Simple and efficient baseline removal method for a smartphone based ECG detection device

摘要

Cardiovascular disease (CVD) is the leading cause of global death. The electrocardiogram (ECG) is the most widely adopted tool that measures the electrical activities of the heart from the body surface. A portable ECG and temperature detection device through the integration of ADS1292 into a smartphone was achieved, which has the advantage of high integration, convenience and comfort; reducing cost, time and travel; enabling immediate medical assistance in case of emergency. Baseline wandering is an important problem needed to be solved for the smartphone based ECG detection device because of the adoption of dry stainless steel ECG electrodes. A novel simple and efficient ECG baseline removal method based on a median filter and Savitzky-Golay filter was proposed and implemented on a smartphone without noticeable signal distortion.