摘要:
无线传感器网络(Wireless sensor network, WSN)覆盖控制通常采用基于二元感知模型的几何计算方法休眠冗余节点, 其算法在实际应用中受到局限, 不够精确. 针对此问题, 本文采用概率感知模型, 提出新的覆盖控制算法, 将提高能量利用效率作为重要指标, 采用节点轮换周期工作机制, 每个周期逐个唤醒部分节点, 组成满足网络覆盖要求的覆盖集, 实现降低能耗、均衡节点能量的目的. 概率感知模型描述网络的覆盖能力更精确, 算法不受感知模型的限制, 原理简单, 易实现, 仿真结果验证了本算法的有效性.
Abstract:
Wireless sensor network (WSN) coverage control commonly makes nodes dormancy by geometry algorithm based on duality apperceiving model. The algorithm is limited in practical application and not accurate enough. Aiming at the problem, this paper adopts the probability perception model, puts forward a new coverage control algorithm, and takes the improvement of energy using efficiency as important index. It adopts the nodes alternate periodic work mechanism that in each period, nodes are aroused one by one to form a coverage set required by network coverage. It realizes energy consumption decrease and node energy equilibrium. The probability perception model describes the coverage ability of the network more accurately, and the algorithm is not limited by the perception model. It has plain principle and is easy to realize. The simulation results have validated its effectiveness.
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