JPS57139814A - Fault detecting circuit - Google Patents

Fault detecting circuit

Info

Publication number
JPS57139814A
JPS57139814A JP56025667A JP2566781A JPS57139814A JP S57139814 A JPS57139814 A JP S57139814A JP 56025667 A JP56025667 A JP 56025667A JP 2566781 A JP2566781 A JP 2566781A JP S57139814 A JPS57139814 A JP S57139814A
Authority
JP
Japan
Prior art keywords
fault
circuit
detected
correct answer
operating
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
JP56025667A
Other languages
Japanese (ja)
Inventor
Kiyoshi Murasawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56025667A priority Critical patent/JPS57139814A/en
Publication of JPS57139814A publication Critical patent/JPS57139814A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B9/00—Safety arrangements
    • G05B9/02—Safety arrangements electric

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Testing And Monitoring For Control Systems (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE:To execute the control without receiving a command from the outside, by storing in advance a correct answer of software operation for detecting and operating a fault of a machine, collating it with a result of operation, detecting whether a fault exists or not, and executing the switching control when its faulty state continues for a set time. CONSTITUTION:Software for detecting and operating a fault, and a correct answer of its operation are stored in a storing circuit 11, and the fault is detected and operated in accordance with operation clock by an operating circuit 12. A result of operation and the correct answer from the storing circuit 11 are collated by a collating circuit 13, and whether the fault exists or not is detected. When an output which has detected that the fault ''exists'' is continued for a set time, a signal is generated from a switching signal generating circuit 14, and an apparatus is controlled so as to be switched to the redundant system from the fundamental system by a changeover switch 15.
JP56025667A 1981-02-24 1981-02-24 Fault detecting circuit Pending JPS57139814A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56025667A JPS57139814A (en) 1981-02-24 1981-02-24 Fault detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56025667A JPS57139814A (en) 1981-02-24 1981-02-24 Fault detecting circuit

Publications (1)

Publication Number Publication Date
JPS57139814A true JPS57139814A (en) 1982-08-30

Family

ID=12172132

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56025667A Pending JPS57139814A (en) 1981-02-24 1981-02-24 Fault detecting circuit

Country Status (1)

Country Link
JP (1) JPS57139814A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50102783A (en) * 1974-01-25 1975-08-14

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50102783A (en) * 1974-01-25 1975-08-14

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