公开(公告)号：US20180321295A1

公开(公告)日：2018-11-08

申请号：US15950478

申请日：2018-04-11

Applicant: LG Chem, Ltd.

Inventor： Kerfegar K. Katrak ,  Sagar V. Nagaluru ,  Thaddeus Steyskal ,  Su Hyuk Jang ,  Kunal Tipnis

IPC: G01R31/01 ,  G07C5/08 ,  G01R19/10

CPC classification number: G01R31/005 ,  B60R16/0315 ,  B60R16/033 ,  G01R19/10 ,  G01R31/007 ,  G01R31/01 ,  G01R31/3278 ,  G07C5/08 ,  H01H47/002 ,  H01H47/22

Abstract: A diagnostic system for a vehicle electrical system includes a first voltage divider circuit that outputs a second voltage in response to a first voltage, and a second voltage divider circuit that outputs a third voltage in response to the first voltage. An analog-to-digital converter outputs first and second voltage values, respectively, based on the second and third voltages, respectively. A microcontroller determines a first compensated voltage value utilizing the first voltage value and a compensation value. The microcontroller determines a difference value based on the first compensated voltage value and the second voltage value. The microcontroller commands the high side driver circuit and the low side driver circuit to transition the contactor to an open operational position when the difference value is greater than a threshold difference value.

公开(公告)号：US10006947B2

公开(公告)日：2018-06-26

申请号：US15213782

申请日：2016-07-19

Applicant: FANUC CORPORATION

Inventor： Kunio Tsuchida ,  Taku Sasaki

IPC: G01R19/10 ,  H02P27/06 ,  G01R19/00 ,  G01R1/20

CPC classification number: G01R19/10 ,  G01R1/203 ,  G01R19/0053

Abstract: A current detection circuit includes a first resistor and a second resistor identical in current path and equal in resistance value, a first and second signal transmission units which transmit respectively a signal representing the potential of the first resistor, a third and fourth signal transmission units which transmit respectively a signal representing the potential of the second resistor, a first difference operation unit which calculates the difference between the respective signals from the first and second signal transmission units, a second difference operation unit which calculates the difference between the respective signals from the third and fourth signal transmission units, and a summing unit which sums the signals output from the first and second difference operation units. The first signal transmission unit and the fourth signal transmission unit, and the second signal transmission unit and the third signal transmission unit are disposed in proximity to each other.

公开(公告)号：US20180143231A1

公开(公告)日：2018-05-24

申请号：US15575894

申请日：2016-02-18

Applicant: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUS

Inventor： Jong-In SHIM ,  Dong Pyo HAN ,  Dong-Soo SHIN

IPC: G01R27/08 ,  G01R31/26 ,  G01R19/10 ,  G01R19/25 ,  G01R31/44

CPC classification number: G01R27/08 ,  G01J1/44 ,  G01J2001/4252 ,  G01R19/10 ,  G01R19/2506 ,  G01R31/2635 ,  G01R31/44

Abstract: Disclosed are a method and device for measuring the resistance of a light-emitting diode that can measure the resistance value of the light-emitting diode accurately in a non-destructive manner. The disclosed method may include: measuring a first radiative current component of an injected current for the light-emitting diode by using the internal quantum efficiency of the light-emitting diode; generating a second radiative current component by modeling the first radiative current component; and computing a resistance value of the light-emitting diode by using the first and second radiative current components resulting from an applied voltage to the light-emitting diode.

公开(公告)号：US20180111493A1

公开(公告)日：2018-04-26

申请号：US15545723

申请日：2016-08-23

Applicant: Ming Pui Chong ,  King Shan Lam ,  Chi Leong Kwok ,  Alex Wing Hong Chan

Inventor： Alex Wing Hong Chan ,  Ming Pui Chong ,  King Shan Lam ,  Chi Leong Kwok

IPC: B60L11/18 ,  H02J7/00 ,  G01R19/10 ,  G01R19/25

CPC classification number: B60L53/60 ,  B60L53/31 ,  B60L53/63 ,  B60L53/665 ,  B60L2240/72 ,  G01R19/10 ,  G01R19/2513 ,  G06Q50/06 ,  G06Q50/30 ,  H02J7/0026 ,  H02J7/0027 ,  H02J7/007 ,  H02J2007/0001 ,  H02J2007/0096 ,  Y02T10/7055

Abstract: To prevent theft and/or leakage of electricity and to distribute electricity for recharging electric vehicles, the present invention discloses methods and systems for enabling and disabling a plurality of relays at a system. The system comprises a power supply, at least one ammeter, a power supply enabler and at least one power controller. The required steps include measuring current drawn by the plurality of loads by one or more ammeters. The power controller independently enables or disables each of the plurality of relays according to the instructions received. The power supply enabler enables or disables power supply to the system substantially based on the amount of current being drawn by the system.

公开(公告)号：US20180041211A1

公开(公告)日：2018-02-08

申请号：US15661619

申请日：2017-07-27

Applicant: FOCALTECH ELECTRONICS, LTD.

Inventor： Yunn-Hwa WANG ,  Kuet Liong FAM

IPC: H03K19/00 ,  G01R19/10 ,  H03K19/0948

CPC classification number: H03K19/0027 ,  G01R19/10 ,  G01R19/1659 ,  G06K9/00006 ,  G06K9/00053 ,  H03K19/0948

Abstract: Sending, receiving and transmitting apparatuses of a dual-power system and a fingerprint recognition system are provided. The dual-power system includes a first power system for providing a first high voltage signal and a first low voltage signal and a second power system for providing a second high voltage signal and a second low voltage signal, and a voltage difference between the first high voltage signal and the first low voltage signal is equal to that between the second high voltage signal and the second low voltage signal. The sending apparatus includes a first detection circuit for outputting a detection signal indicating whether voltages of the first and second low voltage signals are equal; and a first transmission circuit for transmitting an output signal of the dual-power system or provide a first voltage to an output terminal of the sending apparatus, based on the detection signal.

公开(公告)号：US09863983B2

公开(公告)日：2018-01-09

申请号：US14069585

申请日：2013-11-01

Applicant: COVIDIEN LP

Inventor： Dean C. Buck ,  James A. Gilbert

IPC: G01R19/10 ,  H01F5/00 ,  G01R15/18

CPC classification number: G01R19/10 ,  G01R15/181 ,  H01F5/003

Abstract: In accordance with one aspect of the present disclosure, a current sensor configured to measure an AC current of a first conductor includes an outer coil having a first portion and a second portion. Each of the first and second portions are disposed about the first conductor passing through a center of the outer coil. The current sensor further includes an inner conductor disposed within the first and second portions of the outer coil and connected to each of the first and second portions of the outer coil.

公开(公告)号：US20170299637A1

公开(公告)日：2017-10-19

申请号：US15461359

申请日：2017-03-16

Applicant: LSIS CO., LTD.

Inventor： Jongkug SEON

IPC: G01R19/10 ,  G01R19/165 ,  H02H3/16

CPC classification number: G01R19/10 ,  G01R19/00 ,  G01R19/16528 ,  G01R19/16566 ,  G01R19/16571 ,  H02H3/16

Abstract: The analog signal detecting circuit comprises a reference voltage generator that outputs a plurality of reference voltages, the number of the reference voltages being varied depending on a voltage width between a minimum voltage value and a maximum voltage value of an analog signal; a plurality of comparators that compares a voltage of the analog signal with each of the plurality of reference voltages output from the reference voltage generator; a plurality of pulse generators that outputs a plurality of pulse signals having widths among the plurality of pulse signals varied depending on a frequency of the analog signal; and a combiner circuit section that outputs the pulse signals from the plurality of pulse generators by summing up.

公开(公告)号：US09717431B2

公开(公告)日：2017-08-01

申请号：US14872841

申请日：2015-10-01

Applicant: Ulrich Batzer ,  Peter Greif ,  Harald Karl

Inventor： Ulrich Batzer ,  Peter Greif ,  Harald Karl

IPC: A61B5/00 ,  A61B5/0408 ,  A61B5/08 ,  G01R19/10 ,  A61B5/0428

CPC classification number: A61B5/0408 ,  A61B5/0428 ,  A61B5/0809 ,  A61B5/7203 ,  A61B5/7225 ,  G01R19/10

Abstract: A differential voltage measuring system includes two electrodes that are connected to a patient at an input and make available a respective measurement contact at an output. A shunt resistor is connected in series with the second electrode. A first amplifier circuit has a first input for a first signal from the first electrode, a second input for a second signal from the second electrode, and an output. A second amplifier circuit has a first input that is connected in series with the shunt resistor, a second input that is connected in parallel with the shunt resistor, and an output. A first signal detection unit is provided at the output of the first amplifier circuit, and a second signal detection unit is provided at the output of the second amplifier circuit. The second signal detection unit detects the signal from the second amplifier circuit as a measurement variable.

公开(公告)号：US09702908B2

公开(公告)日：2017-07-11

申请号：US15015426

申请日：2016-02-04

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Amit Kumar Gupta ,  John Godsk Nielsen ,  Liang Yang

IPC: G01R19/165 ,  F02B63/04 ,  F03D7/02 ,  F03D7/04 ,  H02J3/26 ,  H02J3/38 ,  H02P9/04 ,  F03D7/00 ,  G01R19/10 ,  H02K7/18 ,  F03D9/25 ,  H02J3/00

CPC classification number: G01R19/16533 ,  F03D7/00 ,  F03D7/0284 ,  F03D7/042 ,  F03D9/255 ,  F03D9/257 ,  F05B2270/337 ,  G01R19/10 ,  H02J3/26 ,  H02J3/386 ,  H02J2003/001 ,  H02K7/183 ,  H02P9/04 ,  Y02E10/723 ,  Y02E10/725 ,  Y02E10/763 ,  Y02E40/50

Abstract: A method for operating a power generation system coupled to a power grid during a grid unbalance event, a method for determining an injection current to be supplied into a power grid by a power generation system, and a method for addressing an asymmetric grid fault in a power grid connected to a power generation system are provided. The methods may be carried out based on a reactive or an active power/current priority.

公开(公告)号：US20170131379A1

公开(公告)日：2017-05-11

申请号：US15348687

申请日：2016-11-10

Applicant: DENSO CORPORATION

Inventor： Ryuji OMATA ,  Yuri MURATA

IPC: G01R35/00 ,  G01R19/10 ,  B60L11/18 ,  H02P27/08 ,  H02P6/16 ,  B60L11/08 ,  G01R31/34 ,  G01R19/25

CPC classification number: G01R35/00 ,  B60L11/08 ,  B60L11/1803 ,  G01R19/10 ,  G01R19/2503 ,  G01R31/343 ,  G01R31/44 ,  H02P6/16 ,  H02P21/04 ,  H02P27/08 ,  H02P29/024

Abstract: In a diagnostic device, a determiner determines whether a rotational speed of an AC motor is within a low rotational-speed range in which its rotational speed is approximately zero. An input-voltage estimate calculator calculates, as an input-voltage estimate, an estimate of an input voltage to an inverter when it is determined that the rotational speed of the AC motor is within the low rotational-speed range. A malfunction determiner performs a diagnostic task. The diagnostic task calculates an absolute value of a difference between an input-voltage measurement value measured by an input voltage sensor and the input-voltage estimate. The diagnostic task determines whether the absolute value of the difference is higher than a predetermined voltage threshold. The diagnostic task determines that there is a malfunction in the input voltage sensor upon determining that the absolute value of the difference is higher than the predetermined voltage threshold.