Arrangement for testing a watchdog circuit

Details Arrangement for testing a watchdog circuit Arrangement for testing a watchdog circuit

1994-10-14

1996-05-28

Beausoliel, Jr., Robert W.

Excavating

371 3, 371 62, 39518505, 3642679, 364270, 3642645, G06F 1100

Patent

active

055220401

ABSTRACT:
The invention relates to an arrangement for testing a watchdog circuit wherein the pulses of a microcomputer to be monitored by the watchdog circuit are incrementally lengthened until the watchdog circuit responds and emits a corresponding reset signal to the microcomputer. The operational test of the watchdog circuit is repeated after each cold start of the microcomputer. This arrangement is especially suited for systems relevant to safety wherein the functional reliability of the individual components such as microcomputer and actuating elements are to be monitored.

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patent: 5073853 (1991-12-01), Johnson
patent: 5303390 (1994-04-01), Little
patent: 5341497 (1994-08-01), Younger

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