Connectivity of wireless sensor networks for plant growth in greenhouse

作     者：Chen Yang Shi Yuling Wang Zhongyi Huang Lan 

作者机构：College of Information and Electrical EngineeringChina Agricultural UniversityBeijing 100083China Modern Precision Agriculture System Integration Research Key Laboratory of Ministry of EducationBeijing 100083China Key Laboratory of Agricultural information acquisition technology(Beijing)Ministry of AgricultureBeijing 100083China 

出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报（英文）)

年 卷 期：2016年第9卷第1期

页      面：89-98页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 0828[工学-农业工程] 08[工学] 

基　　金：National "863 Project" of China [2008AA10Z201] Specialized Research Fund for the Doctoral Program of Higher Education 

主　　题：wireless sensor network network connectivity long-distance route nodes received signal strength indication(RSSI) greenhouse 

摘      要：Wireless sensor networks have been applied in farmland and ***,poor connectivity always results in a lot of nodes isolation in the network in a *** this reason,the network connectivity is worth considering to improve its quality,especially when the collected data cannot be sent to the data center because of the obstacles such as the growth of crop plants and ***,how to reduce the effect of crop growth on network connectivity,and enable the reliable transmission of field information,are the key problems to be *** solve these problems,the method which adds long distance routing nodes to the WSN to reduce the deterioration of WSN connectivity during the growth of plants was *** verify this method,the network connectivity of the deployed WSN was represented by the rank of connection matrix based on the graph ***,the rank with value of 1 indicates a fully connected ***,the smaller value of rank means the better *** addition,the network simulator NS2 simulation results showed that the addition of long-distance backup routing nodes can improve the network ***,in experiments,using ZigBee-based wireless sensor network,a remote monitoring system in greenhouse was established,which can obtain environmental information for crops,***,humidity,light intensity and other environmental parameters as well as the wireless link quality *** results showed adding of long-distance backup routing nodes can guarantee network connectivity in the region where received signal strength indication(RSSI)was poor,*** value was less than−100 dBm,and the energy was *** conclusion,this method was essential to improve the connectivity of WSN,and the optimized method still needs further research.