Multiplexed autonomous sensors and monitoring system and associated methods
AssigneeWolff Controls Corporation
InventorsMarshall E. Smith JR., Richard W. Stettler
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Abstract
A sensor monitoring system and associated methods are provide that preferably include a plurality of sensors connected in parallel across a single pair of wires that include resistances of equal value placed in series between each sensor. This allows each sensor to measure the voltage dropped between itself and the monitoring system to determine its relative placement on the bus to autonomously assign itself a number to delineate to the monitoring system its relative location on the equipment or item being monitored. The sensors modulate their internal resistance to change the current on the bus to transmit their status to the monitoring system.
Claims1
A method of monitoring an electronic sensor, the method comprising:
- measuring a quiescent signal provided by a sensor positioned within an environment having an first temperature;
- measuring a dynamic signal from the sensor during operation of the sensor at a second temperature;
- comparing the quiescent signal to the dynamic signal for determining a change therebetween;
- and
- modifying a gain in the dynamic signal based on the change for providing a corrected dynamic signal.
Dependencies are inferred from the claim text.