Patent ID: 11906423
Assignee: MARATHON PETROLEUM COMPANY LP
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. A spectroscopic analyzer controller to determine and use standardized analyzer spectral responses to enhance a process for calibration of a plurality of spectroscopic analyzers such that for a given material each of the plurality of spectroscopic analyzers outputs a plurality of signals indicative of a plurality of material properties of the material, the plurality of material properties of the material output by each of the plurality of spectroscopic analyzers being substantially consistent with one another, the spectroscopic analyzer controller being configured to:
receive one or more signals from a first spectroscopic analyzer when in a first state during a first-state time period;
output, based at least in part on the one or more signals received from the first spectroscopic analyzer when in the first state during the first-state time period, first-state sample spectra for each of a selected plurality of multi-component samples;
determine one or more spectral models based at least in part on the first-state sample spectra and corresponding sample data;
output, based at least in part on one or more signals received from the first spectroscopic analyzer when in the first state, a standardized analyzer spectra portfolio for a selected one or more first-state portfolio samples, the standardized analyzer spectra portfolio including a first-state portfolio sample spectrum for each of the first-state portfolio samples;
output, based at least in part on one or more signals received from the first spectroscopic analyzer when in a second state during a second-state time period, a second-state portfolio spectrum for each of a selected one or more second-state portfolio samples, each of the second-state portfolio sample spectra being associated with a corresponding second-state portfolio sample, the multi-component samples including a greater number of samples than a number of samples included in the second-state portfolio samples, and the second-state time period for analyzing the second-state portfolio samples being less than the first-state time period;
compare one or more of the second-state portfolio sample spectra for the selected one or more second-state portfolio samples to a set of first-state sample spectra of a selected plurality of corresponding first-state portfolio samples of the first spectroscopic analyzer as analyzed and output when in the first state during the first-state time period, each of the first-state portfolio sample spectra being associated with a corresponding first-state portfolio sample;
determine, based at least in part on the compare, for the one or more of the selected one or more second-state portfolio samples of the second-state portfolio sample spectra, a variance, at one or more of (a) a plurality of wavelengths or (b) over a range of wavelengths, between the first-state portfolio sample spectra of the standardized analyzer spectra portfolio and the second-state portfolio sample spectra output by the first spectroscopic analyzer when in the second state;
reduce the variance based at least in part on the standardized analyzer spectra portfolio;
receive one or more signals from the first spectroscopic analyzer indicative of a material received from a material source;
analyze, when in the second state, the one or more signals from received from the first spectroscopic analyzer indicative of the material received from the material source;
transform, based at least in part on the standardized analyzer spectra portfolio, the material spectrum to output a corrected material spectrum for the material when in the second state, the corrected material spectrum including one or more of (a) an absorption-corrected spectrum, (b) a transmittance-corrected spectrum, (c) a transflectance-corrected spectrum, (d) a reflectance-corrected spectrum, or (e) an intensity-corrected spectrum, thereby to define a standardized spectrum;
transfer one or more spectral models from the first spectroscopic analyzer when in the first state to a second spectroscopic analyzer; and
determine portfolio sample-based corrections for the second spectroscopic analyzer based at least in part on the standardized analyzer spectra portfolio and the second-state portfolio sample spectra, thereby to standardize the second spectroscopic analyzer.