Adaptive Capacitance Sensor Segmentation for ECVT Resolution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional Electrical Capacitance Volume Tomography (ECVT) systems face limitations in resolution due to a limited number of capacitance plates, uneven electric field intensity, ill-conditioned systems, inability to focus on specific regions, and restricted sensor size, leading to noise sensitivity and low image quality.
Innovation Solution
An adaptive capacitance sensor array with individually addressable capacitance segments allows for controlled electric field distribution, increased independent measurements, and flexible voltage applications, enabling focused imaging and higher resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional ECVT systems use a limited number of capacitance plates, then the system complexity is reduced, but the image resolution deteriorates
Solution Approach 1:
Each capacitance plate is divided into multiple independently controllable segments. This segmentation allows the system to create multiple virtual electrodes from a limited physical plate count, thereby increasing the number of independent capacitance measurements and improving image resolution without proportionally increasing physical device complexity
Solution Approach 2:
The system dynamically adjusts the voltage distribution across different segments of capacitance plates during operation. By changing which segments are active and their voltage levels, the system can adaptively focus the electric field on different regions of interest, effectively increasing measurement capability without adding permanent hardware
2Measurement precision
If traditional ECVT systems use uniform voltage distribution on capacitance plates, then the system operation is simplified, but the electric field intensity becomes uneven, deteriorating measurement precision
Solution Approach 1:
Different segments of capacitance plates are assigned different voltage levels to create locally optimized electric field distributions. This allows the system to concentrate electric field intensity in specific regions where measurements are most needed, improving measurement precision while maintaining manageable operational complexity through segmented control
3Adaptability or versatility
If traditional ECVT systems use fixed sensor configurations, then the device complexity is reduced, but the adaptability to different imaging applications deteriorates
Solution Approach 1:
The sensor system dynamically reconfigures which capacitance segments are active and their voltage distributions based on the specific imaging application and region of interest. This dynamic adaptability allows a single physical sensor array to perform multiple imaging tasks with different resolutions and focal points without requiring physical reconfiguration
Solution Approach 2:
The segmented capacitance plate design creates a universal sensor platform that can perform multiple imaging functions. The same physical plates can be configured for different imaging scenarios (different regions of interest, different resolutions, different field distributions) making the system universally applicable to various ECVT applications
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
The adaptive ECVT system enhances image resolution, reduces noise sensitivity, and increases the flexibility of imaging applications by allowing precise control over the electric field and capacitance measurements, improving the overall quality of reconstructed images.
Implementation Method 1
An ECVT sensor is generally comprised of n electrodes or plates placed around a region of interest, in one embodiment providing n(n−1)/2 independent mutual capacitance measurements which are used for image reconstruction
Implementation Method 2
The change in overall energy of the system due to the introduction of a dielectric material in the imaging domain is used to calculate the change in capacitance related to the dielectric material
Data Source
AI summary
An electrical capacitance tomography sensor including a sensor having a plurality of electrodes, where each electrode is formed from a plurality of capacitance segments. Each of the capacitance segments of each electrode can be individually addressed to focus the electric field intensity or sensitivity to desired regions of the electrodes and the sensor.