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Spectrophotometric detecting method and apparatus , and detecting system

A technology of spectrophotometry and detection methods, which is applied in the direction of measuring devices, immunoassays, and analytical materials, can solve the problems of limited testing speed and achieve high testing efficiency, strong applicability, and simple testing procedures

Active Publication Date: 2012-12-05
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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Problems solved by technology

Therefore, in order to meet the test time requirements of clinical projects in this collection method, the test speed is bound to be limited

Method used

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  • Spectrophotometric detecting method and apparatus , and detecting system
  • Spectrophotometric detecting method and apparatus , and detecting system

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Embodiment Construction

[0035] According to the spectrophotometric detection system of the present embodiment see figure 1 , the polychromatic light emitted by the tungsten-halogen lamp 1 is converged by the lens 2, and the wavelength is selected by the narrow-band filter 4. The selected monochromatic light passes through the cuvette 5 used as a colorimetric vessel for carrying the solution to be tested for colorimetry, and the monochromatic light absorbed by the colorimetric solution is converted into an electrical signal by the photodetector 6, and the electrical signal is detected It is transmitted to the A / D acquisition unit 10 for signal processing such as amplification and analog-to-digital conversion, and then transmitted to the microprocessor 11 for data processing and calculation.

[0036] A plurality of narrowband filters 4 with different wavelengths are evenly distributed on the filter wheel 3 . In a general biochemical analyzer, about ten narrow-band filters 4 with different wavelengths ...

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Abstract

Various embodiments disclose a colorimetric absorbance measurement method and a system for performing the same. The method comprises driving a reaction tray carrying a plurality of reaction cuvettes to rotate at a speed; transferring or rotating filters on a filter wheel to a light path of a light beam, starting from a filter of a first wavelength; and sampling photoelectric data when the light beam has passed through each reaction cuvette in some embodiments. The method ensures consistency in the measurement and synchronization between the calibration and the sample test and reliability of the measurements. Various embodiments simplify data processing and reduce the complexity of the system.

Description

technical field [0001] The invention relates to a spectrophotometric detection method for a biochemical analyzer, a device for realizing the method and a spectrophotometric detection system for a biochemical analyzer, in particular to a detection method and a device for a small biochemical analyzer. Background technique [0002] Biochemical analyzer is a commonly used instrument for clinical diagnosis. It measures various biochemical indicators, such as hemoglobin, cholesterol, muscle liver, etc., through the analysis of serum and other body fluids. The measurement principle of the biochemical analyzer is the Lambert-Beer law, which measures the absorbance of the solution by measuring the degree to which the incident beam of a certain wavelength is absorbed by the solution, and then obtains its concentration by various calculation methods. [0003] The monochromatic light required in the measurement system can be obtained with different monochromators, for example using grat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/17G01N33/50G01N35/04
CPCG01N2021/3174G01N2035/0097G01N35/025G01N21/253Y10T436/113332Y10T436/115831
Inventor 周丽华王志红翁彦雯李锋
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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