Suspension Solid Measurement with Gas Interference Compensation
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Solution Overview
Problem
The measurement of solid matter in suspensions is inaccurately affected by the presence of air or gas, which interferes with electromagnetic radiation-based methods used in industries like paper and pulp, leading to inconsistent results in determining the consistency and quality of paper products.
Innovation Solution
A device and method that combine radio-frequency or optical electromagnetic radiation measurements with impedance tomography to determine the amount of solid matter in suspensions by accounting for the proportional dielectric constants of both the solid particles and the gas, using frequency scanning and signal processing techniques to calculate transit time, phase, and signal strength, while also measuring the volume of free gas through electrical conductivity and impedance distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If electromagnetic radiation measurement is used to determine solid matter in suspension, then measurement speed is improved, but measurement precision deteriorates due to gas interference
Solution Approach 1:
The patent introduces impedance tomography as an intermediary measurement technique that specifically detects gas distribution in the suspension. By using this intermediary method to map gas locations and volumes, the system can then compensate for gas interference in the electromagnetic radiation measurements, thereby maintaining both speed and precision.
Solution Approach 2:
The patent implements a feedback mechanism where impedance tomography continuously monitors gas distribution and provides correction data to the electromagnetic radiation measurement system. This feedback loop allows real-time compensation for gas interference, maintaining measurement precision without sacrificing the rapid measurement capability of electromagnetic radiation.
2Device complexity
If single measurement method is used, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The patent merges two measurement techniques - electromagnetic radiation measurement for solid matter detection and impedance tomography for gas detection - into a single integrated system. The measurement device includes both electromagnetic radiation sources/detectors and impedance electrodes, allowing simultaneous or coordinated operation to achieve precise solid matter measurement despite gas presence.
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 allows for accurate measurement of solid matter in suspensions, improving the quality of paper products by correcting for the presence of gas, thereby enhancing the consistency and reliability of the measurement results.
Implementation Method 1
The consistency may be determined by means of the attenuation of the electromagnetic radiation, the radiation being in interaction with the suspension
Implementation Method 2
The consistency may also be measured, for instance, by means of the propagation time of radio-frequency radiation
Implementation Method 3
the proportional volume of free gas contained in the suspension is determined on the basis of measurement of electrical conductivity and/or impedance distribution in the suspension
Data Source
Figure 1A~2A
Figure 2B~3A
Figure 3B~3C
AI summary
A measuring part (150, 152, 250, 252, 350) measures the amount of matter dispersed in a suspension (106) on the basis of a measurement, in which electromagnetic radiation interacts with the suspension (106), and the proportional volume of a free gas (318) contained in the suspension (106) on the basis of a measurement of electrical conductivity and/or impedance distribution for determining the amount of dispersed solid matter in the suspension (106).