Design and Investigation of a High-Sensitivity Tilt Sensor Based on FBG

被引：12
作者：
Pan, Jianjun [1 ]
Wang, Liangying [2 ]
Hou, Wei [2 ]
Lv, Hanyang [3 ]
机构：
[1] Wuhan Univ Technol, Natl Engn Res Ctr Fiber Opt Sensing Technol & Net, Wuhan 430070, Peoples R China
[2] Wuhan Univ Technol, Sch Mech & Elect Engn, Wuhan 430070, Peoples R China
[3] Wuhan Univ Technol, Sch Informat Engn, Wuhan 430070, Peoples R China
来源：
PHOTONIC SENSORS | 2023年 / 13卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Tilt sensor; FBG; temperature self-compensation; silicon oil; vibration damping;
D O I：
10.1007/s13320-022-0671-8
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
In this paper, a high-sensitivity fiber Bragg grating (FBG) tilt sensor using a cantilever-based structure is introduced. Two FBGs are fixed on a specially designed elastomer. One end of the elastomer is connected to the mass block, and the other end is connected to the shell. The principle of the tilt sensor is introduced in detail, and the mathematical model is established. The performance of the sensor is studied. The results show that there is a good linear relationship between the central wavelength difference of the two FBGs and the tilt angle in the range of -5 degrees to 5 degrees. The repeatability of the sensor is good, and the tilt sensitivity can reach 231.7pm/degrees. The influence of the silicone oil on the damping capacity of the sensor is studied. The results show that the damping capacity of the sensor has been improved by sealing the silicone oil inside the shell of the sensor. The field test is carried out on a pier of an elevated bridge, and the result is good, which verifies the practicability of the sensor.
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页数：11
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