Fiber optic sensor for hydrostatic pressure and temperature measurement in riverbanks monitoring

被引：40

作者：

Schenato, Luca ^{[1
]}

Aneesh, Rajendran ^{[2
]}

Palmieri, Luca ^{[2
]}

Galtarossa, Andrea ^{[2
,3
]}

Pasuto, Alessandro ^{[1
]}

机构：

[1] CNR, Res Inst Geohydrol Protect, I-35127 Padua, Italy

[2] Univ Padua, Dept Informat Engn, I-35131 Padua, Italy

[3] Southeast Univ, IIUSE, Nanjing, Peoples R China

来源：

OPTICS AND LASER TECHNOLOGY | 2016年 / 82卷

关键词：

Soil; Riverbank; Hydrostatic pressure; Temperature; Optical frequency domain reflectometry; SENSITIVITY;

D O I：

10.1016/j.optlastec.2016.02.015

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An optical fiber sensor for the simultaneous measurement of hydrostatic pressure and temperature in soil embankments is presented. It exploits the differential strain induced on a fiber in a dual-chamber case, constituting the sensor body. The strain, either induced by the pressure or by the temperature, is optically measured by means of coherent frequency domain reflectometry and variations induced by the two physical phenomena are discriminated because of the different behavior of the two chambers. Characterization of the sensor is presented and discussed. The prototype shows promising performance: temperature and pressure sensitivities are approximately -7 GHz/degrees C and -3.2 GHz/kPa, respectively, with accuracies of 0.5 degrees C and 0.3 kPa. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：57 / 62

页数：6

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