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为获得地震灾后交通生命线的损坏程度,利用无线传感器网络搭建实时监测系统。为保障系统的安全性,提出一种新的密钥管理方案。该方案基于多项式和中国剩余定理,分为系统初始化、密钥建立、节点的加入和撤销三个阶段。分析表明,新方案大大节约了节点的存储空间、计算能耗和通信能耗,适用于灾后道路可用性监测系统。
In order to obtain the damage degree of traffic lifeline after earthquake, a real-time monitoring system is built by using wireless sensor network. In order to ensure the security of the system, a new key management scheme is proposed. Based on the polynomial and China’s residual theorem, the scheme is divided into three stages: system initialization, key establishment, node joining and revocation. The analysis shows that the new scheme saves the node storage space greatly, calculates the energy consumption and communication energy consumption, and is suitable for the road availability monitoring system after a disaster.