发明授权
- 专利标题: Magnetoresistance effect element sensor and an electronic circuit therefor
- 专利标题(中): 磁阻效应元件传感器及其电子电路
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申请号: US205378申请日: 1994-03-04
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公开(公告)号: US5585719A公开(公告)日: 1996-12-17
- 发明人: Michiko Endo , Nobuyoshi Shimizu , Shigemi Kurashima , Hiroshi Kajitani , Shigeo Tanji , Mieko Kawamoto
- 申请人: Michiko Endo , Nobuyoshi Shimizu , Shigemi Kurashima , Hiroshi Kajitani , Shigeo Tanji , Mieko Kawamoto
- 申请人地址: JPX Kawasaki
- 专利权人: Fujitsu Limited
- 当前专利权人: Fujitsu Limited
- 当前专利权人地址: JPX Kawasaki
- 优先权: JPX5-049747 19930311; JPX5-091712 19930420; JPX6-024579 19940223
- 主分类号: G01D5/245
- IPC分类号: G01D5/245 ; G01D5/14 ; G01D5/16 ; G01P3/486 ; G01P3/488 ; G01D5/244 ; G01N27/72
摘要:
A magnetic sensor including a magnetoresistance effect element directed to prevent deterioration in the detection sensitivity occurring due to inversion of the magnetization of a plurality of ferromagnetic thin film stripes forming the magnetoresistance effect element with respect to the initial direction during the repeated operations, the magnetic sensor being arranged in such a manner that the magnetoresistance effect element is disposed at a position deviating from the center of the magnetic pole surface of a cylindrical magnet, preferably at a position deviating in a direction perpendicular to a direction in which the magnetic object to be detected is moved. The thus-employed arrangement enables a bias magnetic field to be applied to the magnetoresistance effect element in parallel to the deviation direction. Therefore, the magnetization of all of the plurality of the ferromagnetic thin film stripes forming the magnetoresistance effect element can be caused to face the same direction. As a result, the detection sensitivity can be stabilized because inversion of the magnetization can be prevented even if external magnetic fields are repeatedly applied.
公开/授权文献
- US5973239A Inbred corn line LH265 公开/授权日:1999-10-26