Vehicle compass correction circuit

Details Vehicle compass correction circuit Vehicle compass correction circuit

1994-08-29

1996-04-30

Cuchlinski, Jr., William A.

Geometrical instruments

Indicator of direction of force traversing natural media

Magnetic field responsive

33355R, G01C 1738

Patent

active

055113192

ABSTRACT:
A compass circuit has a magnetic field sensor adapted to be positioned in a vehicle near a source of varying magnetic fields. A source of correction signals is coupled to the compass circuit for providing correction signals applied to the compass circuit for correcting the heading display of the compass circuit when differing levels of magnetic field disturbance occurs to provide accurate heading information. In a preferred embodiment the source of correction signals includes a detector circuit coupled to the vehicle accessory for providing signals directly corresponding to the source of magnetic field interference.

REFERENCES:
patent: 4091543 (1978-05-01), Lapeyre
patent: 4341023 (1982-07-01), Marcus et al.
patent: 4414753 (1983-11-01), Moulin et al.
patent: 4424631 (1984-01-01), Franks
patent: 4425717 (1984-01-01), Marcus
patent: 4505054 (1985-03-01), Clark et al.
patent: 4546551 (1985-10-01), Franks
patent: 4622754 (1986-11-01), Chujo et al.
patent: 4672565 (1987-06-01), Kuno et al.
patent: 4677381 (1987-06-01), Geerlings
patent: 4953305 (1990-09-01), Van Lente et al.
patent: 5287297 (1994-02-01), Ihara et al.

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