SYSTEMS AND METHODS FOR PREDICTING SAMPLE PROPERTIES BASED ON SPECTRAL MEASUREMENTS

    公开(公告)号:US20230194424A1

    公开(公告)日:2023-06-22

    申请号:US18067548

    申请日:2022-12-16

    CPC classification number: G01N21/359 G01N21/274 G01J3/28

    Abstract: Techniques are disclosed for predicting a property value of a sample of a particular sample type. A wavelet transformation is applied to the obtained spectrum to compute a sample set of wavelet coefficients in a plurality of wavelet bands. Calibration sets of wavelet coefficients are computed by wavelet transformations of respective NIR/MIR spectra obtained from calibration samples of at least the particular sample type. Each calibration set is associated with one or more reference property values of the respective calibration sample. The system creates a local PLS model of the to-be-determined property value of said sample by selecting a predefined number k of nearest neighbors of the sample set, and computes the local PLS model based on the selected k nearest neighbors and their associated reference property values. The property value of said sample is predicted by applying the local PLS model to the sample set.

    Spectrometer
    22.
    发明公开
    Spectrometer 审中-公开

    公开(公告)号:US20230168125A1

    公开(公告)日:2023-06-01

    申请号:US17917002

    申请日:2020-10-30

    CPC classification number: G01J3/28 G01J3/18 G01J2003/2859

    Abstract: A mode of a spectrometer according to the present invention includes a spectrum measurement unit (11, 12) configured to repeatedly measure a spectrum over a predetermined wavelength range for measurement target light that is laser light; a peak counting unit (21, 22) configured to, every time a spectrum is obtained by the spectrum measurement unit, detect a peak from the spectrum and count the number of detected peaks; and a display processing unit (24) configured to display a numerical value of a peak counting result by the peak counting unit on a screen of a display unit in real time. With the spectrometer of the above mode, adjustment and the like of the multimode laser oscillator can be efficiently and accurately performed.

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