CN105597911A - Fruit sorting method - Google Patents

Abstract

The invention discloses a fruit sorting method. The fruit sorting method comprises the steps that firstly, the same variety of fruits to be detected are sorted according to shapes; the fruits in the same shape are graded according to the size; the fruits in the same shape and the same size grade are sorted according to colors; finally, quality sorting is carried out. According to the fruit sorting method, fruits can be graded in different ways, the grading speed is high, sorting efficiency is high, precise sorting can be carried out according to the indexes such as the surface color, size, shape and quality of fruits, the production efficiency is improved, and the labor intensity is lowered; in addition, needed equipment is simple, and cost is low.

Description

A kind of Fruit Sorting Method

Technical field

The present invention relates to fruit processing technique field, relate in particular to a kind of Fruit Sorting Method.

Background technology

The key step that fruit is adopted rear processing comprises material loading, cleaning, dry, waxing, classification, packaging etc., andFruit grading is that fruit is adopted key link and the core technology in rear processing. Through grinding of Chinese scholars decadesStudy carefully, obtain a variety of fruit grading methods, more conventional stage division has artificial separation method, mechanical type at presentSeparating method, dielectric cleaning staging, machine vision separating method, impact resonance method, laser separating method, based on XRadial imaging separating method, based near infrared spectrum separating method, based on high spectrum separating method with based on Terahertz wavelength-divisionSelect method etc. Artificial separation is mainly size, shape, color, the quality that judges fruit according to people's subjective visionDeng carrying out classification, artificial separation method can reduce the mechanical damage to fruit in classification process to greatest extent, butBecause individual subjective judgement is subject to individual eyesight, the recognition capability to color, personal mood, external lightWith the impact of other factors, accuracy rate is not high, and very difficult strict carries out classification, the efficiency of separation according to grade scaleLowly, and hierarchical speed is slower, and labour intensity is larger, needs a large amount of labours. And other separating methodAlthough precision is higher, the equipment cost needing is large.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art, a kind of Fruit Sorting Method is provided, it is right to realizeThe classification that fruit is different, hierarchical speed is fast, the efficiency of separation is high, can to fruit surface color, size, shape,The indexs such as quality are carried out accurate sorting, have improved production efficiency, have reduced labour intensity, and equipment needed thereby letterSingle, cost is low.

To achieve these goals, the present invention adopts following technical scheme:

A kind of Fruit Sorting Method, first divides by shape the fruit to be measured of same kind, then for same class shapeThe fruit of shape carries out size fractionation, then carries out color classification for the fruit of same shape, same order of magnitude,Finally carry out attribute classification, concrete steps are as follows:

(1) first shape is divided: for each fruit of the fruit to be measured of same kind, gather the different attitudes of 10 widthFruit coloured image, every width fruit coloured image is carried out to background segment and target and extracts, obtain fruit two-valueImage; Then solve the external square of minimum of fruit in every width fruit bianry image, minimum external Ju Liangtiao centerThe fruit in every width fruit bianry image is divided into four regions by line, solves respectively the fruit area in four regions;Finally solve the symmetry index of fruit in every width fruit bianry image, rectify and 1 shape with at least 1 shapeThe median of the symmetry index dispersion of the fruit of the same race of not rectifying, as the threshold values of this kind fruit, is somebody's turn to do to be measuredThe symmetry index dispersion of kind fruit and the threshold values of this kind fruit compare whether to judge fruit shapeRectify, and fruit to be measured is pressed to shape sorting for rectifying and do not rectify two classes;

(2) then divide by size: for step (1) by the result of Shape Classification, for difformity classificationFruit carry out respectively big or small sorting, adopt classification vibrational system by vibration to the meticulous size fractionation of fruit, willFruit is divided into large, medium and small three ranks;

(3) divide by color again: the structure of classifying by size for step (2), by other water of different size classesFruit carries out respectively colour sorting; The fruit of same shape classification, same order of magnitude is placed on transport tape,Transport tape, through the Photo Studio of a sealing, provides a stable incandescent source in Photo Studio, then use camera gun withThe color of same standard recording fruit surface is also transferred to result on computer, and then computer basis is presetFruit is categorized into several classes that color is different by program;

(4) finally divide by quality: utilize waterpower sorting, by same shape classification, same order of magnitude, sameThe fruit of one colour type is put into same mobile tank, by flow velocity, fruit is divided into different quality grades, streamThe poor quality level that speed is fast, what flow velocity was medium is quality middle rank, what flow velocity was slow is quality top grade.

Compared with the prior art, beneficial effect of the present invention is as follows:

Fruit Sorting Method of the present invention, can realize the classification different to fruit, and hierarchical speed is fast, sorting effectRate is high, can carry out accurate sorting to indexs such as fruit surface color, size, shape, qualities, has improved productionEfficiency, has reduced labour intensity, and equipment needed thereby is simple, and cost is low.

Detailed description of the invention

Below in conjunction with embodiment, the present invention is further illustrated, but the present invention is not limited only to these embodiment,Under the prerequisite that does not depart from aim of the present invention, within any improvement of doing all drops on protection scope of the present invention.

Embodiment 1:

A kind of Fruit Sorting Method, first divides by shape the fruit to be measured of same kind, then for same class shapeThe fruit of shape carries out size fractionation, then carries out color classification for the fruit of same shape, same order of magnitude,Finally carry out attribute classification, concrete steps are as follows:

(1) first shape is divided: for each fruit of the fruit to be measured of same kind, gather the different attitudes of 10 widthFruit coloured image, every width fruit coloured image is carried out to background segment and target and extracts, obtain fruit two-valueImage; Then solve the external square of minimum of fruit in every width fruit bianry image, minimum external Ju Liangtiao centerThe fruit in every width fruit bianry image is divided into four regions by line, solves respectively the fruit area in four regions;Finally solve the symmetry index of fruit in every width fruit bianry image, rectify and 1 shape with at least 1 shapeThe median of the symmetry index dispersion of the fruit of the same race of not rectifying, as the threshold values of this kind fruit, is somebody's turn to do to be measuredThe symmetry index dispersion of kind fruit and the threshold values of this kind fruit compare whether to judge fruit shapeRectify, and fruit to be measured is pressed to shape sorting for rectifying and do not rectify two classes;

(2) then divide by size: for step (1) by the result of Shape Classification, for difformity classificationFruit carry out respectively big or small sorting, adopt classification vibrational system by vibration to the meticulous size fractionation of fruit, willFruit is divided into large, medium and small three ranks;

(3) divide by color again: the structure of classifying by size for step (2), by other water of different size classesFruit carries out respectively colour sorting; The fruit of same shape classification, same order of magnitude is placed on transport tape,Transport tape, through the Photo Studio of a sealing, provides a stable incandescent source in Photo Studio, then use camera gun withThe color of same standard recording fruit surface is also transferred to result on computer, and then computer basis is presetFruit is categorized into several classes that color is different by program;

(4) finally divide by quality: utilize waterpower sorting, by same shape classification, same order of magnitude, sameThe fruit of one colour type is put into same mobile tank, by flow velocity, fruit is divided into different quality grades, streamThe poor quality level that speed is fast, what flow velocity was medium is quality middle rank, what flow velocity was slow is quality top grade.

Fruit Sorting Method of the present invention, can realize the classification different to fruit, and hierarchical speed is fast, sorting effectRate is high, can carry out accurate sorting to indexs such as fruit surface color, size, shape, qualities, has improved productionEfficiency, has reduced labour intensity, and equipment needed thereby is simple, and cost is low.

Claims (1)

1. a Fruit Sorting Method, is characterized in that: first the fruit to be measured of same kind divided by shape,Then carry out size fractionation for the fruit of same class shape, then for the water of same shape, same order of magnitudeFruit carries out color classification, finally carries out attribute classification, and concrete steps are as follows:

(1) first shape is divided: for each fruit of the fruit to be measured of same kind, gather the different attitudes of 10 widthFruit coloured image, every width fruit coloured image is carried out to background segment and target and extracts, obtain fruit two-valueImage; Then solve the external square of minimum of fruit in every width fruit bianry image, minimum external Ju Liangtiao centerThe fruit in every width fruit bianry image is divided into four regions by line, solves respectively the fruit area in four regions;Finally solve the symmetry index of fruit in every width fruit bianry image, rectify and 1 shape with at least 1 shapeThe median of the symmetry index dispersion of the fruit of the same race of not rectifying, as the threshold values of this kind fruit, is somebody's turn to do to be measuredThe symmetry index dispersion of kind fruit and the threshold values of this kind fruit compare whether to judge fruit shapeRectify, and fruit to be measured is pressed to shape sorting for rectifying and do not rectify two classes;

(2) then divide by size: for step (1) by the result of Shape Classification, for difformity classificationFruit carry out respectively big or small sorting, adopt classification vibrational system by vibration to the meticulous size fractionation of fruit, willFruit is divided into large, medium and small three ranks;

(3) divide by color again: the structure of classifying by size for step (2), by other water of different size classesFruit carries out respectively colour sorting; The fruit of same shape classification, same order of magnitude is placed on transport tape,Transport tape, through the Photo Studio of a sealing, provides a stable incandescent source in Photo Studio, then use camera gun withThe color of same standard recording fruit surface is also transferred to result on computer, and then computer basis is presetFruit is categorized into several classes that color is different by program;

(4) finally divide by quality: utilize waterpower sorting, by same shape classification, same order of magnitude, sameThe fruit of one colour type is put into same mobile tank, by flow velocity, fruit is divided into different quality grades, streamThe poor quality level that speed is fast, what flow velocity was medium is quality middle rank, what flow velocity was slow is quality top grade.