Utilizing Internal Electrodes in Volume Fraction Estimation by Electrical Process Tomography

Lasse M. Heikkinen, Marko Vauhkonen, Tuomo Savolainen and Jari. P Kaipio

Department of applied physics, University of Kuopio, P.O.Box 1627, 70211 Kuopio, Finland,Marko.Vauhkonen@uku.fi

ABSTRACT

In this paper we consider estimation of air volume fraction distribution by electrical impedance tomography. In the estimation we utilize internal electrodes. We concentrate on a situation in which we have different contrast ratios in conductivity distribution. Based on a mapping between the conductivity and the volume fraction the latter can be estimated. The results show that the exploitation of internal electrodes improves the estimates of the volume fraction.

Keywords Process tomography, volume fraction estimation, electrical impedance tomoraghy, internal electrodes.