Low-frequency temperature compensation fiber Bragg grating accelerometer based on double-arched beam

被引：10

作者：

Fan, Wei ^{[1
,2
]}

Zhou, Rui ^{[1
]}

Li, Huidong ^{[1
,2
]}

Yu, Dakuan ^{[2
]}

Qiao, Xueguang ^{[1
]}

机构：

[1] Northwest Univ, Sch Phys, Xian 710072, Peoples R China

[2] Xian Shiyou Univ, Sch Sci, Xian 710065, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2023年 / 528卷

基金：

中国国家自然科学基金;

关键词：

Low-frequency; Fiber Bragg grating; Accelerometer; Temperature compensation; Double-arched beam; FBG;

D O I：

10.1016/j.optcom.2022.129058

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

To address the difficulty of existing optical sensors in meeting the requirements of low-frequency vibration monitoring in large structures, a dual-fiber Bragg grating acceleration sensor based on a double-arched beam was proposed. The difference in a wavelength shift of the two fiber gratings is used as the output signal of the accelerometer to realize the measurement of acceleration and temperature compensation in the low -frequency band. The sensitivity and resonant frequency of the accelerometer were analyzed based on the theoretical model of the sensor, and the sensitivity calibration experiment was carried out. The results show that the resonant frequency of the accelerometer is about 30Hz, the sensitivity is about 1158.6pm/g, and the temperature sensitivity can be reduced to 1.3 pm/C. The accelerometer can be used for real-time monitoring of vibration signals between 0.05 and 20 Hz.

引用

页数：6

共 25 条

[11] Induction Motors Vibration Monitoring Using a Biaxial Optical Fiber Accelerometer [J].