An apnea detection system

Abstract

The invention discloses a detection method of an apnea detection system, which comprises the following steps: an electromagnetic wave detection module collects the breathing signal of a subject to be tested and sends it to the breathing detection module; after the breathing detection module obtains the breathing signal collected by the electromagnetic wave detection module, the breathing signal is Carry out analysis and determine whether breathing is suspended, and trigger an alarm module to issue an alarm when it is determined to be apnea; the alarm module issues an alarm when triggered by the breathing detection module. The electromagnetic waves emitted by the electromagnetic wave detection module of the present invention can penetrate non-metallic media to detect respiratory signals, and can be detected without direct contact with the human body, without restricting the freedom of the subject to be tested; based on time-frequency analysis and spectrum analysis technology, using respiratory signals It has a periodic nature. Time-frequency analysis is performed on the respiratory signal to estimate the Doppler instantaneous frequency of breathing, and judge whether the Doppler instantaneous frequency of breathing is periodic, so as to judge whether breathing exists, with small amount of computation and fast detection speed .

Description

technical field [0001] The invention relates to the technical field of respiration detection, in particular to a detection method of an apnea detection system. Background technique [0002] During sleep, the complete cessation of oronasal airflow for more than 10 seconds is considered apnea. When sleep apnea occurs, there is less oxygen in the blood and the body is starved of oxygen. If this phenomenon occurs frequently, that is, more than 5 times per hour or more than 30 times of pauses during sleep in 7 hours, if the phenomenon of apnea is not found for many years and is not treated effectively, it will cause serious consequences, and a serious problem may occur. A series of pathological and physiological changes. Therefore, monitoring sleep apnea is essential to pay attention to human health. [0003] PSG and wrist actigraphy are commonly used to monitor sleep. Wrist actigraphy can be connected to any limb, and is based on the same acceleration principle to obtain bod...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing technology for detecting apnea is complex in operation, which limits the freedom of the monitor, and requires analysis based on long-term monitoring data to obtain the detection result, which is not easy for daily family monitoring

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