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Method and apparatus for automatic calibration of spectrometers in chemometry by means of a bayes iterative estimation method

A technique of chemometrics and spectrometers, applied in the field of automatic calibration of spectrometers and systems in chemometrics with the help of Bayesian iterative estimation method, can solve the problems of different calibration quality, high cost and time, and achieve less calculation Amount, less time-consuming effect

Active Publication Date: 2011-05-11
ENDRESS HAUSER CONDUCTA GESELLSCHAFT FUER MESS UND REGELTECHNIK MBH CO KG
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Problems solved by technology

These known methods for correction are therefore costly and time-intensive and vary in their correction quality from person to person

Method used

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  • Method and apparatus for automatic calibration of spectrometers in chemometry by means of a bayes iterative estimation method
  • Method and apparatus for automatic calibration of spectrometers in chemometry by means of a bayes iterative estimation method
  • Method and apparatus for automatic calibration of spectrometers in chemometry by means of a bayes iterative estimation method

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Embodiment Construction

[0031] in the attached picture figure 1 An exemplary embodiment of a calibration system 10 according to the invention of a spectrometer device 1 is shown as a schematic block diagram. System 10 for calibrating spectrometer devices 1 according to this exemplary embodiment has as an essential component at least one spectrometer device 1 for measuring substances 4 or measuring objects and associated wavelengths and their intensities. The spectrometer device 1 may be any type of spectrometer device. According to the invention, in particular spectrometer devices are conventionally used in stoichiometry and in the analysis of stoichiometric data. According to the invention, for correcting the data of the spectroscopic measurement, that is to say the spectral component X to be measured and the associated substance concentration of the substance 4, a correction unit 2 is provided which operates in a novel way for automatic correction of the data or spectrometer device 1.

[0032] C...

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Abstract

An apparatus and also a method for calibration of a spectrometer for the measurement of spectral fractions of a substance (4) as a part of chemometry or chemometric processes are proposed, with a spectrometer device (1) for measuring of spectral fractions of the substance (4) to be analysed, and also with a calibration unit (2) used to carry out a calibration of the spectrometer device and / or of the measured data on the basis of measured spectrometric data, characterized by the following steps: a) measuring the totality of spectral fractions X and / or of associated substance concentrations of the substance (4) under analysis; b) Saving the totality of measured spectral fractions X in a memory module (3) as spectrometric measured data in the form of a multi-dimensional coefficient vector; c) From the totality of measured spectral fractions X, automatic extraction of spectral fractions Xrel physically relevant to the particular measuring process by means of an automatically running, iterative estimation method saved in the calibration unit (2); d) Calibration of the measured spectrometric data for the analysed substance (4) on the basis of spectral fractions Xrel of the spectrometric data extracted in step c) and which are physically relevant to the substance (4) under analysis.

Description

technical field [0001] The invention relates to a method and a system for calibrating spectrometers such as those used in chemical metrology. Spectrometers are used to examine substances or measurement objects, wherein spectral components of different wavelengths are detected and examined as spectroscopically measured data. The spectral range of the substance to be tested and the corresponding wavelengths of the spectral components can vary over a considerable wavelength range. Spectrometers detect spectral components of different wavelengths as a function of the respective intensities of the wavelengths, from which the composition of the substance under examination can be deduced. Background technique [0002] The present invention investigates the calibration of spectrometers of this type. In the prior art, it is known on the one hand to calibrate spectrometers or spectroscopic instruments by means of mechanical corrections and adjustments of the instrument or the device...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/28
CPCG01J3/28
Inventor 托马斯·阿尔伯埃丹·安杰利奇
Owner ENDRESS HAUSER CONDUCTA GESELLSCHAFT FUER MESS UND REGELTECHNIK MBH CO KG
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