Method and sensor arrangement for non-contact width monitoring in vehicle treatment systems

摘要

The present disclosure relates to a vehicle treatment system (2) in which at least one treatment device (4), in particular a washing portal, and a vehicle to be treated are moved relative to one another, with a collision detection device (6) for monitoring the width of a maximum treatment area (B) of the vehicle treatment system ( 2) which, for monitoring a lateral limit of the maximum treatment area (B), outputs at least one first optical sensor (8), which is operated at a predetermined sampling frequency and outputs either a covered event or a non-covered event for each sampling cycle, and one Control unit (10) for evaluating the output values of the first optical sensor (8). The detection range of the first optical sensor (8) is along a lateral boundary of the maximum treatment area (B) of the vehicle treatment system (2) and the treatment device (4) in the latter Direction of travel by a predetermined e Distance (S1) aligned ahead. The control unit (10) is set in such a way that it detects an impending collision when a predetermined number of consecutive cycles is scanned with a covered event.