KR970016580A - AC voltage detection circuit for computer interface - Google Patents

AC voltage detection circuit for computer interface Download PDF

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Publication number
KR970016580A
KR970016580A KR1019950031947A KR19950031947A KR970016580A KR 970016580 A KR970016580 A KR 970016580A KR 1019950031947 A KR1019950031947 A KR 1019950031947A KR 19950031947 A KR19950031947 A KR 19950031947A KR 970016580 A KR970016580 A KR 970016580A
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KR
South Korea
Prior art keywords
converter
power
voltage
computer interface
voltage detection
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Application number
KR1019950031947A
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Korean (ko)
Inventor
김성정
Original Assignee
석진철
대우중공업 주식회사
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Application filed by 석진철, 대우중공업 주식회사 filed Critical 석진철
Priority to KR1019950031947A priority Critical patent/KR970016580A/en
Publication of KR970016580A publication Critical patent/KR970016580A/en

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Abstract

본 발명은 마이크로 컴퓨터를 이용한 각종 시험장비 개발시 피시험장비의 전원이 AC일 경우 피시험장비의 입력전원의 이상유무를 시험장비 컴퓨터에서 항상 별도의 장비없이 시험도중에 점검할 수 있고, 입력전원에 이상이 발생시 시험장비에서 직접 자동으로 경고(Warning) 처기 가능하며 또한 대용량 AC 전원의 전압 편차(Deviation) 및 트랜지언트(Transient) 특성 측정에 활용할 수 있도록 한 컴퓨터 인터페이스용 AC전압 검출회로에 관한 것으로, 본 발명의 구성은 피측정전원(R, S, T)에 의해 마이크로 컴퓨터가 영향을 받지 않도록 절연시키기 위한 측정전원 절연부(10)와; 교류전원을 직류전원으로 변환시키기 위한 AC/DC 전압 변환부(20)와; 아날로그 신호를 디지털신호로 변환시키기 위한 AD 컨버터부(30)로 이루어진다. 이와 같이 구성된 본 발명은 별도의 범용 전압계측장비, 컴퓨터인터페이스용 통신카드 및 인더페이스 케이블의 사용없이도 시험장비의 AC 전원전압을 검출할 수 있도록 함으로써 비용절감 뿐만 아니라 사용상의 편의성 및 작업에 따른 효율성을 보장할 수 있도록 하는데 그 특징이 있다.In the present invention, if the power of the equipment under test is AC when developing various test equipment using a microcomputer, the input power of the equipment under test can always be checked during the test without any equipment in the test equipment computer. It is an AC voltage detection circuit for computer interface that can be used to automatically warn in case of abnormality and to measure voltage deviation and transient characteristic of large capacity AC power supply. The configuration of the present invention includes: a measurement power supply insulator 10 for isolating the microcomputer from being affected by the power sources R, S, and T; An AC / DC voltage converter 20 for converting AC power into DC power; AD converter unit 30 for converting an analog signal into a digital signal. The present invention configured as described above can detect the AC power supply voltage of the test equipment without the use of a separate general-purpose voltage measurement equipment, a computer interface communication card, and an interface cable. It is characterized by the fact that it can be guaranteed.

Description

컴퓨터 인터페이스용 AC 전압 검출회로AC voltage detection circuit for computer interface

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

제2도는 본 발명의 컴퓨터 인터페이스용 AC 전압 검출회로를 통한 AC 전압 검출방법을 설명하기 위한 구성도,2 is a configuration diagram for explaining an AC voltage detection method through an AC voltage detection circuit for a computer interface of the present invention;

제3도는 본 발명의 컴퓨터 인터페이스용 AC 전압 검출회로도,3 is an AC voltage detection circuit diagram for a computer interface of the present invention;

제4도는 본 발명에 의한 AC 전압 검출회로의 AC/DC 전압 변환부의 각부 파형도.Figure 4 is a waveform diagram of each part of the AC / DC voltage conversion unit of the AC voltage detection circuit according to the present invention.

Claims (4)

컴퓨터 인터페이스용 AC 전압 검출회로에 있어서, 피측정전원(R, S, T)에 의해 마이크로 컴퓨터가 영향을 받지 않도록 절연시키기 위한 측정전원 절연부(10)와; 교류전원을 직류전원으로 변환시키기 위한 AC/DC 전압 변환부(20)와; 아날로그 신호를 디지털신호로 변환시키기 위한 A/D 컨버터부(30)로 구성됨을 특징으로 하는 컴퓨터 인터페이스용 AC 전압 검출회로.An AC voltage detection circuit for a computer interface, comprising: a measurement power source insulation section (10) for isolating the microcomputer from being affected by the power sources (R, S, T) to be measured; An AC / DC voltage converter 20 for converting AC power into DC power; An AC voltage detection circuit for a computer interface, comprising: an A / D converter unit 30 for converting an analog signal into a digital signal. 제1항에 있어서, 상기 측정전원 절연부(10)는 피측정전원(R, S, T)중 R상에 직렬저항(R1, R4) 및 S상에 직렬저항(R2, R5) 그리고 T상에 직렬저항(R3, R6)이 연결되어 함께 각 절연 오피앰프(U1~ U3)의 공통 단자(COM)에 연결되고, 직렬저항(R1, R4)사이가 절연 오피앰프(U1)의 입력단자(IN)에, 직렬저항(R2, R5)사이가 절연 오피앰프(U2)의 입력단자(IN)에, 그리고, 직렬저항(R3, R6)사이가 절연 오피앰프(U3)의 입력단자(IN)에 각각 연결됨을 특징으로 하는 컴퓨터 인터페이스용 AC 전압 검출회로.According to claim 1, wherein the measuring power source insulation section 10 is a series resistor (R1, R4) and the S phase R (R2, R5) and the T phase of the R phase of the power source (R, S, T) to be measured. The series resistors R3 and R6 are connected to each other, and are connected together to the common terminal COM of each of the insulated op amps U1 to U3, and the series resistors R1 and R4 are connected to the input terminal of the insulated op amp U1. IN, between the series resistors R2 and R5 is the input terminal IN of the insulated op amp U2, and between the series resistors R3 and R6 is the input terminal IN of the insulated op amp U3. AC voltage detection circuitry for a computer interface, each connected to a. 제1항에 있어서, 상기 AC/DC 전압 변환부(20)는 오피앰프(OP1, OP2), 저항 (R7~R15), 콘덴서(C1) 및 다이오드(D1~D4)로 이루어져 측정전원 절연부(10)의 각 절연 오피앰프(U1~U3)의 출력 단자(OUT)가 각 오피앰프(OP1)의 반전단자(-)에 연결되도록 이루어진 AC/DC 전압 변환회로(21~23)로 구성됨을 특징으로 하는 컴퓨터 인터페이스용 AC 전압 검출회로.The method of claim 1, wherein the AC / DC voltage converter 20 includes op amps OP1 and OP2, resistors R7 to R15, capacitors C1, and diodes D1 to D4. The output terminal OUT of each of the insulation op amps U1 to U3 of 10) is configured as an AC / DC voltage conversion circuit 21 to 23 configured to be connected to the inverting terminal (-) of each op amp OP1. AC voltage detection circuit for computer interface. 제1항에 있어서, 상기 A/D 컨버터부(30)는 A/D 컨버터(U4)와 컨버터(U5)가 직렬연결되어 상기 AC/DC 전압 변환부(20)의 각 오피앰프(OP2)의 출력이 A/D 컨버터(U4)에 입력되도록 연결된 A/D 컨버터회로(31~33)로 구성됨을 특징으로 하는 컴퓨터 인터페이스용 AC 전압 검출회로.The A / D converter unit 30 of claim 1, wherein the A / D converter U4 and the converter U5 are connected in series to each other of the op amp OP2 of the AC / DC voltage converter 20. AC voltage detection circuit for a computer interface, characterized in that the output is composed of A / D converter circuits (31 to 33) connected to be input to the A / D converter (U4). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950031947A 1995-09-26 1995-09-26 AC voltage detection circuit for computer interface KR970016580A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950031947A KR970016580A (en) 1995-09-26 1995-09-26 AC voltage detection circuit for computer interface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950031947A KR970016580A (en) 1995-09-26 1995-09-26 AC voltage detection circuit for computer interface

Publications (1)

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KR970016580A true KR970016580A (en) 1997-04-28

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KR1019950031947A KR970016580A (en) 1995-09-26 1995-09-26 AC voltage detection circuit for computer interface

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