Research And Development Of Greenhouse Intelligent Irrigation System Based On Cloud Platform

China has been a large agricultural country since ancient times,and agriculture is also an important guarantee for the stable development of our society.However,with the development of economy,the contradiction between the scarcity of fresh water resources and the huge demand for traditional agricultural water,and the contradiction between the demand for intelligent greenhouse irrigation management and the backward irrigation management technology are increasingly prominent.With th e development of agricultural modernization,these problems have become our country urgent problems in agricultural development.Therefore,in order to enhance the level of agriculture,increase the efficiency of agricultural production,and promote the economic growth of agriculture,this paper focuses on a series of issues such as collection,transmission,processing,decision-making,control in greenhouse irrigation system.Based on wireless sensor network technology,cloud platform technology and web technology,research and develop greenhouse intelligent irrigation system and information management platform which are easy to build,popularize and expand.This paper focuses on the following points:(1)Researched on the intelligent irrigation decision of the system.Based on the analysis of the characteristics of the intelligent irrigation system and considering the characteristics of large inertia,lag and non-linearity in greenhouse irrigation,the intelligent irrigation fuzzy controller based on fuzzy inference is studied and designed.At the same time,considering the subjectivity and randomness in the design of fuzzy controller,GA is used to optimize the membership function and control rules to realize the optimization of fuzzy controller,so that it can be better applied to those crops without good theoretical induction and experience summary.(2)In order to meet the needs of infrastructure construction for timely and appropriate irrigation of crops and environmental parameter collection in the syste m,a wireless sensor network on the greenhouse site is constructed by adopting the "Lo Ra + GPRS" communication technology scheme,and the software and hardware of data collection node,valve control node and gateway node in the network system are designed respectively.(3)Build data center and service center of greenhouse irrigation system based on Alibaba cloud server.Researched on data information relation of system based on database relation model,and constructed the relational data table in the Microsoft SQL Server database management system.It not only enhances the efficiency of data utilization,but also reduces the redundancy of data storage.In addition,the server application program is developed by C# language to realize the tasks of communication management,data analysis and processing,irrigation decision control,etc.(4)In order to enable users supervise the greenhouse anytime and anywhere.Under the development platform of visual studio 2015,developed the web application of remote irrigation and information management with B/S structure based on asp.net technology.The application combines table,image,curve and other multiple elements to achieve a good interaction between people and the system,and provides users with real-time monitoring,irrigation control,data analysis and system information management functions.(5)Finally,the system is tested in many ways,including communication test,software release and access test,and comprehensive irrigation test.The test results show that the system design is feasible,runs well,and basically achieves the expected goal.