Real-time processing and analysis of cardiac signals using Android smartphones

This paper presents a trial to use smart phones in the processing and analysis of cardiac signs like ECG, PPG. The signals are imported via microphone port to the mobile device and further processed by Android application. In addition to the collection and visualization, the application performs the detections of QRS complexes and PPG local maxima in order to determine heart rate, rhythm abnormalities, PTT interval, blood pressure. Also the temperature measurement is included. The system operates in real time, behind a low occupation of the processor resources. The operational principle, system architecture and preliminary testing results are presented. As such it can be employed in various telemedical applications.