Chemometric Model Determination via Spectral Data Combination

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Solution Overview

Problem

Current methods for determining chemometric models in Raman spectroscopy are resource-intensive and time-consuming, requiring multiple reactor runs and significant resources over long periods.

Innovation Solution

A computer-implemented method and system that combines first and second spectra datasets from Raman spectroscopy scans to determine chemometric models for unknown parameters of analytes, reducing the need for multiple reactor runs and improving efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If multiple reactor runs are performed to collect training data, then the chemometric model accuracy is improved, but the time and resources required increase significantly

Engineering Contradiction:
Improvechemometric model accuracyVSAvoidtime for reactor runs
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent applies preliminary action by performing reactor runs only for a limited number of distinct conditions (e.g., 3-5 runs) rather than exhaustively testing all possible conditions. The training data is collected under these preliminary conditions and used to build a chemometric model that can predict outcomes for additional conditions without requiring actual experimental runs for each condition, thus reducing time while maintaining adequate model accuracy.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent uses copying by creating a chemometric model that replicates or predicts the results of multiple reactor runs based on data from a smaller number of actual runs. The model copies the relationship between input parameters and spectral outputs, allowing virtual reproduction of data for conditions that were not physically tested, thereby reducing the number of required reactor runs while maintaining predictive accuracy.

Inventive Principle:
Principle #26Copying

2Measurement precision

If multiple reactor runs are performed to collect training data, then the chemometric model accuracy is improved, but the computational resources and cost increase

Engineering Contradiction:
Improvechemometric model accuracyVSAvoidcomputational resources
Core Design Contradiction:
Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent applies preliminary action by limiting the number of actual reactor runs to a small set of representative conditions. By collecting training data from only these preliminary runs and using it to build a chemometric model, the system avoids the need to perform exhaustive computational simulations for all possible conditions, thereby reducing computational resource consumption while maintaining adequate model accuracy for prediction.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent replaces mechanical/experimental reactor runs with a computational chemometric model once trained. After the model is built from limited training data, it can predict spectral outputs for various conditions through computation rather than requiring physical reactor runs, substituting mechanical experimentation with computational prediction and significantly reducing ongoing resource requirements.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If traditional spectroscopic methods are used, then the analysis can be performed, but the signal-to-noise ratio is insufficient for high sensitivity applications

Engineering Contradiction:
ImprovesensitivityVSAvoidsignal-to-noise ratio
Core Design Contradiction:
ReliabilityVSMeasurement precision

Solution Approach 1:

The patent applies feedback by using the chemometric model to continuously refine and improve the spectral analysis. The model processes spectral data and provides feedback about the quality of signals and the presence of analytes, enabling the system to distinguish between true signals and noise more effectively. This feedback mechanism enhances the signal-to-noise ratio and improves sensitivity for detecting analytes at low concentrations.

Inventive Principle:
Principle #23Feedback

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The method enables rapid and inexpensive determination of chemometric models with high signal-to-noise ratio, improving sensitivity and specificity compared to traditional methods.

Implementation Method 1

The laser light (also sometimes referred to as a Raman pump) interacts with the electron clouds in the molecules of the sample compound or substance and, as a result of this interaction, experiences selected wavelength shifting. A unique wavelength signature (typically called the Raman signature) is produced by each sample compound or substance.

Methodology Applied
Scientific EffectRaman scattering: Scattering

Data Source

PatentUS20250035554A1System and method for spectroscopic determination of a chemometric model from sample scans
Publication Date: 2025.01.30 THERMO SCIENTIFIC PORTABLE ANALYTICAL INSTRUMENTS INC
  • US20250035554A1 patent drawing
  • US20250035554A1 patent drawing
  • US20250035554A1 patent drawing

AI summary

A computer-implemented method and system are provided. An analytical instrument support system receives a first spectra dataset associated with scans of one or more first samples, the one or more first samples including a target analyte having one or more known levels of a parameter. The analytical instrument support system receives a second spectra dataset associated with scans of one or more second samples. The analytical instrument support system determines one or more spectra arrays by combining (i) the first spectra dataset and (ii) the second spectra dataset. The analytical instrument support system determines a chemometric model for one or more levels of the parameter of the target analyte based on, at least, the one or more spectra arrays and the one or more known levels of the parameter.