The capacitive sensor for liquid level measurement, fabricated with the inkjet printing technology

Daniel Paczesny , Grzegorz Tarapata , Michał Marzęcki , Michał Woyke , Ryszard Jachowicz


The paper reports a capacitive multisection sensor for measuring level of various liquids. Presented sensor was fully fabricated with the inkjet printing technology on thin Kapton substrate. The measurement of liquids level based on capacitive sensing is already well known technique, however the novelty of presented sensor is the technology of fabrication that was used, approach to the pattern design which combines analog and digital capacitive section and obtained self-calibration feature of whole system independently on measured liquid type. Fabricated sensor structure has dimension of 210 mm x 12 mm and the thickness approximately of 27 μm. It contains 8 digital-like sections along the sensor and one analog section which allows to fine measurements. The sensor was tested in a vessel during filling and emptying with various liquids. Performed tests exhibited the linearity of the sensor characteristic and the lack of hysteresis. Obtained sensitivity of the sensor prototype was approximately 6.8 pF/mm, but it could be easily modify on the design stage due to the fast prototyping feature of inkjet printing technology. Thanks to the flexibility of the substrate, the sensor structure can be applied to any shape of vessel. Furthermore, the sensor construction is fairly simple and costs in mass production could be extremely low. This type of sensor was design especially for autonomous cleaning and washing robots for large areas operation.
Author Daniel Paczesny (FEIT / PE)
Daniel Paczesny,,
- The Institute of Electronic Systems
, Grzegorz Tarapata (FEIT / PE)
Grzegorz Tarapata,,
- The Institute of Electronic Systems
, Michał Marzęcki (FEIT / PE)
Michał Marzęcki,,
- The Institute of Electronic Systems
, Michał Woyke (FEIT / PE)
Michał Woyke,,
- The Institute of Electronic Systems
, Ryszard Jachowicz (FEIT / PE)
Ryszard Jachowicz,,
- The Institute of Electronic Systems
Publication size in sheets0.5
Book Jasiński Piotr (eds.): Proc. SPIE. 10161, 14th International Conference on Optical and Electronic Sensors , vol. 10161, 2016, P.O. Box 10, Bellingham, Washington 98227-0010 USA , SPIE , ISBN 9781510607804, [9781510607811 (electronic)], 235 p., DOI:10.1117/12.2265889
Keywords in Englishinkjet printing, sensor, liquid level, measurements
ProjectCreating a system for forecasting the development of crime, as an element of building a security strategy and public policy. Project leader: Wawrzyniak Zbigniew M., , Phone: +48 22 234 7738, application date 15-09-2015, start date 21-12-2015, end date 20-12-2018, ISE/2015/4/NCBiR/7-2015/Prokrym, Completed
WEiTI Projects financed by NCRD [Projekty finansowane przez NCBiR (NCBR)]
Languageen angielski
1016112.pdf 1.16 MB
Score (nominal)0
Publication indicators WoS Citations = 0; Scopus Citations = 1; GS Citations = 1.0
Citation count*1 (2020-09-22)
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