Alcohol Detection System

Alcohol detection with an engine lock system using Arduino is designed to prevent drunk driving incidents by integrating a breathalyzer into a vehicle's ignition system. The system utilizes an Arduino microcontroller, an alcohol sensor module, and a relay to control the engine's ignition.

The alcohol sensor module is responsible for detecting the presence of alcohol in the driver's breath. It typically employs a gas sensor that measures the concentration of alcohol vapor. When the driver exhales into the sensor, it detects the alcohol level and sends a signal to the Arduino.

The Arduino acts as the control center of the system. It receives the signal from the alcohol sensor module and processes it. If the alcohol concentration exceeds a predetermined threshold (usually the legal limit), the Arduino triggers the relay.

The relay is connected to the vehicle's ignition system. When the Arduino activates the relay, it interrupts the power supply to the ignition, effectively preventing the engine from starting. This ensures that the vehicle cannot be driven by an intoxicated individual.

Additionally, the system may include a display or indicator to inform the driver about the alcohol detection status. It can provide visual or audio cues to indicate whether the system is locked or unlocked.

Overall, the alcohol detection with engine lock system using Arduino combines the breathalyzer technology with the vehicle's ignition system to enhance road safety and reduce the risks associated with drunk driving.