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Laser induced spectrum data processing method based on wavelet analysis

A laser-induced spectrum and data processing technology, applied in the field of spectrum analysis, can solve problems such as the influence of laser-induced spectrum analysis results, and achieve the effects of improving lifespan, improving accuracy, and reducing the number of excitations

Inactive Publication Date: 2010-03-10
太原海通智慧信息技术有限公司 +1
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Problems solved by technology

[0005] The present invention provides a laser-induced spectral data processing method based on wavelet analysis in order to solve the problems that the current laser-induced spectral analysis results are affected by invalid measurement data.

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  • Laser induced spectrum data processing method based on wavelet analysis
  • Laser induced spectrum data processing method based on wavelet analysis
  • Laser induced spectrum data processing method based on wavelet analysis

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Embodiment Construction

[0031] A laser-induced spectral data processing method based on wavelet analysis, comprising the following steps:

[0032] 1) Valid measurement mode class template G m Get steps like figure 1 shown;

[0033] a. Carry out m times of laser-induced spectral measurements on n standard samples in the standard sample group of the substance to be tested, and sequentially record the spectral measurement data G corresponding to each standard sample i，j (like image 3 Shown), constitute the standard sample spectral measurement data set G={G i，j}, where, i=1, 2,..., n, j=1, 2,..., m, G i，j Indicates the spectral measurement data obtained from the jth laser-induced spectral measurement of the standard sample i, and the spectral measurement data G i，j Expressed sequentially: G i，j (k)=[X 1 , X 2 ,…X k ,…X N ], N is the sequence length; wherein, the number of times m of laser-induced spectral measurement of the standard sample of the substance to be measured is generally greater t...

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Abstract

The invention relates to the technical field of spectral analysis, in particular to a laser induced spectrum data processing method based on wavelet analysis, which can improve the spectral analysis precision and efficiency and solve the problems that the current laser induced spectrum analysis results are influenced by ineffective measurement data, and the like. The laser induced spectrum data treatment method based on wavelet analysis comprises the following steps: (1) acquiring an effective measurement pattern template G<m>, extracting the effective measurement pattern template when a substance standard sample to be measured is calibrated, and carrying out calibration operation with the corresponding measurement data of the effective measurement pattern template to acquire calibration parameters; and (2) processing actual spectrum measurement data of the measured sample, comparing the actually measured spectrum data with the effective measurement pattern template in actual measurement, keeping the effective spectrum measurement data, and calculating the effective measurement spectrum data based on the calibration parameters to obtain the element content information of the measured sample. The invention can effectively improve the measurement precision, and acquire the effective measurement data of required number based on laser excitation measurement of limited number of time, thereby effectively prolonging the service life of a laser measurement system.

Description

technical field [0001] The invention relates to the technical field of spectral analysis, in particular to a laser-induced spectral data processing method based on wavelet analysis that can improve the accuracy and efficiency of spectral analysis. Background technique [0002] Laser Induced Breakdown Spectroscopy (LIBS) is an atomic emission spectroscopic analysis technique that uses laser to excite matter to generate plasma, and obtains information on the content of material elements by analyzing the plasma luminescence spectrum. LIBS technology has the advantages of simple sample preparation, multi-element simultaneous analysis, fast analysis speed, and long-distance analysis. Therefore, it is widely used in qualitative or quantitative analysis of various substances and has great practical value. [0003] However, due to the characteristics of laser plasma are easily interfered by the matrix effect and some unavoidable objective factors, such as laser intensity pulsation, ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/63
Inventor 贾锁堂张生俊尹王保阎高伟王红兵李平柱罗振红王学钦张雷
Owner 太原海通智慧信息技术有限公司
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