KR900008389A - Analog output protection circuit due to malfunction of microprocessor - Google Patents

Analog output protection circuit due to malfunction of microprocessor Download PDF

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Publication number
KR900008389A
KR900008389A KR1019880015385A KR880015385A KR900008389A KR 900008389 A KR900008389 A KR 900008389A KR 1019880015385 A KR1019880015385 A KR 1019880015385A KR 880015385 A KR880015385 A KR 880015385A KR 900008389 A KR900008389 A KR 900008389A
Authority
KR
South Korea
Prior art keywords
analog output
data
output
buffer
malfunction
Prior art date
Application number
KR1019880015385A
Other languages
Korean (ko)
Inventor
신상근
고택범
Original Assignee
이희종
금성산전 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.)
Filing date
Publication date
Application filed by 이희종, 금성산전 주식회사 filed Critical 이희종
Priority to KR1019880015385A priority Critical patent/KR900008389A/en
Publication of KR900008389A publication Critical patent/KR900008389A/en

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Abstract

내용 없음.No content.

Description

마이크로프로세서의 오동작에 따른 아날로그 출력 보호회로Analog output protection circuit due to malfunction of microprocessor

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

제3도는 본 발명 아날로그 출력 보호회로도,3 is an analog output protection circuit diagram of the present invention;

제4도의 (가) 내지(다)는 본 발명 아날로그 출력 보호 회로의 데이타 수용에 대한 파형도.4A to 4C are waveform diagrams for accepting data of the analog output protection circuit of the present invention.

Claims (1)

아날로그 출력으로 설비제어시스템을 제어하는 아날로그 출력회로에 있어서, 데이타 클럭 공급에 따라 프로세서부(11)의 출력 데이타(D1-Dn)를 수용한 버퍼(12)의 출력데이타(A1-An)가 선택기(14)와 연산처리부(16)에 인가되며, 상기 버퍼(12)의 이전 출력데이타(A1-An)를 수용한 버퍼(13)의 출력 데이타(B1-Bn)가 상기 선택기(14)와 연산처리부(16)에 인가되어 감산처리되며, 상기 연산처리부(16)의 출력데이타(P1-Pn)가 비교기(17)에 인가되어 설정값스위치(18)의 설정데이타(Q1-Qn)와 비교되며, 이의 출력이 상기 데이타 클럭과 함께 앤드게이트(AND1)를 통해 상기 버퍼(13)의 클럭공급을 제어함과 아울러 상기 선택기(14)를 제어하여, 아날로그 출력값을 선택하는 것을 특징으로 하는 마이크로프로세서의 오동작에 따른 아날로그 출력 보호회로.In the analog output circuit which controls the facility control system with the analog output, the output data A1-An of the buffer 12 which receives the output data D1-Dn of the processor unit 11 according to the data clock supply is selected. (14) and the output data (B1-Bn) of the buffer 13, which is applied to the arithmetic processing unit 16, and accommodates the previous output data A1-An of the buffer 12, the arithmetic operation with the selector 14. Is applied to the processing unit 16 and subtracted, and the output data P1-Pn of the operation processing unit 16 is applied to the comparator 17 to be compared with the setting data Q1-Qn of the setting value switch 18. In addition, the output thereof controls the clock supply of the buffer 13 through an AND gate AND1 together with the data clock, and controls the selector 14 to select an analog output value. Analog output protection circuit due to malfunction. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019880015385A 1988-11-22 1988-11-22 Analog output protection circuit due to malfunction of microprocessor KR900008389A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019880015385A KR900008389A (en) 1988-11-22 1988-11-22 Analog output protection circuit due to malfunction of microprocessor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019880015385A KR900008389A (en) 1988-11-22 1988-11-22 Analog output protection circuit due to malfunction of microprocessor

Publications (1)

Publication Number Publication Date
KR900008389A true KR900008389A (en) 1990-06-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880015385A KR900008389A (en) 1988-11-22 1988-11-22 Analog output protection circuit due to malfunction of microprocessor

Country Status (1)

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KR (1) KR900008389A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980015425A (en) * 1996-08-21 1998-05-25 김광호 Initial value output circuit of digital-to-analog converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980015425A (en) * 1996-08-21 1998-05-25 김광호 Initial value output circuit of digital-to-analog converter

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