Research On Greenhouse Monitoring System Based On NB-IoT

In view of some problems existing in the regulation,control and management technology of environmental factors of facility greenhouses in China,the research content of this paper is to realize the perception of environmental factor information of facility greenhouses by using wireless sensor network technology,Internet of things technology,short-range wireless transmission technology,cloud service and other technologies,and complete the stable transmission,storage and display after information collection.The facility greenhouse environmental monitoring system designed in this paper can basically realize the collection,monitoring and control of environmental factors,and monitor environmental parameters in real time through the web visual monitoring interface management platform,so that users can see the changes of environmental factors more intuitively and conveniently.It is transmitted to the Internet of things platform through the wireless communication module,and the advantages of large connection and unified management of the cloud platform are used to realize the real-time monitoring and control of various environmental parameters of facility agricultural ecology.Firstly,it analyzes the growth needs of plants in the facility greenhouse and the feasibility of the implementation technology,analyzes the cloud platform technology of the Internet of things,analyzes the three-tier architecture of the Internet of things layer by layer,and puts forward a four tier Internet of things monitoring architecture suitable for the current Internet of things terminals;The hierarchical model and logical architecture of the Internet of things cloud platform are analyzed in detail,and the overall architecture design based on the cloud platform is proposed according to the functional requirements of the system;Then,by comparing various communication modes,NB-IOT is selected as the communication mode of the system according to the advantage analysis,and mqtt protocol is used as the data communication protocol between NB-IOT and cloud platform to realize the software design of NB-IOT communication task,data acquisition task,data storage task,equipment execution task,historical data query task and so on;Finally,taking a facility greenhouse as the application scenario,through the terminal hardware and software program design,communication design,cloud platform configuration,relevant cloud services and database construction and design of the system,a man-machine interaction platform of the facility greenhouse environmental monitoring system is built to realize the functions of equipment management,data storage,real-time monitoring,historical data chart display,remote control and so on;The results show that the overall structure design of the system is completed based on Nb IOT and Internet of things cloud platform,which modularizes the overall structure of the system and significantly improves the reliability,practicability and stability of the system.