Fiber optic linear position transducer

Details Fiber optic linear position transducer Fiber optic linear position transducer

1988-02-01

1989-10-03

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250237G, H01J 516, H01J 4014

Patent

active

048719072

ABSTRACT:
A system and method for detecting the positioning of an object wherein a driver generates an optical signal and intensity modulates the optical signal at a rate corresponding to the sum of N different frequencies. A transducer, responsive to relative physical positioning of the object, receives the intensity modulated optical signal and extracts a portion of the intensity modulated optical signal corresponding in intensity to selected ones of the N frequencies. A decoder, responsive to the extracted portion of the intensity modulated optical signal, generates a position signal according to the selected ones of the N frequencies in the extracted portion. The position signal is indicative of the relative positioning of the object with respect to the transducer.

REFERENCES:
patent: 4560271 (1985-12-01), Fumio
patent: 4761546 (1988-08-01), Ikari et al.

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