A sleep quality monitoring system and monitoring method based on magnetocardiography

A sleep quality and monitoring system technology, applied in the field of biomedicine, can solve problems such as inability to be widely used, expensive, and portable devices that fail to meet diagnostic standards, and achieve the effect of improving detection accuracy and reliability and improving accuracy.

Active Publication Date: 2022-04-22
HANGZHOU INNOVATION RES INST OF BEIJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the problem of diagnostic accuracy, none of the above sensors can match the gold standard PSG (polysomnography), especially for sleep monitoring of sleep disordered breathing (SDB) in children, all portable devices are not up to the diagnostic standard
[0004] The gold standard PSG has high requirements for technicians, complex operation, high price, and cannot be widely used. Therefore, it is necessary to provide a sleep quality monitoring system with low cost and easy operation, which can monitor the user's sleep state in real time and monitor the user's sleep quality. Quality is rated

Method used

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  • A sleep quality monitoring system and monitoring method based on magnetocardiography
  • A sleep quality monitoring system and monitoring method based on magnetocardiography
  • A sleep quality monitoring system and monitoring method based on magnetocardiography

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Experimental program
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Effect test

Embodiment 1

[0092] Such as figure 1 As shown, this embodiment provides a schematic structural diagram of a magnetocardiogram-based sleep quality monitoring system. The magnetocardiogram-based sleep quality monitoring system of this embodiment may include: a magnetocardiographic monitoring structure for collecting magnetic signals; A blood oxygen collection component for collecting blood oxygen signals; a signal processing device.

[0093] The signal processing device 6 (for example, it may be a computer) is connected to the magnetocardiographic monitoring structure and the blood oxygen collection component, which can perform the following figure 2 with image 3 The magnetocardiogram-based sleep quality monitoring method shown.

[0094] The magnetocardiographic monitoring structure of this embodiment includes: a magnetocardiographic acquisition vest 1 with a built-in cardiomagnetic sensor 2 for wearing on the target user;

[0095]The magnetocardiographic collection vest of this embodi...

Embodiment 2

[0101] Such as figure 2 with image 3 As shown, the embodiment of the present invention provides a magnetocardiogram-based sleep quality monitoring method, the execution subject of the method may be the signal processing device in the monitoring system, specifically, the monitoring may include the following steps:

[0102] S10. Collecting the cardiomagnetic signal and the blood oxygen signal of the sleep time of the target user by means of the monitoring system;

[0103] S20. Perform preprocessing and noise reduction processing on the magnetocardiographic signal, screen the available time period of the magnetic cardin signal and obtain the intermediate magnetic signal.

[0104] For example, the quality factor of the cardiomagnetic signal can be used to optimize the cardiomagnetic signal, and the available cardiomagnetic signal time can be screened, and the optimized cardiomagnetic signal can be denoised based on the soft thresholding method of empirical mode decomposition to...

Embodiment 3

[0119] An embodiment of the present invention provides a method for monitoring sleep quality based on magnetocardiography, in which the processing of each signal is described in detail.

[0120] In the above-mentioned step S20, performing preprocessing and noise reduction processing on the magnetic heart signal, screening the available time period of the magnetic heart signal and obtaining the intermediate magnetic signal may include the following sub-steps:

[0121] Substep S21, Segment the magnetic heart signal based on a sliding window of 1 minute, and use the "harr" wavelet base to decompose the magnetic heart signal with 7 layers of wavelet packets in each window, and convert the magnetic heart signal with a sampling rate of 256Hz Decomposed in 6 sub-bands (such as 0-1Hz, 1-5Hz, 5-15Hz, 15-50Hz, 15-100Hz and 100-120Hz), calculate the first 7th floor within minutes The proportion of wavelets to the energy of this layer ,in, for the magnetic signal Minutes the...

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Abstract

The present invention relates to a sleep quality monitoring system and method based on a magnetocardiogram. The monitoring method includes: S10, collecting the magnetocardiogram signal and the blood oxygen signal of the sleep time of the target user by means of the monitoring system; S20, preprocessing the magnetocardiogram signal and noise reduction processing, screening the available cardiomagnetic signal time period and obtaining the intermediate cardiomagnetic signal; S30, using the QRS wave detection method and the cardiopulmonary coupling algorithm to extract the intermediate cardiomagnetic signal, and obtaining the characteristic signal used to reflect the sleep quality of the target user; S40. Perform preprocessing and eigenvalue extraction on the blood oxygen signal and use a pre-trained machine learning model to screen the time period that can reflect the respiratory event of the target user; S50. Based on the eigenvalue and characteristic signal of the blood oxygen signal within the filtered time period , to obtain the sleep quality evaluation result of the target user. The above method can time-sequentially monitor respiratory events, and improve detection accuracy and reliability.

Description

technical field [0001] The invention relates to the field of biomedical technology, in particular to a magnetocardiogram-based sleep quality monitoring system and monitoring method. Background technique [0002] Sleep-disordered breathing (SDB) is a disease characterized by snoring at night and drowsiness during the day. Because the patient will be accompanied by repeated breathing stops during snoring, it will cause repeated awakening of the cerebral cortex, causing the oxygen content in the blood to decrease. Reduced, resulting in chronic hypoxia of vital organs such as the brain and heart. And when the human body is chronically hypoxic for a long time, it may induce high blood pressure, arrhythmia, myocardial infarction, angina pectoris, and more seriously, sudden death. If sleep-disordered breathing (SDB) in children is not diagnosed and effectively intervened in time, it will lead to a series of serious complications, such as abnormal maxillofacial development (adenoid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/00A61B5/243
CPCA61B5/4815A61B5/14542A61B5/243A61B5/7203A61B5/7225A61B5/7264
Inventor 宁晓琳贾一凡高阳向岷梁晓钰吴焕琦马宇宇
Owner HANGZHOU INNOVATION RES INST OF BEIJING UNIV OF AERONAUTICS & ASTRONAUTICS
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