发明名称 |
Signal processing device for piezoelectric sensor with differentiating and integrating circuits |
摘要 |
<p>A signal processing device is provided which is designed to process an output of a piezoelectric sensor to produce a signal which indicates a load applied to the piezoelectric sensor accurately without being affected adversely by leakage current occurring in the piezoelectric sensor and electrical disturbances. The signal processing device includes a differentiating circuit which differentiates the output of the piezoelectric sensor and an integrating circuit which integrates an output of the differentiating circuit to produce an output signal as a function of the output of the piezoelectric sensor. The frequency range of the output signal is selected based on a frequency range of the load applied to the piezoelectric sensor. <IMAGE></p> |
申请公布号 |
EP1162442(A1) |
申请公布日期 |
2001.12.12 |
申请号 |
EP20010113945 |
申请日期 |
2001.06.07 |
申请人 |
DENSO CORPORATION |
发明人 |
SUZUKI, TOSHIYUKI;KUROKAWA, EIICHI;MURAI, HIROYUKI |
分类号 |
F02D45/00;G01L23/10;G01M15/04;(IPC1-7):G01L23/10 |
主分类号 |
F02D45/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|