Ambulatory ECG system for cardiologists

A low cost ECG machine and research on ECG features with its implementation has been presented in this paper. The features presented can help in classifying the signals. This paper attempts to achieve the same functionality as a traditional ECG machine but based on three leads, hence reducing the size and cost as compared to a 12-lead ECG machine. The live data was obtained on the PC using a sound card oscilloscope. The offline data was studied on MATLAB. Various methods were used to detect the PQRST points of the ECG signal. This paper will also discuss in detail how ECG signals from the body are obtained and are amplified and sent to the PC for analysis.