A METHOD AND AN ARRANGEMENT FOR LOCALISING A FUELLING POINT ON A VEHICLE

A method of locating a fuelling point with the aid of an optical sensor mean s, and more particularly for locating on one side of a vehicle chassis a fuel- tank flap (12) that has inwardly thereof a fuel-tank pipe (10) for fuelling of the vehicle concerned, and therewith cause a fuelling robot (2) to open said fuel-tank flap and to dock the robot head (3) of said fuelling robot with th e fuel-tank pipe. The invention is characterised in that the area around the fuel-tank flap on said one chassis side is illuminated with light from a lig ht source (13, 14) that gives a spectral irradiance which corresponds to or is greater than the spectral irradiance of the ambient lighting; in that the optical sensor means (23) is adapted to detect light from the light source that is reflected from said chassis side; and in that a computer (29, 31) is used to detect the position of the fuel-tank flap (12) on said chassis side in relation to the position of the robot head (3). The present invention also relates to an arrangement.