High temperature-pressure FBG sensor applied to special environments

WANG Hong-liang; SONG Juan; FENG De-quan; WU Hua-chun

doi:10.3788/OPE.20111903.0545

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High temperature-pressure FBG sensor applied to special environments

Article | 更新时间：2020-08-12

- High temperature-pressure FBG sensor applied to special environments
- Optics and Precision Engineering Vol. 19, Issue 3, Pages: 545-551(2011)
- 作者机构：
  
  西安石油大学光电油气测井与检测教育部重点实验室,陕西西安 710065
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20111903.0545
  CLC： TN253
- Received：30 June 2010，
  
  Revised：21 August 2010，
  
  Published Online：22 March 2011，
  
  Published：22 March 2011
- 稿件说明：
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王宏亮, 宋娟, 冯德全, 邬华春. 应用于特殊环境的光纤光栅温度压力传感器[J]. 光学精密工程, 2011,19(3): 545-551

WANG Hong-liang, SONG Juan, FENG De-quan, WU Hua-chun. High temperature-pressure FBG sensor applied to special environments[J]. Editorial Office of Optics and Precision Engineering, 2011,19(3): 545-551
王宏亮, 宋娟, 冯德全, 邬华春. 应用于特殊环境的光纤光栅温度压力传感器[J]. 光学精密工程, 2011,19(3): 545-551 DOI： 10.3788/OPE.20111903.0545.

WANG Hong-liang, SONG Juan, FENG De-quan, WU Hua-chun. High temperature-pressure FBG sensor applied to special environments[J]. Editorial Office of Optics and Precision Engineering, 2011,19(3): 545-551 DOI： 10.3788/OPE.20111903.0545.

摘要

针对现有高温高压油井下对温度和压力的实时长期监测要求

设计了温度补偿式光纤光栅温度压力双参量传感系统。根据传感器的使用环境

优选了恒弹性合金。采用优选后的恒弹性合金作为基底材料设计了圆筒与圆形膜片组合式传感器结构

圆形膜片是整体加工成型的。最后

对传感器进行相关实验测试。实验测试与误差分析结果显示

传感器实现了温度和压力的大量程测量

传感特性呈单值线性

温度补偿可一体化封装;温度线性检测区为0~350 ℃

温度灵敏度为0.020 1 nm/℃

温度测量静态误差为0.029%;压力线性检测区为0~60 MPa

压力灵敏度为0.013 6 nm/MPa

压力测量静态误差为0.046%

这些指标能够满足实际工程的要求。

Abstract

With the aim to serve in bad environments and to meet the requirements of real-time and long-term service

a new kind of double parameters and high temperature-pressure fiber Bragg grating(FBG) sensor with a temperature-compensator was put forward. Firstly

the constant elasticity alloy was selected based on the special environments for the sensor. Then

a new kind of structure combined with a circular cylinder and a circular diaphragm was designed by taking the optimized constant elasticity alloy as the substrates. Finally

three experiments of temperature

pressure and temperature-pressure were performed. Experimental results indicate that the sensor not only has great temperature and pressure detection ranges

but also can realize the linear measurement within the ranges of 0~60 MPa and 0~350 ℃.The experiments offer the pressure sensitivities in 0.013 6 nm/MPa

temperature sensitivity in 0.020 1 nm/℃

and the static errors in 0.046% and 0.029%

respectively. These indicators can meet the requirements of practical engineering applications.

关键词

Keywords

references

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