CHEN Zhen-cheng, GAN Yong-jin, ZHU Jian-ming. Reflective type oxygen saturation detection system based on AFE4400[J]. 2016, 35(5): 91-93+96. DOI: 10.13873/J.1000-9787(2016)05-0091-03.
Because of limitation of transmission type oxygen detecting method
using reflective type oxygen instrument to test blood oxygen saturation become main flow of development. Based on TI blood oxygen analog front-end chip AFE4400 and processor MSP430F5529
a design scheme of reflective type pulse oxygen saturation detection system is introduced. In system design process
compare denoising effect of several filtering algorithm based on wavelet transform
select the optimal filtering algorithm
use MSP430F5529 as core processor to complete aquisition of fingerpoint pulse signal and denoising processing. Through practical test
the system prototype machine realizes the function of pulse oxygen saturation detection.