The Photoplethysmography Signal Analysis Based on Wavelet Transform

Nowadays it is more difficult to continuously monitoring physiological parameters in the clinical work, thus we use photoplethysmography signal to simultaneously supervise heart rate and respiration rate parameters of human body. This paper mainly adopt wavelet analysis algorithm analyzing and processing the pulse signal, of which employ wave crests searching algorithm in the calculation of heart and apply wavelet transform combining with power spectrum method in the calculation of respiratory. The result indicates that the proposed methods can meanwhile obtain heart rate and respiration rate parameters, therefore providing an easy monitor way for clinic workers.