Integrated tilt sensor

Details Integrated tilt sensor Integrated tilt sensor

2007-08-14

2007-08-14

Fulton, Christopher W (Department: 2859)

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

C033S366250

Reexamination Certificate

active

11106027

ABSTRACT:
A tilt sensor having a printed circuit board disposed in a direction normal to a reference plane for measuring a tilt angle with a pair of electrodes formed on a first surface of the printed circuit board. A cover is affixed to the printed circuit board and creates a cavity between the cover and the printed circuit board with a predetermined gap between the cover and the pair of electrodes, the cover acting as a common electrode to the pair of electrodes to create a pair of capacitors. An inert liquid is contained in the cavity, the surface level of the inert fluid varying according to the tilt angle of the reference plane. A signal processing circuit is formed on a second surface of the printed circuit board that produces an output signal corresponding to a difference in capacitance between the two capacitors as a tilt angle detection output.

REFERENCES:
patent: 5083383 (1992-01-01), Heger
patent: 5627316 (1997-05-01), De Winter et al.
patent: 6351892 (2002-03-01), Mercer et al.
patent: 6625896 (2003-09-01), Olson
patent: 6993849 (2006-02-01), Campbell et al.

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