Carbon oxygen saturation detection device and method
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A carbon-oxygen saturation and detection device technology, applied in diagnostic recording/measurement, medical science, sensors, etc., can solve the problems of non-invasive and real-time monitoring of carbon-oxygen saturation, non-invasive carbon-oxygen saturation, etc., to avoid errors, Increased stability, wide range of effects
Inactive Publication Date: 2019-07-26
HENAN UNIVERSITY
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[0004] In order to solve the problem that the carbon and oxygen saturation in the human body cannot be monitored non-invasively and in real time in the prior art, the present invention provides a carbon and oxygen saturation detection device and method, which realizes the non-invasive detection of the carbon and oxygen saturation in the arterial blood of the human body tissue and real-time monitoring
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Embodiment 1
[0055] Embodiment 1: as Figure 1 ~ Figure 4 As shown, a carbon-oxygen saturation detection device includes a detection unit, a conversion unit, a processor and a display screen 5. The detection unit includes a detector and a plurality of light sources of different wavelengths. The detector detects and receives light emitted by the light source through tissue The light intensity signal reflected by the middle artery blood, and send the light intensity signal to the conversion unit;
[0056] The conversion unit converts the light intensity signal into an electrical signal, and sends the electrical signal to the processor after processing;
[0057] The processor is used to analyze and calculate the electrical signal to obtain the carbon and oxygen saturation in the final tissue;
[0058] The detection device also includes a power supply 6 for providing a power supply voltage VCC for the detection device.
[0059] As a preferred embodiment, the detector is a photodetector 3; th...
Embodiment 2
[0073] Embodiment 2: as Figure 5-6 As shown, a carbon-oxygen saturation detection method based on a carbon-oxygen saturation detection device comprises the following steps:
[0074] First of all, it should be noted that the calculation formula of the carbon and oxygen saturation is as follows:
[0075]
[0076] Among them, SPCO represents carbon oxygen saturation, C HbCO Indicates the concentration of carboxyhemoglobin, C HbO2 Indicates the concentration of oxyhemoglobin, C Hb Indicates the concentration of reduced hemoglobin.
[0077] Step 1: The three wavelengths are λ 1 , lambda 1 and lambda 3 The LED light source 4 sequentially transmits light signals to the tissue according to the set time interval, and the photodetector 3 receives the light intensity signal and sends it to the analog front end 2;
[0078] The light intensity signal emitted by the light source to the tissue includes two types: the light intensity signal when all the arterial blood flows back to...
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Abstract
The invention relates to a carbon oxygen saturation detection device which comprises a detection unit, a conversion unit, a processor and a display screen. The detection unit comprises a detector anda plurality of light sources of different wavelengths, wherein the detector detects the light intensity signals of the light emitted by the receiving light source reflected by the arterial blood in the tissues and sends the light intensity signals to the conversion unit; the conversion unit processes the light intensity signals and sends the signals to the processor; the processor analyzes the electrical signals to obtain carbon oxygen saturation. The invention also relates to a carbon oxygen saturation detection method which comprises the steps that an LED light source sequentially emits light signals to the tissues, and a photoelectric detector receives the light intensity signals and sends the light intensity signals to an analog front end; the analog front end receives the light intensity signals, converts the light intensity signals into voltage signals, filters and amplifies the voltage signals, converts the voltage signals into discrete digital carbon-oxygen signals, and sends the discrete digital carbon-oxygen signals to a single chip microcomputer; the single chip microcomputer calculates the saturation of carbon and oxygen. The carbon oxygen saturation detection device realizes non-invasive and real-time monitoring of carbon and oxygen saturation in human arterial blood.
Description
technical field [0001] The invention relates to the technical field of carbon and oxygen monitoring, in particular to a carbon and oxygen saturation detection device and method. Background technique [0002] Carboxyhemoglobin is a derivative of hemoglobin in human blood, which is the product of the combination of carbon monoxide and hemoglobin. In terms of binding capacity, the binding capacity of carbon monoxide and hemoglobin is 200-300 times that of oxygen and hemoglobin. In terms of dissociation rate, the dissociation rate of carboxyhemoglobin is only 1 / 3600 of that of oxyhemoglobin. When the human body inhales a large amount of carbon monoxide, carbon monoxide replaces oxygen and combines with hemoglobin, causing the oxygen-carrying capacity of hemoglobin to drop sharply, resulting in insufficient oxygen content in the blood, resulting in carbon monoxide poisoning. The severity of carbon monoxide poisoning is directly proportional to the carbon oxygen saturation. The c...
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