发明名称 |
Self-excited microelectromechanical device |
摘要 |
A self-excited microelectromechanical device is described. The device includes a resonating structure, such as a cantilever, which responds to a physical phenomenon by generating an induced variable frequency voltage signal corresponding to the physical phenomenon. Self-excitation circuitry connected to the cantilever processes the induced variable frequency voltage signal and produces a variable frequency voltage signal in a resonant pass band of interest that is applied to the cantilever to augment the effect of the physical phenomenon on the cantilever. An exemplary use of the device is as a power line sensor. In this context, the cantilever responds to the electric field associated with a power signal on a power line. The cantilever transforms the voltage signal of the electric field into a corresponding frequency signal. The noise-immune frequency signal can be readily processed to reconstruct the power signals carried by the power line.
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申请公布号 |
US5696491(A) |
申请公布日期 |
1997.12.09 |
申请号 |
US19950476622 |
申请日期 |
1995.06.07 |
申请人 |
REGENTS OF THE UNIVERSITY OF CALIFORNIA |
发明人 |
WHITE, RICHARD M.;LEE, SEUNG;BUSTILLO, JAMES M.;CAMPBELL, GREGORY A. |
分类号 |
G01D18/00;G01R15/14;G01R29/08;G08B21/00;H02N1/00;(IPC1-7):G08B21/00 |
主分类号 |
G01D18/00 |
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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