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Online aflatoxin detecting device and material sorting equipment adopting same

A kind of aflatoxin and detection device technology, applied in the field of aflatoxin sorting device, can solve the problems of weak fluorescent wavelength characteristics, weak fluorescent signal, and poor recognition rate, so as to improve the online recognition rate and be widely used Prospects, effects of widespread application

Active Publication Date: 2015-11-11
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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  • Online aflatoxin detecting device and material sorting equipment adopting same
  • Online aflatoxin detecting device and material sorting equipment adopting same
  • Online aflatoxin detecting device and material sorting equipment adopting same

Examples

Experimental program
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Effect test

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 transmitting and signal receiving integrated unit includes an ultraviolet light source 1, a perforated 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 ...

no. 2 example

[0045] This patent application also can be according to the structural principle of another kind of embodiment picture Design another structure of aflatoxin online detection device, the difference between it and the first embodiment is that the signal receiving mode in the light source emission and signal receiving integrated unit is to use the spectroscopic filter to split the light first, and install multiple imaging It is realized by lens plus 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 ...

no. 3 example

[0053] This patent application also can be according to the structural principle of another kind of embodiment picture( 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...

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Abstract

The invention provides an online aflatoxin detecting device. The online aflatoxin detecting device comprises multiple light source transmitting and signal receiving integration units distributed at the two sides of a material track, and an upper computer. Each illuminating system comprises an ultraviolet source and a rotating reflection mirror which reflects the ultraviolet source to generate a line light source in the material perpendicular direction. Each signal receiving integration unit receives signals of multiple fluorescence wavelengths of bounce light at the same position of the surface of the same material, and converts the signals into electrical signals. The upper computer selects the signals of any three paths to be synthesized into a color image. A sensor in each optical signal receiving device is a single-point photoelectric detector. The invention further discloses material sorting equipment adopting the detecting device. The detecting device has the advantages that the weak fluorescence signals on the surfaces of the materials are effectively detected, each detected material point is only detected by the corresponding single-point photoelectric detector once, signal superposition is avoided, influence of material rolling, jumping and the like is eliminated, and the materials contaminated by aflatoxin and the normal materials are effectively distinguished.

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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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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