Research And Design Of Smart Photovoltaic Greenhouse System In Guangxi

Agriculture is the foundation of the country.Only when it develops and stabilizes the country will it be peaceful.The issue of "agriculture,rural areas and farmers" is still the top priority of our country’s work.At present,our country’s agricultural development is facing constraints such as resource shortages,insufficient agricultural labor and environmental pollution.It is difficult to meet the food needs of many domestic people,urgent to rely on modern technologies,such as information technology and energy technology,to promote agricultural transformation and upgrading to improve existing constraints.so that agriculture will develop in the direction of green,sustainable,high-yield,high-efficiency,high-quality modernization.Therefore,this paper aims at the existing problems of high monitoring cost,unstable transmission,scattered management,and high energy consumption of large greenhouses,and research and design a smart photovoltaic greenhouse system using Internet of Things technology,photovoltaic power generation technology,control strategy,cloud technology and Web technology.This article analyzes the needs of monitoring systems,photovoltaic systems and greenhouse production in three dimensions,focusing on the research of greenhouse photovoltaic system application schemes and the design of environmental monitoring systems.Photovoltaic application research took the climate characteristics of Nanning,Guangxi as an example,and determined an independent photovoltaic-mains complementary power supply plan;according to the summer power consumption of the greenhouse,photovoltaic modules and batteries were selected and capacity configured.In order to obtain the maximum power generation of the configured photovoltaic system,Ecotect and PVsyst are used to calculate the azimuth and tilt angle of the maximum annual radiation,and the best azimuth angle is true south,and the best tilt angle range is 18-19°.The smart photovoltaic greenhouse monitoring system adopts Lo Ra and NB-Io T heterogeneous networking to construct a communication scheme,and performs hardware selection,circuit design and software design for sensor modules,relay modules,main control chip modules,Lo Ra and NB-Io T transmission modules.Realize the collection,control and transmission of environmental data.The control strategy is RBF-PID,and the control effect of RBF-PID and traditional PID on greenhouse air temperature is analyzed in MATLAB.The control accuracy,convergence speed and robustness of RBF-PID are better than traditional PID,which provides a theoretical basis for subsequent applications.The client is built by Alibaba Cloud Server(ECS),the Java-Web environment is configured in the cloud,and the lightweight application Tomcat is selected as the Web server.The Web client is developed using B/S architecture,MVC mode and SSH2 integration framework,and combined with AJAX and JXL/JFreechart enhances user experience.Greenhouse environment data is transmitted to NB-Io T via Lo Ra selforganizing network,and sent to ECS via TCP protocol.Administrators can access the web client through a browser to realize real-time monitoring and remote control of the environment.Finally,the checkerboard and compact photovoltaic greenhouses are analyzed in Ecotect.The test shows that the checkerboard photovoltaic has better and more uniform lighting,and the compact thermal insulation is good.Suitable crops can be selected according to the lighting characteristics of the photovoltaic greenhouse.Provide reference ideas for the layout and optimization of planting space;use PVsyst to predict the power generation of the photovoltaic system,and the results show that the designed photovoltaic system has good performance and can meet 90.7% of the electricity demand of the greenhouse;for monitoring system networking,monitoring,control and Web customers End-to-end testing,the results show that the system is stable and reliable,and basically completes the expected goals.