Compass precalibration method

Details Compass precalibration method Compass precalibration method

1997-12-10

2000-04-04

Cuchlinski, Jr., William A.

Data processing: vehicles, navigation, and relative location

Navigation

With indicated course correction

701207, 701200, 702 85, 702 92, 702 93, 702150, 73 175, 73 176, 33300, 33324, 33355R, G05D 100, G01C 2500, G01C 1700

Patent

active

060472375

ABSTRACT:
A method of installing a compass system includes the steps of mounting the electronic compass in a vehicle, coupling the electronic compass to a power source of the vehicle, downloading precalibration data into the electronic compass after the electronic compass has been mounted in the vehicle, and initiating a precalibration routine in the vehicle that is headed in a predetermined direction. The method may further include the steps of identifying characteristics of the vehicle and selecting precalibration data corresponding to the identified vehicle characteristics. The precalibration data selected corresponds to a make and model of the vehicle in which the compass may be installed and further may correspond to sets of vehicle options that may affect vehicular magnetism. If the electronic compass is provided as part of a trip computer, the precalibration data is preferably downloaded at the same time that the fuel tank size is downloaded into the trip computer.

REFERENCES:
patent: 4622843 (1986-11-01), Hormel
patent: 4677754 (1987-07-01), Hormel
patent: 4807462 (1989-02-01), Al-Attar
patent: 4843865 (1989-07-01), Fowler
patent: 5390122 (1995-02-01), Michaels et al.
patent: 5737226 (1998-04-01), Olson et al.

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