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A Spectral Data Correction Method Based on Weight Coefficient

A technology of spectral data and weight coefficients, applied in color/spectral characteristic measurement, material analysis through optical means, instruments, etc., can solve problems such as difficult correction of near-infrared spectral data, achieve easy implementation, solve difficult corrections, and improve quality Effect

Active Publication Date: 2022-02-01
SICHUAN CHANGHONG ELECTRIC CO LTD
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings in the above-mentioned background technology, and provide a spectral data correction method based on weight coefficients, which can effectively correct portable near-infrared spectral data at different time points, thereby improving the quality of the spectral model, and at the same time, it is easy to implement and extremely To a large extent, it solves the problem that the portable near-infrared spectroscopy data at different time points is difficult to correct

Method used

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  • A Spectral Data Correction Method Based on Weight Coefficient
  • A Spectral Data Correction Method Based on Weight Coefficient
  • A Spectral Data Correction Method Based on Weight Coefficient

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Embodiment 1

[0058] Such as figure 1 As shown, a spectral data correction method based on weight coefficients includes the following steps:

[0059] Steps 101 and 102. Collect the spectral data of the black, white and gray calibration plates and the sample to be tested at preset intervals within the collection cycle, wherein the spectral data collected for the first time is set as the reference value spectral data , and set the spectral data collected later as the original complex-valued spectral data.

[0060] Specifically, in order to reflect the correction effect to the greatest extent and be easy to implement, in this embodiment, a collection cycle is set to 14 days, and the corresponding spectral data are collected every day, wherein the spectral data collected on the first day Set it as the reference value spectral data, and set the 13 sets of data collected on the 2nd to 14th days as the original complex valued spectral data corresponding to the day of collection.

[0061] Step 10...

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Abstract

The invention discloses a spectral data correction method based on weight coefficients. Firstly, the spectral magnification values ​​at different time points are calculated through the reference value and complex value of the black, white, and gray calibration plates, and then according to the black, white, and gray calibration plates The weight coefficient of each calibration plate is calculated according to the reflectance relationship of the sample to be tested, and then the spectral correction formula is obtained. Then, the complex-valued spectral data of the sample to be tested is corrected by combining the spectral magnification value of the black, white, and gray calibration plates and the spectral correction formula. , and finally, the benchmark value of the spectral data of the sample to be tested is integrated with the original complex value and the corrected complex value to model, and the quality of the two models is judged respectively. The method of the present invention fully combines the characteristics of portable near-infrared spectral data, can effectively correct portable near-infrared spectral data at different time points, thereby improving the quality of the spectral model, and is easy to implement, greatly solving the problem of portable near-infrared spectral data at different time points Problems that are difficult to correct for near-infrared spectral data.

Description

technical field [0001] The invention relates to the technical field of spectral data correction, in particular to a spectral data correction method based on weight coefficients. Background technique [0002] In recent years, near-infrared spectroscopy has developed rapidly and has been applied in many fields such as chemical industry, pharmaceuticals, military industry, and food. Near-infrared spectroscopy belongs to molecular spectroscopy, which can indicate material composition and property information at the molecular level. It has achieved very high benefits and great development potential in terms of economic and social impacts. [0003] However, at present, most of the detection of material composition and property information is mainly carried out by large-scale laboratory near-infrared spectroscopy instruments. Although these methods are quantitatively accurate and sensitive, the equipment required is bulky and expensive, and the sample preparation time is long and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/359G01N21/27
CPCG01N21/359G01N21/274
Inventor 刘浩闫晓剑张国宏王毅
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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