基于虚拟力算法的WMSNs覆盖研究

为了提高无线多媒体传感器网络（WMSNs）区域覆盖率，在传感器节点随机部署后，通过调节传感器节点的感知方向，使节点从感知重叠区域向覆盖盲区转动，提高网络覆盖率。针对现有算法中存在覆盖效率和覆盖率不能统一的问题，提出一种改进的虚拟力覆盖算法（VFARCR），该算法利用传感器节点感知扇形区域质心点间的斥力调节感知方向，且通过传感器节点间的覆盖冗余度的决定方向调整的大小，虚拟力和覆盖冗余度共同控制传感器的转动。仿真实验表明：该算法提高了覆盖效率和覆盖效果，提高了虚拟力覆盖算法的性能。

Research on WMSNs coverage based on virtual force algorithm

In order to improve area coverage rate of wireless multimedia sensor networks(WMSNs),after sensor nodes are randomly deployed,by regulating sensing direction of sensor nodes,enable node rotates from perception overlapping areas to cover blind areas,so as to enhance network coverage rate. Aiming at problem of existing algorithms that coverage efficiency and covering rate can’t be unified,propose an improved virtual force algorithm related with coverage redundancy(VFARCR),the algorithm using sensor nodes to sense repulsion between the centroid point of fan-shaped area,adjust sensing direction,and size of direction adjusting is determined by coverage redundancy,virtual force and coverage redundancy control rotating of sensor collectively. Simulation results show that the algorithm improves coverage efficiency and coverage effect and improve performance of virtual force covering algorithm.