Intelligent Irrigation Control System Based on ARM

Taking the intelligent,automatic,accurate irrigation and fertilizer control as study object,this paper introduces the configuration,working principles and function of intelligent irrigation.The hardware structure,configuration,and signal detection and treatment of the control system based on ARM are described.The software development is presented after the hardware platform has been constructed.First,the software development environment is established,Boot Loader and embedded operating system μClinux are transplanted to the aim board.Second,the system application programs including main control program,user operation interface program,keyboard program and S3C44B0X related function module driving program are described.Last,the closed loop control of the EC ion density of fertilizer is implemented using PID and Smith Forecast Method.The experimental result shows that the control error of the EC ion density is 0.01 and the adjusting time is less than 200 s.Compared with tradition irrigation,the intelligent,automatic,accurate irrigation and fertilization control are achieved,and water and fertilizer are saved,and labor productivity is greatly increased.