Research of the vibrating infrasonic sensor based on Fiber Bragg Grating

Haohua Liu, Zhou Wan, Yiyang Li, Zhunen Chen

College of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650500, China

Current research on infrasound more extensive and in-depth, the sensor is essential prerequisite for infrasonic detection, in order to overcome some lack of current infrasound sensor for detecting the infrasound, paper innovative design a vibrating wire sensor structure, and make it capable of receiving a full rang infrasound, range adjustable, easy installation, etc. and use fiber Bragg grating which has obvious advantages in terms of low-frequency detection as the sensing element. Test the performance of the sensor and the results show that the average of the sensor is 6.11%, within 1Hz-20Hz range, the sensor has good linearity and small error, has practical value.