Distributed vibration sensor with a high strain dynamic range by harmonics analysis

被引：6

作者：

Chen, Mengmeng ^{[1
,2
,3
]}

Zhu, Runze ^{[1
,2
]}

Luo, Junxian ^{[1
,2
]}

Masoudi, Ali ^{[4
]}

Chen, Ye ^{[1
,2
]}

Brambilla, Gilberto ^{[4
]}

Xu, Fei ^{[1
,2
]}

机构：

[1] Nanjing Univ, Coll Engn & Appl Sci, Nanjing 210023, Peoples R China

[2] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210023, Peoples R China

[3] Nanjing Xiaozhuang Univ, Sch Elect Engn, Nanjing 211171, Peoples R China

[4] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, England

来源：

OPTICS AND LASER TECHNOLOGY | 2023年 / 159卷

基金：

中国国家自然科学基金;

关键词：

Distributed vibration sensor; Harmonics analysis; Dynamic range; FIBER ACOUSTIC SENSORS;

D O I：

10.1016/j.optlastec.2022.109006

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Distributed vibration sensors (DVSs) have important applications in industrial production. A large strain dynamic range is very important for DVSs, but difficult to achieve as it often requires a complex sensing system or cumbersome data processing. This study shows that the strain dynamic range of the DVS can be improved by analyzing the harmonic numbers in the vibration response spectrum, and the vibration amplitude can be quantitatively measured with a strain resolution of 0.78 mu epsilon for each additional harmonic. The system and data analysis method can significantly improve the strain dynamic range in comparison with traditional DVS based on the intensity or polarization information.

引用

页数：7

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