岳学军,王叶夫,洪添胜,徐兴,刘永鑫,张宗杰.基于信道测试的橘园WSN网络部署试验[J].农业机械学报,2013,44(5):213-218.
Yue Xuejun,Wang Yefu,Hong Tiansheng,Xu Xing,Liu Yongxin,Zhang Zongjie.WSN Layout Experiment Based on Radio Frequency Propagation Tests in Citrus Orchard[J].Transactions of the Chinese Society for Agricultural Machinery,2013,44(5):213-218.
摘要点击次数: 4747
全文下载次数: 1938
基于信道测试的橘园WSN网络部署试验   [下载全文]
WSN Layout Experiment Based on Radio Frequency Propagation Tests in Citrus Orchard   [Download Pdf][in English]
  
DOI:10.6041/j.issn.1000-1298.2013.05.037
中文关键词:  橘园  无线传感器网络  信道测试  传播信道  网络部署
基金项目:现代农业产业技术体系建设专项资金资助项目(CARS—27);省部产学研结合项目(2011B090400359);国家星火计划资助项目(2012GA780043)
作者单位
岳学军 华南农业大学
南昆士兰大学 
王叶夫 华南农业大学 
洪添胜 华南农业大学 
徐兴 华南农业大学 
刘永鑫 华南农业大学 
张宗杰 华南农业大学 
中文摘要:为解决无线传感器网络(WSN)规划与快速部署问题,基于无线信道传播特性,研究橘园WSN射频信号衰减模型,指导WSN部署并进行了组网试验。选433MHz与2.4GHz载波频率,基于连续无线电波在通信码率、天线增益、调制扩频方式、数据包长度和通信距离等多因素作用下分析WSN射频信号在橘园的衰减,建立2频率射频信号接收强度与环境传播因子及通信距离间的模型,拟合R2最小值与最大值分别为0.957031与0.971218,0.9546与0.9863。通信码率低于1.2kb/s且远距离通信时,433MHz CC1110具有优势;发射功率与天线增益相同时,433MHz平均信号强度高于2.4GHz;通信码率相同时,CC2530丢包率低于CC1110。针对橘园选ZigBee设计星型WSN进行组网试验,结果表明,尽可能短数据包与较低通信码率的通信协议较好;WSN各节点平均通信成功率高于84%。
Yue Xuejun  Wang Yefu  Hong Tiansheng  Xu Xing  Liu Yongxin  Zhang Zongjie
South China Agricultural University;University of Southern Queensland;South China Agricultural University;South China Agricultural University;South China Agricultural University;South China Agricultural University;South China Agricultural University
Key Words:Citrus orchard  WSN  Propagation test  Propagation channel  Network layout
Abstract:The layout of wireless sensor network (WSN) in citrus orchards was analyzed concerning radio frequency (RF) signal strength attenuation and packet loss rate of WSN based on radio wave propagation characteristics. Accordingly, a simply equipped WSN network was deployed and tested. The attenuation of radio wave was studied in the tests with the carrier frequencies of 433MHz and 2.4GHz in the circumstance of different combinations of impact factors including data rate, packet length, transmission distances, etc. The two RF signal strength linear models (433MHz and 2.4GHz) were built in citrus orchards with the related determination coefficients for fitting-curves ranging from 0.957031 to 0.971218 and 0.9546 to 0.9863. Signal attenuation tests showed that the CC1110 (433MHz) had a better performance in long distance communication with data rate lower than 1.2kb/s and the average received signal strength was higher than the 2.4GHz’s with the same output power. While the CC2530 (2.4GHz) provided lower packet loss rate compared with the CC1110 (433MHz) in transmitting in the same data rate. For WSN configuration, short data packet and low data rate were recommended according to the test results. A ZigBee star network was constructed and experimented with the guidance provided by signal attenuation tests. Statistics showed that the average success rate for communication was higher than 84%.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

   下载PDF阅读器