US 11,730,417 B2
Apparatus and method for detecting R peak of ECG signal using adaptive median filter
Tae Wuk Bae, Daejeon (KR); Kee Koo Kwon, Daejeon (KR); and Kyu Hyung Kim, Daejeon (KR)
Assigned to ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed on Sep. 15, 2021, as Appl. No. 17/475,913.
Claims priority of application No. 10-2020-0126305 (KR), filed on Sep. 28, 2020.
Prior Publication US 2022/0095981 A1, Mar. 31, 2022
Int. Cl. A61B 5/352 (2021.01); A61B 5/00 (2006.01)
CPC A61B 5/352 (2021.01) [A61B 5/725 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of detecting an R peak of an electrocardiogram (ECG) signal using an adaptive median filter, which is performed by a computer, the method comprising:
allowing an ECG signal (hereinafter, referred to as a first ECG signal) received from an ECG signal measuring apparatus having a predetermined sampling rate to pass through an adaptive median filter;
calculating a difference value between the first ECG signal and a signal (hereinafter, referred to as a second ECG signal) passing through the adaptive median filter;
extracting R peak candidate groups by applying a maximum filtering size and an adaptive threshold applicable in the adaptive median filter to the calculated difference value between the first and second ECG signals; and
detecting an R peak candidate group having a maximum value among the R peak candidate groups as an R peak.