System for determining failure of remote sensing device

Details System for determining failure of remote sensing device System for determining failure of remote sensing device

1996-09-03

1998-02-10

Mullen, Thomas

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340447, B60C 2300

Patent

active

057173761

ABSTRACT:
A system for detecting failure in one of a plurality of remote sensing devices utilizes a plurality of counters, each associated with one of the remote sensing devices. Each counter is initially loaded with an initial value. When a signal is received from a remote sensing device, its associated counter is reset to the initial value while the counters of the other remote sensing devices are stepped down. If a sensing device does not send a signal, its associated counter is stepped down numerous times, but never reset to the initial value. When a counter reaches a pre-determined value, typically zero, the associated sensing device is deemed to have failed.

REFERENCES:
patent: 4334428 (1982-06-01), Fima et al.
patent: 4501006 (1985-02-01), Korenberg
patent: 5170343 (1992-12-01), Matsuda
patent: 5285189 (1994-02-01), Nowicki et al.
patent: 5627751 (1997-05-01), Davis et al.

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