Vehicle compass compensation

Details Vehicle compass compensation Vehicle compass compensation

2005-08-02

2005-08-02

Gutierrez, Diego (Department: 2859)

Geometrical instruments

Indicator of direction of force traversing natural media

Magnetic field responsive

C033S357000, C324S244000

Reexamination Certificate

active

06922902

ABSTRACT:
A compass compensation system is provided for automatically and continuously calibrating an electronic compass for a vehicle, without requiring an initial manual calibration or preset of the vehicle magnetic signature. The system initially adjusts a two axis sensor of the compass in response to a sampling of at least one initial data point. The system further calibrates the compass by sampling data points that are substantially opposite to one another on a plot of a magnetic field and averaging an ordinate of the data points to determine a respective zero value for the Earth magnetic field. The system also identifies a change in magnetic signature and adjusts the sensor assembly.

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European Search Report for European Application No. EP00650029 which is based on corresponding U.S. Appl. No. 09/540,702, filed on Mar. 31, 2000, entitled Vehicle Compass Compensation.

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