发明名称 |
Displacement sensing system |
摘要 |
A displacement sensing system including an oscillator circuit having a characteristic frequency which varies as a function of a magnetic field in the vicinity thereof, an element whose position relative to the oscillator circuit is varied by a displacement, the element being operative to vary the magnetic field in the vicinity of the oscillator circuit as a function of the displacement and circuitry for sensing a change of frequency of the oscillator circuit over time (delta f/delta t) and for providing an output indication when the change in frequency of the oscillator circuit over time exceeds a threshold.
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申请公布号 |
US2004124981(A1) |
申请公布日期 |
2004.07.01 |
申请号 |
US20030257501 |
申请日期 |
2003.04.23 |
申请人 |
MOLDAVSKY MARK;ZHEVELEV BORIS |
发明人 |
MOLDAVSKY MARK;ZHEVELEV BORIS |
分类号 |
G01V3/08;G08C19/16;(IPC1-7):G08B13/14 |
主分类号 |
G01V3/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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