| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic sensor apparatus capable of detecting both the strength and direction of a magnetic field and having high sensitivity to changes in field strength. SOLUTION: A first magnet 31 for generating a magnetic force between the first magnet 31 and magnetism in a magnetic field to be detected is adhered to the upper surface of a beam part 21, and a second magnet 32 is adhered to the lower surface of the beam part 21. A recession part 11 is provided with both a GMR element 33 for detecting field strength to be provided from the second magnet 32 and a processing circuit 34 for outputting a voltage according to an electric resistance value of the GMR element 33. The beam part 21 is distorted due to a magnetic force generated between the first magnet 31 and magnetism in the magnetic force in the magnetic force to be detected. Since the distance between the second magnet 32 and the GMR element 33 changes at this time, a magnetic field having different strength according to the direction in which the beam part 21 is distorted is provided for the GMR element 33. COPYRIGHT: (C)2007,JPO&INPIT
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