An effective three way PPG acquiring and signal processing system by using square wave modulation

Chia Ching Chou, Wei Chin Huang, Wai-Chi Fang

研究成果: Conference contribution同行評審

2 引文 斯高帕斯(Scopus)

摘要

In this paper, an effective photoplethysmograph (PPG) acquiring and signal processing system based on square wave modulation is proposed. Through modulating the acquired signals on different frequency square waves, it is effective to get PPG signals with high SNR by using simple carrier wave generators and reduce the computation load and power. The proposed system includes an exquisite and wearable three way PPG front-end sensor for acquiring PPG signals, an FPGA-based DSP for signal modulation and an analog circuit with an efficient anti-aliasing filter for eliminating serious harmonic waves of the carriers. Finally, the proposed DSP is scheduled for chip fabrication using TSMC 0.18 um CMOS technology to accelerate the performance and reduce the cost. The computation load is reduced by 98.8% compared to conventional system without effective signal modulation and filtering. The proposed DSP operates at 6MHz and reduce 35.2% of power consumption with only 0.58 mW of power compared with the FPGA-based DSP. The proposed system is able to acquire stable PPG signals to accurately derive the physiological indexes of cardiovascular system such as heart rate, respiratory rate, oxygen concentration, etc..

原文English
主出版物標題2015 IEEE International Conference on Consumer Electronics, ICCE 2015
發行者Institute of Electrical and Electronics Engineers Inc.
頁面366-369
頁數4
ISBN(電子)9781479975426
DOIs
出版狀態Published - 23 3月 2015
事件2015 IEEE International Conference on Consumer Electronics, ICCE 2015 - Las Vegas, United States
持續時間: 9 1月 201512 1月 2015

出版系列

名字2015 IEEE International Conference on Consumer Electronics, ICCE 2015

Conference

Conference2015 IEEE International Conference on Consumer Electronics, ICCE 2015
國家/地區United States
城市Las Vegas
期間9/01/1512/01/15

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