Large Frequency Range and High Sensitivity Fiber Bragg Grating Accelerometer Based on Double Diaphragms

被引：103
作者：
Liu, Qinpeng [1 ,2 ]
Qiao, Xueguang [1 ,2 ]
Jia, Zhen'an [3 ]
Fu, Haiwei [3 ]
Gao, Hong [3 ]
Yu, Dakuan [3 ]
机构：
[1] Northwestern Polytech Univ, Shanxi Key Lab Opt Informat Technol, Xian 710072, Peoples R China
[2] Xian Shiyou Univ, Xian 710072, Peoples R China
[3] Xian Shiyou Univ, Sch Sci, Minist Educ, Key Lab Photoelect Oil Gas Logging & Detecting, Xian 710065, Peoples R China
来源：
IEEE SENSORS JOURNAL | 2014年 / 14卷 / 05期
基金：
美国国家科学基金会;
关键词：
Fiber Bragg grating (FBG); accelerometer; double diaphragms; Allan variance;
D O I：
10.1109/JSEN.2013.2296932
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A fiber Bragg grating (FBG) accelerometer based on double diaphragms is presented and experimentally demonstrated. Design, fabrication, and optimization of the FBG accelerometer are analyzed. Experimental results indicate that the FBG accelerometer provides broad flat frequency range from 50 to 800 Hz, corresponding sensitivity range from 23.8 to 45.9 pm/G, while the flatness is <3 dB. Cross-axis sensitivity is <2.1% of the main-axis sensitivity, dynamic resolution can reach 0.385 mG/root Hz, and dynamic range is 80 dB. Random error of the FBG accelerometer is analyzed by using Allan variance analysis method, which is promising in cross well seismic exploration.
引用
收藏
页码：1499 / 1504
页数：6
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