Self-powered wireless sensor assembly for sensing angular...

Details Self-powered wireless sensor assembly for sensing angular... Self-powered wireless sensor assembly for sensing angular...

2006-04-04

2006-04-04

McCall, Eric S. (Department: 2855)

Measuring and testing

Test stand

For engine

C073S117020

Reexamination Certificate

active

07021127

ABSTRACT:
A self-powered, wireless sensor assembly is provided for sensing crankshaft position of an engine comprising a rotatable flywheel having a ring gear. The sensor assembly includes an electromagnetic sensor responsive to structural features on the ring gear when the ring gear rotates. A power supply is coupled to generate a direct current in response to the output signal from the electromagnetic sensor. A transceiver is coupled to one of the following sensors: a magnetostatic sensor energized by the power supply and responsive to the structural features on the ring gear to generate an output signal when the ring gear rotates, and the electromagnetic sensor. The transceiver is configured to wirelessly transmit the output signal from that one sensor, wherein the output signal from that one sensor comprises information indicative of the instantaneous speed of said engine.

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patent: WO 98/11356 (1998-03-01), None

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