Screen printed and laminated electrodes for low-cost capacitive level measurement systems
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F18%3A00322596" target="_blank" >RIV/68407700:21230/18:00322596 - isvavai.cz</a>
Result on the web
<a href="http://iris.elf.stuba.sk/cgi-bin/jeeec?act=abs&no=2_118&ttl=10" target="_blank" >http://iris.elf.stuba.sk/cgi-bin/jeeec?act=abs&no=2_118&ttl=10</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2478/jee-2018-0022" target="_blank" >10.2478/jee-2018-0022</a>
Alternative languages
Result language
angličtina
Original language name
Screen printed and laminated electrodes for low-cost capacitive level measurement systems
Original language description
The fabrication procedure and characterization of low-cost electrodes for capacitive level sensors realized on a flexible substrate are presented in this paper. The aim was to prepare conductive electrodes by printing of silver and PEDOT:PSS pastes on coated PET foil. Individual interdigital capacitors and a system with embedded microcontroller readout were designed for a comparative study. Individual capacitors in the form of interdigital electrodes (IDT) were designed with different finger width/spacing dimensions from 300/300 mu m to 800/800 mu m, a finger length 10 mm and 15 mm and an overall length of 100 mm. A demonstrator device featuring an integrated microcontroller, sensing and reference capacitive sensors and a resistive temperature sensor was realized to proof a practical utilization. The microcontroller is used to calculate capacitances of IDT electrodes in terms of charging time proportional to the fluid level. The design with reference capacitor can be directly applied to different fluids with a wide range of conductivities and dielectric constants without recalibration. The printed structures were thermally laminated with covering PET foil. The sensitivity of the fabricated devices was characterized in liquids with different relative permittivity and conductivity (water and oil). The highest measured sensitivity was 0.7 pF/mm and 0.08 pF/mm for water and oil respectively, with resolution down to 0.1 mm.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Electrical Engineering
ISSN
1335-3632
e-ISSN
1339-309X
Volume of the periodical
69
Issue of the periodical within the volume
2
Country of publishing house
SK - SLOVAKIA
Number of pages
6
Pages from-to
177-182
UT code for WoS article
000440648400010
EID of the result in the Scopus database
2-s2.0-85048642004