ELIMINATING METHOD OF MOTION ARTIFACT FROM PPG SIGNAL

摘要

PURPOSE: A motion artifact removal method of PPG signals is provided to precisely detect PPG(Photo-plethysmography) signals by effectively filtering motion artifact from the PPG signals although the amplitude of motion artifact is high. CONSTITUTION: Periodically, PPG input signals in which waveform repeats are inputted on a real time basis. The whole inputted PPG input signals are successively separated according to each period and a plurality of division input signals are produced. Plural division inputs are accurately separated from the PPG input signals. Output signals composed of samples in which motion artifact is filtered are produced. The PPG output signals in which motion artifact is filtered are outputted on a real time basis by connecting the output signals according to the pass of the time.