基于长周期光纤光栅的动态检测技术研究

A Dynamic Measuring Method Based on Long-period Fiber Grating

长周期光纤光栅作为一种新型的传感器件,其应用价值大。该文从实用化的角度出发,根据长周期光纤光栅的边沿滤波特性和弯曲特性,以Labview为工具,设计了一套长周期光纤光栅弯曲传感器系统,并将其用于对振动信号的动态信号采集应用研究中,取得了较好的效果。由于该系统是基于光强解调,信号采集速度目前可达6 kHz。

As a new kind of sensor, long-period fiber grating has plenty of advantages. Based on the edge filtering characteristic and bending characteristic of long-period fiber grating, a dynamic measuring system is built up u- sing Labview as a tool. The system is applied to the dynamic signal collection of the vibrating signal and good results have been obtained. Since the system is based on the intensity demodulation technique, its demodulation speed is up to 6 kHz.