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Non-contact automatic blood oxygen saturation degree measurement system and measurement method

A non-contact, measurement system technology, applied in blood characterization devices and other directions, can solve problems such as being susceptible to motion artifacts, and achieve the effect of overcoming the influence of motion artifacts and high measurement accuracy

Inactive Publication Date: 2013-08-28
TIANJIN DIANKANG TECH
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  • Claims
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Problems solved by technology

To date, almost all R&D attempts to automate non-contact oximetry measurements have been non-automated and susceptible to motion artifacts during use

Method used

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  • Non-contact automatic blood oxygen saturation degree measurement system and measurement method
  • Non-contact automatic blood oxygen saturation degree measurement system and measurement method
  • Non-contact automatic blood oxygen saturation degree measurement system and measurement method

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Embodiment Construction

[0031] The specific implementation, structure, features and effects provided by the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0032] Such as figure 1 Shown is a system structure diagram of the non-contact automatic blood oxygen saturation measurement system of the present invention. The system includes a video acquisition module 101 , a primary color component separation module 102 , an ROI extraction module 103 , a time-varying signal generation module 104 , a filter denoising module 105 and a signal calibration analysis module 106 .

[0033] Such as figure 2 As shown, the non-contact automatic blood oxygen saturation measuring method of the present invention includes the following processes:

[0034] Adopt the ordinary camera with automatic gain function or the higher special-purpose camera of resolution to gather the color video that comprises people's wrist, step 201; Carry out frame pr...

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Abstract

The invention discloses a non-contact automatic blood oxygen saturation degree measurement system and measurement method. Measurement of a blood oxygen saturation degree is carried out through video shooting. The measurement system comprises a video collection module, a primary color component separation module, an ROI extraction module, a time-varying signal generation module, a filtering and noise reduction module and a signal calibration and analysis module. The measurement method comprises the steps: collecting a color video recording information of the wrist portion of a human body, extracting a red component image of the color video, extracting a region which includes the artery as ROI images, extracting a mean value of all pixels of each frame of ROI image as a feature value of the frame of ROI image, generating a time-amplitude waveform, conducting filtering and noise reduction on a waveform signal, conducting normalization and calibration on the filtered signal, then finding wave crests and wave troughs of the signal in a waveform period, obtaining a specific value of a wave crest value and a wave trough value, and estimating the blood oxygen saturation degree (SpO2) through the specific value. A non-contact remote physiological signal detection method is adopted, motion artifact impact in the video recording is overcome, measurement precision is high, and multiple people can be measured simultaneously.

Description

technical field [0001] The invention relates to electronic health station equipment, in particular to a system and method for automatically measuring blood pressure. Background technique [0002] Traditional blood oxygen saturation measurement methods are divided into manual measurement and automatic measurement. Among them: manual measurement requires human blood collection first, and then uses a blood gas analyzer for electrochemical analysis. According to the measured blood oxygen partial pressure PO 2 Calculating blood oxygen saturation is cumbersome and cannot be continuously monitored. The automatic measurement method is realized by a variety of measuring equipment, such as a finger cot-type photoelectric sensor: when measuring, the sensor needs to be placed on the human finger to ensure that the sensor and the measured body are kept in contact, and the finger is used as a transparent container for hemoglobin. 660nm red light and 940nm near-infrared light are used as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/145
Inventor 欧阳健飞徐可欣
Owner TIANJIN DIANKANG TECH
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