Driver drowsiness detection

As Attention Assist drowsiness detection system in a motor vehicle is called, which should help to avoid accidents caused by drowsy drivers expectant and dangerous micro-sleep. Like all such supporting systems do not replace responsible behavior.

Operation

To prevent accidents, the system must upcoming fall asleep early enough to recognize them. The assessment of driver's arousal state must also remain in an acceptable framework for it, so do not constitute a special effort and not disturbed by false alarms.

In initial stages of development, the degree of alertness of the driver should be determined directly. These cabling has been created or supported through special glasses, the sensors monitored the eye activity. In other approaches, the head tilt was monitored. The results were not convincing.

In the current systems, different approaches are used, in which indirectly will be closed from operations on the drowsiness. Commonality is that inferences from measurements lead to the issue of graded acoustic signals and display appropriate messages, where vendors describe these messages as " gentle " as a frightening one just falling asleep unwanted, violent results could lead to.

One approach is to monitor compliance with the track between the lane markings by evaluating images from a video camera. Such markings are especially present on better -maintained roads, this type of accident occurs just heaped on such routes. It is based on the consideration that schläfig expectant riders start at first almost imperceptibly to commute between the marks.

Another approach is the ongoing, sensitive monitoring of the steering movements, as these in sleepy persons will change quite early. They make minor steering errors that are often corrected quickly and abruptly.