abstract
A fiber Bragg grating (FBG) accelerometer based on cross-type diaphragm was proposed and designed, in which the cross-beam acts as a spring element. To balance the sensitivity and stability, the accelerometer structure was optimized. The experimental results show that the designed device has a resonant frequency of 556 Hz with a considerable wide frequency bandwidth of up to 200 Hz, which is consistent with the simulation. The sensitivity of the device is 12.35 pm/g@100 Hz with a linear correlation coefficient of 0.99936. The proposed FBG accelerometer has simple structure and strong anti-interference capability with a maximal cross-error less than 3.26%, which can be used for mechanical structural health monitoring.
keywords
FBG ACCELEROMETER; VIBRATION SENSOR; DESIGN
subject category
Optics
authors
Wei, HM; Zhuang, CQ; Che, JW; Zhang, DW; Zhu, MS; Pang, FF; Caucheteur, C; Hu, XH; Nedoma, J; Martinek, R; Marques, C
our authors
Carlos Marques
Assistant ProfessorProjects
Nano-argilas para remoção/captura de fosfatos (P) e sua reutilização como fertilizante (NATURAL)
Associated Laboratory CICECO-Aveiro Institute of Materials (LA/P/0006/2020)
acknowledgements
National Key Research and Development Program of China (2023YFB3209500) ; National Natural Science Foundation of China (62375237) ; Natural Science Foundation of Shanghai Municipality (20ZR1420300) ; Yangtze River Delta Community of Sci-Tech Innovation Field Program (23002400300) ; Fundac & atilde;o para a Ciencia e a Tecnologia (LA/P/0006/2020, PTDC/EEI-EEE/0415/2021, UIDB/50011/2020, UIDP/50011/2020) .