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Method for discerning and sorting products whereby the concentration of a component of these products is determined

A technology of specific concentration and product, applied in sorting and other directions, can solve problems such as inability to obtain reliable product sorting, infeasible composition, weak fluorescence, etc.

Active Publication Date: 2012-05-16
BEST 2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, fluorescence-based picking is not feasible for many ingredients because fluorescence does not occur at the wavelength of light used for sorting purposes, or because the fluorescence is too weak to obtain reliable product picking

Method used

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  • Method for discerning and sorting products whereby the concentration of a component of these products is determined
  • Method for discerning and sorting products whereby the concentration of a component of these products is determined
  • Method for discerning and sorting products whereby the concentration of a component of these products is determined

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Embodiment Construction

[0019] The method according to the invention enables the identification or sorting of products according to the presence of specific ingredients in them. Such ingredients may include, for example, water, oil, sugar, protein, starch, cellulose or nicotine. Proper products thus contain a certain concentration of the ingredient, while products that do not contain the ingredient or contain an abnormal concentration of the ingredient are considered abnormal products that need to be removed from the product flow during picking.

[0020] In order to thus detect abnormal products, light beams are irradiated on these products, and the intensity of light reflected by the products is measured. Accordingly, a light beam is selected having a wavelength for which the component has an absorption peak. Thus, according to the method of the invention, the presence or absence of the relevant component in the product is detected by determining the absorption of light of said light beam at the re...

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Abstract

The invention concerns a method for discerning and sorting suitable products in a product flow having a certain concentration of a component versus anomalous products having this component in an anomalous concentration, whereby a beam of light strikes these products, and the absorption of this beam of light by said component in the products is detected by measuring the intensity of the light reflected by the products at least at a wavelength or in at least a wavelength band which is situated between 900 nm and 2500 run in order to generate a detection signal on the basis of said absorption, whereby a product will be identified as an anomalous product if said detection signal exceeds a threshold value.

Description

technical field [0001] The present invention relates to a method for optically sorting preferably granular products, in particular to a method for distinguishing suitable products having a specific concentration of ingredients from unusual products having abnormal concentrations of said ingredients and sorting these products . According to this method, a beam of light illuminates products moving in a broad product stream, and the intensity of the light reflected by the products is measured in order to generate a detection signal enabling proper products to be distinguished from abnormal products. For product picking, the removal device is controlled by said detection signal in order to separate abnormal products from the product flow. Background technique [0002] According to methods known from the state of the art, the light beam is directed towards the product and the intensity of the light scattered by the product and / or directly reflected by the product is detected. S...

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Application Information

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IPC IPC(8): B07C5/342G01N21/35G01N21/359
CPCB07C5/342
Inventor P·博格曼斯C·菲维兹J·斯派洛克
Owner BEST 2