Material sorting device and sorting method

Abstract

The invention discloses a material sorting device and a sorting method. The material sorting device comprises an infrared light source, a light splitting module, a first infrared light filtering module, a second infrared light filtering module, a first infrared imaging module, a second infrared imaging module and a control module, wherein the infrared light source is used for providing an illumination source for to-be-sorted materials; the light splitting module is used for conducting light splitting treatment on infrared light reflected by the to-be-sorted materials so that first infrared light and second infrared light can be obtained; the first infrared light filtering module is used for filtering the first infrared light so that filtered first infrared light can be obtained; the second infrared light filtering module is used for filtering the second infrared light so that filtered second infrared light can be obtained; the first infrared imaging module is used for conducting imaging on the filtered first infrared light so that a first infrared image can be obtained; the second infrared imaging module is used for conducting imaging on the filtered second infrared light so that a second infrared image can be obtained; and the control module is used for synthesizing the first infrared image and the second infrared image so that a double-infrared image can be generated, and the to-be-sorted materials are sorted according to the double-infrared image.

Description

technical field [0001] The invention relates to the technical field of photoelectric separation, in particular to a sorting device for materials and a sorting method for the sorting device. Background technique [0002] At present, there are various kinds of grains, miscellaneous grains, and nuts on the market, and the output is large. The market potential for sorting these materials is huge. Some of them contain materials with different ingredients, such as the kernel and shell of nuts, when their color, shape, etc. When the external features are very close, it can be sorted by combining visible light or visible light with single infrared, which can remove impurities with different appearance or color differences, but for materials and impurities with very small color difference or almost the same color, conventional sorting The effect still needs to be further improved. [0003] In related technologies, laser technology can also sort materials with similar or the same col...

AI Technical Summary

Problems solved by technology

However, the above method or device may not be effective in sorting unwanted parts of certain materials or agricultural products during natural growth or processing. For example, in the shelling process of walnut automatic processing And walnut kernels need to be sorted. Since walnut shells are not introduced from the outside, but a part of the material itself, and the proportion of walnut shells in the mixture is relatively large, how to effectively identify and separate these two substances Selected, the research of those skilled in the art is urgently needed

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