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针对无线传感器网络实际应用中遇到的环境损毁和能量耗尽的问题,本文首先对网络综合故障进行建模,获取满足综合故障容忍能力和网络生命期双重需求的网络节点度和节点度上限值的取值规律,并结合由无标度特征导出的两者关系,从而求得最优节点度上限值,最终引入关于节点度上限值的适应度函数,提出了容忍环境损毁和能量耗尽综合故障的无标度容错拓扑演化模型.仿真实验结果表明,该模型演化生成的无标度拓扑对环境损毁和能量耗尽具有较好的容错性,并能够有效地延长网络生命期.
In order to solve the problem of environmental damage and energy exhaustion in practical application of wireless sensor networks, this paper first models the network comprehensive faults and obtains the network node degree and node degree upper limit that meet the dual requirements of comprehensive fault tolerance and network lifetime The value of the law of value and the relationship between the two derived from the scale-free features, so as to obtain the optimal node degree upper limit, and finally introduce the fitness function of node upper limit, put forward to tolerate environmental damage and energy Scale-free and fault-tolerant topology evolution model is exhausted, and the simulation results show that the scale-free topology generated by this model has good fault tolerance for environmental damage and energy depletion, and can effectively extend the network lifetime.