Design And Research Of Irrigation Control System Based On Grey Theory And Embedded Technology

Water-saving irrigation water in precision control,irrigation amount of fertilizer not only improve resource utilization,reduce damage to the land of fertilizer.Therefore,Efficient water and fertilizer input is the urgent need to solve the problem of agricultural irrigation at present.Research Status and Technical Level of Irrigation Control Technology in Greenhouse,the greenhouse control system based on Gray Theory and Embedded technology is designed and developed.The main research contents are as follows:First,In order to meet the practical application of greenhouses in China at this stage,As well as the characteristics of control and implementation of modern Greenhouse in China,for the control process more intelligent,informative and accurate,the overall structure of greenhouse irrigation control system was designed.Second,The gray prediction fuzzy PID control model is established by using the irrigation water in the greenhouse as the control object,and the Simulink module in the MATLAB software is used to analyze the fuzzy control system,which is based on the gray prediction theory,the fuzzy control method and the PID application characteristics.Perform mathematical model in gand simulation.And the gray prediction fuzzy PID mathematical model is programmed,and the control program is embedded into the STM32 controller in combination with the embedded technology,and the water and fertilizer ratio control platform is set up.Thirdly,in order to meet the monitoring of many control objects and environmental factors in the greenhouse,the STM32 controller is used as the core controller of the subject system,and the peripheral control circuit of the system is designed.The ?C/OS-? real-time operating system calls each sub-task,and according to the priority level preemptive task allocation.Using human-computer interaction interface design and development.And according to the actual needs of the design and design of a variety of mobile sensors,to achieve environmental factors inside and outside the greenhouse,and a variety of crop growth parameters for real-time monitoring.Fourthly,in order to realize the function of remote control in the greenhouse,in order to further get rid of the limitation of water and fertilizer irrigation control,this paper develops the remote control application of Android mobile phone based on GPRS technology to realize remote irrigation control and data query.Through the.NET Framework development platform,the server side of greenhouse irrigation control system was programmed.At last,After a lot of experiments,the greenhouse irrigation control system based on gray theory and embedded technology has been put into practical application in Urumqi County.The operation results show that the system is simple and functional,and has high promotion value.