wire Methods, systems, and articles of manufacture consistent with the present invention determine the type of damage to a wire, the amount of damage, and the location of the damage based on the wire's broadband impedance measured from a single measurement point. The typ... | 06/28/2011 |
| 7962297 | Failure determination device for cell voltage monitor A failure determination device for a cell voltage monitor is provided. The cell voltage monitor detects cell voltages of a plurality of single cells. The failure determination device includes a minimum value determination unit for determining whether or not a presen... | 06/14/2011 |
| 7945400 | Systems and methods for detecting high-impedance faults in a multi-grounded power distribution system The system and methods monitor odd harmonics within a power distribution system quantity using a special digital filter. A normal level of odd harmonics for the monitored quantity is established. Over predetermined time periods, the odd harmonics within the power di... | 05/17/2011 |
| 7881887 | Wireless wireharness testing system A system and method for wireharness testing includes at least one probe attachable to a connector of a wireharness, the at least one probe in wireless communication with a controller to identify a potential lack of continuity in the wireharness therebetween. ... | 02/01/2011 |
| 7844408 | System and method for time domain reflectometry testing A time domain reflectometry (“TDR”) testing method that includes storing test data resulted from a TDR test applied on an electronic component, displaying the test data, identifying a distinctive portion of the test data corresponding to a defective location in ... | 11/30/2010 |
| 7840364 | Short-circuit detection circuit, resolver-digital converter, and digital angle detection apparatus Potentials at both ends of an exciter coil to which an exciting signal is sent by a push-pull method are compared, and at least one of a short circuit to ground and a short circuit to a power supply of a signal line for the exciting signal is detected based on the d... | 11/23/2010 |
| 7835876 | Electrostatic discharge monitoring and manufacturing process control system In systems, computer program products, and methods for monitoring electrostatic discharge (ESD) fault conditions and controlling manufacturing processes on an assembly line, each ESD monitored station in the assembly line is provided with at least one ESD management... | 11/16/2010 |
| 7751993 | Technique for high-impedance ground fault detection at the common DC bus of multi-axis drives Systems and methods for detecting ground fault at the common DC bus in a high impedance ground system. A fault detection component can detect characteristics of an electrical signal including phase number (n) and fundamental frequency (H). A fast Fourier transform i... | 07/06/2010 |
| 7734432 | Transmission of a power loss condition over a network A system is disclosed as including a power supply, a secondary capacitive storage device connected to the power supply, and multiple network devices powered by the power supply. The system further includes a designated device for transmitting a power loss condition ... | 06/08/2010 |
| 7720619 | Systems and methods for detecting high-impedance faults in a multi-grounded power distribution system The apparatus and methods calculate a plurality of sum of differences for a power distribution system quantity with a sum of difference filter, provide a set of predetermined blocking conditions, provide a trending and memory with an output, generate a set threshold... | 05/18/2010 |
| 7676333 | Method and apparatus for analyzing partial discharges in electrical devices A method of analyzing partial discharge data collected from an electrical device includes collecting partial discharge data from a first electrical device belonging to a group of electrical devices. The group of electrical devices is at least partially defined by at... | 03/09/2010 |
| 7647191 | Accumulator state detection device A detector for detecting a state of an electrical storage device includes capacitor blocks formed of a capacitor-voltage equalizing circuit and a capacitor-voltage detecting circuit both coupled to respective capacitors, and a capacitor-block state outputting circui... | 01/12/2010 |
| 7640120 | Method and device for detecting arcs An arc detection means for detecting arcs in a plasma process includes at least one comparator to which an evaluation signal such as an output signal or an internal signal of an AC generator relating to the output signal and a reference value are supplied. The compa... | 12/29/2009 |
| 7630840 | Oxygen sensor readiness detection An oxygen sensor readiness module comprises a voltage source, a current detection module, and a control module. The voltage source selectively produces a bias signal, which is applied to a sensing element of an oxygen sensor. The current detection module measures a ... | 12/08/2009 |
| 7552016 | Integrated circuit having a multi-purpose node configured to receive a threshold voltage and to provide a fault signal An integrated circuit includes a monitor node adapted to receive a monitored signal. The integrated circuit also includes a multi-purpose node. The integrated circuit is adapted to receive and store a threshold presented at the multi-purpose node during a first time... | 06/23/2009 |
