You can not relax or take a nap in the autopilot. But a new generation of smart cars can measure the heartbeat and respiratory rate to detect the signs of nap. European project team A sensor system built into car seat belts and seat covers - HARKEN, which can even Sensor detect fatigue or drowsiness before obvious external expressions such as yawning or bad driving habits. This could lead to the creation of a driving warning system to help reduce the number of fatalities per year.

Changes in heart rate and respiratory rate are the best indicators of driver status, as they are related to fatigue. So when people enter into a fatigue or drowsiness state, their breathing and heart rate began to change. HARKEN can monitor these changes and warn the driver before the signs appear.

The HARKEN system consists of a car seat sensor, a seat belt and a signal processing unit for real-time processing of sensor data. Such a system can also filter out background noise such as vehicle vibration and other body movements Suction Control Valve of the driver so that it can focus on detecting heartbeat and respiration rate. The driver has started trying the HARKEN system in a closed tracking test.

Car manufacturers have begun to deploy sensor systems in high-end cars to detect fatigue driving. Some Lexus models use a camera to monitor sleepiness. Mercedes-Benz uses a steering sensor to detect unacceptable driving behavior. (Washington University engineers have recently shown that subtle signals from the steering wheel can predict that the driver has begun to sleep). BMW even considers the integration of information from Fuel Rail Pressure Sensor the blood glucose monitor or may develop a smart car that can automatically stop if a driver's heart attack is detected. (HARKEN technology may be used in the latter case).

European researchers hope that the HARKEN project can focus on a short-term listing time range so that street tests can be conducted under actual traffic conditions. Any technique that can improve the alertness Temperature Sensor of a sleepy driver may have a long way to go on the way to save lives.