Potential distribution and sensitivity map in ECT systems based on finite element method

Electrical capacitance tomography (ECT) is a non-invasive measurement technology, which is used to acquire spatial distribution information. It have application in many fields from food industry to oil and gas and especially to biomedical engineering and two-phase measurements. Defining potential distribution and sensitivity map is oneof the primary problems associated to ECT systems. A computational procedure based on FEM is given in this text that could calculate the sensitivity in a short time. All derived equations are applied in a case study circular phantom and potential distribution and sensitivity maps are obtained respectively. The results show the robustness of thederived equations and sketched maps are shown good symmetry in circular medium.

Keywords:

Electrical capacitance tomography , Finite element method , Sensitivity , Potential distribution , stiffness matrix.