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Blood oxygen detection device based on green light, blood oxygen detection method thereof and medium

A technology of blood oxygen detection and green light, which is applied in diagnostic recording/measurement, medical science, sensors, etc., can solve problems such as low signal-to-noise ratio, inaccurate blood oxygen detection, and AC signal is susceptible to interference

Pending Publication Date: 2022-02-22
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current detection scheme, when the human blood perfusion rate (or perfusion rate, Perfusion Index, PI) is low, the signal-to-noise ratio of the red light and infrared AC (Alternating Current, AC) signal is low, and the AC signal is susceptible to interference , In addition, changes in ambient light or slight movement may cause inaccurate blood oxygen detection

Method used

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  • Blood oxygen detection device based on green light, blood oxygen detection method thereof and medium
  • Blood oxygen detection device based on green light, blood oxygen detection method thereof and medium
  • Blood oxygen detection device based on green light, blood oxygen detection method thereof and medium

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Effect test

Embodiment 1

[0074] Figure 4 According to an embodiment of the present application, a flowchart of a blood oxygen detection method is shown. exist Figure 4 In the shown embodiment, after the watch 200 obtains the PPG signal through the PPG sensor 250 , it performs quality analysis and blood oxygen saturation calculation on the PPG signal through its own controller 210 . Specifically, such as Figure 4 shown, including:

[0075] 401: After the watch 200 detects that the user clicks the blood oxygen detection button on the watch 200, the blood oxygen detection function is started.

[0076] It can be understood that in some embodiments, depending on the settings of the watch 200 in the actual product, the blood oxygen detection function can also be enabled in other ways, for example, by voice command or by clicking on the corresponding application (Application, APP) on the mobile phone 100 Use the function buttons on the display interface to start the blood oxygen detection.

[0077] 4...

Embodiment 2

[0214] Figure 14 According to an embodiment of the present application, a flowchart of a blood oxygen detection method is shown. exist Figure 14 In the shown embodiment, after the watch 200 acquires the PPG signal, it sends the PPG signal to the mobile phone 100, and the mobile phone 100 analyzes the quality of the PPG signal and calculates the blood oxygen saturation. Specifically, such as Figure 14 shown, including:

[0215] 1401-1402: are completely the same as the processes 401-402 in the first embodiment, and will not be repeated here.

[0216] 1403: According to the blood oxygen detection mode selected by the user, the watch 200 turns on the light source in the corresponding mode for detection and sends a PPG signal to the mobile phone 100 .

[0217] When the user selects the green light detection mode, the controller in the watch 200 executes the same steps as the above-mentioned process 403 , which will not be repeated here. In addition, the watch 200 transmits...

Embodiment 3

[0235] Figure 15 According to the embodiment of this application, a blood oxygen detection system 1501 is shown, including a signal preprocessing module 1502, a signal filtering module 1503, an AC signal peak raising module 1504, a signal quality judgment module 1505, an R value calculation module 1506, and a blood oxygen calculation module 1507 and blood oxygen smoothing processing module 1508. For the blood oxygen detection process performed by the blood oxygen detection system 1501 in this embodiment, reference may be made to steps 401 to 411 in Embodiment 1.

[0236] in,

[0237] The signal preprocessing module 1502 is used to delete the abnormal data in the acquired PPG signal, and its function is the same as that of the abnormal data deletion related to the PPG signal preprocessing in the first embodiment, which will not be repeated here. Wherein, for the acquisition of the PPG signal, refer to steps 401-404 and 406-407 in the first embodiment.

[0238] The signal fi...

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Abstract

The invention relates to the technical field of intelligent wearable devices, in particular to a blood oxygen detection device based on green light, a blood oxygen detection method thereof and a medium, electronic equipment comprises a photo Plethysmo Graphy (PPG) sensor, and the PPG sensor comprises a green light source, a red light source, an infrared light source and a photoelectric sensing element; the method comprises the following steps: acquiring a PPG signal obtained by performing blood oxygen detection by using a PPG sensor, wherein the PPG signal comprises green light data obtained by performing blood oxygen detection by using a green light source; judging whether the quality of the PPG signal meets a blood oxygen detection condition or not based on the green light data; under the condition that the quality of the PPG signal meets the blood oxygen detection condition, calculating the blood oxygen saturation through the PPG signal. Whether the quality of the PPG signal detected by the PPG sensor meets the blood oxygen calculation condition or not is judged by means of the detected green light signal, so that the accuracy of blood oxygen saturation detection is improved. And moreover, the user can select the blood oxygen detection mode according to own requirements, so that the use experience of the user is also improved.

Description

technical field [0001] The invention relates to the technical field of smart wearable devices, in particular to a green light-based blood oxygen detection device, a blood oxygen detection method and a medium thereof. Background technique [0002] Blood oxygen saturation (Oxygen saturation, S p o 2 ) (also known as blood oxygen) refers to the percentage of the amount of hemoglobin (also known as oxyhemoglobin) actually combined with oxygen in the blood to the total amount of hemoglobin in the blood. Deoxyhemoglobin, thiohemoglobin, carboxyhemoglobin. Blood oxygen is an important physiological parameter of the respiratory cycle. It is of great significance in the fields of plateau hypoxia early warning, respiratory disease detection, and hypoxia early warning. Generally speaking, blood oxygen mainly refers to arterial blood oxygen. [0003] There are two main categories of current blood oxygen detection methods, namely, destructive testing and nondestructive testing. Amo...

Claims

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Application Information

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IPC IPC(8): A61B5/1455A61B5/0205A61B5/00
CPCA61B5/14551A61B5/14542A61B5/0205A61B5/02427A61B5/02433A61B5/681A61B5/6803A61B5/6815A61B5/6826A61B5/6824A61B5/6814
Inventor 叶际隆杨斌李玥季映羽王朔
Owner HUAWEI TECH CO LTD
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