Adaptive radial artery pulse rate measurement using Piezo film sensor based on ensemble empirical mode decomposition

This research aims to measure the radial artery pulse rate using Piezo film sensor. Being thin and lightweight, Piezo film can be particularly useful for wearable applications. However, it suffers from different kinds of noises. We use EEMD analyzing method to estimate the radial pulse from the noisy data. Although EEMD is considered to be an adaptive method, it is affected by mode mixing effect limiting its uses. We propose in this paper a Weight Factor Mode (WFM) to limit such an aspect. We conducted experimentation on a data set with various pulse rate (60 to 90 ppm) measured from seven subjects. The obtained results show that we were able to estimate the radial pulse rate in the data set adaptively.