Portable hemoglobin solution measurement system and measurement method thereof

Abstract

The invention discloses a portable hemoglobin solution measurement system and a measurement method thereof. The measurement system comprises an ARM control unit, a stable light source generation circuit, a cuvette, a photoelectric conversion circuit and an A / D converter. The measurement system and the measurement method have the advantages that: according to the absorption characteristic of the cyanomethemoglobin reaction solution to lights with different wavelengths, the ARM control unit controls the stable light source generation circuit to automatically divide time and switch to generate red and green lights and compare the light intensities of the red light and the green light after transmitting the solution to measure the concentration of cyanomethemoglobin reaction solution; the shortcoming that the traditional apparatus adopting a single-wavelength method needs to measure the blank solution to compare and correct is overcome, so the measurement efficiency is improved greatly and the operation is more simple; and errors caused by the external environment, operators and the like during two times of measurement are avoided, so the measurement precision is improved effectively.

Description

technical field [0001] The invention relates to a concentration measurement technology of hemoglobin solution, in particular to a portable hemoglobin solution measurement system and a corresponding measurement method. Background technique [0002] Hemoglobin is the main component of red blood cells in human blood. It has the characteristics of being easily combined with oxygen and carbon dioxide. It is the carrier of the respiratory system. It can transport the oxygen inhaled by the human body from the lungs to the tissues of the whole body, and then transport the carbon dioxide in the tissues. After reaching the lungs, it is exhaled out of the body. However, when the hemoglobin concentration (HGB) is lower than the normal value, anemia will occur. Anemia may cause pale skin and mucous membranes, rapid heartbeat, chest tightness and shortness of breath. Therefore, hemoglobin has a great relationship with human health. People should know their hemoglobin concentration timely...

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Problems solved by technology

[0004] At present, there are many kinds of hemoglobin solution measuring instruments at home and abroad, such as Sweden’s Hemoglobin hemoglobin measuring instrument abroad, which mainly uses the reagent strip method to test the hemoglobin concentration. This instrument is convenient for blood collection, does not need to be diluted, and the test is simple. It is very suitable for athletes The test is carried out on the training site, but it is expensive, which makes it impossible for small and medium-sized hospitals to purchase in batches. In addition, the price of the reagent strips used is also high, and they are one-time consumables, which undoubtedly increases the burden on patients; domestic companies such as Shanghai Precision Scientific Instrument Co., Ltd. analyzed The 5020 type hemoglobin meter produced by the General Instrument Factory adopts the single-wavelength method, which uses light of a certain wavelength to pass through a cuvette equipped with a blank solution (standard diluent of ferric cyanide), and then uses light of the same wavelength to pass through the cuvette. After the cuvette with the hemoglobin reaction solution (the hemoglobin reaction solution is the solution generated by the reaction of ferric cyanide and the diluted hemoglobin solution), pass through the cuvette with the blank solution and the cuvette with the hemoglobin reaction solution respectively. The last two light intensities are analyzed to obtain the concentration of the measured solution. This instrument has a short measurement time, but it needs an external diluter to dilute the blood 250 times, and then dilute the diluted blood with ferric cyanide Carrying out the hemolysis reaction as the measured solution causes the volume of this instrument to be very large, and it takes a long time to dilute and hemolyze at the same time, so that the time for actually measuring a single blood sample is greatly increased (about 45 seconds / sample); on the other hand, due to The single-wavelength method needs to measure the light intensity behind the cuvette equipped with blank solution to carry out contrast correction, resulting in complicated operation and low measurement efficiency; in addition, the final measurement result is susceptible to external factors (such as the operator) due to two measurements. Skill level, etc., the impact of external dust, etc.) directly affects the measurement accuracy

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