Assessment of the spatial distribution of moisture content in granular material using Electrical Impedance Tomography
Authors:
- Jan Porzuczek
Abstract
This paper presents a method for on-line determination of the spatial distribution of the moisture content in granular material. It might be essential for monitoring and optimal control of e.g. drying processes. The proposed method utilizes Electrical Impedance Tomography (EIT). As the exemplary material for experimental research the black chokeberry (Aronia melanocarpa) was used. The relationship between electrical impedance of chokeberry and its moisture content was determined for wide range of frequency (20Hz-200kHz). The EIT research consisted of both simulation as well as experimental investigation. Experimental studies of the spatial distribution of the moisture content was performed in the cylindrical vessel equipped with 8-electrode circumferentially arranged. Voltage signal from the electrodes was acquired simultaneously using data acquisition module. Due to high impedance of the chokeberries, exceeding 10^9 ohm for dried matter, extraordinary instrumentation was necessary to be applied. On the other hand raw chokeberry is characterized by several orders of magnitude lower impedance (10^3-10^4 ohm) especially for high frequency. Wide range of observed impedance was able to be measured owing to use of the voltage stimulation instead of the current stimulation (which is most common for EIT). The image reconstruction problem was solved using iterative Gauss-Newton algorithm and the EIDORS software package. The obtained results showed satisfactory ability to localize insufficiently dried part of the material. Prospect for the improvement of the imaging quality was also discussed.
- Record ID
- CUT27d6a8707ce04e779417f5152df9b765
- Publication categories
- ; ;
- Author
- Pages
- 111-125
- Other elements of collation
- il. (w tym kolor.); Bibliografia (na s.) - 124-125; Bibliografia (liczba pozycji) - 34; Oznaczenie streszczenia - Abstr.
- Substantive notes
- Inf. w źródle: This is a reprint of articles from the Special Issue published online in the open access journal Sensors (ISSN 1424-8220) in 2019 (available at: https://www.mdpi.com/journal/sensors/specialissues/WCIPT9)
- Book
- Soleimani Manuchehr, Manuchehr Soleimani Wondrak Thomas, Thomas Wondrak Tan Chao Chao Tan (eds.): Selected papers from the 9th World Congress on Industrial Process Tomography, 2020, Basel, MDPI, ISBN 978-3-03928-249-4 PDF
- Keywords in English
- drying process, Electrical Impedance Tomography, Impedance Spectroscopy, chokeberry, EIDORS
- DOI
- DOI:10.3390/books978-3-03928-249-4 Opening in a new tab
- URL
- http://www.mdpi.com/books/pdfview/book/2035 Opening in a new tab
- Related project
- Zaawansowane metody modelowania i pomiarów w technice cieplnej - cz. 2. . Project leader at PK: , ,
Działalność statutowa - Language
- eng (en) English
- License
- Score (nominal)
- 0
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT27d6a8707ce04e779417f5152df9b765/
- URN
urn:pkr-prod:CUT27d6a8707ce04e779417f5152df9b765
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.