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First Defence
Fall & accident detection wearable with GPS
First Defence is a wearable device designed for personal safety that detects falls and accidents using accelerometer and gyroscope sensors.
When a fall or sudden impact is detected, the device automatically sends an SOS alert with the user's GPS coordinates to pre-configured emergency contacts via SMS and a connected mobile application.
The project addresses a real-world safety concern, especially for elderly individuals and people working in hazardous environments.
Technologies Used
ArduinoMPU6050 (Accelerometer/Gyroscope)GPS ModuleGSM ModuleMobile AppC/C++
What I Learned
- ▹Sensor fusion with accelerometer and gyroscope data
- ▹Fall detection algorithms and threshold calibration
- ▹GPS integration for location tracking
- ▹GSM communication for SMS alerts
- ▹Mobile app development for IoT devices
Unique Aspects
✦Real-time fall detection with minimal false positives
✦Automatic GPS-based location sharing
✦Multiple alert channels (SMS, App notification)
✦Compact wearable form factor
Items Required
- Arduino Nano/ESP32
- MPU6050 Accelerometer & Gyroscope Module
- NEO-6M GPS Module
- SIM800L GSM Module
- Li-Po Battery
- 3D printed enclosure