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将无线传感器网络技术引入到安全性要求较高的特种物流运输中,以传感器节点代替射频标签,从而构成双向通信能力,实现对物品节点的组网.基站节点对网络成员进行监控,在发现丢失时及时报警,实现物流环节中的自我保护.针对无线传感网络的能量效率问题和物流自保护中的信道分配和同步需求,本文对无线令牌环路由协议进行改进,引用TDMA(时分多址)机制合理控制节点休眠唤醒,减少了能量消耗,提高了能耗均衡度.同时,本文引用令牌短信来配合TDMA实现时间同步,大幅减少同步机制对信道资源和能量资源的占用,从而延长了系统寿命.通过对比不同的工作方式,证明了所提出的环形路由协议在响应时间和能耗方面的优越性.
The wireless sensor network technology is introduced into the special logistics transportation with high safety requirements and the sensor nodes are used to replace the radio frequency tags so as to form two-way communication ability and realize the networking of the article nodes. The base node monitors the network members, Timely alarm to achieve self-protection in the logistics.In view of the energy efficiency of wireless sensor networks and the demand of channel assignment and synchronization in the logistics self-protection, this paper improves the protocol of wireless token by referring to TDMA ) Mechanism to control dormancy and awakening of nodes reasonably, reducing energy consumption and improving energy consumption balance.At the same time, this paper refers to Token Messaging to achieve time synchronization with TDMA, greatly reducing the occupation of channel resources and energy resources by the synchronization mechanism, System life.Compared with different working methods, it proves the superiority of the proposed ring routing protocol in terms of response time and energy consumption.