An FBG Temperature-Pressure Sensor Based on Diaphragm and Special-Shaped Bracket Structure

被引：15

作者：

Feng, Dequan ^{[1
,2
]}

Xu, Dongpo ^{[3
]}

Chen, Fengyi ^{[4
]}

Chen, Qiang ^{[5
]}

Qiao, Xueguang ^{[4
]}

机构：

[1] Northwest Univ, Sch Phys, Xian 710127, Peoples R China

[2] Xian Shiyou Univ, Sch Sci, Xian 710065, Peoples R China

[3] Xian Shiyou Univ, Sch Sci, Key Lab Photoelect Oil Gas Logging & Detecting, Minist Educ, Xian 710065, Peoples R China

[4] Northwest Univ, Sch Phys, Xian 710127, Peoples R China

[5] China Petr Logging Co Ltd, Logging Technol Res Inst, Xian 710005, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2023年 / 23卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Temperature sensors; Sensors; Temperature measurement; Fiber gratings; Sensitivity; Pressure measurement; Temperature distribution; Diaphragm; fiber Bragg grating (FBG); pressure; sensitivity; temperature; OIL;

D O I：

10.1109/JSEN.2022.3232142

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A fiber Bragg grating (FBG) sensor capable of simultaneous temperature-pressure measurement is presented and experimentally verified, which consists of a diaphragm, a special-shaped bracket, dual FBGs, and protective housing. The principle of simultaneous temperature and pressure measurement with dual FBGs is theoretically illustrated and simulated by a finite-element analysis. The experimentally investigated results demonstrate that the sensor can be employed to measure temperature and pressure in environmentswhere the temperature ranges from 50 degrees C to 200 degrees C and the pressure ranges from 0 to 40 MPa. The temperature sensitivity of the sensor is 31.8 pm/ degrees Cwith a linear correlation coefficient of 0.9997; the pressure sensitivity is 50.6 pm/MPa, the linearity is 0.21%, and the repeatability and hysteresis error are 0.024% and 0.16%, respectively. The sensor exhibits a large measuring range, high-temperature resistance, miniaturized structure, and easily multiplexed, which allows it for temperature and pressure dual parametric measurements in high-temperature and high-pressure environments such as oil and gas wells.

引用

页码：3589 / 3596

页数：8

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