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In this paper, we proposed and evaluated signal processing algorithms which could efficiently reduce motion artifacts contained in the photoplethysmogram (PPG) signal. Time-domain PPG signal was analyzed to find frequency distribution of the fundamental and harmonic components caused by the arterial blood flow and motion artifact. A new artificial PPG signal could be reconstructed by using only the...
In this study, we analyzed frequency characteristics of photoplethysmogram (PPG) signal to improve the accuracy of SpO2 by reducing the motion artifacts. 23 kinds of different signals generated by SpO2 test equipment were used for this analysis. The results of analysis showed that most of PPG signals analyzed in this study consisted of the fundamental, 2nd and 3rd harmonic components caused by arterial...
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