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Detection system for improving accuracy of measuring packed cell volume accuracy and operating control method

A technology for a hematocrit and detection system is applied in the field of detection systems for improving the accuracy of measuring hematocrit, and can solve the problems of difficult to achieve precise measurement, complicated design, occupation of central processing resources, etc., and achieve a simple and reliable detection system. , Improve the accuracy and achieve the effect of precise measurement

Inactive Publication Date: 2013-06-12
EDAN INSTR
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Problems solved by technology

If the central processing internal DAC method is used to generate a sine wave, the refresh rate is too high (to generate this 100KHz sine wave calculation, using the DAC method, drawing at least 50 points in each cycle can draw a relatively smooth sine wave, that is The refresh rate of the DAC reaches at least 5Msps, and it must be refreshed every 0.2us), which greatly occupies the resources of the central processing, causing other programs to fail to run, which is also not advisable
[0009] In addition, traditional HCT detection devices are complex in design and poor in reliability
[0010] Therefore, in summary, traditional HCT measurement devices are difficult to achieve precise measurement

Method used

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  • Detection system for improving accuracy of measuring packed cell volume accuracy and operating control method
  • Detection system for improving accuracy of measuring packed cell volume accuracy and operating control method
  • Detection system for improving accuracy of measuring packed cell volume accuracy and operating control method

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Embodiment Construction

[0032] Such as figure 1 and figure 2As shown, the present invention discloses a detection system for improving the accuracy of measuring hematocrit, including a central processing unit 10, an excitation source unit 70, a blood sample unit 40, a precision measurement circuit unit 50, and a signal acquisition unit 60. The central The processing unit 10 is connected to the excitation source unit 70 and is used to output control commands to the excitation source unit 70. The excitation unit 70 is used to generate a sine wave. The output terminal of the excitation source unit 70 is connected to the blood sample The input end of the unit 40 is connected, the output end of the blood sample unit 40 is connected to the input end of the precision measurement circuit unit 50, the blood sample unit 40 is used to collect the blood sample impedance signal; the precision measurement circuit unit 50 is used to complete After the signal is amplified and converted into an effective value, the...

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Abstract

The invention provides a detection system for improving the accuracy of measuring the packed cell volume and an operating control method. The detection system for measuring the packed cell volume comprises a central processing unit, an excitation source unit, a blood sample unit, a precision measurement circuit unit and a signal acquisition unit. The detection system provided by the invention has the beneficial effects that a sine wave is generated through the excitation source unit, the central processing unit is used for controlling, and the measurement accuracy of HCT is improved; the detection system provided by the invention is simple and reliable, and the precision measurement is realized; and the measuring accuracy is higher than the traditional measuring technique and can achieve 0.2%. As the detection system is provided with a self-detection function, the measurement is very reliable, and no circuit fault is generated to lead to wrong measured data.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a detection system and an operation control method for improving the accuracy of measuring hematocrit. Background technique [0002] HCT (hematocrit) is hematocrit, which is a very important parameter in the field of blood analysis. After anticoagulant treatment, the blood can be divided into two parts by centrifugation, plasma and blood cells. If the blood is centrifuged in a special test tube (Wenten tube) according to the specified time and speed, the red blood cells will be completely compacted at the bottom of the test tube, and the red blood cells will be in close contact with each other, and all the plasma will be eliminated as much as possible. At this time, the plasma will be completely squeezed out on top of the blood cells. At this time, the percentage of red blood cells in the whole blood is the hematocrit we want to get, that is, the volume (or percentage) of the comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/05
CPCA61B5/14535G01N15/05G01N33/49G01N2015/055G01N15/0656
Inventor 向小飞卢银辉赵志翔
Owner EDAN INSTR
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