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A Raman spectrum matching method

A technology of Raman spectrum and matching method, applied in the field of Raman spectrum matching, can solve the problems of low matching accuracy of characteristic peaks, high false alarm rate of large sample size, and neglect of some characteristics of signals, so as to achieve low false alarm rate and improve matching The effect of precision

Active Publication Date: 2018-10-30
BEIJING HTNOVA DETECTION TECH CO LTD
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Problems solved by technology

[0006] In the existing methods, the matching accuracy of characteristic peaks is low, and the false alarm rate is high for large sample sizes; the correlation coefficient considers the overall matching factor, but ignores the characteristics of the signal part

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Embodiment Construction

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0033] figure 1 It is a flowchart of the Raman spectrum matching method in the present invention, and the Raman spectrum matching method includes:

[0034] Step 1, o...

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Abstract

The invention discloses a Raman spectrum matching method. The method comprises the following steps: 1, obtaining the Raman spectrum data of a substance to be measured; 2, judging that whether the current Raman spectrum data has extractable characteristic peaks or not, executing step 3 if so, and executing step 5 if not; 3, determining the main peak of the characteristic peaks of the current Raman spectrum data, determining a range of preset data points in the left direction and the right direction of the main peak adopted as a center as a main peak area of the current section, searching the characteristic peak matched with the main peak area, and calculating the weight and the correlation coefficient of the main peak area; 4, removing the main peak area of the current section from the current Raman spectrum data, and executing step 2; and 5, calculating the sum of the products of the weights and the correlation coefficients of all sections, and judging the matching degree by adopting a ratio of the product sum to the sum of the weights of all the sections as a final correlation coefficient. The method improves the matching precision and realizes low false alarm rate when the sample amount is large.

Description

technical field [0001] The invention relates to the technical field of Raman spectrum detection, in particular to a Raman spectrum matching method. Background technique [0002] The methods for material matching using Raman spectroscopy in the prior art mainly adopt the method of characteristic peak matching and the method of Raman spectral correlation coefficient matching. [0003] Regarding the method of characteristic peak matching, for example, in the rapid sample search method of Raman spectroscopy substance detection, the following steps are included: establishing a characteristic library; placing a sample of the substance to be detected in the spectrometer test area, and performing Raman spectrum collection; traversing this set of data Sequence, get the highest peak value Qmax of the sample to be detected, according to get the lowest peak value; within the range [Qmin, Qmax], get the position and peak value of each peak, and record the total number of peaks Mall at th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/65
CPCG01N21/65
Inventor 杜靖熊胜军赵喜夏征
Owner BEIJING HTNOVA DETECTION TECH CO LTD
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