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在无线传感器网络中,由于节点能耗的不均衡导致节点感知半径的不同.针对这种复杂环境的应用,提出了一种分布式冗余检测算法,给出了相应的冗余检测准则,并对该准则的合理性进行了理论分析.在保持网络原始覆盖质量的前提下,能够更充分地检测冗余节点.仿真实验表明,复杂环境中节点感知半径相同时,算法激活的工作节点数目少,冗余检测完整;感知半径不同时,算法仍能充分、有效地检测冗余节点,从而节省能量、延长网络生存时间.
In wireless sensor networks, node perceived radiuses are different due to unbalanced energy consumption of nodes.For the application of this complex environment, a distributed redundancy detection algorithm is proposed and the corresponding redundancy detection criteria are given. The rationality of the criterion is analyzed theoretically, and the redundant nodes can be detected more fully while maintaining the original coverage quality of the network.The simulation results show that the number of working nodes activated by the algorithm is small when the perceived radius is the same in complex environments , The redundancy detection is complete; when the sensing radius is different, the algorithm can still fully and effectively detect redundant nodes, thus saving energy and prolonging network lifetime.