Temperature compensated tilt sensor

Details Temperature compensated tilt sensor Temperature compensated tilt sensor

1996-01-16

1997-10-28

Bennett, G. Bradley

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

G01C 906

Patent

active

056807082

ABSTRACT:
A new tilt sensor system is disclosed which provides substantial temperature independence and is very inexpensive to build and to operate. The apparatus is made up of a first source of a first alternating signal having an output impedance Rs1 and a second source of a second alternating signal which is equal in magnitude and 180 degrees out of phase with the first alternating signal, with the source of the second alternating signal having an output impedance Rs2. Also included is a tilt sensor having a first input terminal coupled to receive the first alternating signal, a second input terminal coupled to receive the second alternating signal, and an output terminal which provides an output signal in response to the first alternating signal and the second alternating signal. In the preferred mode, the tilt sensor has an impedance G1 between the first terminal and the output terminal and an impedance G2 between the second terminal and the output terminal. In addition, Rs1=Rs2 and Rs1 is

REFERENCES:
patent: 4521973 (1985-06-01), Wiklund et al.
patent: 5170567 (1992-12-01), Davis et al.
patent: 5381604 (1995-01-01), Heidel et al.
patent: 5552703 (1996-09-01), Hore
patent: 5612679 (1997-03-01), Burgess

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