公开(公告)号：US20240130631A1

公开(公告)日：2024-04-25

申请号：US18515040

申请日：2023-11-20

Applicant: SOUTH CHINA NORMAL UNIVERSITY

Inventor： Baoxian YU ,  Yue HOU ,  Han ZHANG ,  Zhiqiang PANG

IPC: A61B5/08 ,  A61B5/00

CPC classification number: A61B5/0816 ,  A61B5/7207 ,  A61B5/725 ,  A61B5/7257

Abstract: Disclosed are a method, device, computer system for obtaining respiratory signal. The method includes: filtering aliasing vital signs signals obtained by piezoelectric sensor to obtain target vital signs signals; performing a Fourier transform to obtain first frequency response, and generating an upper envelope according to each frequency point of the first frequency response; determining main peak frequency point and main peak amplitude according to the frequency point corresponding to the maximum value of flat tops; identifying the flat top corresponding to the main peak amplitude as main peak flat top; determining minimum value frequency point according to the minimum value between the main peak flat top and an adjacent flat top or flat bottom; and determining respiratory spectrum principal component interval according to the minimum value frequency point; reconstructing the respiratory spectrum principal component interval through an empirical wavelet function to obtain reconstructed respiratory signal.