JPS5528109A - Failure detector for plant condition detector - Google Patents
Failure detector for plant condition detectorInfo
- Publication number
- JPS5528109A JPS5528109A JP9907678A JP9907678A JPS5528109A JP S5528109 A JPS5528109 A JP S5528109A JP 9907678 A JP9907678 A JP 9907678A JP 9907678 A JP9907678 A JP 9907678A JP S5528109 A JPS5528109 A JP S5528109A
- Authority
- JP
- Japan
- Prior art keywords
- detectors
- failure
- normal
- signal
- detector
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Abstract
PURPOSE:To increase the reliability of the detection signal offered to the system side, by supplying the normal detection signal from other normal detectors to the control system with alarming immediately, when either one of a plurality of detectors detecting the same conditions is in failure. CONSTITUTION:The pressure being one of the plant condition amount is detected at the detectors 1 and 2, the detection signals A and B are fed to the high value selectors 5 and 6 via the selector switches 3 and 4, and the high value is selected and it is fed to the adder 7. The adder 7 operates the signal in the gain of 1/2 and feeds normal signal to the control system. Further, the signal from the adder 7 and the detection signals A and B and are received at the subtractors 8 and 9 to perform subtraction and the result is fed to the comparators 10 and 11. When the detectors 1 and 2 are normal, the comparators 10 and 11 are not operated. if either one of the detectors is in failure, the comparator 10 or 11 is operated to perform alarm display with the operation of X or Y which is the ANN contact. The detector having a failure can be repaired in ON-line system.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9907678A JPS5528109A (en) | 1978-08-16 | 1978-08-16 | Failure detector for plant condition detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9907678A JPS5528109A (en) | 1978-08-16 | 1978-08-16 | Failure detector for plant condition detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5528109A true JPS5528109A (en) | 1980-02-28 |
Family
ID=14237819
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9907678A Pending JPS5528109A (en) | 1978-08-16 | 1978-08-16 | Failure detector for plant condition detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5528109A (en) |
-
1978
- 1978-08-16 JP JP9907678A patent/JPS5528109A/en active Pending
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