Dual Electrodes System for acquisition of ECG Waveform

Biological signals from the human body play a significance role in monitoring health condition of person. Among these signals which are derived from heart are coined as Electrocardiogram (ECG). The ECG signals allow cardiologist physician to know about the condition of the heart such as stroke and arrhythmia. But the problem in existing ECG unit in hospital care unit have three to twelve electrodes system with the wet Ag/AgCl electrode which needs well trained person. The research objective is to develop and design self-monitoring ECG system with dual electrode from the finger site for people who are suffering from and have a history of a cardio abnormality at home or workplace. Since all biological signals have noise and low frequency so the acquired signal is passed through designed filter and amplifiers. Further acquired signal are display and analyzed interfacing with NI myDAQ and biomedical workbench. 20 subjects of age under 30year ECG signal are acquired using developed prototype and heart rate is calculated. The ECG signals from developed prototype are compared with conventional ECG unit and almost similar results are obtained. Hence, the developed prototype can be used for monitor cardiovascular disease status for people suffering from arrhythmia as well as the athletes and soldiers can benefit to keep track of their heart condition. The developed ECG system is economical and safe to use.