Design of respiratory wave reconstruction system based on ensemble empirical mode decomposition combined with wavelet threshold
HU Handong
XIE Lihong
LU Jinghui
PAN Jiating
WEN Jinping
ZHU Jianming
Abstract：To solve the problem of low accuracy when extracting respiratory rate(RR)from photoplethysmography(PPG)signals,we developed an embedded RR detection system.The system included pulse wave acquisition module,software control system,upper computer interface design,WeChat small program design and ensemble empirical mode decomposition combined with wavelet threshold(EEMD-WT)respiratory wave reconstruction algorithm design to realize real-time monitoring of patients' RR.Compared with the Min-dray ePM10 system,this system could obtain the PPG and reconstructed respiratory signals of the measured person under the condition of ensuring high accuracy and low power consumption,and accurately calculate the RR and display.The experimental results showed that the root mean squared error(RMSE)of RR reconstruction was 0.2147.This study can provide an effective solution for reconstruc-ting PPG respiratory waves.
Keywords：Respiratory wave reconstructionRespiratory rateEnsemble empirical mode decompositionWavelet thresholdPulse detection systemPhotoplethymography
Publication Date：2026-06-30
Online Publishing Date：2026-09-11(First online date of this platform, not the publication date of the document)
Pages：7( 190-196 )