摘要
为解决风电场无线传感器网络节点的部署问题,研究了2.4 GHz频率无线信道传播特性。在设定的6个高度层上,风电场无线信道传播特性基本符合对数路径损耗模型;随着收发节点距离的增加,接收信号强度呈现出递减的趋势,丢包率总体呈现递增的趋势,由于风电场复杂的环境以及强电磁干扰,丢包率在一些时段会出现较大的波动;通过风电场中布置的发送接收节点间的距离、天线架设的高度以及接收到的信号的强度之间的关系拟合建立衰减模型,衰减系数和信号强度与天线高度之间均符合二次多项式关系模型。试验结果表明:该二次多项式关系模型能够为风电场中布置无线传感网络提供依据。
The wireless sensor networks （ WSN） nodes communicate with each other via wireless signals. Thesignal propagation characteristics of 2. 4 GHz wireless channels in wind farm are studied. The results of regressionanalysis show that the path loss of wireless channel propagation characteristics basically follows the logarithmdistance model at the six different height layers. With the increase of the distance between the transmitterand receiving nodes, the received signal strength shows a decreasing trend, and the packet loss rate presentesan increasing trend. Due to the complex environment and strong electromagnetic interference of the windfarm, the packet loss rate may fluctuare greatly in some periods. The attenuation model is fitted by the relationshipsof the distance between the transmitting and receiving nodes arranged in the wind farm, the height of theantenna erection, and the intensity of the received signal. Both attenuation coefficients and signal intensity andantenna height are in accordance with quadratic polynomial relationship model, respectively. The experimentalresults show that this quadratic polynomial relation model can provide the basis for the layout of WSN in windfarms.
作者
李刚
吴潮
刘佳林
王腾飞
LI Gang;WU Chao;LIU Jia-lin;WANG Teng-fei(Mechatronics T＆R Institute, Lanzhou Jiaotong University, Lanzhou 730070, China;Engineering Technology Centre for Informatization of Logistics ＆ Transport Equipment, Lanzhou 730070, China;Research Institute of Logistics and Information Techonology, Lanzhou 730070, China)
出处
《测控技术》
CSCD
2018年第2期25-28,共4页
Measurement & Control Technology
基金
甘肃省科技支撑计划项目(1604GKCA007)
兰州交通大学优秀科研平台(团队)资助计划(201604)
