SYSTEM UND VERFAHREN ZUR ÜBERWACHUNG DES WACHSAMKEITSZUSTANDS DES FAHRERS EINES FAHRZEUGS

A system for monitoring the state of vigilance of the driver (D) of a vehicle (V) which is following a general direction of travel, and its method of operation are disclosed. The system comprises sensors (10) adapted to detect the evolution over time of the steering angle of the vehicle and a processing unit (20) arranged for filtering the acquired steering angle signal (S steer ) so as to obtain a signal (S corr ) indicating the corrective steering manoeuvres with respect to the general direction of travel followed, eliminating therefrom the steering contributions due to following a general direction of travel that are estimated on the basis of cartographic data indicating the road route followed by the vehicle (V).