Drunk Driving Prevention with Engine Lock

Description:

The “Drunk Driving Prevention with Engine Lock” is an innovative working model for students that demonstrates how alcohol detection technology can be used to prevent drunk driving by automatically disabling a vehicle’s engine if alcohol is detected in the driver’s breath. This project simulates a real-world breathalyzer-based safety system integrated with an engine lock mechanism.

The model is built on a 40 × 50 cm Foam Board or Sun Board base, representing a vehicle control system. The alcohol sensor detects the presence of alcohol in the driver’s breath and sends signals to the Arduino Uno microcontroller. If alcohol is detected beyond a safe limit, the system activates a buzzer and LED warning while displaying an alert message on the 16×2 LCD module with I2C. At the same time, the system triggers the engine lock mechanism, preventing the vehicle from starting.

The power distribution board ensures efficient power management, while the 2-pin push button serves as a manual ignition switch. The model includes BO wheels and a DVD motor to simulate vehicle movement, which stops if alcohol is detected. A toy fan represents engine cooling, while resistors, jumper wires, and LEDs provide additional circuit functionality.

This project provides students with hands-on learning in automation, Arduino programming, and vehicle safety systems, showcasing how technology can be used to enhance road safety and prevent accidents caused by drunk driving.