基于能量有效WSN优化覆盖算法的研究*

满足一定的覆盖条件下,有效地进行覆盖控制和减少能量消耗以及延长网络生存周期是无线传感器网络所研究的一项重点课题。为此，提出一种能量有效的优化覆盖算法。该算法利用贪婪算法和几何图形学相关理论知识，把目标覆盖区域节点能量构建成正态分布的网络模型，通过采集和检索数据选择最优子集以及对节点状态调度机制动态转换，可以有效地降低网络能耗，提高了节点覆盖性能的同时优化了节点的数量。仿真实验表明，该算法能够以较小的代价延长整个网络的生存周期，具有更好地适应性和稳定性。

Based on energy efficiency optimized WSN coverage algorithm

How to control coverage effectively, reduce energy consumption and prolong the lifetime of network in a certain coverage condition is an important researching project in WSN. An optimized coverage algorithm with efficient energy is proposed in this paper. With the help of greedy algorithm and the theories in geometric graphics, node energy in target coverage area is constructed in a network model of normal distribution. Selecting optimum subset through data collection and retrieval and transferring scheduling mechanism of nodes dynamically can reduce the energy consumption of network effectively, improve the covering ability of nodes and optimize the amount of nodes. The simulation experiment shows that this algorithm can prolong lifetime of the whole network at the least cost with better suitability and stability.