International Journal of Engineering and Information Systems (IJEAIS)

Title: Iot Based Alcohol Detection System

Authors: Khamis Ally, Festo Mfyagisa, Juma Lameck

Volume: 9

Issue: 7

Pages: 56-58

Publication Date: 2025/07/28

Abstract:
This paper presents the development and implementation of an IoT-based alcohol detection and alert system intended for road safety enhancement. The system uses a semiconductor-based alcohol sensor to detect the concentration of alcohol in the ambient air and compares it against a defined safety threshold. The device utilizes an Arduino Uno microcontroller for sensor reading and decision logic, an LCD module for real-time display, and a SIM800 GSM module to send alert messages via SMS. When alcohol is detected beyond the threshold, the system notifies a predefined contact. The system minimizes energy usage by sending alerts only when a change in status is detected. The results show the system's effectiveness in detecting alcohol in real-time and issuing timely alerts.

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