Non Intrusive Drunken Driving and Driver Drowsiness

The aim of our project is to provide a real time non-intrusive driver drowsiness detection to prevent the rapidly growing accidents caused by sleepy or drunk driver. We are going to merge the 2 requirements for safe driving in a single equipment. The car does not function unless the two conditions of safe driving are satisfied. Bio signals, such as brain waves, pulsation waves, and heart beat are different between people who have and have not consumed alcohol. Similarly it is different for those who are brisk and those who are sleepy or suffer with fatigue. Currently, we are developing a non-invasive system to detect individuals driving under the influence of alcohol and fatigue by measuring bio signals. Two non-intrusive ECG measurement methods are developed for vehicle drivers, which will be used for drive drowsiness and fatigue detection. In the first method, each half of the steering wheel is wrapped with conductive fabric as electrode and is isolated from the other. In the second method, two pieces of conductive fabric with the same dimension are placed on the driver seat’s backrest as electrodes. Signal conditioning circuit and impedance matching circuit are specifically designed for each method. Results also show a change in the driver’s heart rate variability (HRV) with fatigue/drowsiness. And this system is non intrusive, that is it does not cause any disturbance to the driver.