Calibration and compensation of an electronic compass system

Details Calibration and compensation of an electronic compass system Calibration and compensation of an electronic compass system

1992-05-13

1992-11-10

Cuchlinski, Jr., William A.

Geometrical instruments

Indicator of direction of force traversing natural media

Magnetic field responsive

33361, 324245, 324247, 324253, G01C 1738

Patent

active

051613115

ABSTRACT:
An electronic compass for use in a vehicle includes compensation for attaining a high degree of accuracy without operator intervention or the need to drive the vehicle in a deliberate circular path. An automatic method for accurately determining maximum and minimum voltage values from a flux gate sensor having orthogonal sensing windings is provided that operates continuously to adjust for required changes in both the offset and gain compensation factors. The flux gate sensor is further mounted within the vehicle such that the axis of one of the sensing windings is positioned approximately 45.degree. with respect to the vehicle's longitudinal direction. The angled mounting of the sense winding axis results in strong sensing signals when travelling on most roads. The electronic compass further provides visual representation on the outer peripheral segments of an alphanumeric display to prompt the operator to drive in a circle during a manual compensation mode. Furthermore, the same software is used during both the manual and automatic operating modes.

REFERENCES:
patent: 4402142 (1983-09-01), Dinsmore
patent: 4418480 (1983-12-01), Garner
patent: 4429469 (1984-02-01), Tsushima et al.
patent: 4455279 (1984-05-01), Tsushima et al.
patent: 4480226 (1984-10-01), Kuno et al.
patent: 4497034 (1985-01-01), Kuno et al.
patent: 4535547 (1985-08-01), Kurihara et al.
patent: 4546551 (1985-10-01), Franks
patent: 4622754 (1986-11-01), Chujo et al.
patent: 4673878 (1987-06-01), Tsushima et al.
patent: 4677381 (1987-06-01), Geerlings
patent: 4782453 (1988-11-01), Bauer et al.
patent: 4929899 (1990-05-01), Weixelman et al.
patent: 4953305 (1990-09-01), VanLente et al.
Farr, C. T. and Anstey, E. A. R., "Reduction of Errors in Magnetic Aspect Sensors by a System of Ground Calibration", Royal Aircraft Establishment Technical Report No. 66092; Mar. 1966.
Garner, D., "A Magnetic Heading Reference for the Electro Fluidic Autopilot, Parts I & II"; Sport Aviation; Nov./Dec. 1981.

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