Impedance Matched Front-End Circuitry for Electrical Capacitance Tomography Systems

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Abstract

Electrical capacitance tomography (ECT) is a well-established technique for process monitoring. ECT is used to observe goods and process optimization in industrial applications. High temperatures or high pressures are common conditions in industrial environments. To dislocate the vulnerable ECT measurement electronics from the sensor, where such unfavourable conditions may prevail, long instrumentation lines are required. For increasing excitation frequencies, impedance transformation properties of those lines emerge. To overcome this undesired effect, we propose a front-end structure which meets the characteristic instrumentation line impedance. In this paper we present the analysis of a 50 Ω matched front-end design for electrical capacitance tomography. The transmitter stage as well as the receiver is analysed by means of simulations. The results are compared with a commonly used low-impedance structure. Further insights of the matched receiver structure are obtained by measurements, carried out with a realized prototype.
Original languageEnglish
Title of host publicationProceedings of the 9th World Congress on Industrial Process Tomography
PublisherInternational Society for Industrial Process Tomography
Pages537-545
Number of pages9
Publication statusPublished - Sep 2018
Event9th World Congress on Industrial Process Tomography - University of Bath, Bath, United Kingdom
Duration: 2 Sep 20186 Sep 2018
Conference number: 9
https://www.isipt.org/wcipt9

Conference

Conference9th World Congress on Industrial Process Tomography
Abbreviated titleWCIPT 2018
Country/TerritoryUnited Kingdom
CityBath
Period2/09/186/09/18
Internet address

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