|本期目录/Table of Contents|

 基于光纤布拉格光栅的温度应变复合测量系统
(PDF)

《纳米技术与精密工程》[ISSN:1672-6030/CN:12-1351/O3]

期数:
2017年5期
页码:
412-418
栏目:
精密测量
出版日期:
2017-09-15

文章信息/Info

Title:
 Temperature and Strain Measurement System Based on Fiber
Bragg Grating
文章编号:
1672-6030(2017)05-0412-07
作者:
 王立恒 林旭君 俞琳 汪冉冉
 (天津大学精密仪器与光电子工程学院,天津300072)
Author(s):
 Wang Liheng Lin Xujun Yu Lin Wang Ranran
 (School of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China)
关键词:
 光纤布拉格光栅 可调谐法布里-珀罗滤波器 温度 应变
Keywords:
 fiber Bragg grating tunable Fabry-Perot filter temperature strain
分类号:
TN29
DOI:
10.13494/j.npe.20140126
文献标识码:
A
摘要:
 本文基于光纤布拉格光栅(fiber Bragg grating,FBG)传感原理和可调谐滤波器解调技术设计了一套可用于工程中温度和应变监测的复合测量系统.对系统进行模块化设计,可根据应用实际情况配置各个模块,能够实现14通道同步并行测量,每通道最多可负载16支FBG传感器,即最多能实现224个待测点的实时同步测量.针对可调谐滤波器输出波长的非线性漂移问题,提出了可调谐滤波器的自适应驱动算法,波长拟合残差小于1 pm,确保系统的测量精度.系统的温度测量精度小于±0.5 ℃,稳定性良好.将本文系统应用于混凝土监测领域,测量结果验证了其可行性,可以满足实际工程应用的需要.
Abstract:
 Based on fiber Bragg grating (FBG) sensing principle and tunable filter demodulation technology, a compound measurement system of temperature and strain for engineering application was designed in this paper. The system was constructed by using modularized structure to realize different modules configuration depending on the application. 14channel synchronous parallel measurement could be realized, and each channel could connect up to 16 FBG sensors. In other words, there could be 244 FBG sensors working at the same time. Driven adaptive algorithm was proposed to solve the problem of tunable filter wavelength shift, ensuring that the fitting error of wavelength demodulation was less than 1 pm. The system enjoyed good stability, and its temperature measurement accuracy was less than ±0.5 ℃. The system proposed in this paper was applied to concrete monitoring and the measurement results verified the feasibility of the system, showing that the system could meet the needs of practical application.

参考文献/References

备注/Memo

备注/Memo:
收稿日期: 2017-08-08.
作者简介: 王立恒(1991—),女,硕士研究生.
通讯作者: 王立恒,wlhdoexofuji@163.com.
更新日期/Last Update: 2017-09-28