Bac Based Alcohol Detection System
DOI:
https://doi.org/10.15662/IJEETR.2026.0802133Keywords:
Blood Alcohol Concentration (BAC), alcohol detection system, breath analyzer, ethanol sensor, MQ-3 sensor, gas sensor, alcohol sensing module, embedded system, microcontrollerAbstract
Road accidents caused by drunk driving remain a significant global concern. This paper proposes a smart alcohol detection system designed to prevent such incidents by monitoring the driver's alcohol level and taking necessary actions to ensure road safety. The system employs an alcohol sensor (MQ3) to detect alcohol concentration in the driver's breath. If the detected level exceeds a predefined threshold, the system triggers alerts using a buzzer and LED indicators and can take preventive actions such as disabling the vehicle’s ignition.
The system is built using an ESP8266 microcontroller and integrates Internet of Things (IoT) technology to enable real-time monitoring and data transmission. By implementing this system in vehicles, we aim to reduce the risk of accidents caused by impaired driving and contribute to safer roads.
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