[1]邱忠超,王业伟,滕云田,等.基于柔性铰链的低频FBG加速度传感器[J].自然灾害学报,2021,30(03):035-42.[doi:10.13577/j.jnd.2021.0304]
 QIU Zhongchao,WANG Yewei,TENG Yuntian,et al.Low-frequency FBG acceleration sensor based on flexible hinge[J].,2021,30(03):035-42.[doi:10.13577/j.jnd.2021.0304]
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基于柔性铰链的低频FBG加速度传感器
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
30
期数:
2021年03期
页码:
035-42
栏目:
出版日期:
2021-06-28

文章信息/Info

Title:
Low-frequency FBG acceleration sensor based on flexible hinge
作者:
邱忠超12 王业伟1 滕云田12 张晋铨1 洪利1
1. 防灾科技学院 电子科学与控制工程学院, 河北 廊坊 101601;
2. 中国地震局地球物理研究所, 北京 100081
Author(s):
QIU Zhongchao12 WANG Yewei1 TENG Yuntian12 ZHANG Jinquan1 HONG Li1
1. School of Electronic Science and Control Engineering, Institute of Disaster Prevention, Langfang 101601, China;
2. Institute of Geophysics, China Earthquake Administration, Beijing 100081, China
关键词:
光纤光栅柔性铰链加速度传感器低频
Keywords:
fiber gratingflexible hingeacceleration sensorlow-frequency
分类号:
TP212.2;X4;X9
DOI:
10.13577/j.jnd.2021.0304
摘要:
加速度检测是地震监测、结构健康监测以及资源勘探等领域的重要技术手段。针对光纤加速度传感器灵敏度低的问题,提出一种基于柔性铰链结构的低频双光纤光栅加速度传感器。对其灵敏度和谐振频率进行理论分析,采用MATLAB软件对铰链厚度、铰链半径、质量块尺寸等结构参数进行分析和优化,利用ANSYS软件进行结构静应力和模态仿真,构建测试系统对传感器实物进行性能测试实验。结果表明,该传感器的谐振频率为117 Hz,在5~90 Hz的低频段具有平坦的灵敏度响应,灵敏度约为278 pm/g,光纤中心波长漂移量与加速度有较好的线性相关性,横向干扰程度小于5%。为光纤光栅加速度传感器的工程应用提供借鉴。
Abstract:
Acceleration detection is an important technical means in seismic monitoring, structural health monitoring and resource exploration. Aiming at the problem of low sensitivity of fiber optic acceleration sensor, a low-frequency dual fiber grating acceleration sensor based on flexible hinge structure is proposed. The sensitivity and resonant frequency of the sensor were analyzed theoretically, and the structural parameters such as hinge thickness,hinge radius and mass block size were analyzed and optimized by using Matlab software. The static stress and modal simulation of the sensor were carried out by using ANSYS software, and a test system was built to test the performance of the sensor. The results show that the resonant frequency of the sensor is 117 Hz, flat sensitivity response in the low frequency range of 5~90 Hz, the sensitivity is about 278 pm/g, the center wavelength drift of the fiber has a good linear correlation with the acceleration, and the degree of lateral interference is less than 5%. Provide reference for the engineering application of fiber grating acceleration sensor.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2020-10-28;改回日期:2021-01-04。
基金项目:河北省高等教育教学改革研究与实践项目(2019GJJG473);"中央高校基本科研业务费"研究生科技创新基金项目(ZY20210304,ZY20210303);国家重点研发计划项目(2018YFC1503801)
作者简介:邱忠超(1987-),男,副教授,博士,研究方向为灾害监测技术与工程安全、地磁观测技术与仪器.E-mail:qiuzc1987@163.com
通讯作者:王业伟(1995-),男,硕士研究生,研究方向为灾害监测技术与仪器.E-mail:17853515197@163.com
更新日期/Last Update: 1900-01-01