SOONGSIL UNIVERSITY RESEARCH CONSORTIUM TECHNO-PARK;숭실대학교 산학협력단
发明人:
SHIN, Hyun-Chool,신현출,AN, Ji Hun,안지훈,SONG, Hee Mang,송희망
申请号：
KRKR2017/006642
公开号：
WO2018/048072A1
申请日:
2017.06.23
申请国别(地区):
KR
年份:
2018
代理人:
摘要：
The present invention relates to an apparatus for eliminating motion artifacts by using a PPG signal and a method thereof. A method for eliminating motion artifacts by a motion artifact elimination apparatus according to the present invention comprises the steps of: receiving a PPG signal and three-axis (X-, Y-, and Z-axis) acceleration signals measured from an examinee； extracting the PPG signal and the three-axis acceleration signals in each period representing a predetermined unit of time, and filtering the same using a predetermined bandwidth； Fourier-transforming the PPG signal and the three-axis acceleration signals corresponding to the period where the signals have been extracted, so as to obtain frequency-domain-transformed forms； calculating frequency domain-average power of each of the three-axis accelerations, and arranging power spectrums of the X-, Y-, and Z-axis accelerations in ascending order of their average power spectrums； and extracting a final power spectrum of the PPG signal by sequentially removing, from a power spectrum of the PPG signal, the power spectrums of the X-, Y-, and Z-axis accelerations in the order of their arrangement. The present invention can stably and efficiently eliminate motion artifacts by gradually removing three-axis accelerations from a PPG signal, starting from an axis along which the acceleration has a smaller average value.La présente invention concerne un appareil d'élimination d'artefacts de mouvement en utilisant un signal PPG et un procédé associé. Un procédé d'élimination d'artefacts de mouvement par un appareil d'élimination d'artefacts de mouvement selon la présente invention comprend les étapes consistant : à recevoir un signal PPG et des signaux d'accélération sur trois axes (axes X-, Y-, et Z) mesurés à partir d'une personne examinée； à extraire le signal PPG et les signaux d'accélération sur trois axes dans chaque période représentant une unité prédéterminée de temps, et à filtrer ces derniers en utilisant
