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Method and system for detecting genuine nature of ginseng based on terahertz time-domain spectroscopy technology

A technology of terahertz time domain and spectral technology, which is applied in the field of ginseng road geophysical detection, can solve the problems of cumbersome operation, limited promotion, time-consuming and other problems, and achieve the effect of not easy over-fitting, good generalization performance and high accuracy rate

Pending Publication Date: 2021-04-16
SHANDONG ACAD OF SCI INST OF AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Ultraviolet spectroscopy is also a commonly used means of substance spectrum detection. It has high precision in quantitative analysis, but due to its high photon energy, it will decompose some active substances, so its promotion in drug detection is also limited.
Microbiological method is to use drugs to inhibit the growth of microorganisms to achieve the purpose of detection. Although the microbial method has high accuracy, it is difficult to use in large quantities because of its cumbersome operation, time-consuming, and high requirements for the quality of operators. The detection of drugs is only suitable for random inspection

Method used

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  • Method and system for detecting genuine nature of ginseng based on terahertz time-domain spectroscopy technology
  • Method and system for detecting genuine nature of ginseng based on terahertz time-domain spectroscopy technology
  • Method and system for detecting genuine nature of ginseng based on terahertz time-domain spectroscopy technology

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Embodiment 1

[0031] In one or more implementations, a method for detecting ground nature of ginseng roads based on terahertz time-domain spectroscopy technology is disclosed, referring to figure 2 , including the following procedures:

[0032] (1) Obtain a ginseng sample to be detected;

[0033] Specifically, to prepare samples for terahertz spectroscopy, ginseng was powdered, sieved, and pressed into thin slices with parallel surfaces by a tablet machine. Before the test, the sample was dried to eliminate the influence of water in the sample on the experimental results.

[0034] (2) measuring the terahertz time-domain signal and the terahertz spectrum of the ginseng sample, and calculating the extinction coefficient of the sample;

[0035] Terahertz (THz) wave is electromagnetic radiation (0.1-10THz) with a frequency between microwave and light wave. The frequency band covers the vibration and rotation energy levels of many macromolecules. The difference has a strong sensitivity, so t...

Embodiment 2

[0063] In one or more embodiments, a ginseng road geology detection system based on terahertz time-domain spectroscopy technology is disclosed, including:

[0064] The sample acquisition module is used to obtain the ginseng sample to be detected;

[0065] The data processing module is used to measure the terahertz time-domain signal and terahertz spectrum of the ginseng sample, and calculate the extinction coefficient of the sample;

[0066] The data prediction module is used to input the extinction coefficient into the trained ginseng origin prediction model, and output the origin information of the ginseng samples to be detected.

[0067] It should be noted here that the specific implementation manners of the above-mentioned modules are implemented using the methods disclosed in the first embodiment, but are not limited to the content disclosed in the first embodiment.

[0068] The description of each embodiment in the foregoing embodiments has its own emphases, and for par...

Embodiment 3

[0071] This embodiment also provides a terminal device, including: one or more processors, one or more memories, and one or more computer programs; wherein, the processor is connected to the memory, and the one or more computer programs are executed by Stored in the memory, when the electronic device is running, the processor executes one or more computer programs stored in the memory, so that the electronic device executes the method described in Embodiment 1 above.

[0072] It should be understood that in this embodiment, the processor can be a central processing unit CPU, and the processor can also be other general-purpose processors, digital signal processors DSP, application specific integrated circuits ASIC, off-the-shelf programmable gate array FPGA or other programmable logic devices , discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or ...

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Abstract

The invention discloses a method and a system for detecting genuine nature of ginseng based on a terahertz time-domain spectroscopy technology. The method comprises the following steps: acquiring a to-be-detected ginseng sample; measuring the thickness, the terahertz time domain signal and the terahertz spectrum of the ginseng sample, and calculating the extinction coefficient of the sample; inputting the extinction coefficient into a trained ginseng origin prediction model, and outputting origin information of the ginseng sample to be detected. The method has the advantages that the strong penetrability and fingerprint spectrum characteristics of terahertz are utilized, the terahertz time-domain spectroscopy technology is combined with machine learning, a supervised multi-classification prediction model is established, model hyper-parameters are optimized through an optimization algorithm, the ginseng producing area prediction model which is high in accuracy, good in generalization performance, not prone to over-fitting and good in anti-noise performance is established.

Description

technical field [0001] The present invention relates to the technical field of spectrum detection, in particular to a method and system for detecting ground properties of ginseng roads based on terahertz time-domain spectroscopy technology. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Ginseng is a good medicine for health preservation and treatment of diseases, and is widely used clinically. Among them, those produced in the Changbai Mountain region of Northeast China are called ginseng, and those produced in North American countries such as Canada and the United States are called American ginseng. The origin of ginseng is different, its external shape, internal structure and physiological and biochemical components are different, and its curative effect is also significantly different. If it is used upside down, it will be counterpro...

Claims

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Application Information

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IPC IPC(8): G01N21/3586G01N21/3563G01N1/28
Inventor 刘陵玉常天英李羿璋张献生崔洪亮
Owner SHANDONG ACAD OF SCI INST OF AUTOMATION
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