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One aspect in analysis of soundness of the heart is to monitor the variation of p-p interval in ECG the electrocardiogram. This paper reports an efficient hardware method of identifying the p-wave in the ECG and counting the time interval between successive p-waves. The hardware unit named as PWLL (p-wave locked loop) gets locked to the p-wave of the given ECG automatically and provides the p-p interval...
Heart rate variability studies made on determining the instantaneous p-p interval of the ECG gives more closer results than that determined over r-r interval. This paper proposes the design and implementation of PWLL (P-Wave Locked Loop), for identifying the p-wave in the ECG and determining the time interval between successive p-waves. With the ECG input given, the PWLL gets locked to the p-wave...
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