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Non-contact apnea detection device and non-contact apnea detection method

An apnea, non-contact technology, applied in the evaluation of respiratory organs, diagnostic recording/measurement, medical science, etc., can solve the problems of inability to correctly determine the state of apnea, low detection accuracy, etc.

Pending Publication Date: 2020-08-18
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, in the existing known video monitoring technology for detecting apnea, there is a problem of low detection accuracy, and even if the breathing state during sleep can be simply detected, it is still impossible to correctly measure the different types of breathing that occur during sleep suspended state

Method used

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  • Non-contact apnea detection device and non-contact apnea detection method

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] The non-contact apnea detection device of the present invention includes a video image acquisition unit, a video amplifier, a ROI (region of interest) selection device, a respiration rate and respiration signal extraction device, a chest and abdomen motion detection unit, a respiration state determination unit and a notification device ,Such as figure 1 shown.

[0031] The video image collection unit is a camera, which is used for video collection of the subject. Fix the camera within an appropriate distance from the subject to ensure that the image contains the subject's chest and abdomen. If you shoot at night without light, you can use an ordinary camera with night vision function. The video image (video) captured by the camera is input to the video amplifying device.

[0032] The video amplifying device is used for amplifying video images. Sin...

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Abstract

The invention discloses a non-contact apnea detection device and method. According to the apnea detection device, the method comprises the steps of shooting a breathing video containing the chest andthe abdomen of a detected person in a sleeping or quiet state through a camera; performing spatial pyramid decomposition on the video; decomposing a pyramid layer of an interested area, respectively carrying out time domain band-pass filtering on the decomposed pyramid layer to obtain a frequency band related to thorax and abdomen breathing actions, amplifying a signal of the frequency band, extracting brightness information of pixel points of the amplified interested area, calculating a breathing rate, and judging normal breathing and abnormal breathing states by setting a dynamic threshold value of the brightness information. Therefore, all apnea states of the examinee in the shot video can be correctly judged. According to the invention, the respiratory rate of the photographed person can be correctly detected through the photographed video image in the sleep or quiet state of the human body, and whether apnea occurs in the video recording period or not can be correctly judged.

Description

technical field [0001] The present invention relates to a non-contact apnea detection device and method for monitoring the breathing state of a sleeping subject in a non-contact manner, and judging the apnea state that occurs during sleep, that is, the so-called apnea syndrome . Background technique [0002] Sleep apnea syndrome is a common sleep-related respiratory disease that seriously threatens people's sleep health. [0003] Medically, sleep apnea syndrome is defined as the cessation of mouth and nose airflow for more than or equal to 10 seconds during sleep. The apnea-hypopnea index (AHI) is commonly used to evaluate its severity, that is, the average number of times of apnea plus hypopnea per hour during sleep. There are three grades: mild (5≤AHI<15 times), moderate (15≤AHI<30 times) and severe (≥30 times). Medically, according to the cause of sleep apnea, sleep apnea syndrome can be divided into three types: obstructive sleep apnea (OSA), central sleep apnea ...

Claims

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Application Information

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IPC IPC(8): A61B5/08A61B5/11A61B5/113A61B5/00
CPCA61B5/0816A61B5/1135A61B5/1128A61B5/4818A61B5/746
Inventor 张弛刘昱鑫田婧
Owner BEIHANG UNIV
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