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Method and system for identifying consistency of articles by using Raman spectroscopy

A Raman spectrum and Raman spectrum detection technology, applied in the field of item consistency identification, can solve the problems of indistinguishable identification of item consistency, small spectral difference, unknown location of Raman spectrum difference, etc., to facilitate sample consistency detection and the effect of recognition

Inactive Publication Date: 2016-05-25
INSPECTION & QUARANTINE TECH CENT OF XIAMEN ENTRY EXIT INSPECTION & QUARANTINE BUREAU +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to provide a Raman spectrum identification article that can solve the problem of 1) the location where the difference between the Raman spectra of the two samples is unknown in advance; consistent approach

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  • Method and system for identifying consistency of articles by using Raman spectroscopy
  • Method and system for identifying consistency of articles by using Raman spectroscopy
  • Method and system for identifying consistency of articles by using Raman spectroscopy

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Embodiment Construction

[0035] In order to make the technical solution of the present invention clearer, the present invention will be described in further detail in conjunction with embodiment and accompanying drawing now:

[0036] A system for detecting the consistency of items through Raman spectroscopy, including a Raman spectroscopy measurement system, the measurement system includes an excitation light source, an optical fiber or a beam transmission optical path, a detection probe containing a wavelength selection filter, a spectrum detection unit, and a signal processing and display, also includes a measurement module, the measurement module includes a data collection module for collecting spectral data fed back by the spectral measurement system, a data processing module for similarity calculation, a data result display module, and the data collection module Has a movable measurement interval.

[0037] The workflow of this system is as follows:

[0038] The system light source emits a specif...

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Abstract

The invention provides a method and system for identifying consistency of articles by using Raman spectroscopy. The method comprises the following steps: 1) acquiring the spectral data of different samples by using a spectrometer; 2) preprocessing the acquired spectral data; 3) setting a spectral interval and separately calculating similarity of local spectral intervals at different wave number positions; 4) acquiring a curve representing changes of local spectral similarity with wave numbers of Raman spectra; and 5) determining consistency of the articles according to the curve.

Description

technical field [0001] The invention relates to the field of item consistency identification, in particular to a method and system for identifying item consistency using Raman spectroscopy. technical background [0002] The Raman effect was discovered experimentally by C.V.Raman in 1928. When a laser beam is incident on the object under test, due to the elastic and inelastic collisions between the incident photons and the molecules that make up the substance, the light waves reflected and scattered from the substance contain signals of the same frequency as the incident light and different frequencies. The signal of frequency change is caused by the vibration and rotational energy levels of the material molecules. This frequency change has nothing to do with the frequency of the incident light, but is determined by the molecules that make up the substance. Therefore, the Raman spectrum of each substance is unique. By comparing the measured Raman spectrum with the spectrum ...

Claims

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Application Information

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IPC IPC(8): G01N21/65
CPCG01N21/65
Inventor 吴兆喜董小鹏赖博文陆豆
Owner INSPECTION & QUARANTINE TECH CENT OF XIAMEN ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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