Design and experiment of inclinometer based on FBG

LI Junxin; LANG Xiangwei

doi:10.13873/J.1000-9787(2020)04-0086-03

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Design and experiment of inclinometer based on FBG

更新时间：2025-09-11

- Design and experiment of inclinometer based on FBG
- Issue 4, Pages: 86-88+91(2020)
- 作者机构：
  
  1. 中国铁道科学研究院深圳研究设计院
  2. 深圳地质灾害监控工程实验室
- 作者简介：
- 基金信息：
- DOI：10.13873/J.1000-9787(2020)04-0086-03
  CLC： TU433
- Published：2020
- 稿件说明：
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LI Junxin, LANG Xiangwei. Design and experiment of inclinometer based on FBG[J]. 2020, (4): 86-88+91.
DOI：

LI Junxin, LANG Xiangwei. Design and experiment of inclinometer based on FBG[J]. 2020, (4): 86-88+91. DOI： 10.13873/J.1000-9787(2020)04-0086-03.

摘要

为解决当前边坡深部水平位移监测中存在的监测效率低、测点数量受限等问题

提出将传感器串接在一条传输光纤上形成变形感知阵列的深部位移监测方法

研发了一种基于光纤Bragg光栅(FBG)传感技术的新型固定式测斜仪器。对光纤测斜仪进行实验测试分析其性能表现。标定实验表明:光纤测斜仪具有较好的线性度

角度分辨率可达到0. 015°

并通过室内模拟试验测试分析在不同的变形状况下光纤测斜仪的精确性

测试结果表明与实际变形较为吻合。

Abstract

To solve the problems such as low monitoring efficiency and limited number of measuring points in the current internal displacement monitoring

a monitoring method by connecting in series on a transmission fiber to form deformation sensing array is proposed and a novel inclination measuring instrument based on fiber Bragg grating（ FBG） is researched. Laboratory tests are carried out to analyze on performance and the accuracy of the inclinometer under different deformation conditions. The calibration experiment shows that the inclinometer has good linearity

its angular resolution is 0. 015°. The simulation test result indicates that the measurement of inclinometer is in good agreement with the actual deformation.

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