Distributed FBG accelerometer based on signal reconstruction

Zhaoxia Wu; Aijuan Song; Dongmei Yan; Zhiquan Li

doi:10.1117/12.806242

9 October 2008 Distributed FBG accelerometer based on signal reconstruction

Zhaoxia Wu, Aijuan Song, Dongmei Yan, Zhiquan Li

Proceedings Volume 7127, Seventh International Symposium on Instrumentation and Control Technology: Sensors and Instruments, Computer Simulation, and Artificial Intelligence; 712704 (2008) https://doi.org/10.1117/12.806242
Event: Seventh International Symposium on Instrumentation and Control Technology, 2008, Beijing, China

Abstract

This paper presents a measuring system of vibration acceleration for acoustic emission wave using wavelet signal reconstruction technology. Continuous wave modulation frequency and wavelength division multiplex technology are adopted to realize distributed sensing system demodulation. Double FBGs acceleration probe with compressive stress and tensile stress applying simultaneity is designed. In this way, the influence of temperature noise on sensing signals is eliminated and measurement sensitivity and resolution are enhanced. Using wavelet signal processing methods not only completed the optical wavelength absolute code, improve imbalanced and nonlinear optical signal efficiently, but also reconstruct micro accelerate signal. This system has some advantages such as simple structure, high scan frequency, high resolution and good linearity.

Citation Download Citation

Zhaoxia Wu, Aijuan Song, Dongmei Yan, and Zhiquan Li "Distributed FBG accelerometer based on signal reconstruction", Proc. SPIE 7127, Seventh International Symposium on Instrumentation and Control Technology: Sensors and Instruments, Computer Simulation, and Artificial Intelligence, 712704 (9 October 2008); https://doi.org/10.1117/12.806242

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