| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 324522000 |
By voltage or current measuring
| 58 |
| 324527000 |
By applying a test signal
| 50 |
| 324536000 |
By spark or arc discharge
| 18 |
| 324525000 |
By resistance or impedance measuring
| 14 |
| 324521000 |
By phase sensitive or responsive detection
| 11 |
| 324520000 |
By frequency sensitive or responsive detection
| 11 |
| 324534000 |
By reflection technique | 5 |
| 20080315891 | Transmission line pulse testing with reflection control - A Transmission Line Pulse (TLP) testing system is disclosed that has a negative pulse inverter circuit that prevents large negative reflections which typically occur after the initial TLP pulse is applied to a low impedance device under test (DUT). Avoiding repetitive reflections, which naturally occur in TLP systems, prevents inducing DUT damage and confusing testing results. The pulse inverter circuit reduces reflections to lower levels than prior art TLP configurations, and can also be combined with known techniques to further reduce reflections for different impedance DUTs. | 12-25-2008 |
| 20100085062 | Network Device, Network Connection Detector and Detection Method Thereof - A network device, a network connection detector and a detection method thereof are disclosed. The network device comprises a socket, a waveform generator and a reflected wave detector. The waveform generator sends a first test wave to at least a first contact of a plurality of contacts of a socket and then the reflected wave detector detects a first reflected wave that is corresponding to the first test wave and is reflected from the first contact. Thus a first control signal is generated according to detection result of the first reflected wave. | 04-08-2010 |
| 20110050245 | RADIO DEVICE AND FAULT POSITION SPECIFYING METHOD - A radio device includes a radio unit to perform modulation processing on a signal, an antenna to transmit and receive signals to and from an external unit, a cable to connect the radio unit to the antenna, a reflection time calculation unit to calculate a reflection time taken from after the transmission signal is input into a prescribed part of the radio unit until a transmission signal which is output from the radio unit is reflected on a path from the cable to the antenna is fed back to the prescribed part of the radio device, and a fault position specifying unit to specify a position candidate at which a fault occurs on the cable based on the calculated reflection time when the calculated reflection time is less than a reflection time threshold value. | 03-03-2011 |
| 20120074952 | HOME NETWORK CHARACTERIZATION METHOD AND SYSTEM - A method of characterizing a wiring network is implemented in a system which includes a test controller and at least two probes. On commands from the test controller, at least one of the probes changes its impedance between the nominal impedance of the wiring network and a mismatch impedance. Reflectometry measurements are performed before and after of switching the impedance of the second probe. At the first probe, an RF signal is generated and a reflected signal is measured. Then, the impedance of the second probe is changed, and again an RF signal is generated and a reflected signal is measured at the first probe. Additionally, a frequency response may be measured at the second probe. The results of the measurements are used for characterization of a transmission line between the first and second probes | 03-29-2012 |
| 20140111220 | METHOD FOR FAULT DIAGNOSIS ON SOLAR MODULES - There is provided a method for fault diagnosis on a solar module in which electrical potentials are checked within the solar module to provide the possibility for carrying out the fault diagnosis even when the solar module is not exposed to sun light. Specifically the solar cell module is excited by both a DCBIAS and an AC voltage over a wide frequency range, and the impedance of the solar cell module is measured as a function of the frequency response. There is also provided an embodiment, wherein time domain reflectometry (TDR) is used in combination with the DC BIAS and AC voltage based fault diagnosis. Based on the method safety operations can be carried out as a part of the integrated electric functionality. | 04-24-2014 |
| 324519000 |
By capacitance measuring | 3 |
| 20080246491 | Scalable method for identifying cracks and fractures under wired or ball bonded bond pads - In a method and system for testing a presence of a crack ( | 10-09-2008 |
| 20090009179 | APPARATUS AND METHOD FOR VERIFYING A SEAL BETWEEN MUTIPLE CHAMBERS - An open seal check system for a multi-chamber supply container having at least one elongated seal, the system includes: (i) a base configured to support the multi chamber container; (ii) a plurality of electrodes positioned on the base so as to be at least substantially parallel with the elongated seal; and (iii) electronics connected to the electrodes, the electrodes each forming a capacitor with the multi-chamber supply container when the container is placed on the base, the electronics configured to output a single indication of a dielectric associated with each capacitor. | 01-08-2009 |
| 20120187952 | Capacitive Page Opening Detector - An array of capacitor plates is disclosed wherein each plate is the foundation on which a page of printed material is built. Capacitance is sequentially detected between nearby pages to determine where capacitive interaction fails, thus determining the page opening. Any number of pages can be scanned in this manner without the use of buttons, switches or pointing devices. Page openings can be determined to provide automatic audible narration that is pertinent to the contents of each page, even when randomly opened. | 07-26-2012 |
| 324535000 |
By time measuring | 1 |
| 20130021039 | FAULT WAVE ARRIVAL DETERMINATION - A method and apparatus for determining the time of arrival of a fault wave at a measurement point of a power transmission system includes a measurement unit measuring a power quantity of the system at the measurement point (P | 01-24-2013 |
| 324513000 |
Where component moves while under test | 1 |
| 20100156431 | TWISTED-PAIR ELECTRICAL CABLE TESTING - Methods and systems for cable inspection operate by generating a relative motion between an electrical cable including multiple wires and a magnetic field. An electrical signal induced in the wires is measured responsively to the magnetic field. A variation in the electrical signal is sensed due to the relative motion. In response to the variation, a defect is detected in the electrical cable. | 06-24-2010 |
| Entries |
| Document | Title | Date |
|---|
| 20080297162 | 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 to monitor the parameters associated with the conductor. Moreover, the housing includes the processing capability to analyze disturbance and fault events based on these parameters. | 12-04-2008 |
| 20080315889 | FAULT ISOLATION IN INTERCONNECT SYSTEMS - A loopback connector for a system can include a connector arrangement connectable to connector of a system component and/or a cable. The loopback connector can include loopback logic for simulating cable and/or system component functionality. In an example implementation the loopback connector can also operate to protect a system component and/or cable connector during shipping. | 12-25-2008 |
| 20090039894 | Stage-Fused Transformer Loop System and Method of Rapid Diagnosis of Fault Cable or Transformer Failure Within The System - A stage-fused underground transformer loop system, which includes a series of transformers connected sequentially by a series of cables, and a series of fused elbow terminators connected to the inlets and outlets of the transformers. The fused elbow terminators are arranged in an order of decreasing the fuse capacity starting from the feed. The fused elbow terminator includes an elbow connector having a housing and a cable connector disposed within; and a fused pin connected to the cable connector. Further disclosed is a method of rapid diagnosis of a fault cable or a transformer failure using the stage-fused transformer loop system. | 02-12-2009 |
| 20090160455 | DEVICE FOR DETECTING FAULTY POSITION AND SEPARATING FASTENERS AND SPACERS AS WELL AS METHOD - A device for detecting the faulty position of and separating fasteners, more particularly blind rivets in a continuously operating conveyor apparatus, by means of which the fasteners are supplied to an automated joining machine, wherein each fastener is followed in the normal case by a spacer. According to the disclosed embodiments the device has at least three detectors, more particularly contactless inductively acting ring initiators with which on the one hand fasteners can be differentiated from spacers and on the other hand fasteners in the correct position can be differentiated from fasteners in the faulty position in the conveyor apparatus, more particularly in a supply tube. As a result of the at least three ring detectors a minimum-wear low-maintenance operation is ensured so that outage times of the rivet setter and automated riveting machine are reduced as a result of the device connected in on the input side. Furthermore a complex breakdown recognition is possible with corresponding evaluation. Furthermore the disclosed embodiments relate to a method for detecting the position of and separating fasteners in the conveyor apparatus by means of the device. | 06-25-2009 |
| 20090219031 | Method for Checking the Current Flow Through Individual Wires of a Braided Wire, and Apparatus for Carrying out the Method - In order to make it possible to detect a fault location, safely, reliably and with a high response sensitivity, in a braided wire which has a plurality of individual wires, an electric current is passed through the braided wire and the magnetic field which is formed as a result of the braided wire through which current flows is detected by a sensor and is evaluated. A fault location is deduced if the measured magnetic field has an oscillation whose length is a multiple of a lay length of the braided wire, and in particular corresponds to the lay length. The method is also used in particular for non-destructive testing of the quality of a contact connection of a contact element to the braided wire. | 09-03-2009 |
| 20100066383 | ARRAY SUBSTRATE AND DEFECT-DETECTING METHOD THEREOF - The present invention discloses an array substrate and a defect detecting method thereof. The array substrate comprises one or more shorting bars for applying signals to a plurality of data lines or a plurality of gate lines of the array substrate while testing. The array substrate further comprises a line detecting circuit for receiving signals on the plurality of data lines or the plurality of gate lines, and detecting and locating the line defects of the plurality of data lines or the plurality of gate lines. The array substrate and the defect detecting method thereof provided by the invention can locate the line defects of the array substrate accurately and quickly. | 03-18-2010 |
| 20100164503 | DIRECTIONAL ZONE SELECT INTERLOCK METHOD - An improved method to detect and locate electrical faults is provided. A method of operating a circuit breaker in an electrical circuit configured with at least one of a first main circuit breaker at a first layer of circuit protection having a first direction of current flow, and at least one second circuit breaker downstream of said at least one first main circuit breaker having a second direction of current flow, and at least one third circuit breaker downstream of said at least one second circuit breaker having a third direction of current flow, wherein one of said at least one first, second, or third circuit breakers is in short time pick-up, is provided, and comprises steps to determine the location of the fault and adjust the trip time delay of the circuit breakers according to predetermined criteria. | 07-01-2010 |
| 20110133747 | INTEGRATED ELECTRICAL CIRCUIT AND TEST TO DETERMINE THE INTEGRITY OF A SILICON DIE - A detection circuit and one or more wires or circuit traces are included in a die. The combination is used to detect mechanical failure of the substrate, e.g. silicon after singulation of the dice from the wafer. Failures may be detected at different regions or planes within the die, and the tests may be performed during operation of the packaged die and integrated circuit, even after installation and during operation of a larger electronic device in which it is incorporated. This is especially useful for chip scale packages, but may be utilized in any type of IC package. | 06-09-2011 |
| 20110285400 | Methods For Determining The Location Of A Defect In A Wired Transmission Line And Systems According To Such Methods - 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. | 11-24-2011 |
| 20120139552 | METHOD AND APPARATUS FOR OPERATING A CABLE FOR WIND FARMS - A wind energy system is provided including a geographical position sensing module and a cable for transmitting energy from the wind energy system. The cable includes a first sensing device at a first location of the cable. The first sensing device is adapted for sensing a relative position of the first sensing device. Further, the cable includes a second sensing device at a second location of the cable. The second sensing device is adapted for sensing a relative position of the second sensing device. The first and the second sensing devices are adapted to communicate with each other; and one of the first and second sensing devices is adapted to communicate with a geographical position sensing module of the wind energy system. | 06-07-2012 |
| 20130069667 | FAULT DETECTION FOR PARALLEL INVERTERS SYSTEM - According to one aspect, embodiments of the invention provide a method of operating a UPS system having a first UPS and a second UPS, the method comprising coupling at least one control line between the first UPS and the second UPS to operate the first UPS and the second UPS in a parallel mode of operation, providing output power from each of the first UPS and the second UPS to a load, detecting a fault condition in the UPS system, decoupling the at least one control line, operating the first UPS in a diagnostic mode of operation, and determining if the fault condition is associated with the first UPS. | 03-21-2013 |
| 20140015539 | SYSTEM AND METHOD FOR DETECTING A LOCATION OF FAULT IN A CABLE - A system for detecting a location of fault in a cable includes a cable transmitting a fault current, a current transforming unit connected to the cable and receiving the fault current and detecting an original signal of fault current, a detecting unit detecting a first detail signal and a second detail signal from the original signal of fault current, where both signals are detail components in a high frequency band, a comparing unit comparing the first detail signal with a preset reference value and determining a fault in the cable, and a signal filtering unit generating a first filtering signal and a second filtering signal by use of the first detail signal and the second detail signal and outputting a fault detection signal based on a result of comparing both signals. | 01-16-2014 |
| 20140266237 | DYNAMIC REAL TIME TRANSMISSION LINE MONITOR AND METHOD OF MONITORING A TRANSMISSION LINE USING THE SAME - 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. | 09-18-2014 |
| 20150077129 | LEAKAGE DETECTION OF DIGITAL SIGNALS IN AN HFC NETWORK - 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. | 03-19-2015 |
| 20150123672 | RADIO FREQUENCY AND MICROWAVE IMAGING WITH A TWO-DIMENSIONAL SENSOR ARRAY - 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. | 05-07-2015 |
| 20150316601 | IN-CHIP STATIC-CURRENT DEVICE FAILURE DETECTING METHODS AND APPARATUS - A method for detecting static-current failure devices in a chip is provided. The method includes providing a chip and determining existence of a static-current failure device in the chip. The method also includes detecting positions of a plurality of hotspots in the chip when the existence of the static-current failure devices is determined; and selecting a common circuit path according to position information of the hotspots in a circuit layout file of the chip. Further, the method includes converting a circuit layout of the common circuit path into a corresponding electrical diagram and marking the positions of the plurality of hotspots on corresponding positions on the electrical diagram; and detecting a shared device of the hotspots in the electrical diagram. Further, the method includes marking a position of the shared device in the circuit layout as a position of a static-current failure device. | 11-05-2015 |
| 20150331031 | METHODS, SYSTEMS, AND COMPUTER READABLE MEDIA FOR DETECTING AND LOCATING ONE OR MORE WIRING DEFECT IN DEDICATED AIRCRAFT SYSTEMS - Methods, systems, and computer readable media are disclosed for detecting and locating one or more wiring defect in at least one dedicated system of an aircraft, for example and without limitation, using a system testing tool to detect and locate one or more wiring defect in at least one dedicated system of an aircraft. In some aspects, the method includes using the system testing tool for generating data from the at least one system of the aircraft. In addition, the method also includes using the system testing tool for comparing the data with equivalent reference data, as well as for automatically detecting a presence or an absence of one or more wiring defect in the at least one system of the aircraft. Where one or more wiring defect is present in the at least one system, the system testing tool automatically locates the one or more wiring defect | 11-19-2015 |
| 20160069948 | ANALYZING APPARATUS - An analyzing apparatus for a semiconductor device includes an image acquiring unit configured to acquire an image of a sample and generate image data of the acquired image, a specifying unit configured to specify a failure position of the sample based on the image data, and a marking unit configured to make a mark on a surface position of the sample that corresponds to the failure position as specified by the specifying unit. | 03-10-2016 |
| 20180024183 | METHOD AND APPARATUS FOR DETECTION OF POWER SYSTEM DISTURBANCE WITHIN A DIGITAL SUBSTATION | 01-25-2018 |
| 20220137117 | A Node, System and Method for Detecting Local Anomalies in an Overhead Power Grid - A node for detecting local anomalies in an overhead power grid having at least one power line. The node includes a processing unit and a memory, wherein the node further includes: an electric field sensor configured to measure a first parameter related to an electric field around the at least one power line, and a magnetic field sensor configured to measure at least second parameter related to a magnetic field around the at least one power line. The processing unit is configured to: compare the measured first parameter and at least second parameter with historic data stored in the memory to identify local anomalies, and forward data related to the identified local anomalies to a system controller via a communication interface. | 05-05-2022 |
