A heart rate detection method for wearable electrocardiogram with the presence of motion interference.
10.7507/1001-5515.202011011
- Author:
Jialing XIE
1
;
Yushun GONG
1
;
Liang WEI
1
;
Juan WANG
2
;
Weiming LI
1
;
Yongqin LI
1
Author Information
1. Department of Biomedical Engineering and Imaging Medicine, Army Medical University, Chongqing 400038, P.R.China.
2. Emergency Department, First Affiliated Hospital of Army Medical University, Chongqing 400038, P.R.China.
- Publication Type:Journal Article
- Keywords:
electrocardiogram;
heart rate detection;
motion interference;
wearable device
- MeSH:
Electrocardiography;
Heart Rate;
Humans;
Signal Processing, Computer-Assisted;
Wavelet Analysis;
Wearable Electronic Devices
- From:
Journal of Biomedical Engineering
2021;38(4):764-773
- CountryChina
- Language:Chinese
-
Abstract:
The dynamic electrocardiogram (ECG) collected by wearable devices is often corrupted by motion interference due to human activities. The frequency of the interference and the frequency of the ECG signal overlap with each other, which distorts and deforms the ECG signal, and then affects the accuracy of heart rate detection. In this paper, a heart rate detection method that using coarse graining technique was proposed. First, the ECG signal was preprocessed to remove the baseline drift and the high-frequency interference. Second, the motion-related high amplitude interference exceeding the preset threshold was suppressed by signal compression method. Third, the signal was coarse-grained by adaptive peak dilation and waveform reconstruction. Heart rate was calculated based on the frequency spectrum obtained from fast Fourier transformation. The performance of the method was compared with a wavelet transform based QRS feature extraction algorithm using ECG collected from 30 volunteers at rest and in different motion states. The results showed that the correlation coefficient between the calculated heart rate and the standard heart rate was 0.999, which was higher than the result of the wavelet transform method (
