ABSTRACT
ABSTRACT: This paper presents a method for extracting the characteristic values of PPG signals with greater efficiency, which can deal with multi-channel PPG signals at the same time. The removal of baseline wander and high-frequency noise is based on Discrete Wavelet Transform. Then, PPG signals are divided into segments, and the modulus maxima method is used to extract the characteristic value in each segment of PPG signals. The result demonstrates that the proposed method can simultaneously extract the characteristic values of four PPG signals with a time span of 3 minutes. In conclusion, the method can deal with several long-duration PPG signals at the same time, which can greatly improve the efficiency of research related to human health.
