Smart Helmet with Alcohol Detection, Accident Monitoring, GSM/SMS Alert Automatic Engine Lock System

Smart Helmet with Alcohol Detection, Accident Monitoring, GSM/SMS Alert Automatic Engine Lock System

Project Overview

An advanced IoT-based safety helmet designed for riders. The system detects alcohol consumption, monitors accidents, sends emergency SMS alerts, tracks location, and prevents vehicle operation when unsafe conditions are detected.

Key Features

• 🍺 Alcohol Detection System
  MQ-series alcohol sensor detects alcohol levels near the rider. Prevents engine start if alcohol is detected.
• 🚨 Accident Detection & Monitoring
  Accelerometer and gyroscope detect sudden impact or fall. Automatically triggers emergency response.
• 📍 GPS Tracking
  Captures live rider location and sends accident coordinates through SMS.
• 📲 GSM SMS Alert System
  Sends emergency messages to family/emergency contacts with accident status and location.
• 🔒 Automatic Engine Lock
  Relay module disables vehicle ignition during unsafe conditions.
• 🤖 IoT Monitoring
  ESP32/Arduino controller with cloud dashboard for real-time monitoring.

Hardware Components

Component	Description	Purpose
ESP32 / Arduino	Microcontroller board with GPIO pins and communication interfaces	Controls sensors, processes data and manages alerts
MQ-3 Alcohol Sensor	Gas sensor used for alcohol vapor detection	Detects alcohol consumption and prevents engine start
MPU6050 Accelerometer + Gyroscope	6-axis motion sensor	Detects crash impact, fall and abnormal movement
GPS Module (NEO-6M)	Satellite location tracking module	Provides accident location coordinates
GSM Module (SIM800L)	Cellular communication module	Sends emergency SMS alerts
Relay Module	Electronic switching device	Controls vehicle ignition lock
Buzzer & LED	Audio and visual indicators	Provides warning signals
Helmet + Vehicle Ignition Interface	Helmet safety connection system	Integrates helmet with bike ignition

Working Flow

Helmet Worn ⬇
Alcohol Check ⬇
Rider Approved ⬇
Engine Unlock ⬇
Accident Monitoring ⬇
Crash Detected ⬇
GPS Location Capture ⬇
GSM SMS Alert ⬇
Emergency Notification

System Block Flow

MQ-3 Alcohol Sensor ⬇
ESP32 Controller ⬇
Alcohol Decision → Relay Engine Lock

MPU6050 Sensor ⬇
Accident Detection ⬇
GPS Location Capture ⬇
SIM800L GSM Module ⬇
SMS Alert to Emergency Contact

Additional Modules (Optional Upgrade)

• IoT Dashboard (ThingSpeak / Blynk)
• AI Accident Prediction
• Mobile App Monitoring
• Voice Emergency Alerts
• Camera Based Rider Monitoring (ESP32-CAM)

Suitable For

Smart Transportation | Road Safety | IoT Projects | AI Safety Systems | Engineering Final Year Projects