发明名称 |
Differential variable reluctance transducer |
摘要 |
The novel differential variable reluctance transducer and telemetry system is comprised of a ultra miniaturized device encased in stainless steel. The system contains a free sliding, magnetically permeable, stainless core and two coils surrounding the core. The position of the core is detected by measuring the coils' differential reluctance. The coils resonate at a frequency which depends on the position of the core and the difference in resonant frequency is used to modulate a high frequency carrier. This radio frequency signal is transmitted for remote reception by an FM receiver, amplified and put through a phase-locked-loop circuit into a microprocessor for counting and displaying.
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申请公布号 |
US5497147(A) |
申请公布日期 |
1996.03.05 |
申请号 |
US19930078467 |
申请日期 |
1993.06.21 |
申请人 |
MICROSTRAIN, COMPANY |
发明人 |
ARMS, STEVEN W.;TOWNSEND, CHRISTOPHER P. |
分类号 |
G01B7/24;G01D5/22;(IPC1-7):G08C19/06 |
主分类号 |
G01B7/24 |
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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