SCA Wearable Watch

The SCA Project wearable watch is an innovative research tool designed to measure pulse rate and wrist tissue oxygenation in real-time using Near-Infrared Spectroscopy (NIRS). This compact, non-invasive device provides accurate physiological data, enabling researchers to explore hemodynamic and cardiovascular dynamics in various settings, including clinical studies, sports science, and wellness monitoring

Technical Specifications

General Specifications

Device Type: Wearable wristwatch.
Weight and Dimensions: Lightweight, ergonomic design for continuous wearability.
Material: Hypoallergenic, durable casing with a comfortable strap.
Battery Life: Rechargeable lithium-ion battery with up to 24 hours of continuous monitoring.
Charging: USB-C fast charging.
Connectivity: Wireless (Bluetooth Low Energy) for seamless synchronization with Android and PC platforms.
Water Resistance: Splash-proof (IPX4 rating).

Measurement Capabilities

Pulse Rate:
- Range: 30–220 beats per minute (bpm).
- Accuracy: ±2 bpm.
- Sampling Rate: 1 Hz.
Wrist Tissue Oxygenation (NIRS):
- Parameters Measured: Oxyhemoglobin (HbO), deoxyhemoglobin (Hb), total hemoglobin (tHb), tissue oxygenation index (TOI).
- Wavelength Range: 760–850 nm.
- Penetration Depth: Up to 2 cm (suitable for wrist tissue monitoring).
- Sampling Rate: 1–10 Hz.
- Detector Type: Photodiodes optimized for low-light conditions.
Gyroscope Sensor:
- Purpose: Captures wrist motion and orientation to complement physiological measurements.
- Axes: 3-axis gyroscope for detailed motion tracking.
- Accuracy: ±0.01°/s (angular velocity).
- Applications: Motion analysis, activity detection, and artifact reduction in physiological signals.

Software and Data Analysis

Android App:
- Real-time data visualization with interactive graphs for pulse rate and oxygenation levels.
- Configurable settings for custom monitoring and alerts.
- Wireless data transfer for real-time feedback and control.
Data Export: Multiple formats (e.g., CSV, Excel) for offline analysis.
Integration: Compatible with research tools and data analysis platforms (MATLAB, Python, etc.).

Device Features

Real-Time Monitoring: Continuous measurement of pulse rate and oxygenation with low latency.
Compact and Portable: Designed for research in dynamic environments.
Low Power Consumption: Energy-efficient system for extended battery life.
Multi-Subject Capability: Supports simultaneous monitoring of multiple devices for group studies.
Secure Data Handling: End-to-end encryption for wireless data transmission.

Safety and Standards