System and method for detecting the fatigue of a vehicle driver

A system for exact detection of fatigue of a driver of a vehicle, comprising:

• at least one camera for sensing pupil diameter of the driver of the vehicle;
• at least one sensor for sensing a current luminance in the vehicle;
• and
• at least one computing module for detecting the fatigue of the driver of the vehicle by calculation, wherein
• the calculation is based on the sensed pupil diameter and the sensed, current luminance in the vehicle;
• and
• the detecting of the fatigue of the driver of the vehicle by the computing module comprises:
• calculation of the pupil diameter with respect to the sensed, current luminance;
• comparison of the sensed pupil diameter with the calculated pupil diameter with respect to the sensed luminance;
• and
• if the sensed pupil diameter is smaller by more than a constant range [k−0.3;
• k+1.4] of a constant k=0.6 mm than the calculated pupil diameter:
• detection of the fatigue of the driver of the vehicle;
• wherein
• the detection of the fatigue of the driver of the vehicle is correctable by a time-related correction factor with regard to a rate of reduction of the pupil diameter;
• and/or a light assist sensor.

A method for exact detection of fatigue of a driver of a vehicle, comprising the steps of:

• sensing, by at least one camera, a pupil diameter of the driver of the vehicle;
• sensing, by at least one sensor, a current luminance in the vehicle;
• and
• detecting, by calculation in a computing module, whether the driver of the vehicle is affected by fatigue, wherein
• the calculation is based on the sensed pupil diameter and the sensed, current luminance in the vehicle;
• and
• the steps of detecting the fatigue of the driver of the vehicle by the computing module comprises:
• calculating the pupil diameter with respect to the sensed, current luminance;
• comparing the sensed pupil diameter with the calculated pupil diameter with respect to the sensed luminance;
• and
• if the sensed pupil diameter is smaller by more than a constant range [k−0.3;
• k+1.4] of a constant k=0.6 mm than the calculated pupil diameter:
• detecting the fatigue of the driver of the vehicle, wherein
• the detecting of the fatigue of the driver of the vehicle is correctable by a time-related correction factor with regard to a rate of reduction of the pupil diameter;
• and/or a light assist sensor.

A system for exact detection of fatigue of a driver of a vehicle, comprising:

• at least one camera for sensing pupil diameter of the driver of the vehicle;
• at least one sensor for sensing a current luminance in the vehicle;
• and
• at least one computing module for detecting the fatigue of the driver of the vehicle by calculation, wherein
• the calculation is based on the sensed pupil diameter and the sensed, current luminance in the vehicle, and
• the computing module is further configured to convert the sensed, current luminance to a converted current luminance based on one or more of the size of a windshield of the vehicle and a distance between the driver and the windshield of the vehicle.