An Autonomous Vehicle for Farming Using GPS

This paper presents the automatic steering control of farming vehicle using GPS receiver. Automatic steering devices for farming vehicles like tractors, seeding vehicle, weed control vehicle, spraying machine vehicle etc. have the task to relieve the driver from the physical and mental stress of monotonous steering work. Simultaneously, they are intended to help him to exploit machines and farming vehicle closer to their full performance and improve the quality of work. Vehicles frequently have to be steered in and exact straight line and along rows in the farm land.GPS receiver fetches the information of positions (latitude and longitude) of the farm land which needs to be cultivated. With the help of GPS and microcontroller (Arm9) we calculate the boundary of farm land, slope of straight line and angle of movement with the help of slope changes. The microcontroller generates the control signals to stepper motor for steering of vehicle. KeywordsAutomatic steering control, GPS receiver, Microcontroller, automatic guidance of vehicle, web camera, electronic compass, accelerometer.