Speed sensor for rotatable shaft using shaft mounted antenna

Details Speed sensor for rotatable shaft using shaft mounted antenna Speed sensor for rotatable shaft using shaft mounted antenna

1992-11-23

1995-10-17

O'Shea, Sandra L.

Electricity: measuring and testing

Electrical speed measuring

324166, 324176, 340671, 34087018, G01P 342

Patent

active

054593972

ABSTRACT:
Apparatus and method for detecting rotation of a shaft include a first antenna for transmitting electromagnetic energy into the shaft, a second antenna disposed for rotation with the shaft for modulating electromagnetic energy passing through the shaft in relation to the shaft rotational speed, and a detector for detecting the modulated electromagnetic energy that passes through the shaft.

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