Design And Implementation Of Optical Fiber Sensor Network Data Acquisition And Analysis System

Optical fiber sensors are much concerned in the field of sensors, because of its so much advantages compared to conventional electrical sensors that without power, no radiation, and anti-electromagnetic interference. Fiber optic sensors are widely used in fiber optic mutual inductance, surveying, medical, orientation, perimeter security, disaster warning, structural health monitoring and many other fields. Optical fiber sensor network includes sensoring and conducting, which are constituted by the common fiber cable.Optical fiber vibration detecting system is one of the applications of the optical fiber sensors, which are widely used in monitoring and management of information and technology like perimeter security, border warining, etc. Optical fibers are erected on the perimeter fence or buried underground.After being external vibration, optical fiber get the vibration signal, then optical signal is demodulated into electrical signal after transmission through the optical fiber to the all-fiber interferometer module. Vibration signal are acquisited by the data acquisition model, and analysed through algorithm, and at last used for automatic monitoring, identification and alarm according to appropriate parameters.This paper designs and implements the optical fiber sensor network data acquisition and analysis system. Firstly, it elaborates the basic principles of optic fiber sensing technology, research and development status on the world, and its applications, development trends. Details on the basis of optical fiber vibration detection system around the optical fiber vibration detection system, design the optical fiber sensor network data acquisition module and data analysis module, network communication module in detailed. Finally implements the optical fiber vibration detecting alarming system comprised by acquisition and analysis that based on ARM embedded platform. Vibration optical fiber processing unit can acquisit fiber signal through20-channel parallel AD, after analysis and processing, send warning report to server. The server monitor this system through remote network and parameter settings of alarming. System power consumption, wireless transmission, installation flexible, breaking the traditional habit of wiring cabling way, has great market prospects.