机械振动无线传感器簇状网络路径感知同步触发方法  

Path perception synchronization trigger method for mechanical vibration wireless sensor cluster networks

作　　者：付豪 汤宝平[1] 黄艺 邓蕾[1] 何灏 FU Hao;TANG Baoping;HUNG Yi;DENG Lei;HE Hao(The State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing 400030,China)

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400030

出　　处：《振动与冲击》2022年第6期147-152,共6页Journal of Vibration and Shock

基　　金：国家自然科学基金(51675067);重庆市重点基金(cstc2019jcyj-zdxmX0026)。

摘　　要：针对机械振动无线传感器网络依赖时钟、信标同步、节点间通信同步与同步触发精度较低的问题,提出了一种簇状网络下的路径感知同步触发方法。首先采用双模复用方式进行节点架构设计,然后提出伴随组网方法,构建簇状网络下的网络拓扑结构;接着提出以辅助器测量为核心的路径感知时间测量方法,摆脱时钟、信标与节点间通信同步依赖并提高同步触发精度;最后提出最大时间差值补偿与时间先行同步触发测量方法,解决时间延时补偿与系统指令中断问题。试验表明,路径感知同步触发最大误差在50~60μs,最小误差在10~16μs。Aiming at the problem that mechanical vibration wireless sensor networks rely on clock synchronization,beacon synchronization,and synchronization of communication between nodes and also considering its low accuracy,a path sensing synchronization trigger method for cluster networks was proposed.Firstly,the dual-mode multiplexing method was used to design the node architecture,and the adjoint networking method was applied to construct the network topology under the cluster network.Then,the path sensing time measurement method with the auxiliary device measurement as the core was adopted to get rid of the dependence on beacon and improve the synchronization trigger accuracy.Finally,the maximum time difference compensation and time first synchronous trigger measurement method were proposed to solve the problem of time delay compensation and system instruction interruption.The experimental results show that the maximum error of path sensing synchronization trigger is between 50 and 60μs,and the minimum error is between 10μs and 16μs.

关 键 词：机械振动监测 双模复用 无线传感器网络 同步触发 伴随组网 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术] TH165.3[自动化与计算机技术—计算机科学与技术]