A DEVICE FOR PAINTING A LINE MARKING ON A ROADWAY

摘要

A device for painting a line marking on a roadway (4) by using a painting unit (10) which is carried on a vehicle (1). The device comprises, on the one hand, a TV camera (3) pointing in the direction of travel of the vehicle and, on the other hand, a screen (6), and also a computer (5) for reproducing on the screen the TV camera image of the edges (12, 13) of the roadway. The computer (5) generates two reference lines (7, 8) whose position and shape can be altered by means of a joystick (9), in such a way that they can be made to lie symmetrically relative to the TV camera image of the edges (12, 13) of the roadway, the computer being designed to detect the position and shape of the reference lines and from these to determine the position of the centre of the roadway in relation to the longitudinal axis of the vehicle, and the painting unit (10) being displaceable in the lateral direction as a function of the determination by the computer (5) of the centre of the roadway.