Patent ID: 11860069
Assignee: MARATHON PETROLEUM COMPANY LP
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 16:
17. A spectroscopic analyzer assembly 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 assembly comprising:
a first spectroscopic analyzer;
a first analyzer controller in communication with the first spectroscopic analyzer, the first analyzer controller being configured to:
output, based at least in part on one or more signals received from the first spectroscopic analyzer when in the first state during a 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 comprising 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 the 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 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 comparing, 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 plurality of wavelengths or over a range of wavelengths, between the second-state portfolio sample spectra output by the first spectroscopic analyzer when in the second state and the first-state portfolio sample spectra of the standardized analyzer spectra portfolio, the standardized analyzer spectra portfolio to be used to reduce the variance between the second-state portfolio sample spectra and the first-state portfolio sample spectra
analyze, when in the second state, a material received from a material source to output a material spectrum, and
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 an absorption-corrected spectrum, a transmittance-corrected spectrum, a transflectance-corrected spectrum, a reflectance-corrected spectrum, or an intensity-corrected spectrum, and the corrected material spectrum defining a standardized spectrum; and

a second spectroscopic analyzer in communication with one or more of the first analyzer controller or a second analyzer controller, the first analyzer controller further being configured to:
transfer one or more spectral models from the first spectroscopic analyzer when in the first state to the second analyzer controller, 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, so as to define the second spectroscopic analyzer as being in the second state.