发明授权
- 专利标题: Proximity detector
- 专利标题(中): 接近检测器
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申请号: US10156684申请日: 2002-05-28
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公开(公告)号: US06693419B2公开(公告)日: 2004-02-17
- 发明人: Jason T. Stauth , P. Karl Scheller , Glenn A. Forrest , Ravi Vig , Jay M. Towne
- 申请人: Jason T. Stauth , P. Karl Scheller , Glenn A. Forrest , Ravi Vig , Jay M. Towne
- 主分类号: G01B714
- IPC分类号: G01B714
摘要:
A proximity detector includes an offset circuit for bringing at least one of a magnetic field signal and a tracking signal towards the other one of the magnetic field signal and the tracking signal when the detector output signal changes state. A magnetic field-to-voltage transducer provides the magnetic field signal indicative of an ambient magnetic field and a peak detector responsive to the magnetic field signal provides the tracking signal which substantially follows the magnetic field signal. A comparator generates the detector output signal which changes state when the magnetic field signal varies from the tracking signal by a predetermined amount.
公开/授权文献
- US20030222637A1 Proximity detector 公开/授权日:2003-12-04