Standard light source and chemiluminescence immunoassay analyzer using the standard light source
A standard light source and luminescent point technology, which is applied in the direction of chemiluminescence/bioluminescence, analysis by making materials undergo chemical reactions, light sources, etc., can solve the problems of inability to output constant intensity optical signals and changes in luminous intensity
Active Publication Date: 2018-03-27
SHENZHEN NEW INDS BIOMEDICAL ENG
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Problems solved by technology
However, the luminous intensity of existing standard light sources is easy to change with voltage fluctuations, and cannot output a constant intensity optical signal
Method used
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[0030] The standard light source and the chemiluminescence immunoassay analyzer using the standard light source will be described below in conjunction with the accompanying drawings and specific examples.
[0031] like figure 1 As shown, a chemiluminescence immunoassay analyzer 10 according to an embodiment includes a standard light source 12 and a photomultiplier tube 14 .
[0032] The standard light source 12 includes an input module 100 , a feedback control module 200 , a light emitting diode 300 , a detection module 400 and a filter 500 .
[0033] The input module 100 is used for generating a reference signal. In this embodiment, the reference signal is a voltage signal. Specifically, the input module 100 includes a D / A conversion circuit 110, a single-chip microcomputer 120 connected to the D / A conversion circuit 110, a voltage regulator 130 providing a stable reference voltage for the D / A conversion circuit 110, and a computer connected to the single-chip microcomputer...
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Abstract
The invention relates to a standard light source and a chemiluminescence immunity analyzer using the standard light source. The standard light source comprises an input module which is used for generating a reference signal; a feedback control module which comprises a differential ratio operation circuit and a constant current source drive circuit, wherein the differential ratio operation circuit is connected with the input module and the constant current source drive circuit; a light-emitting diode which is connected with the constant current source drive circuit and used for providing a first light signal for a detection module and providing a second light signal for a photomultiplier; and the detection module which is connected with the differential ratio operation circuit and used for receiving the first light signal and converting the first light signal into an electric signal. Luminous intensity of the standard light source is stable.
Description
technical field [0001] The invention relates to the field of biochemical detection instruments, in particular to a standard light source and a chemiluminescence immunoassay analyzer using the standard light source. Background technique [0002] In the automatic chemiluminescence immunoassay analyzer, the single photon counting module is the core component of the automatic chemiluminescence immunoassay analyzer, which detects and processes the weak light signal generated by the reagent reaction. Photomultiplier tubes, as the key components of weak light signal detection sensors, have been applied to various industrial occasions, but in the field of clinical testing and analysis instruments, higher requirements are put forward for its application, because photomultiplier tube signal detection The accuracy of the test determines the accuracy of the patient's disease diagnosis and analysis results. [0003] As the key component of the single photon counting module, the photomul...
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IPC IPC(8): H05B37/02G01N21/76
Inventor 胡毅尹力朱亮喻雷饶捷陈大巍
Owner SHENZHEN NEW INDS BIOMEDICAL ENG