Attention assistant
As Attention Assist , a drowsiness detection to be motor vehicles referred to, which is to help accidents caused by sleepy drivers expectant and dangerous micro-sleep to avoid. The system is often referred to as a drowsiness warning. Like all such support systems, it is no substitute for responsible behavior.
functionality
In order to prevent accidents, the system must be able to detect declining concentration, which can lead to dangerous microsleep, early enough. The assessment of the driver's wakefulness must also remain within an acceptable framework, i.e. it must not involve any special effort and must not be disturbed by false alarms.
The driver's level of alertness should be determined directly at the first approaches to development. For this purpose, cabling was created or special glasses were worn in which sensors monitored eye activity. In other approaches, head tilt was monitored. The results were not convincing.
In the current systems different approaches are pursued, in which indirect conclusions are drawn from operating processes about drowsiness. What they have in common is that conclusions from measurements lead to the output of graduated acoustic, optical or haptic signals and the display of corresponding messages, whereby providers describe these messages as "gentle", since frightening a person who has just fallen asleep leads to unwanted, violent reactions could.
One approach consists in monitoring compliance with the lane between the lane markings by evaluating images from a video camera. Such markings are present in particular on better-developed roads, and this type of accident occurs more frequently on such routes. It is based on the idea that drivers who get sleepy begin to oscillate between the markings barely noticeably at first.
Another approach consists in the ongoing, sensitive monitoring of the steering movements, which change quite early when people become sleepy. They make minor steering errors that are often corrected quickly and abruptly. Based on these quick corrections, the system calculates a degree of drowsiness in connection with the blinking behavior, the time of day and the speed of the vehicle.
See also
Individual evidence
- ^ Ford - Driver Alert. (No longer available online.) Formerly in the original ; accessed on February 16, 2013 . ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ Euro NCAP Advanced Rewards - Attention Assist - Ford Driver Alert 2011 | Euro NCAP. Retrieved on August 14, 2019 .
- ^ Ford Driver Alert. Retrieved August 14, 2019 .
- ↑ Mercedes - Attention Assist. (No longer available online.) Archived from the original on March 4, 2016 ; Retrieved February 16, 2013 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ http://bester-beifahrer.de/ - a campaign by the German Road Safety Council on driver assistance systems
