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Pulse wave motion artifact removal method based on parameter adaptive optimization VMD

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

Active Publication Date: 2019-10-08
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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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

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  • Pulse wave motion artifact removal method based on parameter adaptive optimization VMD
  • Pulse wave motion artifact removal method based on parameter adaptive optimization VMD
  • Pulse wave motion artifact removal method based on parameter adaptive optimization VMD

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Embodiment 1

[0085] This embodiment describes the process of applying "a pulse wave motion artifact removal method for parameter adaptive optimization of VMD" of the present invention to a pulse wave motion artifact removal scene.

[0086] figure 1 The flow chart of this method and the flow chart of this embodiment, as can be seen from the figure, this method comprises the following steps:

[0087] Step A: Initialize the relevant parameters, traverse the parameter value matrix, and complete the optimal variational modal decomposition of the signal under each parameter combination;

[0088] figure 2 A schematic flowchart of the optimized variational modal decomposition algorithm in this step and this embodiment;

[0089] Step A.1: Initialize the parameters related to the variational mode decomposition algorithm;

[0090] Initialize [K min ,K max ,K step ], [α min ,α max ,α step ], where K min is the minimum value of the number K of eigenmode decomposition, K max is the maximum v...

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Abstract

The invention relates to a pulse wave motion artifact removal method for parameter adaptive optimization VMD, and belongs to the technical field of biomedical signal acquisition and processing. The method comprises the following steps of by optimizing an objective function of variational mode decomposition, evaluating the variational mode decomposition result by adopting a correlation coefficientwith the fusion of the intrinsic mode correlation degree and the central frequency dispersion degree; carrying out parameter adaptive optimization variational mode decomposition on a pulse wave signalto obtain an intrinsic mode [uk] of the pulse wave, and designing a denoising rule according to the relative energy of frequency bands corresponding to different components of the signal to remove the motion artifacts of the pulse wave. Compared with the prior art, the method has the advantages that the quality of pulse wave variational mode decomposition is improved, the effect of removing the motion artifacts is improved, and the data complexity in the process of removing the motion artifacts is simplified.

Description

technical field [0001] The invention relates to a pulse wave motion artifact removal method for parameter 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. Pulse is usually measured by photoelectric pulse sensor in clinic, and its signal is reflected as photoplethysmography, which is a non-invasive measurement method. Alternately irradiate the detection site (usually the earlobe or fingertip) with two light sources located in the visible red spectrum and the infrared spectrum, and obtain the light absorption of the tissue during pulsation through reflection or transmission, thereby obtaining the basic waveform and pulse rate of the pulse wave. E...

Claims

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Application Information

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Patent Type & Authority Applications(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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