Problems of the Data Acquisition Rate for Impedance Tomography

Zdzislaw Szczepanik, Zbigniew Rucki

Division of Measurement and Measuring Systems, Faculty of Electronics WROCLAW UNIVERSITY of TECHNOLOGY, ul. B. Prusa 53/55, 50-317 Wroclaw, POLAND

Phone +48 (71) 206-245 E-mail: szczepanik@zwmsp.pwr.wroc.pl

ABSTRACT

The paper discuses some problems of limitations of data acquisition rate of impedance tomography systems. The transients resulting from switching of current source and measuring converter are taken into consideration. A method of resistance measurement during one period of a harmonic measuring signal is proposed. The selection rules of measuring signal frequency are also given.

Keywords impedance tomography, data acquisition rate, transients, fast data acquisition