KR960018596A - Disconnection detection circuit of analog input signal - Google Patents
Disconnection detection circuit of analog input signal Download PDFInfo
- Publication number
- KR960018596A KR960018596A KR1019940031018A KR19940031018A KR960018596A KR 960018596 A KR960018596 A KR 960018596A KR 1019940031018 A KR1019940031018 A KR 1019940031018A KR 19940031018 A KR19940031018 A KR 19940031018A KR 960018596 A KR960018596 A KR 960018596A
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- KR
- South Korea
- Prior art keywords
- disconnection detection
- unit
- detection circuit
- disconnection
- voltage
- Prior art date
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- Amplifiers (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
본 발명은 아날로그 전압신호의 입력부 중 온도센서 또는 외부 보상도선의 단선을 검출하는데 적당한 아날로그 입력신호 단선검출회로에 관한 것으로 특히, 기존의 단선검출회로에 설치된 아날로그 전압 입력부는 상기 열전대 신호 전송부의 두 출력단에 두개의 저항(R1,R2)을 각각 직렬 연결시켜 구성하고, 상기 단선검출 회로부는 증폭회로부의 정극성 입력단자(+)와 기준전압(Vr) 사이에 두개의 직렬 저항(R3,R4)을 연결하고 이 저항(R3,R4)의 접속점은 분압저항(R5)을 통해 접지에 연결하며 상기 증폭회로부의 부극성입력단자(-)는 단선검출용 저항(R6)을 통해 접지시키는 구성으로 형성시켜 기준전압에 의해 발생되는 오차전압을 최소로 줄일 수 있도록 하므로써 제품의 신뢰도를 대폭 향상시킬 수 있는 것이다.The present invention relates to an analog input signal disconnection detection circuit suitable for detecting disconnection of a temperature sensor or an external compensation wire among the input parts of an analog voltage signal. In particular, an analog voltage input unit installed in an existing disconnection detection circuit is provided at two output terminals of the thermocouple signal transmitter. Two resistors R1 and R2 are connected in series to each other, and the disconnection detecting circuit unit connects two series resistors R3 and R4 between the positive input terminal (+) and the reference voltage Vr of the amplifying circuit unit. The connection points of the resistors R3 and R4 are connected to the ground through the voltage divider R5, and the negative input terminal (-) of the amplification circuit part is grounded through the disconnection detection resistor R6. By reducing the error voltage generated by the reference voltage to a minimum, the reliability of the product can be greatly improved.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제2도는 본 발명의 단선검출 회로도,2 is a disconnection detection circuit diagram of the present invention;
제3도는 본 발명을 설명하기 위한 단선검출 인지 프로그램 플로우챠트.3 is a flow chart detecting program flow chart for explaining the present invention.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940031018A KR0172803B1 (en) | 1994-11-24 | 1994-11-24 | Disconnection detection circuit for analog input signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940031018A KR0172803B1 (en) | 1994-11-24 | 1994-11-24 | Disconnection detection circuit for analog input signal |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960018596A true KR960018596A (en) | 1996-06-17 |
KR0172803B1 KR0172803B1 (en) | 1999-03-30 |
Family
ID=19398845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940031018A KR0172803B1 (en) | 1994-11-24 | 1994-11-24 | Disconnection detection circuit for analog input signal |
Country Status (1)
Country | Link |
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KR (1) | KR0172803B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10627438B2 (en) | 2015-12-23 | 2020-04-21 | Mando-Hella Electronics Corporation | Circuit fault detection system and control method thereof |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20170003757U (en) | 2016-04-22 | 2017-11-01 | 최해용 | High-definition 2D/3D Combination Projector Systemm |
-
1994
- 1994-11-24 KR KR1019940031018A patent/KR0172803B1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10627438B2 (en) | 2015-12-23 | 2020-04-21 | Mando-Hella Electronics Corporation | Circuit fault detection system and control method thereof |
Also Published As
Publication number | Publication date |
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KR0172803B1 (en) | 1999-03-30 |
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