🚨 Accident Detection and Alert System for Bikes and Cars

Last semester, I developed an Accident Detection and Alert System as part of my Computer Interfacing Project. This Arduino-based system is designed to detect vehicle accidents using motion and orientation sensors, and instantly send emergency alerts—including the exact GPS location—via SMS and call.

The system is packed with safety features such as automated emergency notifications, local alerts, and smartphone control via Bluetooth. It provides a real-time, reliable solution to enhance road safety for bikes and cars.

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📸 Project Preview

Complete accident detection system with sensors, GPS, GSM, and alert mechanisms

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💡 How It Works

The system continuously monitors vehicle orientation and acceleration. If it detects a crash, it triggers:

• Local alerts using a buzzer, laser, and servo motor (vehicle lock simulation)
• Remote alerts by sending SMS with a Google Maps location link and initiating an emergency call
• Manual reset options to prevent false alarms

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🔧 Key Components & Features

Component	Function
Accelerometer	Detects sudden impact or motion changes
Tilt Sensor	Detects vehicle tipping or falling
GPS Module (Neo-6M)	Captures real-time coordinates
GSM Module (SIM800)	Sends SMS, makes emergency calls
Bluetooth Module	Enables commands like STOP, RESET, TEST, TRIGGER, HELP
LCD Display (I2C)	Displays system status in real time
Buzzer + Laser	Immediate local audio/visual alerts
Servo Motor	Simulates vehicle lock during accident
Emergency Button	Allows manual reset in case of false trigger

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🛠️ Software & Libraries Used

• Microcontrollers: Arduino UNO, Arduino NANO
• Libraries:
  • SoftwareSerial
  • AltSoftSerial
  • TinyGPS++
  • LiquidCrystal_I2C
  • Servo.h
  • Wire.h
  • math.h

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🔄 System Workflow

1. Detection:
   • Accelerometer and tilt sensor constantly monitor motion and orientation.
2. Immediate Alerts:
   • If an accident is detected, the system triggers the buzzer, laser, servo lock, and Bluetooth alert.
3. Emergency Response:
   • GPS fetches the location
   • GSM module sends an SMS with a Google Maps link
   • An emergency call is automatically placed
4. Manual Control:
   • Emergency button or Bluetooth can reset the system in case of a false alarm.

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📩 Emergency SMS Example

Accident detected! Location: https://maps.google.com/?q=LAT,LONG
Please send help immediately.

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🔍 Future Scope

This project provided hands-on experience in Arduino, IoT communication, and real-time safety mechanisms. I'm excited to further explore advanced tech solutions that can make a real-world impact on road safety and emergency response systems.

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📁 Repository Structure

Arduino-Accident-Detection-Project/
├── docs/                 # Project images and documentation
│   ├── 1.png
│   ├── 2.png
│   ├── 3.png
│   ├── 4.png
│   ├── 5.png
│   ├── 6.png
│   └── 7.png
├── src/                  # Arduino source code
├── circuit/              # Circuit diagrams
└── README.md             # Project documentation

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🚀 Getting Started

Prerequisites

• Arduino IDE (v1.8.x or higher)
• Required libraries (listed above)
• Hardware components as per circuit diagram

Installation

1. Clone the repository:

git clone https://github.com/Shihabsarker93/Arduino---Accident-Detection-Project.git
cd Arduino---Accident-Detection-Project

2. Install required libraries:

   • Open Arduino IDE
   • Go to Sketch → Include Library → Manage Libraries
   • Search and install each library listed in the Software & Libraries section

3. Upload the code:

   • Connect your Arduino board via USB
   • Open the .ino file from the src folder
   • Select the correct board and port
   • Click Upload

4. Configure GSM Module:

   • Insert a working SIM card
   • Update emergency contact numbers in the code
   • Test SMS and call functionality

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🎯 Bluetooth Commands

Command	Function
STOP	Stop all alerts
RESET	Reset the system
TEST	Test all components
TRIGGER	Manually trigger accident alert
HELP	Display available commands

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📝 License

This project is open-source and available for educational purposes.

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👨‍💻 Author

Md Shihab Sarker
Computer Science & Engineering Student
GitHub: @Shihabsarker93

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🙏 Acknowledgments

This project was developed as part of the Computer Interfacing course. Special thanks to my professors and teammates for their guidance and support throughout the development process.