VIBRATION WIRE TYPE MICRO-VIBRATION AND SOUND EMISSION SENSING DEVICE WITH MICRO-NANOFIBER BASED FIBER GRATING

摘要

Disclosed is a vibration wire type micro-vibration and sound emission sensing device with a micro-nanofiber based fiber grating (1). The sensing device comprises the micro-nanofiber based fiber grating (1), wherein a carbon fiber (2) covers the outside of the micro-nanofiber based fiber grating (1), and a silver coating later (3) is arranged outside of the carbon fiber (2). The vibration wire type micro-vibration and sound emission sensing device with the micro-nanofiber based fiber grating (1) has the advantages of being uncharged, having anti-electromagnetic interference, good durability, a simple structure, a compact layout, a high sensitivity, a wide response range and monitoring in real time, and same can suppress noise by itself with regard to the detection of a sound emission signal. The sensing device can satisfy the sensing requirements of a vibration or sound emission signal in the fields of engineering construction, structural health monitoring, mineral development, aeronautics and astronautics, precise measurement, etc., in particular on an occasion in which a sensor needs to work for a long-time, and needs to be explosion-proof, miniaturized and resist electromagnetic interference.