Cost-effective driver drowsiness detection

Bosch has revealed that its driver drowsiness detection system, first introduced as a standard feature in 2010, in the new Volkswagen Passat is being fitted to the new Passat Alltrack. Fatigue and microsleep at the wheel are often the cause of serious accidents. However, the initial signs of fatigue can be detected before a critical situation arises, and the Bosch system can do this by monitoring steering movements and advising drivers to take a break in time. The required information is provided either by
May 2, 2012 Read time: 3 mins
311 Bosch has revealed that its driver drowsiness detection system, first introduced as a standard feature in 2010, in the new 994 Volkswagen Passat is being fitted to the new Passat Alltrack.

Fatigue and microsleep at the wheel are often the cause of serious accidents. However, the initial signs of fatigue can be detected before a critical situation arises, and the Bosch system can do this by monitoring steering movements and advising drivers to take a break in time. The required information is provided either by the car’s electric power steering system, or by the steering angle sensor, which is part of the car's ESP anti-skid system. Bosch says that the feature can therefore be installed cost-effectively and helps further increase road safety.

The influence of fatigue on accidents has been demonstrated in a number of studies. In 2010, the 1765 American Automobile Association (AAA) published an analysis based on the accident data collected by the 834 National Highway Traffic Safety Administration (NHTSA) in the United States. The assessment showed that overtired drivers were at the wheel in 17 per cent of all fatal accidents in the US.

Fading concentration and fatigue compromise the driver’s steering behaviour and response time. Fine motor skills deteriorate, and steering behaviour becomes less precise. The driver corrects small steering mistakes more often. The new driver drowsiness detection function is based on an algorithm which begins recording the driver’s steering behaviour the moment the trip begins. It then recognises changes over the course of long trips, and thus also the driver's level of fatigue. Typical signs of waning concentration are phases during which the driver is barely steering, combined with slight, yet quick and abrupt steering movements to keep the car on track. Based on the frequency of these movements and other parameters, among them the length of a trip, use of turn signals, and the time of day, the function calculates the driver's level of fatigue. If that level exceeds a certain value, an icon such as a coffee cup flashes on the instrument panel to warn drivers that they need a rest. The Bosch Driver Drowsiness
Detection function addresses an important aspect of the driver's condition, and can thus contribute to improving road safety.

Related Content

  • US university investigates smart car tyres
    January 15, 2016
    Researchers at Virginia Tech, Penn State University, and 12 industry partners are collaborating on a US$1.2 million National Science Foundation-funded project to integrate sensors into car tyres, with the aim of providing information on the vehicle’s speed and road conditions. Saied Taheri, an associate professor of mechanical engineering in Virginia Tech’s College of Engineering and the director of the Center for Tire Research (CenTiRe), is the project’s lead investigator. Taheri has been working for
    Read More
  • Low-costs solutions to improve pedestrian safety
    May 8, 2015
    David Crawford welcomes low-cost safety initiatives for pedestrians in America. Some 10 people die each week in accidents on crosswalks in the US, that’s more than 10% of all pedestrian fatalities in road traffic incidents - the number of which is running at a five-year high. Ensuring crosswalks are safe is key in supporting the growing enthusiasm for walking as a travel mode. In the last decade of the 20th century, numbers walking to work in the US fell by 26%; while, as recently as 2012, Americans were e
    Read More
  • NHTSA to add automatic braking systems vehicle safety features
    January 23, 2015
    US Transportation Secretary Anthony Foxx has announced that the National Highway Traffic Safety Administration plans to add two cutting-edge automatic emergency braking systems to the recommended advanced safety features included under its New Car Assessment Program (NCAP) – the latest step in a half-century of safety innovations that have saved more than 600,000 lives, according to new NHTSA research. The agency plans to continue to encourage development and commercialization of additional promising saf
    Read More
  • Affectiva and Nuance to develop humanised automotive assistant
    September 7, 2018
    US company Affectiva plans to develop a joint automotive assistant which detects driver distraction and drowsiness and voices recommendations such as navigating to a coffee shop. The solution is intended to align its dialogue to a motorist’s emotional state based on facial and verbal expressions. The integrated solution will combine the Affectiva Automotive AI solution with UK-based Nuance Communications’ Dragon Drive platform. Affectiva Automotive AI measures facial expressions and emotions such as anger
    Read More

Highlighted Content