Abstract
The purpose of this study is to develop a location method for driverless tractor. The principle of measuring location is triangulation using two image sensors set at the corners of a field. A tractor equipped with a target marker was recognized by CCD camera as an image. The CCD camera rotates with a motor to pursue the movement of the target marker. This paper presents the construction of a sensor module which consists of a CCD camera, step motor and potentiometer. An experiment was performed to estimate the accuracy of the system, and the angle and location of the target marker under indoor environment were measured. The result shows that in region of 20m width and 14m length, the error of measurement is less than 8.4cm. A target pursuit system was tested, and it was judged from the data that the pursuit control system provided acceptable performance.
