Real-Time Electrical Impedance Sensing System Design for Conductivity Distribution Reconstruction
Journal
IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM
ISSN
21596247
ISBN (of the container)
9798331533427
ISBN
9798331533427
Date Issued
2025-07-14
Author(s)
Abstract
This paper presents a method for reconstructing the electrical conductivity image using electrodes, which is implemented on an embedded real-time controller for real-time display. The reconstruction architecture comprises electrical field modeling, establishing a sensitivity matrix that relates the electrical field gradient to conductivity variation, and utilizing Tikhonov regularization to solve the ill-posed inverse problem. The effectiveness of the proposed method is demonstrated using numerically simulated data. The computational time required to reconstruct the electrical conductivity image is less than three ms. As illustrated by developing a prototype of the electrical impedance tomography (EIT) sensing system with the electrical image reconstruction method implemented on an embedded real-time controller, the EIT sensing system produces an electrical conductivity image at a rate of 32 ms per frame.
Event(s)
2025 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM 2025, Hangzhou, 14 July 2025 - 18 July 2025
Publisher
Institute of Electrical and Electronics Engineers Inc.
Type
conference paper