System and method for detecting and identifying Chinese herbal medicine

A Chinese herbal medicine and device technology, applied in the field of Chinese herbal medicine detection and identification, can solve problems such as the ineffectiveness of identification methods, and achieve the effects of accurate identification and detection results, and simple detection and identification processes.

Active Publication Date: 2011-09-07
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology

[0006] From the above analysis, it can be seen that the identification of Chinese herbal medicines is moving in a fast and accurate direction, and the traditional identification methods are gradually

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  • System and method for detecting and identifying Chinese herbal medicine
  • System and method for detecting and identifying Chinese herbal medicine
  • System and method for detecting and identifying Chinese herbal medicine

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Embodiment Construction

[0043] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0044] Such as figure 1 and figure 2 As shown, a system for detecting and identifying Chinese herbal medicines includes the following parts:

[0045] The Ti:Sapphire femtosecond laser 1 is used to generate femtosecond laser, and on the optical path between the Ti:Sapphire femtosecond laser 1 and the semiconductor terahertz radiation device (in this embodiment, gallium arsenide m-i-n diode 8, also includes a pulse A semi-reflective and semi-transparent beam splitter 3 for splitting the laser light into the optical path of the pump light and the optical path of the probe light;

[0046] The optical light path alignment device includes: the first focusing lens 61 and the first reflector 71 which are sequentially located on the pump light path, the second collimating lens 62, the second reflector 72, and the high-resistance silicon reflector on the pro...

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Abstract

The invention relates to a system and a method for detecting and identifying Chinese herbal medicine. In the invention, terahertz which is radiated from gallium arsenide under the excitation of femto-second laser is used for researching Chinese herbal medicine so as to achieve the purpose of distinguishing true and false Chinese herbal medicine and detecting the quality of the Chinese herbal medicine. In the system and the method, the femto-second laser is divided into pump light and detection light by a beam splitter; after being modulated by a chopper and an attenuator, the pump light is focused by a focusing lens onto the gallium arsenide to give off the terahertz; the radiated terahertz is focused onto a tested Chinese herbal medicine sample by two parabolic mirrors; a terahertz signal with Chinese herbal medicine information is collected and focused onto an electro-optic crystal by another two parabolic mirrors; and detection light is also focused onto the electro-optic crystal by a delay device so as to detect the terahertz signal with the Chinese herbal medicine information. The corresponding terahertz absorption spectrum is calculated after Fourier transform, and then the Chinese herbal medicine can be quickly and effectively identified and screened by a support vector machine method.

Description

technical field [0001] The invention belongs to the technical field of detection and identification of Chinese herbal medicines, and in particular relates to a detection and identification system and method for judging the similarity, authenticity, and the same category but different quality of Chinese herbal medicines. Background technique [0002] Chinese herbal medicine is a great treasure of the Chinese nation. It is a tradition in our country to use Chinese herbal medicine to treat diseases, especially for some chronic diseases and consumptive diseases, which play an important role that Western medicine cannot replace. However, there are many kinds of Chinese herbal medicines, their quality is uneven, and the true and false are different. Their curative effects are directly related to the quality and types of Chinese herbal medicines. How to accurately, quickly and effectively identify Chinese herbal medicines has become a new hot spot. [0003] The identification meth...

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Application Information

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IPC IPC(8): G01N21/31
Inventor 朱亦鸣李洪曹剑炜杜少卿谢乐陈麟彭滟
Owner UNIV OF SHANGHAI FOR SCI & TECH
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