This project applies Zephyr RTOS on the nRF52833 to deliver reliable ECG acquisition with BLE streaming for downstream analysis and visualization.
Zephyr RTOS Embedded Medical Device
nRF52833-based embedded medical device using Zephyr RTOS, BLE, and ECG acquisition.
Key Reminders
- Describe the Zephyr task architecture and why RTOS scheduling mattered.
- Explain BLE data streaming and power considerations.
- Discuss ECG signal integrity and filtering decisions.
Technologies
System Overview
Built an embedded medical device platform on the nRF52833 to acquire ECG signals and stream data over BLE for analysis.
RTOS Architecture
Zephyr tasks manage sampling, preprocessing, and BLE transmission with deterministic timing and low power use.
c code
Code example forthcoming
Zephyr thread scheduling and BLE notification routine.
Hardware and Signal Chain
The analog front end feeds the ADC, with filtering stages tuned for ECG frequency bands and noise rejection.
Testing and Validation
Bench validation focused on sampling stability, BLE throughput, and signal quality under motion artifacts.
Demo and Next Steps
Future work includes firmware hardening, expanded signal processing, and clinical pilot planning.