Abstract:
A system and method of assessing the driving task demand on the driver of a vehicle (10), and further controlling one or more devices (36) on the vehicle (10) as a function of the assessed driver demand is provided. The method includes sensing a coverage zone (14) in relation to a vehicle (10), determining a presence of one or more objects in the sensed zone (14), measuring speed (R & ) of each detected object in the sensed zone (14), determining a variation in speed of one or more sensed objects, and determining a driving task demand signal (Demand j ) indicative of driving task demand of the vehicle (10) as a function of the measured speed variability. The method controls one or more devices (36) on the vehicle (10) based on the driving task demand signal (Demand j ). Alternately, the driving task demand signal (Demand j ) is determined based on vehicle speed (V h ).
Abstract:
A technique for combining a back-up aid function with a park assist function in a motor vehicle initially includes determining a distance from a motor vehicle to an object (204). Next, a velocity of the motor vehicle (206) is determined. Then, a scaled version of the velocity and a minimum distance threshold are subtracted from the distance to provide a first multiplicand (208). Finally, a driver stimulus is provided as a function of the first multiplicand (210).
Abstract:
A low-cost system for detecting a drowsy condition of a driver (18) of a vehicle (10) includes a video imaging camera (20) located in the vehicle (10) and oriented to generate images (30) of a driver (18) of the vehicle (10). The system also includes a processor (32) for processing the images (30) acquired by the video imaging camera (20). The processor (32) monitors an eye (22) and determines whether the eye (22) is in an open position or a closed state. The processor (32) further determines a time proportion of eye closure (P T ) as the proportion of a time interval that the eye (22) is in the closed position, and determines a driver drowsiness condition when the time proportion of eye closure (P T ) exceeds a threshold value (T 1 ).