Electronic compass

Details Electronic compass Electronic compass

2005-02-08

2005-02-08

Nguyen, Thu V. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Navigation

With indicated course correction

C702S092000, C073S001760, C033S319000

Reexamination Certificate

active

06853918

ABSTRACT:
An electronic compass comprises a saturable core sensor (2) with a core (3) made of ferromagnetic material surrounded by an electric winding (3′), a first couple of electric windings (4, 5) around the sensor (2) having reciprocally orthogonal turns, a second couple of electric windings (8, 9) around said first couple (4, 5) having reciprocally orthogonal turns. The gap between the winding (3′) and the first couple of windings (4, 5) and between the first couple of windings (4, 5) and the second couple of windings (8, 9) is filled with a material having a low thermal expansion coefficient, preferably epoxy fiberglass reinforced plastic, supporting the windings of said first (4, 5) and second (8, 9) couple of windings. It is also provided an electronic control circuit (20, 21, 22).

REFERENCES:
patent: 3895869 (1975-07-01), Lewis
patent: 4157619 (1979-06-01), Zuvela
patent: 4262427 (1981-04-01), Lynch et al.
patent: 5339246 (1994-08-01), Kao
patent: 5564194 (1996-10-01), Fujita et al.
patent: 0087890 (1983-02-01), None
patent: 2044460 (1979-10-01), None

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