Research On Agricultural Wireless Intelligent Gateway Based On Topology Visualization Centralized Control

As a large agricultural country with limited agricultural resources,research to improve the productivity of farmland,economic and environmental benefits by using advanced science and technology has great significance of China's agricultural development.Currently,agricultural Internet of things is a hot topic in the research of China's agricultural information technology.In the production and management of facility agriculture,the wireless sensor network(WSN)of agricultural Internet of things has many outstanding technical advantages,such as convenient,flexible,adaptable,easy to deploy,wide monitoring range,ad hoc network and low power consumption.WSN can complete the temperature and humidity,light,C02,soil temperature and humidity data acquisition,and adjust the environment through environmental control equipment,to achieve the purpose of precise control the production process,so as to improve the efficiency of crop production and agricultural product competitiveness.Wireless sensor network technology has been widely used in the production management of facility agriculture.However,the existing systems are mostly focus on the sensor and control end node of WSN.That means most systems are blind topology(topology is not visible)or simple topology(topology is read-only and cannot be operated),sensing and control cannot be operated in the topology.And they do not notice the visual operation value of the wireless sensor network topology.In the field of agricultural application,visual operation of real-time dynamic topology based on WSN can provide the user with more details of the work,more accurate operation,more rapid and accurate system fault diagnosis.This has great significance to further improve the efficiency of agricultural production and operation.With gateway and node in WSN as studying object,this paper mainly focuses on the research of the technology based on visual operation.Firstly,by analyzing the information of the ZIGBEE topology structure,this paper gets the network information of the nodes,and then constructs data structure which can describe the network topology.Meanwhile,it studies streamlined storage and fast topology reconfiguration algorithms,and ultimately realizes the dynamic graphical display of the wireless sensor network topology on the gateway.Secondly,it provides a more detailed design scheme of node data communication format to make the gateway identify the type and number of each node,and then constructs a series of components can be automatically matched with the sensor node and control node.Finally,it establishes a remote data service with database mapping mechanism on Ali cloud platform and completes the database design.The database mapping mechanism can be configured to map remote data and is convenient to customer use.Also on Ali cloud platform,it builds web server which can provide the function of remote data query and analysis.Based on topology visualization centralized control in agricultural wireless networks,the research of intelligent gateway in this paper has a graphical interface,a variety of types of communication interface,as well as the data mapping mechanism and cloud platform access query,and so on.