Driver assistance system for detecting tiredness and / or assessing the attention of a vehicle driver

摘要

Driver assistance system (1) for the purpose of fatigue detection and / or assessing the attention of the vehicle driver addition to an evaluation unit (3) of at leasta) a road monitoring system (2.1, 2.2), suitable for determining the path (6),b) a speed detection system (8) and / or an interface (8.1) for receiving of already present in the vehicle (4) and the available vehicle speed information,c) an activatable warning device (5) and / or a for the activation of the available warning device (5),whereind) in the evaluation of the required distance to a reference curve (6.4) and / or to a reference mark (6.4),e) the interference limit (9) for the activation of the warning device (5),f) as a function ofi. the vehicle''s own speed of the vehicle andii. the available lane width (6.2)is varied;characterized in thatg) the function with respect to the interference limit (9) of the required distance to a reference curve (6.4) and / or to a reference mark (6.4) as a function of the velocity of the vehicle in at least one range of properties of the speed values increases linearly with increasing intrinsic speed, and the function as from a predetermined speed assumes a constant distance required and thus a further increase of the required distance is prevented.