JPS6488801A - Safety device for electronic control circuit - Google Patents
Safety device for electronic control circuitInfo
- Publication number
- JPS6488801A JPS6488801A JP24670787A JP24670787A JPS6488801A JP S6488801 A JPS6488801 A JP S6488801A JP 24670787 A JP24670787 A JP 24670787A JP 24670787 A JP24670787 A JP 24670787A JP S6488801 A JPS6488801 A JP S6488801A
- Authority
- JP
- Japan
- Prior art keywords
- cpu
- output
- state
- electronic control
- monitoring
- 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.)
- Granted
Links
Abstract
PURPOSE:To prevent a controlled system from falling to an undesirable state by storing the monitoring result of a monitoring circuit of input/output states of an electronic control circuit CPU to control the output gate of the CPU and monitoring the gate control output by the CPU. CONSTITUTION:A required control output is supplied to output gates AG1-AG3 from the electronic control circuit CPU in accordance with inputs from clutch, set, resume, and brake switches SW2-SW6, etc. Simultaneously, outputs of switches SW4 and SW5 are processed by a NAND gate NAND 1 to monitor the input/output state of the CPU and an R-S FF is set to store the monitoring result. Gates AG1-AG3 are opened by the Q' output L signal of the FF, and the Q' output is supplied to the CPU also to monitor whether the state of the monitoring circuit is monitored by the CPU. Consequently, the state of the monitoring circuit which monitors the input/output state of the CPU is monitored by the CPU to prevent the controlled system from falling to an undesirable state.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24670787A JPH0827641B2 (en) | 1987-09-30 | 1987-09-30 | Safety device for electronic control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24670787A JPH0827641B2 (en) | 1987-09-30 | 1987-09-30 | Safety device for electronic control circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6488801A true JPS6488801A (en) | 1989-04-03 |
JPH0827641B2 JPH0827641B2 (en) | 1996-03-21 |
Family
ID=17152440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24670787A Expired - Fee Related JPH0827641B2 (en) | 1987-09-30 | 1987-09-30 | Safety device for electronic control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0827641B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6341862B1 (en) | 1995-03-31 | 2002-01-29 | Canon Kabushiki Kaisha | Color filter, method of producing the same and liquid crystal display device |
-
1987
- 1987-09-30 JP JP24670787A patent/JPH0827641B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6341862B1 (en) | 1995-03-31 | 2002-01-29 | Canon Kabushiki Kaisha | Color filter, method of producing the same and liquid crystal display device |
Also Published As
Publication number | Publication date |
---|---|
JPH0827641B2 (en) | 1996-03-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |