Multi-Mode Microwave Resonance for Position-Independent Mass and Moisture Measurement
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Solution Overview
Problem
Existing methods for measuring the mass and moisture of dielectric objects using microwave resonance are prone to inaccuracies due to dependence on object position, shape, and orientation, limiting measurement resolution and requiring format-dependent sample guiding and frequent apparatus adjustments.
Innovation Solution
The use of a microwave resonance apparatus with at least two independent resonance modes, where the electric fields are oriented vertically and independently in different spatial directions, allowing for position-independent measurement of mass and moisture by analyzing shifts and changes in resonance frequencies and curves, enabling accurate measurement of arbitrarily shaped objects without the need for format-dependent guiding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single resonance mode is used for measurement, then the device complexity is reduced, but the measurement precision deteriorates due to dependence on object position, shape, and orientation
Solution Approach 1:
The patent transitions from measuring a single resonance frequency to analyzing multiple resonance frequencies (fundamental and higher harmonics) simultaneously. By incorporating higher dimensional frequency information into the measurement process, the system achieves position-independent measurements that are insensitive to object orientation and shape variations, thereby resolving the contradiction between measurement precision and device complexity
Solution Approach 2:
The patent changes the measurement parameters by simultaneously measuring multiple resonance frequencies (fundamental frequency and higher harmonics) instead of relying on a single frequency. This parameter expansion enables the system to extract multiple independent measurements from a single object, improving measurement accuracy while maintaining device simplicity through mathematical analysis of the frequency spectrum
2Measurement precision
If format-dependent sample guiding is implemented, then the measurement precision is improved for specific formats, but the adaptability deteriorates when capsule format changes require back fitting
Solution Approach 1:
The patent creates a universal measurement system that can accurately measure objects of any format without requiring format-specific guiding arrangements. By using multi-frequency resonance analysis, the system achieves position-independent measurements that work for capsules, tablets, and other dielectric objects regardless of their shape or orientation, eliminating the need for format-dependent sample guiding and back-fitting adjustments
3Productivity
If traditional single-frequency resonance measurement is used, then the device simplicity is maintained, but the productivity is limited due to lower measurement resolution
Solution Approach 1:
The patent enables continuous high-speed measurement by performing multi-frequency resonance analysis simultaneously during object transit through the resonator. The system processes fundamental and harmonic frequencies in real-time without requiring additional measurement cycles or stopping the measurement flow, thereby maintaining high productivity while improving measurement resolution through enhanced frequency analysis
Solution Approach 2:
The patent enhances productivity by changing the measurement parameters from single-frequency to multi-frequency simultaneous analysis. By measuring multiple resonance frequencies at once and using mathematical analysis to extract mass and moisture information, the system achieves higher measurement resolution and accuracy without increasing measurement time or requiring complex additional hardware
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 significantly improves measurement accuracy and throughput, allowing for 100% examination of mass and moisture in individual sample bodies at high production rates, including up to 106 samples per hour, without mechanical limitations, and independent analysis of dielectric properties in various orientations.
Implementation Method 1
the at least one high frequency resonator generates at least two modes in the high frequency resonator, which are independent from each other, having different resonance frequencies
Implementation Method 2
The electromagnetic fields which generate the resonance are created via the at least one high frequency generator
Implementation Method 3
By the at least one high frequency detector, the electric and/or magnetic properties of resonances in the high frequency resonator can be measured
Implementation Method 4
a microwave resonance apparatus with at least two independent resonance modes, where the electric fields are oriented vertically and independently in different spatial directions
Implementation Method 5
Due to its dielectric properties, the object changes an electromagnetic resonance impressed to the resonator
Implementation Method 6
The mass and the moisture of the dielectric object is then determined from the change of the resonance curve and from the shift of the resonance frequency
Data Source
AI summary
An apparatus for the measurement of mass and/or moisture of dielectric objects, with an analysing unit, at least one high frequency generator, at least one high frequency detector and with a high frequency resonator, wherein the at least one high frequency generator can generate at least two modes which are independent from each other, having different resonance frequencies in the resonator, the at least one high frequency detector can measure the occurring frequencies for each mode in the resonator, and the analysing unit can determine a shift of the resonance frequency (A) and a change of the resonance curve for the measured frequencies in each mode, and can calculate the mass and/or moisture of the dielectric object from the determined values for the shift of the resonance frequency (A) and the change of the resonance curve.