Monitoring system and technique

Details Monitoring system and technique Monitoring system and technique

1995-04-12

1998-05-26

Trammell, James P.

Boots, shoes, and leggings

340538, G08B 108, H04Q 130

Patent

active

057576726

ABSTRACT:
The operability of a plurality of sensors is monitored by periodically interrogating the sensors individually and evaluating the responses to the interrogation. The sensors are each connected to a two-conductor power supply bus via a signal processor and an interface. The information exchanged via the bus is in the form of binary coded signals generated by clocking the bus voltage.

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"Photoelectric Sensor has Heartbeat Diagnostics" p. 95 New in Control Control Engineering May 1994 North Amer. Ed.

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