Integrated electrodes for electrical capacitance tomography

Author

Williams, P.M. ; Haycock, R.J. ; York, T.A.

Author_Institution

Dept. of Electr. Eng. & Electron., Univ. of Manchester Inst. of Sci. & Technol., UK

Volume

1

fYear

1998

Firstpage

472

Abstract

This paper describes the design of circuitry which can be mounted directly on the electrodes in an electrical capacitance tomography system such that the effects of stray capacitance are reduced. This allows increased operating frequencies to be employed which leads to improvements in sensitivity. These, so called, integrated electrodes are based on custom CMOS capacitance transducers which utilise the charge discharge circuit. Digital, bit-serial, communications allow fast, reliable and efficient transfer of data

Keywords

CMOS integrated circuits; capacitance measurement; electric impedance imaging; tomography; transducers; bit-serial communications; charge discharge circuit; custom CMOS capacitance transducers; electrical capacitance tomography; integrated electrodes; operating frequencies; stray capacitance effects; CMOS digital integrated circuits; Clocks; Electrical capacitance tomography; Electrodes; Electromagnetic measurements; Frequency; Image reconstruction; Permittivity measurement; Switches; Ultrasonic variables measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1998. IMTC/98. Conference Proceedings. IEEE

ISSN

1091-5281

Print_ISBN

0-7803-4797-8

Type

conf

DOI

10.1109/IMTC.1998.679831

Filename

679831