JPS55103604A - Fault diagnosis system of digital control unit - Google Patents
Fault diagnosis system of digital control unitInfo
- Publication number
- JPS55103604A JPS55103604A JP1045879A JP1045879A JPS55103604A JP S55103604 A JPS55103604 A JP S55103604A JP 1045879 A JP1045879 A JP 1045879A JP 1045879 A JP1045879 A JP 1045879A JP S55103604 A JPS55103604 A JP S55103604A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- control unit
- digital control
- memory circuit
- deviation
- 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
- Testing And Monitoring For Control Systems (AREA)
Abstract
PURPOSE: To detect faults to prevent overrun of operation ends by providing a circuit, which detects rapid change of output signals, in a digital control unit.
CONSTITUTION: Output signal 3 of digital control unit 2 is fatched as inputs of signal memory circuit 11 and deviation detection circuit 12. Signal memory circuit 11 operates to update the output signal as fixed period T by the signal from counter 9. Deviation detection circuit 12 detects deviation between input signal 3 and memory circuit 5; and if the detected value is larger than set value 13, large-deviation signal 6 is issued. Signal 6 lights an indicator lamp, and further, inhibits update of memory circuit 11.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1045879A JPS55103604A (en) | 1979-02-02 | 1979-02-02 | Fault diagnosis system of digital control unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1045879A JPS55103604A (en) | 1979-02-02 | 1979-02-02 | Fault diagnosis system of digital control unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55103604A true JPS55103604A (en) | 1980-08-08 |
Family
ID=11750688
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1045879A Pending JPS55103604A (en) | 1979-02-02 | 1979-02-02 | Fault diagnosis system of digital control unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55103604A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5028746A (en) * | 1973-07-13 | 1975-03-24 |
-
1979
- 1979-02-02 JP JP1045879A patent/JPS55103604A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5028746A (en) * | 1973-07-13 | 1975-03-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS55103604A (en) | Fault diagnosis system of digital control unit | |
JPS5692643A (en) | Operational processor | |
JPS54126420A (en) | Safety confirming unit | |
JPS5495141A (en) | Fault detector | |
JPS55102062A (en) | Fail safe system | |
JPS5228298A (en) | Supervisory alarm unit by loop circuit system | |
JPS57758A (en) | Computer | |
JPS5621256A (en) | Control system for failure detection unit | |
JPS5549759A (en) | Signal processing system | |
JPS57139815A (en) | Fault diagnostic device | |
JPS5468136A (en) | Inspection unit for logic circuit | |
JPS52106260A (en) | Skip detection circuit of signal reception system | |
JPS547832A (en) | Central control unit | |
JPS55115129A (en) | Failure detection system for communication control unit | |
JPS5438535A (en) | Error alarm detector | |
JPS5362025A (en) | Trouble alarming device in air-fuel ratio control system | |
JPS5420625A (en) | Fault discrimination ststem of memory system | |
JPS55114031A (en) | Detector for pulse absence | |
JPS5441793A (en) | Leakage tester | |
JPS5640919A (en) | Temperature control unit | |
JPS5425642A (en) | Input and output control system | |
JPS5656785A (en) | Circumferential automatic welding equipment | |
JPS641974A (en) | Self-diagnosing circuit for indicator | |
JPS5648371A (en) | Reel cable winding defect detection system | |
JPS5350625A (en) | Error detecting system |