System to aid navigation: sideways movement detection

After a long journey by car, due to fatigue, the positioning by the driver on the road leaves much to be desired. It is not uncommon to be too much to the right or left. The authors present the theory of a brightness and contrast detector, a device to aid navigation which warns the driver by means of a light and an audible signal. The proposed system is an assistant to the driver which keeps the driver awake when he is just about to fall asleep. The system detects if the vehicle´s wheels go beyond a demarcatian line of the route with respect to the vehicle on the route, and start the wake up alarm. Due to an intelligent microcontroller module, the system the permits a filtering of false alarms when the driver signals for a significant change in the direction of the route