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Aflatoxin online detection device and material sorting equipment using the device

An aflatoxin and detection device technology, which is applied in the field of aflatoxin sorting devices, can solve the problems of weak fluorescence signal, weak fluorescence wavelength characteristics, poor recognition rate, etc., achieves wide application prospects and improves online recognition. rate, the effect of a wide range of applications

Active Publication Date: 2018-03-23
HEFEI MEIYA OPTOELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a detection accuracy method for the weak fluorescent signal of the existing aflatoxin sorting equipment, the poor recognition rate caused by tumbling during the feeding process, and the low characteristic of the selected fluorescent wavelength. High aflatoxin detection and sorting device

Method used

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  • Aflatoxin online detection device and material sorting equipment using the device
  • Aflatoxin online detection device and material sorting equipment using the device
  • Aflatoxin online detection device and material sorting equipment using the device

Examples

Experimental program
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no. 1 example

[0031] Please refer to figure 1 , The aflatoxin online detection device of this embodiment includes two light source emitting and signal receiving integrated units 51 and 52 distributed symmetrically or asymmetrically on both sides of the track of the material 4 . The material 4 enters the material conveying unit 7 from the unloading device 6 and is transported to the detection areas of the light emitting and signal receiving integrated units 51 and 52 with the same structure.

[0032] Please also see figure 2 As shown, each light source emission and signal reception integrated unit includes an ultraviolet light source 1, a hole mirror 2, a rotating mirror 3, an imaging lens 4, spectroscopic filters 11, 12, 13, and single-point photodetectors 21, 22 ,twenty three.

[0033] The ultraviolet light source 1 and single-point photodetectors 21 , 22 , 23 in each group of integrated light source emitting and signal receiving units are arranged oppositely on both sides of the track...

no. 2 example

[0045] This patent application can also design another structure of aflatoxin online detection device according to the structural principle diagram of another embodiment. The method is to use a spectroscopic filter to perform light splitting first, and install multiple imaging lenses and corresponding multiple single-point photodetectors.

[0046] see Figure 4 In this embodiment, the light source emitting and signal receiving integrated unit on the side of the material 4 includes an illumination system 71 , spectroscopic filters 14 , 15 , imaging lenses 131 , 132 , 133 , and single-point photodetectors 81 , 82 , 83 . The light emitting and signal receiving integrated unit structure on the other side of the material 4 includes an illumination system 72 , spectroscopic filters 16 , 17 , imaging lenses 134 , 135 , 136 , and single-point photodetectors 84 , 85 , 86 .

[0047] Usually, fluorescence characteristic filters 91-96 need to be added between the imaging lenses 131-136 a...

no. 3 example

[0053] This patent application can also be according to the structural schematic diagram of another embodiment ( Figure 7 ) designed another structure of aflatoxin on-line detection device, the difference between its signal receiving mode and the second embodiment is that there is no spectroscopic filter, and multiple imaging lenses plus corresponding multiple single-point photodetectors are directly used way to achieve.

[0054] see Figure 7 In this embodiment, the integrated unit for light source emission and signal reception on the side of the material 4 includes an illumination system 71 , imaging lenses 131 , 132 , 133 , and single-point photodetectors 81 , 82 , 83 . The light emitting and signal receiving integrated unit structure on the other side of the material 4 includes an illumination system 72 , imaging lenses 134 , 135 , 136 , and single-point photodetectors 84 , 85 , 86 .

[0055] Usually, fluorescence characteristic filters 91-96 need to be added between th...

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Abstract

An on-line detection device for aflatoxin, including a plurality of light source emitting and signal receiving integrated units and a host computer distributed on both sides of the material track, wherein the lighting system includes an ultraviolet light source and a reflected ultraviolet light source to generate a vertical direction along the material. The rotating reflector of the line light source, the signal receiving integrated unit receives the signals of multiple fluorescent wavelengths of the reflected light at the same position on the same material surface, and converts them into electrical signals, and the host computer selects any three signals among them to synthesize a color image , the sensor in the optical signal receiving device is a single-point photodetector. The invention also discloses a material sorting device using the detection device. The beneficial effects of the present invention are: the weak fluorescent signal on the surface of the material is effectively detected, each point of the material to be tested is only detected once by a single-point photoelectric detector, there is no signal superposition, and the influence of material tumbling and skipping is eliminated, effectively Distinguishing between aflatoxin-contaminated materials and normal materials.

Description

technical field [0001] The technical proposal of the patent application belongs to the technical field of food processing, especially a sorting device for detecting aflatoxin in moldy materials. Background technique [0002] Aflatxoni (AF) is a highly toxic and strong carcinogenic molecular mycotoxin, and it is the most stable chemical structure among various mycotoxins discovered so far. In 1993, aflatoxin was classified as one of the strongest known carcinogenic chemicals by the Cancer Research Institute of the World Health Organization. Its toxicity is 10 times greater than potassium cyanide and 68 times greater than arsenic. Studies have shown that aflatoxins are most likely to contaminate peanuts, corn, cottonseed, poultry eggs, meat, milk and dairy products. Therefore, detecting and removing Aspergillus flavus from contaminated food can greatly reduce the harm of aflatoxin to human body, which has important practical significance. [0003] The existing patents for af...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64B07C5/34
Inventor 方杰常宏胡修稳戚丽闫朝民刘宝莹
Owner HEFEI MEIYA OPTOELECTRONICS TECH
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