发明名称 |
Analyzer circuit an inductive position sensor |
摘要 |
The analyzer circuit includes a first oscillator producing an output signal having a first frequency depending on an inductance of an inductive position sensor having two oscillator coils positioned near a movable part; a switching device in the first oscillator for alternatingly connecting one of the two coils and simultaneously disconnecting the other according to a state of the switching device; a frequency divider for converting the output signal at the first frequency to another output signal at another frequency; a counter for counting a pulse signal under control of the other output signal of the frequency divider; a second oscillator connected to the counter and providing input pulses at a fixed frequency to the counter, which counts the input pulses under control of the other output signal of the frequency divider; a start synchronizing circuit for starting and synchronizing the divider and the counter; a flip-flop connected to the frequency divider and to the switching device to switch the state of the switching device; and an arithmetic-logic unit connected to the counter to receive a count from it and having a device for generating a digital output signal characteristic of a position of the movable part relative to the oscillator coils according to the count.
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申请公布号 |
US5425073(A) |
申请公布日期 |
1995.06.13 |
申请号 |
US19930120577 |
申请日期 |
1993.09.10 |
申请人 |
ROBERT BOSCH G.M.B.H. |
发明人 |
BITZER, RAINER;DITTMER, BERND;SCHWARZ, FRANZ;HAEGELE, KARL-HEINZ;WIEJA, THOMAS;SCHNEIDER, HELMUT |
分类号 |
G01D5/22;G01D5/248;G01V3/10;H03M1/60;(IPC1-7):G01B7/00 |
主分类号 |
G01D5/22 |
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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