Abstract
Due to technological advancements in electronics industry, wireless sensors in conjunction with mobile phones can be used anytime anywhere for ubiquitous healthcare applications. This paper presents the design and implementation of convenient and efficient method to display the visualization of real time ECG signal transmitted wirelessly using developed ECG sensor on smartphone. The proposed light weight, wearable and affordable system can be used by patients having persistent heart diseases for preliminary self-recognition. The sensor output is analyzed by calculating percentage error for R–R interval of acquired ECG waveform and heart rate using DALE technologies ECG simulator by setting it at 30, 60, 120 and 240 beats per minute (bpm). Sensor shows 100 % accuracy in heart rate validation at 30 and 60 bpm alongwith 99.8 % and 98.8 % accuracy at 120 and 240 bpm respectively. For R–R interval evaluation, it shows 100 % accuracy at 30 and 60 bpm whereas at 120 and 240 bpm accuracy remains at 98.00 % and 96.048 %. Clinical validation has been performed by comparing traces of developed prototype ECG sensor with Recorders and Medicare Systems commercial multilead ECG machine. It shows that the acquired QRS peak of developed ECG sensor is clear and of high quality with no visible noise superimposed on the ECG signal when compared with commercial multilead ECG machine.
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