New rice and old rice quality detection device and detection method based on visual light, near-infrared and terahertz integrated spectrum technology

Abstract

The invention discloses a new rice and old rice quality detection device and detection method based on a visual light, near-infrared and terahertz integrated spectrum technology. The detection device is composed of a halogen light source, a visual light-near-infrared hyperspectrum sensor, a transmission-type terahertz time-domain spectrum system, a rotation-type sample carrying device, a groove-type sample table, an electronic control detection rocker arm, electronic control sample table rocker arms, a computer, a data acquisition card, a control module, a mode switching button, a shading hood, an instrument rack and the like. When detection is conducted, visual light-near-infrared hyperspectra and terahertz spectra of a sample are collected through the mode switching button. An optimal characteristic wave band combination of the related visual light, near-infrared and terahertz integrated spectra which are stored in experiments is extracted and substituted into a related quantitative detection model, and qualitative results of the related new rice and old rice quality of the rice sample and related protein and amino acid are obtained and output. Accordingly, limitation generated when the new rice and old rice quality is detected through a single spectrum technique is broken through, and the detection device and detection method can be used for real-time storage quality detection on warehouse rice.

Description

technical field [0001] The invention is a rice fresh quality detection device based on visible light, near-infrared and terahertz fusion spectrum technology, and relates to the technical field of agricultural product detection. Background technique [0002] Rice is the staple food of the Orientals. Rice can provide rich vitamins, oryzanol, protein, anthocyanins and other nutrients, and has the effects of nourishing the spleen, harmonizing the stomach, and clearing the lungs. However, after the rice has been stored for a long time, due to the influence of environmental factors (temperature, moisture, etc.), the starch, fat and protein in the rice will undergo various changes, making the rice lose its original color, aroma, taste, and nutritional content. And edible quality declines, even produces toxic and harmful substances (such as aflatoxin, etc.). According to national regulations, aged rice can only be sold to specific feed processing and brewing enterprises through auc...

AI Technical Summary

Problems solved by technology

The research results show that near-infrared spectroscopy can be used to determine the functional groups contained in rice molecules, and can be used to detect quality indicators such as rice internal proteins, but the detection accuracy needs to be improved; visible light has achieved good results in the detection of color and appearance. Using visible light single-band information, the amount of information is not comprehensive enough, and the detection accuracy needs to be improved; terahertz spectroscopy can analyze and identify subtle changes in the molecular structure of crops, but it is limited to qualitative identification research on certain internal qualities of agricultural products

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