滑动式光纤布拉格光栅位移传感器

郭永兴; 熊丽; 孔建益; 张赞允; 秦丽

doi:10.3788/OPE.20172501.0050

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滑动式光纤布拉格光栅位移传感器

现代应用光学 | 更新时间：2020-07-07

- 滑动式光纤布拉格光栅位移传感器
- Sliding type fiber Bragg grating displacement sensor
- 光学精密工程 2017年25卷第1期页码：50-58
- 作者机构：
  
  1.武汉科技大学机械自动化学院, 湖北武汉 430081
  2.武汉理工光科股份有限公司, 湖北武汉 430223
  3.天津工业大学电子与信息工程学院天津市光电检测技术与系统重点实验室, 天津 300387
- 作者简介：
  
  郭永兴(1986-),男,河南汝南人,博士,讲师,硕士生导师,2009年于华北水利水电大学获得学士学位,2014年于武汉理工大学光纤传感技术国家工程实验室获得博士学位,主要从事光纤传感基础理论与检测技术、传感器设计理论与关键技术方面的研究。E-mail:yongxing_guo@wust.edu.cn E-mail:yongxing_guo@wust.edu.cn
  [ "熊丽(1989-),女,湖南娄底人,工程师,2012年于中南林业科技大学获得学士学位,2015年于武汉理工大学获得硕士学位,主要从事光纤光栅传感技术方面的研究。E-mail:xiongli@wutos.com" ]
- 基金信息：
  
  国家自然科学基金资助项目(No.51605348，No.51578430，No.51509194);中国博士后科学基金资助项目(No.2015M572208)
- DOI：10.3788/OPE.20172501.0050
  中图分类号： TN253;TP212
- 收稿日期：2016-06-12，
  
  录用日期：2016-9-2，
  
  纸质出版日期：2017-01-25
- 稿件说明：
移动端阅览
郭永兴, 熊丽, 孔建益, 等. 滑动式光纤布拉格光栅位移传感器[J]. 光学精密工程, 2017,25(1):50-58.

Yong-xing GUO, Li XIONG, Jian-yi KONG, et al. Sliding type fiber Bragg grating displacement sensor[J]. Editorial office of optics and precision engineeri, 2017, 25(1): 50-58.
郭永兴, 熊丽, 孔建益, 等. 滑动式光纤布拉格光栅位移传感器[J]. 光学精密工程, 2017,25(1):50-58. DOI： 10.3788/OPE.20172501.0050.

Yong-xing GUO, Li XIONG, Jian-yi KONG, et al. Sliding type fiber Bragg grating displacement sensor[J]. Editorial office of optics and precision engineeri, 2017, 25(1): 50-58. DOI： 10.3788/OPE.20172501.0050.

摘要

为克服现有光纤光栅位移传感器设计中存在的传力介质弹性系数易改变、滑块易产生偏移等对测量精度的不利影响，提出了一种滑动式位移传感器。楔形滑块的滑动面和限制面的采样互相垂直、等强度梁的变截面和一体化、滑动面圆弧化等特殊设计，使传感器具有抗滑动干扰性、梁挠位移测量的高灵敏性、长期往复测量的耐磨性等优点。阐述了传感器测量原理，加工制造了传感器原型，并开展了全面的性能测试。测试结果和误差分析表明：传感器在0~100 mm 的量程中，灵敏度为20.11 pm/mm，精度达到0.099 5% F.S，具备良好的微位移测量能力；重复性误差和迟滞误差分别仅为0.705%和0.403%，且抗蠕变性能良好，可满足机械装备、土木工程等重大设施的结构健康监测对位移、变形测量的精度和长期稳定性要求。

Abstract

In order to overcome the negative influence of elasticity coefficient changeability of force-transmitting medium and directional movement of sliding block on the measurement accuracy of existing fiber Bragg grating (FBG) displacement sensors

a novel sliding type FBG displacement sensor was investigated. Special design and measures were adopted

including perpendicular sliding surface to the constrain face of sliding block

constant-strength beam with altered cross-section

and circular sliding surface of the beam

which enable the sensor to possess anti-interference of directional sliding

high sensitive measurement to beam deflection

and abrasion performance in reciprocating displacement measurement in long-term. The measuring principle of the sensor was deduced and a sensor prototype was manufactured for performance testing. Experimental results demonstrate that displacement sensitivity of the sensor is 20.11 pm/mm in the range of 0—100 mm

and the measuring accuracy is 0.999 5%F.S

which indicate that the sensor is a promising candidate for micro displacement measurement. Moreover the repeatability error and hysteresis error are only 0.705% and 0.403% respectively

which demonstrates good creep resistance of the sensor. These excellent performances can satisfy the requirements of high precision and long term stability in structural health monitoring of machinery equipment and civil engineering.

关键词

Keywords

references

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