发明名称 |
PRESSURE MEASURING DEVICE AND METHOD |
摘要 |
A device to measure a fluid pressure comprises a pressure sensing element 10 and a pressure readout element 20. The pressure sensing element 10 comprises a cavity 11 capped by a flexible membrane 13, the cavity having a length d that varies with the fluid pressure P1 applied on the flexible membrane 13. The pressure readout element 20 comprises a light source 24 for providing an incident beam of a determined wavelength range directed towards the cavity and an optical spectral analyzer 25 for measuring a power spectrum of a return beam reflected by the cavity, and processing means 27 for determining the cavity length d and the fluid pressure P1 based on the power spectrum.
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申请公布号 |
US2009151423(A1) |
申请公布日期 |
2009.06.18 |
申请号 |
US20080334584 |
申请日期 |
2008.12.15 |
申请人 |
WU XU;HARTOG ARTHUR;CADERE DIMITRI;YAMATE TSUTOMU |
发明人 |
WU XU;HARTOG ARTHUR;CADERE DIMITRI;YAMATE TSUTOMU |
分类号 |
G01L27/00;E21B47/06;G01B9/02;G01K13/00;G01L7/06;G02B6/00 |
主分类号 |
G01L27/00 |
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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