Digital control system monitor having a predetermined output und

Details Digital control system monitor having a predetermined output und Digital control system monitor having a predetermined output und

1982-05-26

1984-10-16

Smith, Jerry

Boots, shoes, and leggings

371 25, 371 62, 371 68, G06F 1100

Patent

active

044778708

ABSTRACT:
An electrical control system monitor includes a microprocessor which conducts a series of control and test functions and outputs a sequence of data words which are representative of the operating status of the system being monitored and the monitor itself. This sequence of data words is fed to a comparator along with a second sequence of data words. Corresponding data words from the two sequences are presented to the comparator during successive partially overlapping time intervals. The comparator produces a given logic level output when its inputs agree and a second given logic level output when its inputs disagree. If the comparator output does not oscillate in a prescribed manner, the output of the monitor is forced into a predetermined output state.

REFERENCES:
patent: 3521172 (1970-07-01), Harmon
patent: 4107253 (1978-08-01), Borg et al.
patent: 4122995 (1978-10-01), Franke
patent: 4255809 (1981-03-01), Hillman

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