Determining method and system for heart sound signals
A heart sound and signal technology, which is applied in the field of heart sound signal discrimination system, can solve the problems of large computational processing volume, difficult implementation, and complex discrimination condition setting, and achieves the effect of reducing the amount of calculation.
Active Publication Date: 2015-05-13
XIHUA UNIV
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However, the method of using the boundary line obtained by the support vector machine to distinguish the heart sound requires a large amount of calculation processing, and the setting of the judgment conditions is complicated, so it is not easy to implement
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[0056] The first purpose of the present invention is to provide a method for discriminating heart sound signals, which can effectively improve the discrimination accuracy while reducing the amount of calculation processing in the heart sound discrimination process. The second purpose of the present invention is to provide A heart sound signal discrimination system.
[0057] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0058] The discrimination method of the heart sound signal that the embodiment of the present ...
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The invention discloses a determining method for heart sound signals. The method comprises setting model parameters to extract heart sound characteristic waveforms; performing heart sound detection and acquiring heart sound data; generating the heart sound data into the characteristic waveforms; calculating heart sound characteristic parameters in the waveforms; performing calculation to obtain boundary lines of distribution ranges of the heart sound characteristic parameters; generating the obtained boundary lines into approximate elliptic curves, and calculating elliptic curve parameters (xc, yc, a, b, theta); obtaining heart sound characteristic parameters (X,Y) of users to be determined, and performing coordinate transformation on the heart sound characteristic parameters (X,Y) through ellipse parameters (xc, yc, theta); determining whether the heart sound characteristic parameters obtained after coordinate transformation are in the elliptic curves, and determining the heart sound signals. According to the determining method for heart sound signals, the calculation amount of heart sound determination can be effectively reduced, and the determining accuracy can be improved.The invention further discloses a determining system for heart sound signals.
Description
technical field [0001] The present invention relates to the technical field of heart sound processing, more specifically, to a heart sound signal discrimination method, and also to a heart sound signal discrimination system. Background technique [0002] According to statistics, about 8 out of 1,000 newborns suffer from congenital heart disease, and ventricular septal defect (VSD) is the most common congenital heart disease. According to the situation of patients with ventricular septal defect, it is sometimes necessary to perform surgery as soon as possible. Therefore, using a relatively simple heart sound measurement method and a heart sound discrimination method, and adopting an appropriate treatment method for a child with congenital heart disease at a suitable period in the growth process can be used. ease the burden on patients. [0003] In the diagnosis of heart disease, auscultation has existed in ancient times, that is, to judge the health status of the heart based...
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IPC IPC(8): A61B7/00
Inventor 王海滨江钟伟孙树平
Owner XIHUA UNIV