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Wireless Sensor Network Node Localization Monitoring System Design For Precision Agriculture

Posted on:2017-02-20Degree:MasterType:Thesis
Country:ChinaCandidate:L Y ZhangFull Text:PDF
GTID:2348330485453252Subject:Agricultural Electrification and Automation
Abstract/Summary:PDF Full Text Request
Precision agriculture is the new trend of agricultural development,it is an important way to achieve high-quality low-efficient agriculture. In the development of precision agriculture, environmental suitability is an important criterion for the healthy growth of the crop. Factors affecting crop growth is mainly temperature, humidity and soil moisture, etc., it is very important to obtain information quickly and accurately on crop growth environment and understand the realtime environment for the growth of crops. For sampling rate of environmental monitoring of the presence of traditional, low-productivity and wiring inconvenience and other shortcomings, this article is designed Zig Bee wireless sensor network node localization monitoring system for the collection, processing, transmission and storage of field crops growing environmental information for a detailed analysis and design. Zig Bee wireless sensor technology are widely used for its low power consumption and ad hoc network, equipment layout flexibility and good stable performance, etc. Wireless sensor network consists of a large number of sensor nodes from networking configuration, capable of real-time information collection, data communications and processing, it is widely used in medical, military and environmental monitoring. With the rapid development of precision agriculture, application of wireless sensor networks has become a necessary means to collect field information, improve management, increase crop yield.In the application process agricultural wireless sensor networks to measure pe rception, the sensor node localization is an important part, a large number of nodes must determine the location information in order to carry out effective monitoring of the environmental information. Therefore, we must take certain methods to determine the location of the monitoring node in the network, and then get the actual geographical information. This paper presents an optimization algorithm based on RSSI ranging localization Improved Particle Swarm. In this paper, a method is used to calculate RSSI ranging unknown nodes and beacon nodes of distance, and the introduction of mixed mutation strategy in particle swarm algorithm search process, broaden your search and improve the diversity of the population, to ensure the ability to explore global algori thm, is conducive to the most out of local optimal solution, to effectively improve the evolution of performance and positioning accuracy.Precision agriculture monitoring wireless sensor network node localization system utilizes Zig Bee technology for monitoring temperature, humidity and soil moisture. The main course was sent by the terminal node to node network coordination request signal, to join the network coordinator node after receiving the consent of signals, and collected data to the coordinator no de. Coordinator node occupy a pivotal position in the network, the coordinator node to transfer data to the host computer monitoring center, and finally display the data in the PC monitor interface, users can query data. The whole network system programming uses C# language. The final actual field tests shows that the design of the monitoring system meets the precise measurement.
Keywords/Search Tags:Node localization, Precision agriculture, Temperature and Humidity, Data collection
PDF Full Text Request
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