Driver Soberness System for road vehicles

This project entitled “Driver Soberness System for road vehicles” is a safety system. The basic idea behind this system is to prevent and person under influence of alcohol to start and drive any road vehicle. The system takes power form the vehicles existing battery and is switched on as the key of the vehicle is set to ON position. The system then waits for a sample of breath as an input and then analyzes it for traces of alcohol using -OH and pressure sensors. If any trace of alcohol is found, the ignition relay is then kept OFF and the vehicle will not start even if the key is turned to ignition state. This allows the system to behave as an ignition lock device. Driver soberness system also measures the speed of the vehicle using a hall-effect sensor in running state along with the tilt in the steering wheel with the help of GY-61 acceleration sensor. If the set limit is exceeded the system then alerts the driver with a warning signal via a glowing LED and a buzzer indicating a case of rash driving.