Methods of Forming the Control Voltage in the Current Generation Problem for Electrical Impedance Tomography
Shcherbakov I. D.1, Katsupeev A. A.2, Shcherbakova M. V.3, Tjaglicova P. V4
1Shcherbakov Ivan Dmitrievich*, Department of Information and Measuring Systems And Technologies, Platov South-Russian State Polytechnic University (NPI), Russian Federation.
2Katsupeev A. A., Associate Professor, Department of Information and Measuring Systems And Technologies, Platov South-Russian State Polytechnic University (NPI), Russian Federation.
3Shcherbakova M. V., Department of Biotechnical and Medical Devices and Systems, Platov South-Russian State Polytechnic University (NPI), Russian Federation.
4Tjaglicova P. V., Department of Information and Measuring Systems And Technologies, Platov South-Russian State Polytechnic University (NPI), Russian Federation.
Manuscript received on November 22, 2019. | Revised Manuscript received on December 15, 2019. | Manuscript published on December 30, 2019. | PP: 4293-4296 | Volume-9 Issue-2, December, 2019. | Retrieval Number: B4235129219/2019©BEIESP | DOI: 10.35940/ijeat.B4235.129219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The paper considers questions of control signal for injection current generation in electric impedance tomography devices. The most common injection current generation scheme is voltage controlled current sources. In these circuits, the shape, frequency and amplitude of the current are set by the control voltage. The most common control voltage generation schemes are considered; their advantages and disadvantages are indicated. A circuit using direct digital synthesis and an amplitude-tuning digital-to-analog converter was selected, its block diagram was developed, and an operation algorithm was described. The developed scheme will improve the efficiency of the research by the method of electrical impedance tomography due to the complete automation of the process of controlling its parameters.
Keywords: Electrical impedance tomography, current source, voltage generator, hardware structure.