Detector for sensing the angular position of a rotatable magnet
OwnerIb Thomseninventor
Life of this patent
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Abstract
A detector to detect angular positions of a rotatable magnet, i.e., a magnetic compass, having one or more flux-sensitive components, namely Hall-elements. The detector includes a substantially flat and circular carrying body to be mounted on the top or bottom of a compass. On the carrying body the Hall-elements are mounted parallel to and close to the flat surface and positioned on diameters perpendicular to axes of symmetry of the flat surface. The carrying body can be rotatably fastened on the compass case and locked in desired predetermined positions.
Claims5
Detector means for the detection and electronic reading of the angular position of a magnetic compass, using flux-sensitive means, comprising:
- a carrying body having a substantially flat and circular surface, said body adapted to be mounted on the exterior top or bottom of a compass, perpendicular to the axis of the compass magnet, the flux sensitive means comprising at least one pair of Hall-elements mounted on said body parallel to said flat surface and symmetrically positioned on a diameter perpendicular to an axis of symmetry of the flat surface, and at least a second pair of Hall-elements substantially are mounted in the same manner as said one pair on the flat surface but at 90 degrees to the line connecting the Hall-elements in the first pair.
Detector means for the detection and electronic reading of the angular position of a magnetic compass, using flux-sensitive means, comprising:
- a carrying body having a substantially flat and circular disc with a flat surface, said body adapted to be fastened on the exterior of the glass cover of a compass, the flux sensitive means comprising at least one pair of Hall-elements mounted on said body parallel to said flat surface, symmetrically and diametrically positioned on the same diameter perpendicular to an axis of symmetry of the flat surface, said carrying body to be fastened upon the glass of the compass coaxial to the compass card in a manner enabling rotation and subsequent locking of said disc in a predetermined position relative to the compass card and adapted to be fastened to means for the reading of the adjustable angle between the axis of symmetry of the disc and the North-South direction indicated on the compass card.
Dependencies are inferred from the claim text.