发明名称 |
SENSOR AND EXTERNAL TURBULENCE MEASURING METHOD USING THE SAME |
摘要 |
<p>The present invention relates to a sensor or the like having a structure that enables accurate temperature measurement in a wide temperature range including a low-temperature region and is suitable for independently and accurately determining temperature variations and strains appearing in an object to be measured. The sensor comprises a laser light source, a sensor section that has a plurality of waveguides transmitting a laser light from the laser light source therethrough, a detecting section, and an analyzing section. The detecting section detects a plurality of Brillouin spectra obtained from the sensor section. The analyzing section determines at least one measurement value of a temperature in the sensor section and a strain generated in the sensor section, based on fluctuations of parameters defining the respective detected Brillouin spectra. In particular, the sensor section has a structure such that the variation of the Brillouin spectrum in response to a disturbance differs between the waveguides. Thus, by simultaneously monitoring the Brillouin spectra that varying a different manner in a plurality of waveguides, it is possible not only to measure accurately the temperature in a wide temperature range including a low-temperature region, but also to make distinction between the strain and temperature.</p> |
申请公布号 |
EP1939596(A1) |
申请公布日期 |
2008.07.02 |
申请号 |
EP20060798443 |
申请日期 |
2006.09.29 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
YAMAMOTO, YOSHINORI;SAKABE, ITARU;SASAOKA, EISUKE;TANJI, HISASHI |
分类号 |
G01D5/353;G01B11/16;G01K11/32;G01L1/24;G01M11/08 |
主分类号 |
G01D5/353 |
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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