Research of automatic variable fertilization control system based on AgGPS

This system is an automatic variable fertilization control system based on the prcised location of satellite AgGPS and the technology concerned with sensing.The industry control computer reads position and speed data from the AgGPS receiver or from the speed sensor,then with the database the computer sends information to the control unit,which can output a set frequency of stepping motor's drive pulse.In this way,the fertilization can be well controlled and resources can be used and distributed in the most optimum way.