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针对无线传感器网络在二维平面应用场景中的覆盖控制问题,提出了一种基于泰森盲区多边形形心的覆盖控制部署策略(blind-zone centroid-based scheme,BCBS).BCBS先对监测区域做Voronoi图划分以得到被每个传感器节点覆盖的泰森多边形,而后根据泰森多边形顶点的覆盖情况分析得出泰森多边形内的盲区,并构造与盲区形状相近的多边形,最后以该多边形的几何中心作为传感器节点移动的候选目标位置,从而达到提高网络覆盖率的目的.仿真实验结果表明,BCBS在覆盖率、节点分布均匀性与节点覆盖效率等方面相比CBS有明显优势.
Aiming at the coverage control problem of wireless sensor network in two-dimensional planar application scenario, a blind-zone centroid-based scheme (BCBS) based on the Tyson blind polygon centroid is proposed. Voronoi diagram is divided to get the Tyson polygons covered by each sensor node. Then the blind area in the Tyson polygon is analyzed according to the coverage of the Tyson polygon vertex, and the polygons with similar shape to the blind area are constructed. Finally, Center as a candidate target position for sensor node movement, so as to achieve the purpose of improving network coverage.The simulation results show that BCBS has obvious advantages over CBS in coverage, node distribution uniformity and node coverage efficiency.