Energy efficient camera node activation control in multi-tier wireless visual sensor networks

作     者：Aghdasi, Hadi S. Nasseri, Sara Abbaspour, Maghsoud 

作者机构：Shahid Beheshti Univ Fac Elect & Comp Engn Dept Comp Engn Wireless Networking LabGC Tehran *** Iran 

出 版 物：《WIRELESS NETWORKS》 (无线网络)

年 卷 期：2013年第19卷第5期

页      面：725-740页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：Wireless visual sensor networks Multi-tier network topology model Energy efficiency Camera nodes Clustering protocols 

摘      要：Multi-tier topology model is an appropriate choice to accomplish the application-specific tasks in many wireless visual sensor networks. In a general multi-tier architecture, the first tier is composed of scalar nodes. This tier activates the camera nodes of the second tier within its communication range only when it is necessary. However, in many cases the activated camera nodes do not detect any events because of the directionality of their sensing range. In this paper, we present field of view clustering as a new clustering method to reduce the unneeded visual activations of camera nodes and overcome the waste of energy. We also improve this clustering method by presenting a solution named Random Neglect. As the simulation results indicate, our proposed solutions are successful in saving the energy of camera nodes and prolonging network lifetime while providing high detection performance.