JPS6426901A - Control output switch device for duplex system - Google Patents
Control output switch device for duplex systemInfo
- Publication number
- JPS6426901A JPS6426901A JP18230487A JP18230487A JPS6426901A JP S6426901 A JPS6426901 A JP S6426901A JP 18230487 A JP18230487 A JP 18230487A JP 18230487 A JP18230487 A JP 18230487A JP S6426901 A JPS6426901 A JP S6426901A
- Authority
- JP
- Japan
- Prior art keywords
- abnormality
- control output
- outputted
- abnormal signal
- main
- 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
Landscapes
- Safety Devices In Control Systems (AREA)
Abstract
PURPOSE:To surely prevent the mis-switching actions of the control output due to the abnormality of a main diagnosis part, by connecting a delay timer to a main system diagnosis part of the back-up system side to delay the abnormal signal of a main system. CONSTITUTION:The abnormality occurs at a main system diagnosis part 2 and the abnormal signal of a main system B is outputted mistakenly although the system B has actually no trouble. In such a case, the abnormal signal of the system B is held temporarily and not outputted by the function of on-delay timer 8. While a self-diagnosis part 1 of a back-up system A detects the abnormality of the part 2 itself for a set period of time of the timer 8. This abnormality detection output is supplied to an AND gate 9 and the misoutput of a switch 10 is blocked. Thus it is possible to avoid such a case where the control output 6 is outputted mistakenly from a control arithmetic part 3 via the switch 10 owing to the abnormality of the part 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18230487A JPS6426901A (en) | 1987-07-23 | 1987-07-23 | Control output switch device for duplex system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18230487A JPS6426901A (en) | 1987-07-23 | 1987-07-23 | Control output switch device for duplex system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6426901A true JPS6426901A (en) | 1989-01-30 |
Family
ID=16115949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18230487A Pending JPS6426901A (en) | 1987-07-23 | 1987-07-23 | Control output switch device for duplex system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6426901A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001056701A (en) * | 1999-07-15 | 2001-02-27 | Robert Bosch Gmbh | Method and device for mutually monitoring control units |
-
1987
- 1987-07-23 JP JP18230487A patent/JPS6426901A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001056701A (en) * | 1999-07-15 | 2001-02-27 | Robert Bosch Gmbh | Method and device for mutually monitoring control units |
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