METHOD OF MAINTAINING A MARKED LINE APPLIED BY A ROAD MARKING MACHINE CONSTANT AND ROAD MARKING MACHINE

摘要

The invention relates to a method for maintaining the line width (B) of a flowable, in the form of a spray fan (2) under pressure from a spray nozzle (3) of a road marking machine by means of a spray gun (1) on a road surface (4). 10) of the spray gun (1), wherein a height (H) of the spray gun (1) above the road surface (4) is adjusted in accordance with control signals obtained during operation of the road marking machine such that changes in the line width (B) of the marker line (3) be compensated.;The method according to the invention is characterized in that the marking process by means of a video camera (5) is continuously recorded as video, that by means of an image evaluation program continuously from the video recordings actual values (Bi) of the line width (B) of the generated marking line (3) are calculated in that the actual values (B _i ) of the line width (B) are compared with stored desired values (B _s ) of the line width (B), that in the case of deviations between the actual values (Bi) and the desired values (B _s ) corresponding control signals are generated and that by means of the control signals, the height (H) of the spray gun (1) over the road surface (4) is adjusted in the sense of a reduction of the deviation.;Moreover, the invention relates to a road marking machine.