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A pulse wave motion artifact removal method based on parameter adaptive optimization of vmd

A motion artifact and pulse wave technology, applied in the field of biomedical signal acquisition and processing, can solve the problems of pulse wave signal removal and other issues

Active Publication Date: 2020-10-02
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The present invention aims to solve the problem of motion artifact removal in pulse wave signals, and proposes a pulse wave motion artifact removal method for parameter adaptive optimization VMD

Method used

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  • A pulse wave motion artifact removal method based on parameter adaptive optimization of vmd
  • A pulse wave motion artifact removal method based on parameter adaptive optimization of vmd
  • A pulse wave motion artifact removal method based on parameter adaptive optimization of vmd

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Embodiment 1

[0086] This embodiment describes the process of applying the "method for removing pulse wave motion artifacts by parameter adaptive optimization VMD" of the present invention to the scene of pulse wave motion artifact removal.

[0087] figure 1 Be the flowchart of this method and the flowchart of this embodiment, as can be seen from the figure, this method comprises the following steps:

[0088] Step A: Initialize the relevant parameters, traverse the parameter value matrix, and complete the optimized variational mode decomposition of the signal under each parameter combination;

[0089] figure 2 It is a schematic flow diagram of this step and the optimized variational mode decomposition algorithm in this embodiment;

[0090] Step A.1: Initialize the relevant parameters of the variational mode decomposition algorithm;

[0091] Initialize [K min ,K max ,K step ], [α min ,α max ,α step ], where K min is the minimum value of the eigenmode decomposition number K, K max...

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Abstract

The invention relates to a pulse wave motion artifact removal method for parameter self-adaptive optimization of VMD, which belongs to the technical field of biomedical signal acquisition and processing; the method optimizes the objective function of variational mode decomposition and adopts the degree of eigenmode correlation The correlation coefficient fused with the degree of dispersion of the central frequency evaluates the results of the variational mode decomposition, realizes the adaptive optimization of the variational mode decomposition for the parameters of the pulse wave signal, and obtains the eigenmode of the pulse wave {u k}, according to the relative energy of different components of the signal corresponding to the frequency band, the denoising rule is designed to remove the pulse wave motion artifact. Compared with the prior art, the present invention improves the quality of pulse wave variational mode decomposition, improves the effect of removing motion artifacts, and simplifies the data complexity in the process of removing motion artifacts.

Description

technical field [0001] The invention relates to a pulse wave motion artifact removal method for parameter self-adaptive optimization VMD, belonging to the technical field of biomedical signal acquisition and processing. Background technique [0002] A large number of clinical measurement results show that the pulse wave (PPG) contains rich physiological and pathological information of the cardiovascular system, and its waveform characteristics are closely related to cardiovascular diseases. The pulse is usually measured by a photoelectric pulse sensor in clinical practice, and its signal is reflected as a photoplethysmography wave, which is a non-invasive measurement method. Use two light sources in the visible red spectrum and infrared spectrum to alternately irradiate the detection site (usually the earlobe or fingertip), and obtain the light absorption of the tissue during the pulsation period through reflection or transmission, so as to obtain the basic waveform and puls...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G16H40/60
CPCG16H40/60G06F2218/04
Inventor 郭树理李亚静戴忠健何昆仑韩丽娜范利刘宏斌王春喜曹丰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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