基于改进PSO的WMSNs覆盖增强算法  

A Coverage Enhancing Algorithm Based on Improved PSO for Wireless Multimedia Sensor Networks

作　　者：郭剑[1,2,3] 孙力娟[1,2,3] 韩崇[1] 肖甫[1,2,3] 王汝传[1,2,3] 

机构地区：[1]南京邮电大学计算机学院,江苏南京210003 [2]江苏省无线传感网高技术研究重点实验室,江苏南京210003 [3]宽带无线通信与传感网技术教育部重点实验室,江苏南京210003

出　　处：《微电子学与计算机》2012年第5期1-5,9,共6页Microelectronics & Computer

基　　金：国家自然科学基金项目(60973139;61003039;61003236;61171053);江苏省科技支撑计划(工业)项目(BE2010197;BE201019);江苏省级现代服务业发展专项资金;江苏省高校自然科学基础研究项目10KJB520013;10KJB520014);高校科研成果产业化推进工程项目(JH10-14);国家和江苏省博士后基金(20100480048;20100471353;1001006B);江苏高校科技创新计划项目(CX10B-196Z;CX10B-197Z;CX10B-198Z;CX10B-199Z;CX10B-200Z);江苏省六大高峰人才项目(2008118);教育部高等学校博士学科点专项科研基金(20103223120007);江苏省计算机信息处理技术重点实验室基金(KJS1022);江苏高校优势学科建设工程资助项目(yx002001)

摘　　要：对无线多媒体传感器网络(WMSNs)的覆盖增强问题进行了研究.在WMSNs网络中,视频、图像节点的视角范围有限,只能监控周围的部分区域.由于节点数量众多、部署方式受限等原因,网络中往往存在大量的监测重叠与监控盲区,需要对各节点的感知方向进行优化,以提高网络的监控质量.文中基于有向感知模型,提出了一种覆盖增强算法MCE.MCE对各节点的感知方向进行调整,并使用了改进的PSO算法来计算求解.仿真实验表明,MCE算法能够有效地提高网络的覆盖率.The issue of coverage enhancement in Wireless Multimedia Sensor Networks （WMSNs） was studied. In WMSNs, nodes of video and image had limited view range and could monitor only part of the surrounding. Due to the large quantity of sensor nodes and the limitation of deploying methods, phenomenon of monitoring overlapping and blind area occurred frequently. Hence, to improve monitoring quality, optimizing the monitoring directions of the sensors was necessary. This problem was discussed in this paper, and based on the directional sensing model, a coverage enhancing algorithm called MCE was proposed. MCE used an improved particle swarm optimization algorithm and adjusted the directions of all sensors. Simulation results showed that, MCE algorithm improved the coverage greatly.

关 键 词：覆盖增强 无线多媒体传感器网络 粒子群优化算法 有向感知模型 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]