BLISS: Blinking Low-Power Infrared Sensing System

A wearable eye health monitoring device to help prevent Computer Vision Syndrome and fatigue-related incidents through real-time blink detection and feedback.

👁️ Overview

BLISS (Blinking Low-power Infrared Sensing System) is a smart wearable device that monitors a user’s blinking behavior using infrared sensing and provides real-time alerts via vibration when signs of fatigue or CVS are detected.

It is:

Low-power and lightweight
BLE-enabled
90% accurate in static use cases (e.g., reading, driving)
Packaged in a compact 3D-printed form

🧑‍💻 Team

Name	Role
Taisuke Miyamoto	Algorithm and App Development
Tergel Molom-Ochir	Hardware & Logistics
Sashank Rao	Embedded Systems, BLE, Finance
Heta Shah	PCB Design
Advisor	Prof. Qiangfei Xia

❓ Problem Statement

60M+ Americans suffer from chronic sleep deprivation
81.9% of engineering students experience Computer Vision Syndrome (CVS)
~700 drowsy-driving deaths occurred in 2020
Lack of discreet, low-cost, user-friendly solutions to address blink-related fatigue

🎯 Goals

Detect user blinks in real-time
Measure:
- Blink frequency (±1 blink/min)
- Blink duration (±0.1s)
Alert users if:
- Blink frequency < 12 blinks/min
- Blink duration > 0.5s
Send alerts via vibration and BLE smartphone notifications

⚙️ System Features

BLE connectivity for mobile app integration
Onboard blink detection with IR sensor
Real-time alerting with haptic feedback
Compact form factor using custom PCB and 3D-printed housing
Safe IR emission (720nm compliant)

🧪 Testing Results

Condition	Actual Blinks	Detected Blinks	Accuracy
Stationary Head	34	37	91%
Constant Head Motion	24	28	67%

➡️ Stationary use cases (e.g., working on a computer or highway driving) are ideal for device use.

🧱 Hardware Components

IR Sensor (720nm, safe & effective)
- $2.93/unit, 100mA forward current
Adafruit Feather M0 Basic Proto
- ATSAMD21 Cortex-M0
- BLE via NRF51822
- USB charging
- $29.95/unit
LiPo Battery
Custom PCB
3D Printed Enclosure

🧠 Software Architecture

IR data sampling @ 75 Hz
Data smoothing and moving average
Blink detection using:
- Signal slope thresholding
- STD-weighted comparison
BLE data updates sent once/second

📱 App Features

Displays blink frequency and duration
Triggers vibration alerts on low frequency or long duration
(Planned) Reset functionality from app

📦 Deliverables

✅ Functional prototype of smart glasses
✅ Final PCB with 3D-printed enclosure
✅ BLE-enabled mobile app
✅ >90% accuracy in controlled conditions

🔄 Future Work

Add full BLE app reset functionality
Improve app UI
Further miniaturize the hardware
Reduce component costs

💰 Budget Summary

Item	Cost
MCU	$29.99
IR Sensors	$3.88
PCB	$5.13
Battery	$7.95
Total Spent	$421.14
Remaining	$78.86

🔐 Safety

IR emission wavelength: 720 nm
Verified safe under guidance from Radiation Safety Officer

📚 References

Key research topics include:

Blink frequency and duration analysis
IR safety standards
Computer Vision Syndrome epidemiology
Fatigue detection via eye behavior

📖 Full report available here: FPR Report

🙏 Acknowledgments

We thank:

Professor Qiangfei Xia for guidance and support
UMass ECE Department for project resources and infrastructure

📸 Demo & Images

Labeled view showing sensor, PCB, battery, and wiring inside glasses arm

*Final Product with 3D printed frame

📝 License

This project is for academic demonstration purposes. Contact the team for reuse or collaboration inquiries.

sasquash21/BLISS

ErrorLooks like something went wrong!

About

Topics

Resources

Uh oh!

Stars

Watchers

Forks

Releases

Packages 0

Languages

Error
Looks like something went wrong!

Packages