Magnetic direction sensor

Details Magnetic direction sensor Magnetic direction sensor

1985-09-12

1986-10-14

Little, Willis

Geometrical instruments

Indicator of direction of force traversing natural media

Magnetic field responsive

33363Q, G01C 1730

Patent

active

046164243

ABSTRACT:
A magnetic direction sensor having a head constituted by a magnetic wound core composed of a ferromagnetic metal ribbon; a winding for exciting the magnetic wound core; a first output winding wound around the core such that it encircles two opposite portions of the core and a second output winding wound around the core at a certain angle with the first output winding such that it encircles two other opposite portions of the core; the first and second output windings providing output signals for determining the direction of the external magnetic field with respect to the head, and the inner and outer ends of the ribbon overlapping each other circumferentially by a certain angle .theta. may be between 0.5 and .theta..sub.max satisfying the equation: .theta..sub.max =1/4D+1.5.alpha.+1 wherein D represents the outer diameter of the core and .theta. represents a desired direction accuracy. This structure of the sensor head enables it to obtain a high direction accuracy.

REFERENCES:
patent: 2519058 (1950-08-01), Lundberg et al.
patent: 3959889 (1976-06-01), Thomas
patent: 4262427 (1981-04-01), Lynch et al.
patent: 4413424 (1983-11-01), Sasaki et al.
patent: 4445279 (1984-05-01), Tsushima et al.
IEEE Trans on Geoscience Electronics, vol. GE-7, No. 4, Oct. 1969.

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