无线多媒体传感器网络中的覆盖增强算法

Coverage enhancement algorithm in wireless multimedia sensor networks

针对无线多媒体传感器网络节点感知范围的视角性和方向性,提出了基于虚拟力和粒子群算法的覆盖增强算法。该算法通过传感器节点之间存在着的大小不等的引力或者斥力的虚拟力作用,调整传感器节点的位置,使网络中节点的分布合理和均匀;通过粒子群优化算法调整有向传感器节点的工作方向以达到覆盖的最大化。仿真实验结果表明,基于虚拟力和粒子群算法的覆盖增强算法能很好的提高网络的覆盖率。

Ovg, ing to the nodes of multimedia wireless sensor networks （MWSNs） are directional, the coverage enhancement based on virtual forces and particle swarm is proposed. First, the location of sensor nodes are adjusted by the virtual force existing among sensor nodes, gravity or repulsion, to blance the location. Then the work direction is adjusted by particle swarm optimization to achieve maximum coverage. Simulation results show this new methord improves the coverage rate efficiently.