大坝廊道无线传感器网络节点铺设方法  

Node placement method for wireless sensor network in dam corridor

作　　者：陈娟[1] 徐力生[1] 徐蒙[1] 张帆[2] 

机构地区：[1]中南大学地球科学与信息物理学院,长沙410083 [2]中南大学机电工程学院,长沙410083

出　　处：《沈阳工业大学学报》2015年第1期109-115,共7页Journal of Shenyang University of Technology

基　　金：国家自然科学基金资助项目(51208514);国家中小企业创新基金资助项目(12C26214304879);中南大学中央高校基本科研业务费专项资金资助项目(2011QNZT007)

摘　　要：为了满足灌浆工程中智能化监控的要求,了解无线传感器网络在复杂环境下灌浆数据传输的质量情况,对2.4 GHz无线信号在大坝灌浆廊道中的传播特性进行了研究.利用现场实验测试网络性能,指出廊道环境、数据传输时延、多跳跳数及采样率对节点能耗和无线传感器网络链路质量的影响,并提出基于信号强度的、动态n值的线性节点铺设方法.该方法在链路质量降低情况下可通过铺设冗余节点和测试丢包率等方法调整节点位置,使链路快速得到恢复.通过能耗分析、丢包率测试、定位误差测量等实验对动态n值相对于固定n值在数据传输网络中的性能进行了分析.实验证明:在恶劣施工条件下,基于信号强度、动态n值的线性节点铺设方法适用于灌浆廊道通信.In order to meet the intelligent monitoring requirements in grouting engineering and understand the data transmission quality of wireless sensor networks in a complex grouting environment,the propagation characteristic of 2. 4GHz wireless signal in the dam grouting corridor was investigated. The network quality was tested with the field test,and the influence of corridor environment,data transmission delay,multi-hop number and sampling frequency on both energy consumption of nodes and link quality of wireless sensor network was studied. Then a linear node placement method based on signal strength and dynamic n value was proposed. In the case of lower link quality,the proposed method can rapidly restore the link through adjusting node position by such methods as laying the redundant nodes and testing the packet loss rate.Compared with the situation of fixed n-value,the performance of dynamic n-value in the data transmission network was analyzed with such tests as the energy consumption analysis,packet loss rate inspection and positioning error measurement. The results showthat under the harsh construction conditions,the proposed linear node placement method based on the signal strength and dynamic n-value is suitable for the data transmission in dam grouting corridor.

关 键 词：无线传感器网络 动态n值 多跳 信号强度 大坝灌浆廊道 节点铺设 丢包率 定位误差 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置] TN929.5[自动化与计算机技术—控制科学与工程]