Method and device for detecting heart rates and blood oxygen saturation of human bodies

A detection method and saturation technology, applied in the measurement of pulse rate/heart rate, diagnostic record/measurement, medical science, etc., can solve the problems of emotional instability of the tester, contact or injury, and affecting the detection results

Inactive Publication Date: 2019-03-22
EAST CHINA JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the problem that the current human heart rate and blood oxygen saturation detection method is contacted or injured during the detection process, causing the emotional instability of the tester, which in turn affects the detection result.

Method used

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  • Method and device for detecting heart rates and blood oxygen saturation of human bodies
  • Method and device for detecting heart rates and blood oxygen saturation of human bodies
  • Method and device for detecting heart rates and blood oxygen saturation of human bodies

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] figure 1 A schematic flow chart of the human heart rate and blood oxygen saturation detection method provided in Embodiment 1 of the present application; refer to figure 1 , the detection methods of human heart rate and blood oxygen saturation provided by this application include:

[0056] S101, using face tracking technology to determine whether the face moves;

[0057] S102. If the face does not move, collect image information of the forehead region of the face;

[0058] It should be noted that: Here, it is necessary to collect the image information of the forehead area of ​​the face for a predetermined period of time; when it is judged that the face is not moving, start to collect, if it is judged that the face starts to move during the collection and process, then stop this collection, with When the face stops moving, the next collection starts.

[0059] Wherein, the collected image information may be in RGB color mode.

[0060] Specifically, the collection device...

Embodiment 2

[0070] figure 2 A schematic flow chart of a part of the method for detecting human heart rate and blood oxygen saturation provided in Embodiment 2 of the present application; refer to figure 2 And embodiment one, in the method for detecting human heart rate and blood oxygen saturation provided by the present application, preprocessing the RGB grayscale mean data curves of the three channels respectively includes:

[0071] S201, respectively normalize the RGB grayscale mean data curves of the three channels;

[0072] What needs to be understood is: the normalization method has two forms, one is to change the number into a decimal between (0, 1), and the other is to change a dimensioned expression into a dimensionless expression. It is mainly proposed for the convenience of data processing. It is more convenient and faster to map data to the range of 0 to 1 for processing, and it should be included in the category of digital signal processing. Normalizing the RGB grayscale a...

Embodiment 3

[0081] image 3 Part of the flow diagram of the human heart rate and blood oxygen saturation detection method provided in Embodiment 3 of the present application; refer to image 3 With the above-mentioned embodiments, the RGB grayscale mean value data curves of two channels selected in the human heart rate and blood oxygen saturation detection method provided by the present application specifically include:

[0082] S301, acquiring the light wavelength corresponding to the RGB grayscale average data curve of each channel;

[0083] S302, selecting a wavelength of light having a similar absorption coefficient for oxyhemoglobin and reduced hemoglobin as the first wavelength of light;

[0084] S303, selecting the light wavelength with the largest difference in absorption coefficient between oxyhemoglobin and reduced hemoglobin as the second light wavelength;

[0085] S304. Select the RGB average grayscale data curve of the channel corresponding to the first optical wavelength a...

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Abstract

The invention belongs to the correlative technical field of human body state detection, and particularly relates to a method and a device for detecting heart rates and blood oxygen saturation of humanbodies. The method for detecting the heart rates and the blood oxygen saturation of the human bodies includes judging whether human faces move or not by the aid of human face tracking technologies; acquiring image information of forehead regions of the human faces if the human faces do not move; acquiring RGB (red, green and blue) grayscale mean value data curves of three channels on the basis ofthe acquired image information; preprocessing the RGB grayscale mean value data curves of the three channels; determining the heart rates of the human bodies on the basis of the RGB grayscale mean value data curves of the three channels; selecting the RGB grayscale mean value data curves of two channels; determining blood oxygen saturation concentration of the human bodies on the basis of the selected RGB grayscale mean value data curves of the two channels.

Description

technical field [0001] The applicant applies for the related technical field of human body state detection, and specifically relates to a method and device for detecting human heart rate and blood oxygen saturation. Background technique [0002] With the development of medical technology and the advancement of science and technology, there are more and more ways to treat diseases and detect human health status. At the same time, new requirements are put forward for the accuracy of detection methods and devices. [0003] Human heart rate and blood oxygen saturation detection is a commonly used detection. At present, the detection method of human heart rate and blood oxygen saturation is mainly a contact detection method, that is, the detection instrument touches the human skin for detection. There is also a blood oxygen saturation detection method: blood detection method. In the above-mentioned methods, all will cause contact or injury to the detector. [0004] However, f...

Claims

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Application Information

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IPC IPC(8): A61B5/0205A61B5/1455
CPCA61B5/0205A61B5/024A61B5/14551A61B5/7203A61B5/725
Inventor 张跃进喻蒙胡勇展爱云李光辉李波
Owner EAST CHINA JIAOTONG UNIVERSITY
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