Magnetic field sensing device

G - Physics – 01 – V

Patent

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Details

G01V 3/08 (2006.01) G01R 33/09 (2006.01)

Patent

CA 2329209

Two sensor units are formed from magnetoresistive material. Elements of the first sensor unit have a total anisotropy field in a first direction. Elements of the second sensor unit have a total anisotropy field in a second direction. An integral coil sets a direction of magnetization in the elements of the first and second sensor units. An output of the first sensor unit is representative of magnetic field components perpendicular to the first direction and an output of the second sensor is representative of magnetic field components perpendicular to the second direction.

Deux blocs capteurs sont formés à partir du matériel magnétorésistant. Les éléments du premier bloc capteur ont un champ anisotropique total dans une première direction. Les éléments du deuxième bloc capteur ont un champ anisotropique total dans une seconde direction. Une bobine intégrée établit une direction de magnétisation dans les éléments du premier et du deuxième blocs capteurs. Une sortie du premier bloc capteur est représentative des composants du champ magnétique perpendiculaires à la première direction, alors qu'une sortie du deuxième bloc capteur est représentative des composants du champ magnétique perpendiculaires à la seconde direction.

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