Geomagnetic direction sensor

Details Geomagnetic direction sensor Geomagnetic direction sensor

1995-05-24

1996-10-15

Fulton, Christopher W.

Geometrical instruments

Indicator of direction of force traversing natural media

Magnetic field responsive

33361, G01C 1728

Patent

active

055641946

ABSTRACT:
A geomagnetic direction sensor has a substrate, at least two magneto-resistive effect devices and a coil for generating the bias magnetic field. The substrate retains shape symmetry when rotated through 90.degree. and includes plural magnetic cores for converging the geomagnetism. The magnetic cores are arrayed circumferentially of the substrate and interconnected with one another by a non-magnetic material. At least two magneto-resistive effect devices are provided in register with the magnetic gaps so as to be substantially at right angles to one another and to the direction of the magnetic field of the geomagnetism in the magnetic gap region. The substrate also includes a coil for generating a bias magnetic field for impressing a bias magnetic field to each of the magneto-resistive effect devices.

REFERENCES:
patent: 2585956 (1952-02-01), McCarthy
patent: 2815499 (1957-12-01), Brynes
patent: 2823545 (1958-02-01), Bodge
patent: 4763072 (1988-08-01), Katoh et al.
patent: 5091697 (1992-02-01), Roth et al.

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