Reverse Polarity Scanning Method on 64-Channel Capacitive Sensor to Improve the Performance of ECVT System

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This research proposes a scanning method on tomography namely electrical capacitance volume tomography (ECVT). This study discusses the new scanning method of reverse polarity scanning that is applied to 64-channel capacitive sensors. In tomography process, the data acquisition system measures the capacitance from capacitive sensors using scanning process by activating the electrode pairs. Generally, scanning process in ECVT uses conventional scanning by activating an electrode pair and measure the capacitance signal for the pair. This study proposes a new scanning process, by reversing the polarity of electrode in scanning method. The method is applied by changing the polarity of excitation electrode into detection electrode, and vice versa. Then, both of methods are compared to evaluate the performance of the acquisition system. Simulation and experiment are performed using 64-channel capacitive sensors with cylinder rods phantom filled with water. To evaluate the performance of the ECVT system, static objects were used to measure parameters such as Mean Absolute Error (MAE), Coefficient-Correlation (R), and image qualitative observation. From the simulation and experiment, the Coefficient-Correlation (R) value as 0.6 and Mean Absolute Error (MAE) value as 0.2, so that the proposed method can improve image quality of 3.2%.

Original languageEnglish
Title of host publicationProceedings - 2018 International Seminar on Application for Technology of Information and Communication
Subtitle of host publicationCreative Technology for Human Life, iSemantic 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages159-165
Number of pages7
ISBN (Electronic)9781538674864
DOIs
Publication statusPublished - 27 Nov 2018
Event3rd International Seminar on Application for Technology of Information and Communication, iSemantic 2018 - Semarang, Indonesia
Duration: 21 Sep 201822 Sep 2018

Publication series

NameProceedings - 2018 International Seminar on Application for Technology of Information and Communication: Creative Technology for Human Life, iSemantic 2018

Conference

Conference3rd International Seminar on Application for Technology of Information and Communication, iSemantic 2018
CountryIndonesia
CitySemarang
Period21/09/1822/09/18

Keywords

  • ECVT
  • capacitive sensor
  • ill posed
  • reverse polarity scanning
  • stray capacitance

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