A method of automatic delineation of qrs for multi-channel electrocardiogram

Abstract

The invention discloses a multi-channel electrocardiogram QRS automatic delineation method, which adopts wavelet transform to generate real-time energy curve of each channel, calculates its kurtosis and other signal quality measures for the energy curve of each channel, and calculates the energy curve of the energy curve Take its absolute value, calculate the weighted average of the energy curves after taking the absolute values ​​of multiple channels according to the signal quality measurement, and use the averaged energy curve as a comprehensive ECG energy curve, and delineate it. Thus the present invention avoids the problem of R peak detection error due to the asynchronous delineation of individual channel signals; at the same time, the kurtosis value of the signal is referred to in the process of signal fitting, which avoids the problem that the waveform quality of a certain channel signal is too poor. Causes the problem that the quality of the overall comprehensive energy curve is reduced. Therefore, the ECG R-peak effect detected by the method of the present invention is stable and accurate, especially when the signal quality of some channels in the ECG signal is not up to standard, the position of the R-peak can also be accurately detected.

Description

technical field [0001] The invention belongs to the technical field of electrocardiogram detection, and in particular relates to a QRS automatic delineation method of a multi-channel electrocardiogram. Background technique [0002] Electrocardiogram (ECG) is an electrical signal synthesized by the action potentials generated by each part of the cardiomyocytes during the regular contraction and relaxation of the heart. waveform. The ECG usually consists of a series of identical waves, mainly including the following: [0003] P wave: represents the potential change of the left and right atrial depolarization process, which lasts 0.08-0111s, and the amplitude does not exceed 0.25mv. [0004] QRS complex: represents the potential change of the left and right ventricular depolarization process, which lasts 0.06-0.10s; a typical QRS complex contains three closely connected waves, the first downward wave is the Q wave, and the subsequent upward wave The high and decreasing wave ...

AI Technical Summary

Problems solved by technology

[0010] The algorithm proposed by Pan above is suitable for single-channel ECG, but multi-channel ECG often has two problems: (1) the signal quality of each channel is different; (2) the delineation of each channel is not synchronized

If a random channel is used as the basis for ECG delineation, the result may be inaccurate

Although Brekelmans synthesizes the signals of each channel to judge, it only simply superimposes the signals of each channel. If the lead position of the first channel is not placed properly, the signal is low and the noise is large, while the signal quality of the second channel is good. For the latter channel, the signal-to-noise ratio of the superimposed data decreases instead.

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