WSNs中节点协同声源定位协议研究  

Research on acoustic source localization protocol based on sensors collaboration in WSNs

作　　者：夏娜[1,2] 唐树青[1] 赵娟[1] 

机构地区：[1]合肥工业大学计算机与信息学院,安徽合肥230009 [2]合肥工业大学安全关键工业测控技术教育部工程研究中心,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2011年第10期1492-1495,1600,共5页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(61004103);高等学校博士学科点专项科研(新教师)基金资助项目(20070359029)

摘　　要：声源定位是无线传感器网络重要的应用领域之一。由于实际环境中的声源大部分是运动的,因此设计一种快速准确的声源定位协议是关键。文章研究了一种多传感器节点协同的声源定位协议,完整考虑了节点处理声音和射频信号的响应时间,分析了它们对该声源定位协议定位精度的影响,推导出声源定位边界性条件。实验结果表明该协议相对于现有的精确声源定位方法具有分布式可实现、实时性好、资源占用少等优点,适用于复杂场景中的动态声源定位。Acoustic source localization is an important application in wireless sensor networks（WSNs）. Because most of sound sources are moving in surveillance field, it is a key problem to design a fast and accurate acous- tic source localization protocol. This paper presents an acoustic source localization protocol based on the multi- sensor collaboration. The responding time of processing sound and RF signals for sensors is taken into ac- count, the influence of them on the localization accuracy of the protocol is analyzed, and the boundary condi- tions for the protocol are obtained. Experiment results show that the proposed protocol can be realized in a distributed manner with high real-timeness and little hardware resource occupation, so it is suitable for the dy- namic acoustic source localization in complicated scenes.

关 键 词：无线传感器网络 声源定位 节点协同 边界条件 

分 类 号：TP393.028[自动化与计算机技术—计算机应用技术]