Adaptive Quality Estimation From Density and Temperature Data
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Solution Overview
Problem
Existing methods for estimating quality parameters of processed organic substances, such as tall oil and heavy gas oil, are costly and require information like harvest time, which may not always be available, limiting their accuracy and efficiency.
Innovation Solution
A method that repeatedly measures density and temperature, computes quality parameter estimates using an estimation formula updated with laboratory test results, allowing for accurate estimation without needing harvest time information or other unavailable data, and controls processing conditions based on these estimates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If NIR spectroscopy is used to obtain quality parameters, then measurement precision is improved, but investment costs and operational costs increase significantly
Solution Approach 1:
The patent replaces expensive NIR spectroscopy equipment with a cost-effective solution using simple density and temperature measurements combined with regression models. This approach uses inexpensive, readily available measurement tools rather than costly specialized equipment, achieving acceptable measurement precision at significantly lower investment and operational costs.
Solution Approach 2:
The patent substitutes complex optical measurement systems (NIR spectroscopy) with simpler physical measurement approaches based on density and temperature measurements. By using regression models to infer quality parameters from these basic measurements, the system replaces expensive mechanical/optical equipment with affordable sensors and computational methods.
2Device complexity
If fixed-parameter regression models are used with density and temperature measurements, then costs are reduced, but measurement precision deteriorates due to model obsolescence
Solution Approach 1:
The patent transforms static fixed-parameter regression models into dynamic adaptive models that continuously update their parameters using new measurement data. This allows the model to adapt to changing feedstock properties and process conditions, maintaining measurement precision over time without requiring complete re-modeling, thus balancing low costs with sustained accuracy.
Solution Approach 2:
The patent implements a feedback mechanism where new density and temperature measurements are continuously used to update the regression model parameters. This closed-loop approach ensures the model remains accurate by incorporating latest data, preventing model obsolescence while maintaining cost-effectiveness compared to expensive alternative methods.
3Measurement precision
If harvest time information is used to improve accuracy of quality parameter estimation, then measurement precision is improved, but reliability deteriorates because this information is not always available
Solution Approach 1:
The patent extracts and removes the dependency on unavailable harvest time information from the quality parameter estimation process. By developing regression models that rely solely on readily available density and temperature measurements, the system eliminates the need for external information that may not be accessible, ensuring reliable operation while maintaining acceptable measurement precision.
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
This approach maintains accuracy without re-modeling, reduces costs significantly compared to NIR spectroscopy, and allows for effective process control in organic substance processing without relying on unavailable data.
Implementation Method 1
repeatedly measuring density and temperature of the product or the feed
Implementation Method 2
repeatedly measuring density and temperature of the product or the feed
Data Source
AI summary
An apparatus for estimating a quality parameter related to a product or a feed of processing of organic substances includes measurement devices for measuring density and temperature of the product or the feed. A data processing system computes an estimate for the quality parameter based on an estimation formula whose input variables include the measured density and temperature. The data processing system repeatedly updates the model parameters of the estimation formula based on received laboratory test results and on densities and temperatures of the product or the feed.


