Method and device for measuring characteristics of a sample
First Claim
1. Method for measuring characteristics of a sample by spectral analysis, comprising:
- calculating the characteristics from spectral data obtained from the spectral analysis using a calibration model that has been established on the basis of reference samples;
performing an additional calculation of the characteristics of the sample based on the same spectral data using at least one additional calibration model that has been established on the basis of additional reference samples; and
determining and outputting deviations between the characteristics calculated by the respective calibration models, to permit an evaluation of the quality of the measurement.
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Abstract
A method and a device for measuring the characteristics of a sample by spectral analysis. According to the method, the characteristics are calculated from the spectral data obtained by the spectral analysis, using a calibration model that has been established on the basis of reference samples. In order to improve the stability of the measuring process, an additional calculation of the characteristics (16) of the samples (1) takes place, using at least one additional calibration model (14) that has been established on the basis of additional reference samples (1″). Deviations between the characteristics (12, 16) calculated by the respective calibration models (11, 14) are determined and output.
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Citations
18 Claims
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1. Method for measuring characteristics of a sample by spectral analysis, comprising:
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calculating the characteristics from spectral data obtained from the spectral analysis using a calibration model that has been established on the basis of reference samples;
performing an additional calculation of the characteristics of the sample based on the same spectral data using at least one additional calibration model that has been established on the basis of additional reference samples; and
determining and outputting deviations between the characteristics calculated by the respective calibration models, to permit an evaluation of the quality of the measurement. - View Dependent Claims (2, 3, 4, 5, 6)
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7. Device for measuring characteristics of a sample comprising:
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a spectrometer for spectral analysis of the sample;
a calibration model that has been established on the basis of reference samples and that calculates the characteristics from spectral data supplied by said spectrometer;
at least one additional calibration model that has been established on the basis of additional reference samples and that performs an additional calculation of the characteristics; and
a comparator arranged downstream from said calibration models, which determines deviations between the characteristics calculated by said respective calibration models. - View Dependent Claims (8, 9)
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10. A method for measuring at least one characteristic of a sample by spectral analysis, comprising:
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obtaining spectral data from a spectral analysis of the sample;
performing a first calculation of the characteristic of the sample from the spectral data obtained using a first calibration model that has been established on the basis of reference samples;
performing an additional calculation of the characteristic of the sample from the same spectral data using at least one different calibration model that has been established on the basis of at least partly differing reference samples; and
comparing the characteristics calculated, respectively, by the first calibration model and the different calibration model. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A system for measuring at least one characteristic of a sample, comprising:
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a spectrometer configured to output spectral data for the sample;
a first calibration model established on the basis of reference samples and configured to calculate the characteristic from the spectral data;
at least one additional calibration model established on the basis of at least partly differing reference samples and configured to calculate the characteristics from the spectral data; and
a unit having inputs for the calculated characteristics of said first and said second calibration models and configured to output a comparison result of the calculated characteristics. - View Dependent Claims (17, 18)
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Specification