Method and device for extracting atrial fibrillation signal
An extraction method and extraction device technology, applied in the field of signal processing, can solve problems such as poor separation effect, inclusion of atrial fibrillation signals, obvious distortion of atrial fibrillation signals, etc.
Active Publication Date: 2019-07-19
GUANGDONG UNIV OF TECH
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Problems solved by technology
Among them, the template cancellation method is sensitive to the morphological changes of the QRST complex, and the extracted atrial fibrillation signal is obviously distorted; as far as the blind signal separation method is concerned, because it uses high-order statistics of the signal, the separation effect is poor. The extracted atrial fibrillation signal is still mixed with other noise signals
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[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0048] The embodiment of the invention discloses a method, a device, a device, and a computer-readable storage medium for extracting atrial fibrillation signals to extract atrial fibrillation signals with higher purity and accuracy.
[0049] See figure 1 , An atrial fibrillation signal extraction method provided by an embodiment of the present invention includes:
[0050] S101. Obtain the ECG mixed signal, and preprocess the ECG mixed signal...
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The invention discloses a method for extracting an atrial fibrillation signal, which comprises: obtaining an ECG mixed signal, and preprocessing the ECG mixed signal; filtering out a ventricular signal from the preprocessed ECG mixed signal to obtain a non-ventricular signal The signal is mixed with atrial fibrillation signal and noise signal; based on the separable characteristics of the non-ventricular signal in the autocorrelation domain, the autocorrelation matrix of the non-ventricular signal is generated; the noise signal is removed by the autocorrelation matrix and the least square method, so as to obtain a higher The purity and accuracy of the atrial fibrillation signal makes it easy to identify the type of atrial fibrillation signal and the cause of atrial fibrillation. Correspondingly, the atrial fibrillation signal extraction device, equipment and computer-readable storage medium disclosed in the present invention also have the above-mentioned technical effects.
Description
Technical field [0001] The present invention relates to the technical field of signal processing, and more specifically, to a method, device, equipment and computer-readable storage medium for extracting atrial fibrillation signals. Background technique [0002] Atrial fibrillation (abbreviated as atrial fibrillation) is the most common persistent arrhythmia, with an incidence of 0.4-1.0%. With age, the incidence of atrial fibrillation continues to increase, and the incidence rate is as high as 8% in people over 80 years old. The prevalence of atrial fibrillation is also closely related to diseases such as coronary heart disease, hypertension and heart failure. With the continuous increase of aging in modern society, the number of patients with atrial fibrillation will gradually increase. Among heart disease patients, the mortality rate of patients with atrial fibrillation is twice that of other patients. Therefore, the diagnosis and treatment of atrial fibrillation has always ...
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IPC IPC(8): A61B5/046A61B5/361
CPCA61B5/7203A61B5/7235A61B5/316A61B5/361
Inventor 谢胜利曾德宇吕俊
Owner GUANGDONG UNIV OF TECH