Lightweight PnP ECG sensor for monitoring of biomedical signals

This paper describes the design and implementation of a single-channel, low cost ECG sensor for home use. ECG monitoring is traditionally done in hospitals as the equipment involved is bulky, difficult to use and expensive for home usage. The presented sensor enables ECG home monitoring as it fulfills a number of criteria related to home usage: safe to use in home environment, lightweight, cheap and easy to use. The ECG sensor operates over a frequency range of 0.05 - 40 Hz or 0.05 - 100 Hz and includes 50 Hz - 60 Hz Notch filters to remove mains induced interference. The component specifications were chosen such that the circuit currents and voltages satisfy the standards of the Association for the Advancement of Medical Instrumentation (AAMI). Tests were performed, and the acquired raw ECG data was verified to be acceptable.