A technique of Data Acquisition and Processing in Fiber Grating Sensing System

Abstract

Abstract The multi-channel intelligent optical sensing technology is used in the gyroscope, and the optical fiber sensing technology is optimized through the fiber grating sensing system for data acquisition and processing. The MAX120 chip is used to realize the A/D conversion of the initial spectral signal, the hardware system connects the optical fiber sensor to realize the organic integration between the circuit components. And the preprocessing process of the intelligent information signal is realized through the two steps of data transformation filtering and improving the spectral resolution of the signal. It can solve the problems of slow acquisition speed and low signal-to-noise ratio in the traditional spectral acquisition system. After system testing, it is concluded that compared with the traditional spectral acquisition system, the time of primary spectral acquisition in the intelligent information signal spectral acquisition system based on optical fiber sensing is saved by 1.47s, and the signal-to-noise ratio is improved by 14dB.