Sleep apnea monitoring system based on millimeter-wave radar

Abstract

The invention discloses a sleep apnea monitoring system based on a millimeter-wave radar. The sleep apnea monitoring system comprises a millimeter-wave radar module, a signal processing module, an MCUprocessor, a deep learning recognition system and a rear-end display system. The system is characterized in that the millimeter-wave radar module is connected with the MUC processor, transmits linearfrequency modulation continuous wave signals in the working process according to the Doppler radar detection principle, receives reflected echo signals and transmits the signals to the signal processing module; the signal processing module is connected with the MCU, performs signal processing such as demodulation and amplification on echo signals to obtain vital sign monitoring data of a user inthe sleeping process, and transmits the signals to the deep learning recognition system; and the deep learning recognition system filters the received signals, and filters noise and interference through a band-pass filter which is generated by cascading a low-pass digital filter and a high-pass digital filter and has the pass band response of 2-50Hz according to the frequency of the signals.

Description

technical field [0001] The invention relates to the field of physiological signal processing, in particular to a sleep apnea monitoring system and method based on millimeter wave radar. Background technique [0002] Obstructive Sleep Apnea / Hypopnea Syndrome (OSAHS) is a sleep breathing disease closely related to upper airway obstruction, airway structural narrowing and upper airway muscle tone reduction, accompanied by obvious Apnea symptoms, clinically known as "snoring". The current global incidence of OSAHS is relatively high, and the incidence rate of men is greater than that of women (the prevalence rate of adult men is 3% to 7%, and that of adult women is 2% to 5%). OSAHS is on the rise, often accompanied by snoring, disordered sleep structure, frequent occurrence of decreased blood oxygen saturation, and daytime sleepiness. It is an independent risk factor for hypertension and coronary heart disease, which seriously affects the quality of life of patients. Frequent ...

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Problems solved by technology

Because the monitored physiological parameters are very comprehensive and absolutely authoritative, but PSG is expensive, and the examination requires the examiner to monitor in real time on the hospital bed for a whole night. Too many lead circuits themselves have affected sleep, and they are not suitable for the sleeping environment. and other psychological pressure, which will affect the accuracy of diagnostic results to a certain extent

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