Study on a fiber Bragg grating accelerometer based on push-pull compliant cylinders

Dakuan Yu; Xueguang Qiao; Xiangyu Wang; Jianlin Zhao

doi:10.1117/12.2548253

20 December 2019 Study on a fiber Bragg grating accelerometer based on push-pull compliant cylinders

Dakuan Yu, Xueguang Qiao, Xiangyu Wang, Jianlin Zhao

Proceedings Volume 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019); 112092B (2019) https://doi.org/10.1117/12.2548253
Event: Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 2019, Xi'an, China

Abstract

A compact double fiber Bragg gratings(FBGs) accelerometer based on push-pull compliant cylinders is proposed. The mechanical model is demonstrated. The accelerometer contains four parts, double cylinders, double FBGs, inertial mass, shell. Double cylinders and mass block which can reduce the cross-sensitivity and protect the FBGs from being damaged. The material of the cylinders is two-component vulcanized silicone rubber. The amplitude-frequency and sensitivity of the accelerometer are theoretically analyzed and experimental measured. Experimental results show that the resonant frequency of the accelerometer is 640Hz, the sensor has a broad flat frequency range from 20 to 500Hz, the sensitivity of the accelerometer is about 48.5pm/G with a linearity of 0.999, while the two FBGs is contributed to the sensitivity enhancement, temperature and transverse sensitivity independent. The accelerometer has a wide frequency and high sensitivity, making it a good candidate for the cross-well micro-seismic monitoring..

Citation Download Citation

Dakuan Yu, Xueguang Qiao, Xiangyu Wang, and Jianlin Zhao "Study on a fiber Bragg grating accelerometer based on push-pull compliant cylinders", Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 112092B (20 December 2019); https://doi.org/10.1117/12.2548253

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