公开(公告)号：US20210140409A1

公开(公告)日：2021-05-13

申请号：US17072550

申请日：2020-10-16

申请人： Thorsten Schlüter ,  Heiner Strauß ,  Kim Weyrich

发明人： Thorsten Schlüter ,  Heiner Strauß ,  Kim Weyrich

IPC分类号： F03D17/00 ,  F03D80/30 ,  G01R27/16 ,  G01R31/58

摘要： In a method, impulse response information indicative of an impulse response is determined based on an impulse introduced into a lightning conductor and characterized by an electromagnetic wave. The impulse response information representing at least a waveform and a travel time determined after the introduction of the impulse based on reflection thereof. Evaluation information is specified based on the determined impulse response information. The impulse response information is analyzed at least with respect to the represented waveform and travel time of the introduced and reflected electromagnetic wave. The evaluation information is indicative of whether or not the lightning conductor is functional. The determined evaluation information is output. Also disclosed are a device for practicing this method, a rotor blade for a wind turbine that includes at least one lightning conductor and a device for practicing the method, and a system with one or more devices for practicing the method.

公开(公告)号：US10996285B2

公开(公告)日：2021-05-04

申请号：US15833809

申请日：2017-12-06

申请人： Hyun Chang Lee

发明人： Hyun Chang Lee

IPC分类号： G01R31/52 ,  G01V3/15 ,  G01R27/16 ,  G01R31/08 ,  G01R31/58

摘要： A method for detecting an electric leakage point without interrupting a power supply is provided. The method includes transmitting a unipolar direct current (DC) survey voltage signal to an electric wire of the power supply. The method includes transmitting a chain of electromagnetic wave signals generated around the electric wire to synchronize a reference time to measure an earth potential of the unipolar DC voltage signal and capture an electromagnetic tracking signal. The method includes tracing a buried route of the electric wire by analyzing the electromagnetic tracking signal according to the reference time. The method includes measuring the earth potential of the unipolar DC voltage signal on the ground according to the reference time. The method includes locating the electric leakage point by identifying a polarity of the unipolar DC voltage signal.

公开(公告)号：US20210116516A1

公开(公告)日：2021-04-22

申请号：US17068083

申请日：2020-10-12

申请人： Prysmian S.p.A.

发明人： Paolo Maioli

IPC分类号： G01R31/58 ,  G01R15/20

摘要： An electrical cable analysis method includes providing an electrical cable comprising an elongated metallic element and a cable core, the cable core comprising an electrical conductor. The method includes connecting an electrical generator to an electrical circuit including the elongated metallic element, generating, by the electrical generator, a flow of an electrical current along the electrical circuit, detecting a magnetic field associated with the flow of the electrical current in the electrical cable, measuring at least one value relating to the magnetic field along a cable length of the electrical cable, and analyzing the measured at least one value to obtain information about at least one structural aspect of the electrical cable.

公开(公告)号：US10928435B2

公开(公告)日：2021-02-23

申请号：US16511984

申请日：2019-07-15

申请人： THE BOEING COMPANY

发明人： Christopher Mark Severns ,  Vyacheslav Khozikov

IPC分类号： G01R31/11 ,  G01D5/40 ,  G01D5/353 ,  G01R31/58

摘要： An electrical system is provided. The electrical system includes an insulated electrical conductor installed in an aircraft and configured to conduct a current over a length of the insulated electrical conductor. The electrical system includes an optical fiber includes a jacket surrounding an optical core, the optical fiber installed adjacent to the insulated electrical conductor. The electrical system includes a photo detector coupled to the optical fiber and configured to detect an electromagnetic signal carried by the optical fiber and at least partially generated as a function of an electrical fault that occurs at a point along the length of the insulated electrical conductor.

公开(公告)号：US10830648B2

公开(公告)日：2020-11-10

申请号：US16407949

申请日：2019-05-09

申请人： FANUC CORPORATION

发明人： Shingo Nose

IPC分类号： G01K15/00 ,  G01K1/00 ,  G01K13/00 ,  G01K7/00 ,  G01K3/14 ,  H05K1/18 ,  H05K1/14 ,  H05K1/11 ,  G01R31/58

摘要： An abnormal temperature detection system that detects an abnormal temperature in a cable used to transmit power to a electrical device. The abnormal temperature detection system includes first and second conductors that are disposed along a longitudinal axis direction of the cable, and a plurality of temperature-responsive electronic components that are disposed along the longitudinal axis direction of the cable and are electrically connected to the first and second conductors. The first and second conductors and the plurality of temperature-responsive electronic components form an electrical circuit. An abnormal temperature is detected on the basis of an electrical signal acquired from the electrical circuit.

公开(公告)号：US10816610B2

公开(公告)日：2020-10-27

申请号：US15711449

申请日：2017-09-21

申请人： Genii, Inc.

发明人： Marcia L. Morris ,  Jose Doval ,  Patrick Kehl

IPC分类号： G01R31/58 ,  G01R31/44 ,  A61B18/12 ,  A61B18/00 ,  A61B18/14

摘要： In some embodiments, an apparatus includes a substrate having a smoothly bending surface to fit into a human hand. The substrate includes a start test switch, a first connector to couple to a first end of a cable, and a second connector to couple to a second end of the cable. The cable has an impedance. The electronic circuit is coupled to the, first connector and the second connector. In operation, the electronic circuit provides a first signal when the first end of the cable is coupled to the first connector and the second end is coupled to the second connector, the start switch is activated, and the impedance is between a minimum impedance value and a maximum impedance value. The electronic circuit provides a second signal when the first end of the cable is coupled to the first connector and the second end is coupled to the second connector, the start switch is activated, and the impedance is greater than the maximum impedance value.

公开(公告)号：US20200319262A1

公开(公告)日：2020-10-08

申请号：US16832864

申请日：2020-03-27

申请人： ABB Power Grids Switzerland AG

发明人： YouYi Li ,  Jianping Wang ,  Aken-Kai Liu

IPC分类号： G01R31/58 ,  H02H1/00 ,  H02H7/22

摘要： A method can be used for fault detection of a transmission. The method includes obtaining instantaneous measurements of local voltages and local currents of the transmission line, obtaining filtered measurements of the local voltages and local currents by subjecting the measurements of the local voltages and local currents to low pass filtering, obtaining a compensated voltage calculated by subjecting the filtered measurements to a differential equation based algorithm, and performing fault detection by forming a ratio between the compensated voltage and the a reference voltage. An internal fault is determined when the ratio is below a threshold and an external fault is determined when ratio is larger than above the threshold.

公开(公告)号：US20200300925A1

公开(公告)日：2020-09-24

申请号：US16824010

申请日：2020-03-19

申请人： FANUC CORPORATION

发明人： Daisuke KOBAYASHI ,  Takashi IDEI

IPC分类号： G01R31/58 ,  H02P6/16 ,  H02P6/24

摘要： Provided is a control system of an industrial machine that can automatically detect the presence or absence of a wiring error at a start-up of a machine, and that prevents a dangerous operation such as high rotation/high torque of a motor from occurring due to a wiring error. A control system of an industrial machine includes: a control unit that controls driving of a drive unit of the industrial machine; a command unit that issues a command to the control unit; and a wiring error detection device that detects a wiring error in a system of the control unit and the drive unit on a basis of a feedback value of actual driving of the drive unit upon a start-up of the industrial machine.

公开(公告)号：US10734136B2

公开(公告)日：2020-08-04

申请号：US16031510

申请日：2018-07-10

申请人： Erwin Koeppendoerfer ,  Bernd Janssen

发明人： Erwin Koeppendoerfer ,  Bernd Janssen

IPC分类号： H02G3/04 ,  H01B7/32 ,  G01R31/58 ,  G01B7/16 ,  G01M5/00 ,  H01B7/04 ,  H01B7/17 ,  H01B7/00 ,  G01R1/06

摘要： The disclosure relates to a cable, which is adapted to extend in an initial configuration according to a predetermined initial state and in a deformed configuration to assume a deformed state compared with the initial state, wherein the cable has a sheath arrangement, which extends along a longitudinal axis of the cable at least in sections, wherein the sheath arrangement is adapted to change its impedance according to the initial or deformed configuration of the cable. The disclosure likewise relates to an arrangement comprising a cable and a measuring unit as well as a method for detecting a deformed configuration of a cable.

公开(公告)号：US10649041B2

公开(公告)日：2020-05-12

申请号：US16434855

申请日：2019-06-07

申请人： Biosense Webster (Israel) Ltd.

发明人： Yochai Parchak ,  Eyal Rotman

IPC分类号： G01R31/50 ,  A61B5/0408 ,  A61B5/06 ,  A61B5/00 ,  G01R31/58 ,  A61B5/042 ,  A61B18/14 ,  A61B5/113 ,  G01R31/28

摘要： A cable, an associated monitoring system and methods are provided which monitor the continuity of current of electrical components such as sensor signals from sensors used in connection with a medical apparatus. The cable includes a proximal end for coupling with a processing unit and a distal end with or for coupling to sensors. The processing unit generates a continuity signal that travels through the cable via an inductor coil conductor to a distal end inductor coil which imparts the signal to sensor signal conductors of the cable. The continuity signal is carried back to the processing unit with signals from the sensors. Circuitry of the processing unit can detect the returning continuity signals to indicate proper connectivity of the sensor signals. The connection status information of the sensors can be displayed to inform a doctor or other operator of the medical apparatus of sensor signal continuity.