Sensor Probe With Shielded Electrodes for Fluid Analysis
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Solution Overview
Problem
Existing sensor probes face challenges in accurately analyzing complex fluids like oil-based and water-based drilling muds due to limitations in measuring both electromagnetic properties and physical properties such as density and viscosity, especially in fluids with low DC electrical conductivity and electrode polarization effects.
Innovation Solution
A sensor probe design featuring a pair of electrodes for electromagnetic property measurements and shield members for electromagnetic shielding and mechanical resonance to measure physical properties, allowing simultaneous measurement of EM properties and physical parameters like density and viscosity without degrading the quality of measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate sensor probes are used for electromagnetic property measurement and physical property measurement, then measurement functions are complete, but device complexity increases and simultaneous measurement quality degrades
Solution Approach 1:
The patent combines electromagnetic sensing electrodes and mechanical resonance shield members into a single integrated probe structure. The shield members serve dual purposes: providing electromagnetic shielding for the electrodes and acting as mechanical resonators for physical property measurement. This merging eliminates the need for separate probes while maintaining measurement quality.
Solution Approach 2:
The shield members are designed to perform multiple functions simultaneously: (1) electromagnetic shielding of the electrodes during EM property measurement, and (2) mechanical vibration for density and viscosity measurement. This multi-functionality resolves the contradiction by enabling complete measurement capabilities within a single probe structure.
2Measurement precision
If shield members are added for electromagnetic shielding, then EM measurement accuracy improves, but device complexity increases
Solution Approach 1:
The shield members provide electromagnetic shielding while simultaneously serving as mechanical resonators for physical property measurement. This dual functionality means that adding shielding elements does not increase overall device complexity, as the same elements perform multiple roles.
3Measurement precision
If multiple separate probes are used for simultaneous measurements, then measurement accuracy is maintained, but measurement time increases
Solution Approach 1:
The integrated probe structure enables simultaneous execution of electromagnetic property measurement and physical property measurement through coordinated vibration and electrical excitation. This eliminates sequential measurement requirements, reducing total measurement time while maintaining accuracy through the unified design.
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 accurate and simultaneous measurement of electromagnetic and physical properties of fluids, improving analysis accuracy and reducing material deposits on the probe, particularly suitable for oil-based drilling muds and applicable to a wide range of fluids with enhanced sensitivity and signal-to-noise ratio.
Implementation Method 1
electrodes being capable of having electrical oscillations generated therein for measurement of EM properties of a fluid
Implementation Method 2
shield members being capable of having vibrations generated therein for measurement of at least one physical property of the fluid
Data Source
AI summary
A sensor probe for analysis of a fluid includes a base, and a pair of electrodes and a pair of shield members protruding from the base for insertion into the fluid. The electrodes have electrical oscillations generated therein for measurement of electromagnetic properties of the fluid, such as permittivity. The shield members are disposed outside the electrodes and have a dual purpose of electromagnetically shielding the electrodes and having vibrations generated therein for measurement of physical parameters of the fluid, such as density or viscosity. Thus, the single sensor probe can provide measurements of both electromagnetic properties and physical properties of the fluid.