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A method for detecting blood oxygen saturation

A detection method and saturation technology are applied in the field of blood oxygen saturation detection, which can solve the problems of complex blood oxygen saturation detection technology and insufficient accuracy, and achieve the effects of reducing random interference and high detection accuracy.

Active Publication Date: 2015-09-16
SOLARIS MEDICAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0038] The technical problem to be solved by the present invention is to provide a blood oxygen saturation detection method to solve the problems in the prior art that the blood oxygen saturation detection technology is complicated and the accuracy is not high enough

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  • A method for detecting blood oxygen saturation
  • A method for detecting blood oxygen saturation
  • A method for detecting blood oxygen saturation

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Experimental program
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Embodiment Construction

[0057] like figure 1As shown, a blood oxygen saturation detection system provided in this specific embodiment includes sequentially connected: signal acquisition device, notch filter, low-pass filter, adaptive normalization device, FFT (Fast Fourier Transform, fast Fourier transform) device, R value calculation device, Kalman filter device and blood oxygen saturation calculation device; wherein the notch filter and the low-pass filter can be collectively called the pre-processing device.

[0058] like figure 2 As shown, a blood oxygen saturation detection method provided in this specific embodiment includes the following steps:

[0059] 1. Signal acquisition: the red light detection signal Red and the infrared light detection signal Ir carrying the blood oxygen signal are collected through the signal acquisition device.

[0060] 2. Preprocessing, that is, preprocessing the red light detection signal Red and the infrared light detection signal Ir through a notch filter and a...

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Abstract

The invention discloses a system and a method for detecting blood oxygen saturation. The system for detecting the blood oxygen saturation comprises a signal acquisition device, an adaptive normalization device, a FFT (Fast Fourier Transform) device, an R value calculation device and a blood oxygen saturation calculation device, wherein the FFT device is used for transforming detection data from a time domain into a frequency domain by FFT. The method for detecting the blood oxygen saturation comprises the following steps of: acquiring a signal first and then performing pre-processing and adaptive normalization processing; performing FFT processing and transforming the detection data from the time domain into the frequency domain; and finally calculating the R value and calculating the blood oxygen saturation according to the R value. In a system for detecting the blood oxygen saturation by using the method for detecting the blood oxygen saturation of the technical scheme of the invention, the calculation is simpler because the blood oxygen saturation is calculated from the frequency domain, and the random interference can be reduced and therefore the detection precision is higher.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a blood oxygen saturation detection technology, in particular to a blood oxygen saturation detection method. Background technique [0002] Non-invasive blood oxygen saturation detection is based on the principle that the light absorption of arterial blood changes with arterial fluctuations. In the transmission blood oxygen saturation detection, when the arterial blood vessels in the light-transmitting area pulse, the light absorption of the arterial blood will change accordingly, which is called the pulsation component or AC (AC); while the skin, muscle, bone and venous blood The absorption of light by other tissues is constant, called direct current (DC). If the attenuation due to scattering, reflection and other factors is ignored. According to Beer-Lambert Law (Beer-Lambert Law), [0003] I out = I ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/1455
Inventor 胡丽丹王干兵
Owner SOLARIS MEDICAL TECH