Cereal freshness detecting method and device

A newness and grain technology, applied in measuring devices, material analysis through optical means, instruments, etc., can solve problems such as loopholes and insufficient precision in grain quality monitoring

Inactive Publication Date: 2015-08-19
HENAN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0008] The purpose of the present invention is to provide a method and device for detecting the freshness of grains, aiming to solve the problem that the existing grains, especially rice detection techniques, are not accurate enough, leading to loopholes in grain quality monitoring

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  • Cereal freshness detecting method and device
  • Cereal freshness detecting method and device

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Embodiment Construction

[0059] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0060] A method for detecting the freshness of grains, such as figure 1 shown, including the following steps:

[0061] S1. For the collected property information of each variety of standard grains and the terahertz transmission spectra of the standard grains after tableting, store the property information and terahertz transmission spectra and establish a standard spectrum library.

[0062] In step S1, the trait information includes the storage period and water content of the corresponding variety. The trait information of each variety of standard grain and the collection process of the terahertz...

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Abstract

The invention provides a cereal freshness detecting method and device. According to the method, acquired character information of standard cereals with different varieties and terahertz transmission spectra obtained after tabletting the standard cereals are stored, and a standard spectrum library is built; performing Fourier transformation on the acquired time-domain spectroscopy of the tabletting terahertz spectrum of one sample cereal to be detected, so as to obtain a terahertz spectrum chart, and calculating to obtain corresponding refractive index spectrum and absorption coefficient spectrum; calculating mean square errors and correlation coefficients for the calculation results and each standard data set of the standard spectrum library, and taking the character information corresponding to the standard data sets with the smallest mean square error and the greatest correlation coefficient as the terahertz spectrum detection conclusion of the sample cereal to be detected. The cereal freshness detecting device corresponds to the cereal freshness detecting method. As terahertz is very safe, is extremely small in photon radiation energy and cannot injure human bodies, the method and the device are suitable for field detection on grain quality, the detection accuracy is high, and the effect is good.

Description

technical field [0001] The invention belongs to the technical field of food detection, and in particular relates to a method and device for detecting freshness of grains. Background technique [0002] my country's stored grains are mainly grains such as wheat, rice, and corn. Since these grains have a fixed standard storage time, the quality and taste of the grains will change significantly after the storage time is exceeded. Among them, especially rice, because the storage period is only one year, it is easy to exceed the standard and exceed the time. Therefore, it is necessary to know the quality changes of stored grains in a timely and accurate manner, and to deal with the stored rice whose quality has changed or is about to change in time. [0003] For the identification of grain quality, it is not accurate to use biochemical detection methods for identification. The main biochemical detection method is to identify the composition of the grain, and there are many differ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3586
Inventor 廉飞宇葛宏义李卫东蒋玉英付麦霞琚新刚赵中原
Owner HENAN UNIVERSITY OF TECHNOLOGY
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