Digitized pickoff system

Details Digitized pickoff system Digitized pickoff system

1982-02-08

1984-08-07

Chin, Gary

Boots, shoes, and leggings

364559, 73517B, 74 56D, G01P 1508

Patent

active

044647212

ABSTRACT:
A digitized pickoff system is provided for sensing displacement of complementary elements of a dual element pickoff assembly in an inertial sensor for use in an inertial navigation system comprising a relaxation oscillator adapted to sequentially select each of the pickoff elements with the reactance of the selected element determining the oscillating frequency thereof, a data converter adapted to measure the oscillating period thereof, and logic means having an output of a digital number which is proportional to the difference of oscillator periods of the two elements of the dual element pickoff assembly and which is a digital representation of the pickoff displacement.

REFERENCES:
patent: 3707091 (1972-12-01), Morris et al.
patent: 3782205 (1974-01-01), Fletcher et al.
patent: 3797320 (1974-03-01), Clampitt
patent: 3797321 (1974-03-01), Morris
patent: 3913406 (1975-10-01), Johnson
patent: 4329884 (1982-05-01), Ferriss
patent: 4386535 (1983-06-01), Albert
patent: 4417234 (1983-11-01), McKenna

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