Strawberry Greenhouse Control System Based On STM32

With the IOT technology penetrated into many areas of the society,modern agriculture based on Internet of Things is becoming more and more technology-oriented,convenient and efficient.The rapid development of agricultural Io T technology not only promotes the transformation of traditional agriculture to smart agriculture and intelligent production,but also further improves the overall efficiency of modern agricultural development.The thesis compares and analyzes the current development of intelligent agriculture in domestic and foreign countries,design and development of a set of greenhouse strawberry control system based on STM32controller and Android mobile client,combined with the growth habit of designated greenhouse crops-strawberries,The system is based on sensors,equipped with 3G network technology,information processing platform and mobile phone Android client to build agricultural Internet of things architecture.A strawberry intelligent greenhouse system with data collection,dynamic control of greenhouse environment and remote control functions was designed.The system can monitor the strawberry greenhouse's environmental parameters and remotely control greenhouse equipment in real time.At the same time,the addition of plant growth parameter expansion interfaces within the system can be applied flexibly to the greenhouse intelligent control of various plants.Strawberry greenhouse control system using Internet of Things related technologies,Arrangement of sensors,controllers,communication modules and other necessary electronic components in the strawberry greenhouse to achieve accurate collection of greenhouse environmental parameters and build information transmission channels;Using Java language to develop Android mobile client in AndroidStudio environment.The client has achieved the function of register,login,change passwords,real-time display of greenhouse environmental parameters,history curve,remote control and video monitoring functions.Using Tomcat+MySQL to build a server,real-time storage of greenhouse growth environment data,user data and other data,easy for users to query through the mobile phone client anytime,anywhere.Greenhouse environment is a complex system with multiple factors strongly coupled with multiple inputs and outputs,The key problem of greenhouse environmental control is the establishment of environmental dynamic mathematical model and powerful control and optimization algorithm.This paper applies the variation policy set based on mixed strategy to the NSGA-II framework,combined with local search strategy,with non dominated sorting evolutionary algorithm based on hybrid strategy MNSEA-II as the optimization algorithm of PID controller.Three PID parameters are taken as individuals in MNSEA-II,taking J₁ and J₂ as optimization targets,dynamically adjust PID parameters and conduct online optimization.Finally,The Pareto optimal solution set with more diversity and uniformity performance is sought,so that the system can obtain good control performance.This article first describes the background and development status of research related to agricultural internet of things.Secondly,it analyzes the comprehensive theoretical knowledge and key technologies,summarizes the overall system design,and determines the functional design of each module.Thirdly,The Socket communication protocol was used to realize the information transmission between the controller,server and mobile client.Finally,the hardware and software debugging of the whole control system,operation and application.The test results show:strawberry greenhouse intelligent control system in user module,video monitoring module,environmental parameters detection and dynamic adjustment module and remote intelligent control functions under the normal and stable operation,achieved the desired effect.