基于RFID和低占空比机会路由协议的冷链物流监控系统设计

Design of Monitoring System for Cold Chain Logistics Based on RFID and Low Duty Cycle Opportunistic Routing

摘要:

针对现有冷链物流监控系统往往侧重于系统软硬件设计或仅对感知层获取的数据进行压缩融合处理,没有考虑到可靠、节能和短路径路由协议的设计,设计了一种基于RFID和低占空比机会路由协议的冷链物流监控系统；首先给出了系统总体结构框图,并对各组成部分即RFID标签,标签阅读器、节点和汇聚节点均进行了硬件设计,然后,设计了一种基于低占空比休眠机制的机会型路由协议,通过汇聚节点广播Hello数据包确定数据传输方向和邻居候选节点集,在此基础上进一步通过预测候选节点在某时刻的状态来确定是否为最终的候选节点获得转发机会；通过部署实验进行测试,结果证明文章设计的系统能实时有效地对冷链物流系统进行有效监控,较其它方法,具有数据传输路径短、数据包到达率高和数据延时短的优点,具有较大的优越性。

Abstract:

Owing to the given cold chain logistics monitoring system paying attention to the system software and hardware or the compress and fusion manage, not considering the feasibility, energy-saving and short-part routing protocol design. Therefore, a cold chain logistics monitoring system based on RFID and Low Duty Cycle Opportunistic routing is designed. Firstly, the main system framework figure is given and the hardware of the parts including RFID label, label reader, node and sink node are designed. Then the Opportunistic routing with Low Duty Cycle is introduced, the sink node broadcasting the Hello data packet to get the data transferring direction and neighbor selective node set, and the states for the neighbor selective node set are predicted to obtain the final selective nodes with opportunity. The experiment is tested to show the system in this paper can monitoring the system effectively, and compared with the other methods, it has the short path of transfer, high data packet reaching rate and short delay time, so it is with big priority.