Portable low-power system for one-lead ECG monitoring and datalogging

This work proposes a portable system for the measurement of ECG with a one-lead configuration for long term recording. The collected data are stored on high-density SD card for off-line examination. The present implementation focuses on low-power electronics to increase the battery lifetime, achieving about 16-h duration with two 158 mAh-capacity batteries. The system has proved to be able to detect heart rate anomalies on test subjects.