A Spectral Data Calibration Method Based on Black and White Calibration Plate

Abstract

The invention discloses a method for calibrating spectral data based on a black and white calibration plate. First, the spectral data of the black and white calibration plates are collected respectively, and then the spectral data of the sample to be tested is collected and data modeling is performed, and recorded as spectral data X and spectral model M, then combine the spectral data of the black calibration plate and the spectral data X of the sample to calculate the actual spectral data Y of the sample to be tested, and combine the spectral data of the white calibration plate and the actual spectral data Y of the sample to calculate the actual reflectance H of the sample to be tested, and finally , the reflectance H is modeled by the same modeling method as the spectral model M, and the quality of the spectral model is judged by the model correlation coefficient and the root mean square error. The method of the invention can effectively calibrate the spectral data, thereby improving the quality of the spectral model and the accuracy of spectral prediction, and at the same time, it is easy to implement, and solves the problem that the portable near-infrared spectral data is difficult to calibrate to a great extent.

Description

Technical field [0001] The present invention relates to the field of spectral data calibration techniques, and more particularly to a spectral data calibration method based on a black and white calibration plate. Background technique [0002] In recent years, near-infrared spectral analysis technology has developed very rapidly, and it has been applied in various fields such as chemical, pharmaceutical, military, food and other fields. Near infrared spectroscopy is molecular spectroscopy, which can indicate material components and nature information on the molecular level. Regardless of economic or social impact, it has achieved very high efficiency, which has a very high effectiveness. [0003] However, most of the material components and nature information detection mainly use large laboratory near infrared spectroscopy instruments, although quantitative accurate sensitivity is high, but the required equipment is large, the equipment cost is expensive, the sample preparation ti...

AI Technical Summary

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 calibration method based on a black and white calibration board, which can effectively calibrate the spectral data, thereby improving the quality of the spectral model and the accuracy of spectral prediction, and at the same time, it is easy to implement and greatly To a certain extent, the problem of difficult calibration of portable near-infrared spectral data is solved

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