计算机工程
計算機工程
계산궤공정
COMPUTER ENGINEERING
2015年
4期
14-18,25
,共6页
有向传感器网络%有向感知模型%复杂区域%网格划分%覆盖优化%虚拟势场
有嚮傳感器網絡%有嚮感知模型%複雜區域%網格劃分%覆蓋優化%虛擬勢場
유향전감기망락%유향감지모형%복잡구역%망격화분%복개우화%허의세장
directional sensor network%directional sensing model%complex area%mesh partition%coverage optimization%virtual potential field
在现有的有向传感器网络中,节点模型多以质心点围绕扇形顶点进行旋转,由于此类模型中节点旋转面积是一个整圆,因此会增加网络能源消耗和部署时间。针对复杂区域的无线传感器网络覆盖优化问题,使用以扇形节点围绕质心点转动的节点模型,提出一种基于虚拟势场的复杂区域覆盖优化算法( COACA),通过减小节点的旋转面积实现部署优化。针对影响算法覆盖率的相关参数进行仿真实验,并与PFPCE算法进行对比,实验结果验证了COACA算法在覆盖率和时间效率上的优越性。
在現有的有嚮傳感器網絡中,節點模型多以質心點圍繞扇形頂點進行鏇轉,由于此類模型中節點鏇轉麵積是一箇整圓,因此會增加網絡能源消耗和部署時間。針對複雜區域的無線傳感器網絡覆蓋優化問題,使用以扇形節點圍繞質心點轉動的節點模型,提齣一種基于虛擬勢場的複雜區域覆蓋優化算法( COACA),通過減小節點的鏇轉麵積實現部署優化。針對影響算法覆蓋率的相關參數進行倣真實驗,併與PFPCE算法進行對比,實驗結果驗證瞭COACA算法在覆蓋率和時間效率上的優越性。
재현유적유향전감기망락중,절점모형다이질심점위요선형정점진행선전,유우차류모형중절점선전면적시일개정원,인차회증가망락능원소모화부서시간。침대복잡구역적무선전감기망락복개우화문제,사용이선형절점위요질심점전동적절점모형,제출일충기우허의세장적복잡구역복개우화산법( COACA),통과감소절점적선전면적실현부서우화。침대영향산법복개솔적상관삼수진행방진실험,병여PFPCE산법진행대비,실험결과험증료COACA산법재복개솔화시간효솔상적우월성。
In the existing directional sensor networks,the centroid point of node model mostly rotates around the sector vertex. As in this model,the node rotation area is a full circle,and therefore multiplies the network energy consumption and deployment time. For coverage optimization problem of Wireless Sensor Network( WSN) in complex area,this paper uses the new directional model which the sector nodes rotate around the centroid in the previous work,then presents a coverage optimizing algorithm in complex area based on virtual potential field ( COACA ) to implement deployment optimization by reducing the node’ s rotation area. Finally,it makes simulation for this algorithm to explore the parameters which will affect the coverage ratio and contrast with PFPCE algorithm. The simulation results show the high performance of the COACA algorithm in both coverage radio and time efficiency.