基于偏振干涉的光纤光栅无线传感网络系统

Fiber grating wireless sensing network based on polarization interference

将光纤光栅传感与无线传输相结合,建立传感节点光路结构理论模型,分析了结构参数对光纤环镜(FLM)特性的影响。以数学模型为依据,优化了S-MAC协议的工作时间、休眠时间等参数,时延和能耗都有很好的改善。设计了基于保偏结构的光纤光栅无线传感网络(WSN)和基于LabVIEW的参数测定软件、解调系统监控软件。参数测定软件使得系统脱离实验室进入应用领域;对无线网络传输结构和S-MAC协议优化的研究为网络节点的可移动和可重布提供了保障。

Through combining fiber grating sensor with wireless transmission,we established the theoretical model of optical sensor node configuration to analyze the impacts on the characteristics of the fiber loop mirror.The parameters of S-MAC protocol,such as working hours and dormancy hours,are optimized according to the mathematical model,and the delay and energy consumption are improved well.At the same time,we design a fiber grating wireless sensing network based on polarization-maintaining configuration,the pa...