Heart-rate estimation method, device and system based on fusion of electrocardiogram and pulse signals

A pulse signal and electrocardiographic signal technology, applied in the field of heart rate estimation based on the fusion of electrocardiographic signal and pulse signal, can solve problems such as affecting accuracy, and achieve the goal of improving accuracy, improving alarm accuracy and sensitivity, and suppressing false alarms. Effect

Inactive Publication Date: 2018-02-16
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is sensitive to motion artifacts, which become very strong during strenuous physical activity and affect the accuracy of HR estimation

Method used

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  • Heart-rate estimation method, device and system based on fusion of electrocardiogram and pulse signals
  • Heart-rate estimation method, device and system based on fusion of electrocardiogram and pulse signals
  • Heart-rate estimation method, device and system based on fusion of electrocardiogram and pulse signals

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Embodiment 1

[0068] This embodiment discloses a heart rate estimation method based on the fusion of ECG signals and pulse signals, such as figure 1 shown, including the following steps:

[0069] Step 1: Estimating heart rate based on ECG signal and pulse signal respectively;

[0070] (1) Estimate HR1 based on ECG signal

[0071] The WFDB toolbox provides two common algorithms, gqrs and sqrs, to detect QRS complexes. Two QRS complex detectors, GQRS and SQRS, were used to obtain SQIs and HR from ECG, respectively; meanwhile, open-source algorithms wabp and fuzzy logic analysis were used to obtain SQIs and HR from ABP signals.

[0072] According to the signal characteristics in the database used, 5s is selected as the window length obtained after many experiments. In the HR_window with a duration of 5 seconds, HR1 is calculated from the RR interval:

[0073]

[0074] where the median RR interval is used instead of the mean RR interval to avoid the influence of extreme RR interval value...

Embodiment 2

[0120] The purpose of this embodiment is to provide a computing device.

[0121] A heart rate estimation device based on the fusion of electrocardiographic signals and pulse signals, comprising a memory, a processor, and a computer program stored in the memory and operable on the processor, and the processor implements the following steps when executing the program, including :

[0122] Estimation of heart rate based on ECG signal and pulse signal respectively;

[0123] Evaluate the signal quality of the ECG signal and the pulse signal respectively, and obtain the signal quality index of the two;

[0124] Based on the two signal quality indices, Kalman filter processing is performed on the two estimated heart rate values ​​respectively;

[0125] A weighted fusion is performed on the two estimated heart rate values ​​processed by the Kalman filter.

Embodiment 3

[0127] The purpose of this embodiment is to provide a computer-readable storage medium.

[0128] A computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the following steps are performed:

[0129] Estimation of heart rate based on ECG signal and pulse signal respectively;

[0130] Evaluate the signal quality of the ECG signal and the pulse signal respectively, and obtain the signal quality index of the two;

[0131] Based on the two signal quality indices, Kalman filter processing is performed on the two estimated heart rate values ​​respectively;

[0132] A weighted fusion is performed on the two estimated heart rate values ​​processed by the Kalman filter.

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Abstract

The invention discloses a heart-rate estimation method and device based on fusion of electrocardiogram signals and pulse signals. The heart-rate estimation method includes the steps that heart rate estimation is carried out based on the electrocardiogram signals and the pulse signals respectively; the electrocardiogram signals and the pulse signals are subjected to signal quality evaluation respectively, and the signal quality index of the electrocardiogram signals and the signal quality index of the pulse signals are obtained; based on the two signal quality indexes, the two estimated heart rate values are subjected to kalman filtering processing; the two estimated heart rate values subjected to kalman filtering processing are subjected to weight fusion. By means of the heart-rate estimation method, the accuracy of heart-rate estimation can be effectively increased, and a reference is provided for clinical caring.

Description

technical field [0001] The invention belongs to the field of physiological parameter testing, and in particular relates to a heart rate estimation method, device and system based on the fusion of electrocardiographic signals and pulse signals. Background technique [0002] Analysis of the electrocardiogram ECG is a time-varying signal reflecting the electrical activity of the heart produced by the depolarization and repolarization of the atrium and ventricles. Heart rate HR estimation from the ECG signal or other cardiovascular signals is used in clinical settings (such as intensive care unit monitoring) It is very important to trigger an alarm when HR exceeds the specified threshold, and the accuracy of the alarm is crucial to the timely treatment and health care of ICU patients. However, due to noise and human factors such as physical activity and loose electrodes, ECGs can be heavily contaminated and possibly completely lost. Therefore, clinicians must perform manual con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0245A61B5/00
CPCA61B5/0245A61B5/7203A61B5/7235A61B5/725
Inventor 魏守水刘玉琳张帅张亚涛
Owner SHANDONG UNIV
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