Magnetic field sensor element capable of measuring magnetic field components in two directions
First Claim
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1. A sensor useful in determining orientation with respect to an external magnetic field comprising:
- magnetic field sensing means having an output terminating region, said magnetic field sensing means being arranged to provide an output signal at said magnetic field sensing means output terminating region, said output signal being representative of external magnetic field components in a first direction when a first bias magnetic field is applied to said magnetic field sensing means in a second direction, and said output signal being representative of external magnetic field components in a third direction when a second magnetic bias field is applied to said magnetic field sensing means in a fourth direction;
magnetic field biasing means adapted to provide said first and second magnetic bias fields to said magnetic field sensing means.
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Abstract
A magnetic field sensor which may be rendered preferentially sensitive to magnetic field components in each of two, preferably orthogonal, directions by application of appropriate magnetic bias fields is disclosed.
49 Citations
25 Claims
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1. A sensor useful in determining orientation with respect to an external magnetic field comprising:
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magnetic field sensing means having an output terminating region, said magnetic field sensing means being arranged to provide an output signal at said magnetic field sensing means output terminating region, said output signal being representative of external magnetic field components in a first direction when a first bias magnetic field is applied to said magnetic field sensing means in a second direction, and said output signal being representative of external magnetic field components in a third direction when a second magnetic bias field is applied to said magnetic field sensing means in a fourth direction; magnetic field biasing means adapted to provide said first and second magnetic bias fields to said magnetic field sensing means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification