无线传感器网络覆盖率与节能性研究

Reaserch of coverage ratio and energy saving in wireless sensor network

在无线传感器网络中,节点的能量是有限的,因此各节点覆盖区域的重叠度必须减少,而且对节点的能量必须合理利用,以延长网络生命周期。提出了一种基于能量感知的区域覆盖算法,在该算法中,活动节点根据簇内每个传感器节点的覆盖区域和剩余能量来确定,在保持网络高覆盖率的情况下,使活动节点的数目最小化。仿真结果表明,相较于其他算法,提高了网络覆盖率,并能够获得更长的生命周期。

Due the limited energy of sensor nodes in wireless sensor network, overlap area of coverage among sensor nodes should be reduced, and the energy must be intelligently used to increase network lifetime. Therefore, we propose an energy aware- based area coverage algorithm. In this algorithm, the active sensing nodes are determined by the area they covered and their residual energy values. The work aims to minimize the number of active nodes on the basis of preserving the coverage of network. Results from simulation show that algorithm offers better performance in terms of coverage ratio and achieves better lifetime compared to the others.