Sleep staging method based on BCG (ballistocardiogram) signal

Abstract

The invention provides a sleep staging method based on a BCG (ballistocardiogram) signal. The method comprises the steps as follows: extracting a heart rate signal, a pulse signal and a respiration signal from the BCG signal acquired in advance, and calculating heart rate variability (HRV) and cardiopulmonary coupling (CPC) power spectrum according to the heart rate signal, the pulse signal and the respiration signal; acquiring change trend signals of frequency domain characteristics of the HRV and the CPC power spectrum, converting the change trend signals of the frequency domain characteristics of the HRV and the CPC power spectrum into multichannel image characteristics, performing characteristic extraction of the HRV and the CPC power spectrum, and extracting characteristic vectors according to time domain signals of the extracted HRV and CPC power spectrum; and training sleep staging results corresponding to HRV and CPC power spectrum density signals according to the multichannelimage characteristics and characteristic vectors. The sleep staging method combines the HRV and the CPC power spectrum to distinguish sleep stages and has higher adaptability and accuracy.

Description

technical field [0001] The invention belongs to the technical field of sleep monitoring, in particular to a sleep staging method based on BCG signals. Background technique [0002] With the improvement of living standards, people's demand for health is increasing. As an essential activity in people's daily life, sleep is crucial to human health. More and more people need to monitor and analyze their sleep status. However, medical sleep monitoring instruments are complex and expensive to operate, and are not suitable for ordinary household use, so portable sleep analysis equipment is widely popularized. [0003] As a common household sleep analysis device, the sleep mattress does not need to touch the body of the tester, thus avoiding the discomfort caused by intrusion to the user. The BCG (Ballistocardiogram, ballistocardiogram) signal collected by the fretting mattress is a mixed signal containing various signals and noises, and also contains useful signal components such...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of low correct rate and poor staging effect of the above-mentioned existing sleep staging methods or at least partially solve the above problems, an embodiment of the present invention provides a sleep staging method based on BCG signals

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