Wild gentiana rigescens LIBS identification method and system

Abstract

The invention relates to a wild gentiana rigescens LIBS identification method and system. The method comprises the following steps: obtaining a tabletting sample of a gentiana rigescens plant to be detected; determining a laser-induced breakdown spectrum of the tabletting sample by using a laser-induced breakdown spectrometer; determining an effective excitation peak of the laser-induced breakdownspectrum by utilizing a finpaks algorithm in matlab and an effective excitation peak threshold value according to the laser-induced breakdown spectrum; determining a reconstructed laser-induced breakdown spectrum according to an effective excitation peak in the laser-induced breakdown spectrum; and determining an identification result according to the reconstructed laser-induced breakdown spectrum and an identification model. According to the method and the system, the wild gentiana riparia can be quickly and accurately identified.

Description

technical field [0001] The invention relates to the field of spectrum detection, in particular to a method and system for identifying wild Gentiana yunnanensis LIBS. Background technique [0002] Plants of the genus Gentiana (Gentiana) mostly grow in high mountains or plateaus, where the climate conditions are extreme and changeable. Due to the differences in the growth environment and growth years of Yunnan Gentiana, there are obvious differences between domestic species and wild species in some aspects. , in appearance, the home-grown ones are fat and loose, while the wild ones are thin and firm. The wild ones generally have a longer growth period, with balanced and rich ingredients, and better curative effect. The home-grown medicinal materials have problems such as irregular planting techniques and hormone abuse. Therefore, The wild identification of Gentiana yunnanensis, a traditional Chinese medicinal material, is particularly important. [0003] In terms of tradition...

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Problems solved by technology

[0003] In terms of traditional technical means, the quality of Chinese herbal medicines is mainly determined by chemical methods to measure the composition ratio and content of various nutritional components in herbal medicines. This method has good repeatability. The accuracy is high, but the labor cost is high, the operation is complicated, and it takes a long time from sampling to result output, which cannot meet the needs of real-time and rapid detection in the market

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