KR960035035A - Current measuring device with temperature characteristic compensation - Google Patents

Current measuring device with temperature characteristic compensation Download PDF

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Publication number
KR960035035A
KR960035035A KR1019950006359A KR19950006359A KR960035035A KR 960035035 A KR960035035 A KR 960035035A KR 1019950006359 A KR1019950006359 A KR 1019950006359A KR 19950006359 A KR19950006359 A KR 19950006359A KR 960035035 A KR960035035 A KR 960035035A
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KR
South Korea
Prior art keywords
current
temperature
current measuring
circuit section
sensor
Prior art date
Application number
KR1019950006359A
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Korean (ko)
Inventor
김상복
Original Assignee
이종수
Lg 산전 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 이종수, Lg 산전 주식회사 filed Critical 이종수
Priority to KR1019950006359A priority Critical patent/KR960035035A/en
Publication of KR960035035A publication Critical patent/KR960035035A/en

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Abstract

본 발명은 온도특성 보상기능을 갖는 전류측정 장치에 관한 것이다.The present invention relates to a current measuring device having a temperature characteristic compensation function.

종래의 전류측정 장치는 주위온도 변화에 따른 전류센서의 출력전압 특성보상 기능이 없으므로 정확한 전력 요금계산 및 효율적인 전력관리가 이루어 질수 없을을 감안하여 본 발명은 전류공급회로, 미소전압이 유기되는 전류센서, 상기 전압신호를 증폭하는 전압변환 회로로 구성된 전류측정 회로부와 전류공급회로, 온도센서, 안정된 신호로 증폭하는 전압변환 회로로 구성된 온도측정 회로부와, 아날로그 신호를 2진데이타로 변환하는 아날로그/디지탈 변환회로부와 롬에 저장되어 있는 전류센서와 온도센서의 출력특성 룩-업 테이블의 값과 비교해서 전류센서에 의해서 측정된 전압 신호의 오차를 보상하는 마이컴으로 구성하여 정밀도가 높은 측정전류값을 이용하기 때문에 정확한 전력산출이 가능한다.Conventional current measuring device has no function of compensating the output voltage characteristics of the current sensor according to the change of ambient temperature, so the present invention is not limited to accurate power rate calculation and efficient power management. And a current measuring circuit part comprising a voltage converting circuit for amplifying the voltage signal, a current measuring circuit part comprising a current supply circuit, a temperature sensor, and a voltage converting circuit for amplifying a stable signal, and analog / digital converting an analog signal into binary data. It uses a high-precision measurement current value by compensating for the error of the voltage signal measured by the current sensor by comparing the output characteristic look-up table values of the current sensor and temperature sensor stored in the conversion circuit and ROM. Therefore, accurate power calculation is possible.

Description

온도특성 보상기능을 갖는 전류측정장치Current measuring device with temperature characteristic compensation

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명의 온도특성 보상기능을 갖는 전류측정 장치의 구성블록도, 제3도는 본 발명에 따른 전류별 출력전압 특성곡선.2 is a block diagram of a current measuring device having a temperature characteristic compensation function of the present invention, and FIG. 3 is an output voltage characteristic curve for each current according to the present invention.

Claims (1)

1차측에 흐르는 관통전류로 인해서 2차측에 걸린 부하에 의해 전류센서(Current Transformer:CT)에 유기되는 미소전압 신호를 증폭하는 전류측정 회로부와, 주변온도에 따라 저항값이 변화되는 온도센서에 흐르는 전류에 의해 발생되는 전압차를 안정된 신호로 증폭하는 온도측정 회로부와, 상기 전류측정 회로부와 온도측정 회로부에서 측정된 아날로그 데이타를 설정된 기준전압과 축차비교 방법으로 2진 데이타로 변환하는 아날로그/디지탈 변환회로부와, 상기 아날로그/디지탈 변환회로부의 디지탈 출력신호를 롬에 저장되어 있는 전류센서와 온도센서의 출력특성 룩-업 테이블의 값과 비교해서 전류센서에 의해서 측정된 전류값의 오차를 보상하는 마이컴으로 구성됨을 특징으로 하는 온도특성 보상기능을 갖는 전류측정장치.The current measuring circuit unit amplifies the micro voltage signal induced by the current transformer (Current Transformer) by the load on the secondary side due to the through-current flowing on the primary side, and the temperature sensor that changes the resistance value according to the ambient temperature. A temperature measurement circuit section for amplifying the voltage difference generated by the current into a stable signal, and analog / digital conversion for converting analog data measured by the current measurement circuit section and the temperature measurement circuit section into binary data using a predetermined reference voltage and a sequential comparison method. Micom which compensates the error of the current value measured by the current sensor by comparing the digital output signal of the circuit section and the analog / digital conversion circuit section with the values of the output characteristic look-up table of the current sensor and the temperature sensor stored in the ROM. Current measuring device having a temperature characteristic compensation function, characterized in that consisting of. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950006359A 1995-03-24 1995-03-24 Current measuring device with temperature characteristic compensation KR960035035A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950006359A KR960035035A (en) 1995-03-24 1995-03-24 Current measuring device with temperature characteristic compensation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950006359A KR960035035A (en) 1995-03-24 1995-03-24 Current measuring device with temperature characteristic compensation

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KR960035035A true KR960035035A (en) 1996-10-24

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100618569B1 (en) * 2004-10-21 2006-08-31 엘에스산전 주식회사 Watt-hour meter and method with temperature sensor
KR101013125B1 (en) * 2008-07-09 2011-02-14 안영진 current measurement sensor using temperature and oscillation and method thereof
KR101601516B1 (en) * 2014-10-28 2016-03-08 현대자동차주식회사 Current sensing device
KR20160059204A (en) * 2014-11-18 2016-05-26 현대모비스 주식회사 Battery sensor for vehicle and mehtod for compensating error of shunt resistor comprised in the sensor
KR101975856B1 (en) * 2018-01-23 2019-05-08 신정원 Smart current sensor and offset compensation method of smart cruuent sensor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100618569B1 (en) * 2004-10-21 2006-08-31 엘에스산전 주식회사 Watt-hour meter and method with temperature sensor
KR101013125B1 (en) * 2008-07-09 2011-02-14 안영진 current measurement sensor using temperature and oscillation and method thereof
KR101601516B1 (en) * 2014-10-28 2016-03-08 현대자동차주식회사 Current sensing device
US9632118B2 (en) 2014-10-28 2017-04-25 Hyundai Motor Company Current sensing device and method using current transformer
KR20160059204A (en) * 2014-11-18 2016-05-26 현대모비스 주식회사 Battery sensor for vehicle and mehtod for compensating error of shunt resistor comprised in the sensor
KR101975856B1 (en) * 2018-01-23 2019-05-08 신정원 Smart current sensor and offset compensation method of smart cruuent sensor

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