JPS57201948A - Safety circuit for computer for internal combustion engine control - Google Patents

Safety circuit for computer for internal combustion engine control

Info

Publication number
JPS57201948A
JPS57201948A JP56087141A JP8714181A JPS57201948A JP S57201948 A JPS57201948 A JP S57201948A JP 56087141 A JP56087141 A JP 56087141A JP 8714181 A JP8714181 A JP 8714181A JP S57201948 A JPS57201948 A JP S57201948A
Authority
JP
Japan
Prior art keywords
safety circuit
reset signal
combustion engine
internal combustion
computer
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
Application number
JP56087141A
Other languages
Japanese (ja)
Inventor
Teruo Nakada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Isuzu Motors Ltd
Original Assignee
Isuzu Motors Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Isuzu Motors Ltd filed Critical Isuzu Motors Ltd
Priority to JP56087141A priority Critical patent/JPS57201948A/en
Publication of JPS57201948A publication Critical patent/JPS57201948A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Debugging And Monitoring (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE:To prevent the malfunction of a controller due to noise by equipping a safety circuit with a frequency detecting circuit which detects the frequency of a reset signal, and then automatically stopping program control only when the reset signal is generated frequently. CONSTITUTION:When an internal combustion engine is normally under program control, no reset signal is outputted, so a safety circuit 10 is not in operation. If noise is generated and a program counter gets out of order, the program counter refers to an empty area, so the reset signal is outputted. Then, the safety circuit 10 is put in operation to turn off the switch 51 of a relay 50, and each actuator 3 is powered down, thus stopping the program control.
JP56087141A 1981-06-05 1981-06-05 Safety circuit for computer for internal combustion engine control Pending JPS57201948A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56087141A JPS57201948A (en) 1981-06-05 1981-06-05 Safety circuit for computer for internal combustion engine control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56087141A JPS57201948A (en) 1981-06-05 1981-06-05 Safety circuit for computer for internal combustion engine control

Publications (1)

Publication Number Publication Date
JPS57201948A true JPS57201948A (en) 1982-12-10

Family

ID=13906688

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56087141A Pending JPS57201948A (en) 1981-06-05 1981-06-05 Safety circuit for computer for internal combustion engine control

Country Status (1)

Country Link
JP (1) JPS57201948A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59162336A (en) * 1983-03-07 1984-09-13 Daihatsu Motor Co Ltd Violent running preventive device of engine idle
JPS62164101A (en) * 1986-01-14 1987-07-20 Koyo Seiko Co Ltd Safety device for controller of automobile

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59162336A (en) * 1983-03-07 1984-09-13 Daihatsu Motor Co Ltd Violent running preventive device of engine idle
JPS62164101A (en) * 1986-01-14 1987-07-20 Koyo Seiko Co Ltd Safety device for controller of automobile

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