Monitoring apparatus for control system with microcomputer

Details Monitoring apparatus for control system with microcomputer Monitoring apparatus for control system with microcomputer

1989-04-07

1992-05-12

Clark, David L.

Excavating

371 12, 371 62, G06F 1128

Patent

active

051135043

ABSTRACT:
A monitoring apparatus for a control system including a microcomputer which can output a microcomputer reset signal only once or repeatedly if a program run pulse signal outputted from the microcomputer stops oscillating for longer than a first predetermined time interval T.sub.1 and an additional trouble detection command signal if the program run pulse signal stops oscillating for longer than a second predetermined time interval T.sub.2 which is longer than time interval T.sub.1. In response to this trouble detection command signal, an alarm lamp is lit up and/or the control system is disabled.

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BBC Publication No. DVK 123081D, "BBC-Elektronik Baureihe IC-V", part 3, issue Apr. 1981.
BBC-Publication DVK 131982 D, "Schiffsautomation MICAS, Automatische Fehlererkennung bei Mikrocomputern", (special print from BBC-Nachridten Oct. 1982, annual set 63, pp. 343-352).

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