强拓扑关系下的光纤传感器网络节点安全定位系统设计

Design of node security positioning system in optical fiber sensor networks under strong topological relationship

强拓扑关系下光纤传感器网络节点数据量多,易受环境影响导致定位出现误差,为此,设计一种基于节点协作的安全定位系统。硬件部分,搭载酷睿i9-10980XE加强式处理器、超高频双片定位芯片以及稳压电路,可完成数据采集、分类、组合等操作;软件部分,凭借节点协作算法获得在不同位置处传感射频信号,调节衰减参数使所有位置接收到的信号强度一致,根据源点收发信号时延量与预定点关联度,判定预定点位置。仿真实验证明,所提系统定位算法误差最高为3%,定位精度平均为98.2%,存在外界侵入的环境下也能保证收敛速度,仅需38次迭代,整体实用性强。

Under the strong topological relationship,the nodes of optical fiber sensor network have a large amount of data,which is easily affected by the environment,leading to positioning errors.Therefore,a safe positioning system based on node cooperation is designed.Hardware part,equipped with Core i9-10980 XE enhanced processor,UHF dual-chip positioning chip and voltage stabilizing circuit,can complete data collection,classification,combination and other operations;In the software part,the radio frequency signals sensed at different positions are obtained by means of the node cooperation algorithm,the attenuation parameters are adjusted to make the received signal strengths at all positions consistent,and the position of the predetermined point is determined according to the correlation degree between the time delay of receiving and sending signals at the source point and the predetermined point.Simulation results show that the maximum error of the positioning algorithm of the proposed system is 3%,the average positioning accuracy is 98.2%,and the convergence speed can be guaranteed even in the presence of external intrusion,with only 38 iterations,and the overall practicability is strong.