Microwave Resonator Mixture Measurement Under Fluctuating Moisture

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing methods for measuring substance quantities in mixtures of two substances using a microwave resonator are underdetermined when one component fluctuates significantly, making it difficult to independently determine moisture and other substance quantities.

Innovation Solution

A method that determines two moisture values for each substance in the mixture, calculates scalar factors from the measured resonance frequency shift and resonance curve width, and uses these factors to accurately determine the substance quantities, optionally with temperature correction and calibration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a two-parameter microwave resonator method is used to measure substance quantities in a mixture, then the measurement process is simple, but the measurement becomes underdetermined when one substance component fluctuates significantly

Engineering Contradiction:

Improvemeasurement method complexityVSAvoidsubstance quantity determination accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The patent transitions from a two-parameter measurement space to a three-parameter measurement space by introducing temperature as an additional measurement dimension. This allows the system to resolve the underdetermined measurement problem when substance components fluctuate, as the temperature parameter provides an additional equation to solve for multiple unknowns while maintaining relative simplicity of the measurement approach.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent changes the measurement parameters from just resonance frequency and quality factor to include temperature as a third parameter. By measuring temperature in addition to the traditional microwave resonator parameters, the system can accurately determine substance quantities even when components fluctuate, resolving the underdetermined system without significantly increasing device complexity.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If moisture values of substance components are allowed to fluctuate freely, then the measurement reflects real conditions, but the measurement task becomes underdetermined and inaccurate

Engineering Contradiction:

Improvemeasurement adaptability to varying conditionsVSAvoidsubstance quantity determination accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent implements a feedback mechanism where temperature measurements are continuously incorporated into the calculation process. The temperature data feeds back into the measurement model to adjust and resolve the substance quantity calculations, allowing the system to maintain accuracy despite fluctuations in moisture values of the substance components.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent performs preliminary measurement of temperature and moisture values before conducting the main substance quantity determination. This preliminary action provides additional known parameters that help resolve the measurement equations, allowing accurate determination of substance quantities even when moisture values fluctuate during the measurement process.

Inventive Principle:

Principle #10Preliminary action

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

Enables precise determination of substance quantities in mixtures with fluctuating components by using scalar factors and temperature considerations, improving measurement accuracy.

Implementation Method 1

measuring substance quantities in a substance mixture with two substances using a microwave resonator

Methodology Applied

Scientific EffectMicrowave resonance: Resonance

Implementation Method 2

determined, for example, from the quotient of the two measured quantities of the microwave resonator

Methodology Applied

Scientific EffectDielectric heating: Dielectric Heating

Data Source

PatentUS12429433B2Method for measuring substance quantities in a mixture

Publication Date: 2025.09.30 TEWS ELEKTRONIK GMBH & CO KG

AI summary

A method for measuring substance quantities in a substance mixture including two substances, the method comprises determining a first moisture value for a first of the two substances using a microwave resonator. A second moisture value for the second of the two substances I determined using a microwave resonator. A first measured value and a second measured value are determined for the substance mixture using a microwave resonator. Two scalar factors are determined for two moisture vectors from the first and the second measured values for the substance mixture. The two moisture vectors indicate a direction of a straight line of equal moisture for the first and second substances in a plane of the first and second measured values using the first and second moisture value. A quantity of the first substance and of the second substance in the substance mixture are determined from the two scalar factors.