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Design of a gap electrode capacitance array sensor based on capacitive edge effects
Zhen Song1, Xuezhen Cheng1, Zhenghao Cao2
1College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao 266590, China.
The Review of Scientific Instruments
|June 1, 2026
Summary
A new gap electrode sensor design improves Electrical Capacitive Tomography (ECT) imaging accuracy by reducing edge effects. This enhances multiphase flow measurement quality and sensor performance.
Area of Science:
- Electrical Engineering
- Measurement Science
- Fluid Dynamics
Background:
- Electrical Capacitive Tomography (ECT) is vital for multiphase flow analysis.
- Image reconstruction accuracy is critical for reliable ECT measurements.
- Edge effects in capacitive sensors can degrade image quality.
Purpose of the Study:
- To introduce a novel gap electrode capacitive array sensor design for ECT.
- To mitigate edge effects and improve electrode coverage in capacitive measurements.
- To enhance the accuracy and quality of reconstructed images in ECT.
Main Methods:
- Proposed a novel gap electrode capacitive array sensor design.
- Embedded gap electrodes into a traditional ECT sensor structure.
- Evaluated sensor performance through experimental analysis.
Main Results:
- The gap electrode design effectively reduced edge effects.
- Overall sensor sensitivity and uniformity of the sensitivity field were enhanced.
- Image quality was markedly improved, with reduced reconstruction artifacts.
- Demonstrated good versatility and anti-interference capability.
Conclusions:
- The proposed gap electrode capacitive array sensor significantly improves ECT image quality.
- This novel design offers enhanced performance for multiphase flow parameter measurement.
- The sensor exhibits robust versatility and anti-interference capabilities.
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