Self-monitoring system for supervising congruence between contro

Details Self-monitoring system for supervising congruence between contro Self-monitoring system for supervising congruence between contro

1979-12-18

1982-10-12

Malzahn, David H.

Excavating

G06F 1116

Patent

active

043542700

ABSTRACT:
A system is disclosed which detects congruence and non-congruence between a plurality of control signals. In the event that non-congruence is detected, and such non-congruence lasts longer than a predetermined period of time, which period is a function of the response time of the mechanical elements whose functions are to be monitored, the system indicates the non-congruence and allows the machine to be shut down. The system is so designed that it monitors its own functions so as not to allow a machine to which it is connected to operate without a properly functioning supervisory system.

REFERENCES:
patent: 3781796 (1973-12-01), Smith
patent: 4096990 (1978-06-01), Strelow
patent: 4222515 (1980-09-01), Strelow
patent: 4225961 (1980-09-01), Raggenbass

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