Method and device for simultaneous online detection of hidden damages and sugar content of yellow peaches by near infrared spectrum diffuse transmission technique

A near-infrared spectroscopy and detection device technology is applied in the field of simultaneous online detection devices for hidden defects and sugar content of yellow peach to achieve the effect of simplifying the model

Inactive Publication Date: 2018-01-23
EAST CHINA JIAOTONG UNIVERSITY
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  • Method and device for simultaneous online detection of hidden damages and sugar content of yellow peaches by near infrared spectrum diffuse transmission technique
  • Method and device for simultaneous online detection of hidden damages and sugar content of yellow peaches by near infrared spectrum diffuse transmission technique
  • Method and device for simultaneous online detection of hidden damages and sugar content of yellow peaches by near infrared spectrum diffuse transmission technique

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[0021] First of all, it is necessary to select yellow peach samples with no surface damage, no deformity, and uniform size. After removing the surface dust, store them at room temperature at 20 °C for 24 hours, and start the test after the sample temperature is basically the same as room temperature. A small ball with a mass of about 0.4kg is used to roll down a slope with an inclination angle of 9° and a slope length of 0.4 m to simulate the invisible damage caused by collision and extrusion in actual production and transportation. In order to obtain samples of hidden damage.

[0022] The samples are numbered in turn, and each sample is marked with two surfaces, the smooth side and the convex side of the suture surface. It included 75 normal fruit samples and 25 hidden damage fruit samples. Carry out artificial fruiting in sequence according to the number, and the samples are placed as shown in Figure 1, so as to increase the amount of light passing through the samples and r...

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Abstract

The invention discloses a method and device for simultaneous online detection of hidden damages and sugar content of yellow peaches by a near infrared spectrum diffuse transmission technique. The method and the device are characterized in that a) by light path arrangement in a manner of all-around irradiating and bottom receiving, influences caused by nonuniformity of sample sugar contents on model precision can be reduced; b) stray light can be effectively inhibited by a combination device under own gravity actions of samples; c) the method for simultaneous online detection of the hidden damages and the sugar content of the yellow peaches is provided.

Description

technical field [0001] The invention relates to the technical field of simultaneous online non-destructive detection of hidden damage and sugar content of fruits, in particular to a device and method for simultaneous online detection of hidden defects and sugar content of yellow peaches based on near-infrared spectroscopy. Background technique [0002] Yellow peaches are very nutritious, rich in a variety of carotene, dietary fiber and a variety of trace elements. Yellow peaches are soft but hard when eaten, more sweet and less sour. They are deeply loved by consumers and demand exceeds supply in the market. However, due to the soft surface of ripe yellow peach fruit, it is very easy to collide and squeeze during manual picking, packaging and transportation. Thereby causing hidden damage, seriously affecting the sales and export of yellow peaches. In addition, sorting and packaging yellow peaches according to sugar levels can adapt to a larger consumer group. Secondly, it ...

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Application Information

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IPC IPC(8): G01N21/359G01N21/84B07C5/34
Inventor 刘燕德吴明明朱丹宁胡军姜小刚欧阳爱国
Owner EAST CHINA JIAOTONG UNIVERSITY
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