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Nondestructive identification method of rice with industrial wax

A technology for industry and rice, applied in the field of substance identification, can solve problems such as low efficiency and misjudgment, and achieve the effect of simple operation

Inactive Publication Date: 2015-03-11
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the method that people use to identify whether rice is industrially waxed is mainly based on sensory identification. This method is very inefficient and has a high possibility of misjudgment.

Method used

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  • Nondestructive identification method of rice with industrial wax
  • Nondestructive identification method of rice with industrial wax
  • Nondestructive identification method of rice with industrial wax

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Experimental program
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Embodiment Construction

[0021] Such as figure 1 As shown in the schematic diagram of the implementation system structure of the industrial waxed rice identification method, the light source 6 is a halogen lamp with an adjustable power of 0-150W and a wavelength range of 400nm-2500nm, and two glass optical fibers are connected at the exit of the halogen lamp. The two glass fibers are located on two symmetrical brackets under the hyperspectral camera 2. The light of the two glass fibers passes through the two rectangular condenser lenses 3 fixed on the brackets and irradiates the displacement platform 4 from both sides. Can make the light more uniform and concentrated, and can eliminate local bright spots. The rice sample is placed in a black uncovered box, and then the uncovered box is placed on the displacement platform 4. The purpose of using the black uncovered box is to reduce the error caused by background light scattering. The light is reflected by the rice sample and enters the hyperspectral came...

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Abstract

The invention relates to a nondestructive identification method of rice with industrial wax. The nondestructive identification method comprises the steps of shooting a hyperspectral image of the rice with a visible-near-infrared hyperspectral imaging system to obtain three-dimensional information of the rice, correcting with a black and white board to convert spectral response strength of a rice sample under each wavelength into reflectivity, preprocessing reflectivity data with multiplicative scatter correction (MSC), extracting eight characteristic wavelengths by a successive projections algorithm (SPA), then shooting unknown rice to obtain a hyperspectral image of the unknown rice, and establishing a mathematical regression model according to a partial least squares (PLS) method to identify whether the unknown rice is coated with the industrial wax, wherein two-dimensional information is spatial information, and one-dimensional information is spectral information. The method is quick and convenient, and simple to implement, and a feasible method is provided for quick nondestructive identification of the rice with the industrial wax on a market.

Description

Technical field [0001] The invention relates to a substance identification method, in particular to a nondestructive identification method for industrial waxed rice based on hyperspectral imaging technology. Background technique [0002] Rice is one of the staple foods of mankind, and it is also an important part of China's food. According to modern nutrition analysis, rice contains protein, fat, vitamin B1, A, E and many kinds of minerals, so eating rice has higher nutritional value. With the improvement of living standards, people have higher and higher requirements for the quality of rice. Rice currently on the market has certain safety hazards. Many illegal vendors sell rice treated with industrial wax in order to make the rice look good. This is what we call “poisonous rice”. Industrial wax is generally extracted directly from petroleum. After the human body ingests industrial wax, it will cause diarrhea and other gastrointestinal diseases. In addition, the industrial extr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/55
Inventor 李柏承赵曼彤周瑶侯宝路徐邦联张大伟王琦黄元申
Owner UNIV OF SHANGHAI FOR SCI & TECH
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