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Detection method and device for internal defects of jujube fruits on basis of visible/near-infrared spectrum

A near-infrared spectrum and internal defect technology is applied in the field of internal defect detection of jujube fruit, which can solve the problems of difficult detection of jujube fruit and achieve high efficiency

Active Publication Date: 2018-06-12
CHINA AGRI UNIV +1
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  • Description
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Problems solved by technology

[0005] In order to solve the problem that internal defects of jujube fruit are difficult to detect, the present invention provides a method for detecting internal defects of jujube fruit based on visible / near infrared spectrum

Method used

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  • Detection method and device for internal defects of jujube fruits on basis of visible/near-infrared spectrum
  • Detection method and device for internal defects of jujube fruits on basis of visible/near-infrared spectrum
  • Detection method and device for internal defects of jujube fruits on basis of visible/near-infrared spectrum

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Embodiment Construction

[0064] The present invention will be further described below in conjunction with the accompanying drawings.

[0065] 1. Visible / near-infrared jujube fruit quality detection device

[0066] Such as figure 2 As shown, the visible / near-infrared jujube quality detection device consists of the following components:

[0067] The spectrum acquisition unit includes a light source 1 and an optical fiber 5 . The light source 1 is a tungsten-halogen lamp, specifically two 12V 100W tungsten-halogen lamp cups (Osram); the distance between the light source 1 and the sample stage 9 needs to be determined according to the power of the light source; the optical fiber 5 is fixed on the lifting platform 8 by the probe bracket 6, and can be lifted The platform 8 moves up and down; the optical fiber 5 is fixed at one end of the probe bracket 6 for collecting spectral information, and the other end is connected with the spectrometer 7 to transmit the optical signal to the spectrometer 7 .

[0068...

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Abstract

The invention discloses a detection method and device for internal defects of jujube fruits on the basis of visible / near-infrared spectrum. The detection method comprises the following steps of: (R1)sample preparation and spectrum information acquisition; (R2) establishment of a judgment model for the internal defects of the jujube fruits: adopting a model with the highest accuracy in judging theinternal defects of the jujube fruits as an optimum judgment model; (R3) using the optimum judgment model to judge the internal defects of the jujube fruits to be detected; (R4) recurrence of the internal defects of the jujube fruits to be detected. Proved by experiments, the detection method for the internal defects of the jujube fruits on the basis of the visible / near-infrared spectrum providedby the invention has the beneficial effects that the judgment accuracy for the internal defects of the jujube fruits can reach 96.77%; by acquisition of the visible / near-infrared spectrum informationof the jujube fruits, the judgment model for the internal defects of the jujube fruits is established for detecting the internal defects of the jujube fruits; the detection method and device have thecharacteristics of fastness and no damage.

Description

technical field [0001] The invention relates to the technical field of post-harvest selection of agricultural products, in particular to a method and device for detecting internal defects of jujube fruits based on visible / near infrared spectroscopy. Background technique [0002] Jujube fruit is rich in vitamins and trace elements, and has extremely high nutritional value. Statistics from the National Bureau of Statistics of China in 2014 show that the annual output of jujube in China is 8.0758 million tons. The main sales form of jujube fruit is dried jujube fruit, which is easier to store than fresh jujube fruit. Before the jujube fruit is dried, it is necessary to carry out quality classification according to the size and appearance of the fruit. [0003] During the jujube tree planting and jujube ripening process, changes in factors such as temperature, rainfall, and mineral content in the growing environment may cause jujube fruit cracking. And jujube fruit is very vul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N21/88
CPCG01N21/31G01N21/84G01N21/8851G01N2021/8466G01N2021/8883
Inventor 汤修映朱晓彤胡灿鲁兵
Owner CHINA AGRI UNIV
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