Dry chemical reagent light reflectance detector

Abstract

The invention discloses a dry chemical reagent light reflectance detector. The detector comprises a circuit board (1) and is characterized in that a photosensitive sensor (2) and an LED lamp holder (3) are installed on the circuit board (1), wherein the photosensitive sensor (2) is arranged in a light guiding drum (4) at the connecting surface of the lamp holder (3) and the circuit board in a sleeving manner, and the photosensitive sensor (2) is additionally provided with a diaphragm capable of alleviating the grounding interference of a reagent; a conical bulge (5) is arranged at the center of the other surface of the lamp holder (3), a groove (7) for installing an LED lamp (6) is formed in the periphery of the conical bulge (5), the LED lamp (6) and the photosensitive sensor (2) are bothelectrically connected with the circuit board (1), and lighting small holes (8) for reflecting reflected light of a dry chemical reagent are formed in the center of the conical bulge (5); a light guiding cover (9) is installed on one surface, far away from the circuit, of the LED lamp holder (3), and a light emitting hole (10) is formed in the center of the light guiding cover (9). According to the detector, the structure is simple, the illumination intensity is strong, the light path is simple, the reflected light directly enters the photosensitive sensor, and the anti-interference capability is strong.

Description

technical field [0001] The invention relates to a chemical reagent detection technology, in particular to a light reflection device for dry chemical reagent detection in medical biochemical detection, in particular to a dry chemical reagent light reflectance detection device. Background technique [0002] At present, the reaction detection of dry chemical reagents needs to test the reflectance of multiple wavelengths. The commonly used method is realized by LED light source + integrating sphere, which has the disadvantages of low illumination, easy to be interfered by ambient light, and fewer wavelengths of light sources that can be selected. Therefore, it is urgently needed Design a reflective detection device that can select up to 6 wavelengths of light, and the intensity of light intensity is greatly enhanced, and can reduce ambient light interference. Contents of the invention [0003] The purpose of the present invention is to aim at the weak light irradiance of the l...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to aim at the weak light irradiance of the light irradiated on the surface of the dry chemical reagent by the existing reflectance detection device, which causes the subsequent amplifying circuit to be easily interfered by ambient light or noise, which affects signal acquisition and analysis, and ultimately affects detection The problem of the result is to design a dry chemical reagent light reflectance detection device that can increase the irradiance of light irradiating the reagent surface

Images