A developed non-contact capacitive ECG system using an enhanced Fourier interpolation technique estimated heart rate with an accuracy of ±2 beats across different cloth thicknesses.
A newly developed non-contact capacitive ECG system using enhanced Fourier interpolation can accurately estimate heart rate within ±2 beats, demonstrating potential for portable, long-term cardiac monitoring.
Cardio-vascular health monitoring has gained considerable attention in the recent years. Principle of non-contact capacitive electrocardiograph (ECG) and its applicability as a valuable, low-cost, easy-to-use scheme for cardio-vascular health monitoring has been demonstrated in some recent research papers. In this paper, we develop a complete non-contact ECG system using a suitable front-end electronic circuit and a heart-rate (HR) measurement unit using enhanced Fourier interpolation technique. The front-end electronic circuit is realized using low-cost, readily available components and the proposed HR measurement unit is designed to achieve fairly accurate results. The entire system has been extensively tested to verify its efficacy and test results show that the developed system can estimate HR with an accuracy of ±2 beats. Detailed tests have been conducted to validate the performance of the system for different cloth thicknesses of the subject. Some basic tests which illustrate the application of the proposed system for heart-rate variability estimation has been conducted and results reported. The developed system can be used as a portable, reliable, long-term cardiac health monitoring device and can be extended to human drowsiness detection.
Thakur et al. (Sat,) conducted a other in Cardio-vascular health monitoring. Non-contact capacitance based electrocardiograph and heart-rate measurement unit was evaluated on Heart-rate estimation accuracy. A developed non-contact capacitive ECG system using an enhanced Fourier interpolation technique estimated heart rate with an accuracy of ±2 beats across different cloth thicknesses.