Microwave oscillator position sensor

Details Microwave oscillator position sensor Microwave oscillator position sensor

1990-10-09

1992-03-17

Grimm, Siegfried H.

Oscillators

With device responsive to external physical condition

324327, 331107SL, 331117D, 340671, 340686, G01V 308, H03B 518

Patent

active

050972278

ABSTRACT:
A microwave oscillator circuit having an antenna, wherein the effective reactive impedance of the oscillator circuit is altered by the movement of a reactive impedance changing element past the antenna to cause change of the oscillation condition of the oscillator. A change in oscillation condition is sensed and sent to a utilization device to determine speed and/or position. The utilization device can be a computer which receives a signal from a wheel speed determining system, wherefrom a signal is sent back to a braking system for the wheel to control braking thereof. This can be accomplished individually for each of the four wheels to provide an anti-locking braking system.

REFERENCES:
patent: 4173755 (1979-11-01), Butler
patent: 4475089 (1984-10-01), Kahuke

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