A New Discrete Analog Circuit Solution for Capacitive Rotary Encoders

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dc.contributor.authorKara, Muhammet Rojhat
dc.contributor.authorYavsan, Emrehan
dc.contributor.authorKarali, Mehmet
dc.contributor.authorErismis, Mehmet Akif
dc.date.accessioned2024-02-23T14:23:53Z
dc.date.available2024-02-23T14:23:53Z
dc.date.issued2022
dc.departmentNEÜen_US
dc.description.abstractIn the time of global chip crisis, it is clear that alternative electronic solutions are necessary; particularly for capacitive rotary encoders, or similar capacitive sensors where demodulation techniques are extensively used. In this work, a discrete analog switch based circuit solution is proposed for the capacitive rotary encoders for the first time in the literature to the best of our knowledge. A 3-layer uniquely designed capacitive encoder prototype is used as a capacitive sensor. The analog switch with OPAMP based demodulation configuration designed for this work is both cheaper and it works at higher frequencies than the analog multiplier configuration. Also, unlike ASIC, it does not require high-tech for production. With the established test setup; noise, smallest perceptible capacitance, nonlinearity and temperature analyses of the circuit were made and competing resultswere achieved. The noise levels in terms of degree and voltage are measured as 0.0063 degrees and 36.62 mu V root Hz; respectively. Minimum measurable capacitance achieved with the discrete analog circuit is 2.54 aF root Hz. Nonlinearity was found to be 0.29% which is highly correlated with the mechanical misalignments of the capacitive encoder. Although this particular study is carried out on capacitive encoders, the proposed circuit solution can be used for similar types of sensors.en_US
dc.description.sponsorshipNecmettin Erbakan University Scientific Research Projects Unit [191419007]; Scientific and Technological Research Council of Turkey (TUBITAK) [1649B021908049]en_US
dc.description.sponsorshipThis work was supported in part by the Necmettin Erbakan University Scientific Research Projects Unit under Project 191419007 and in part by The Scientific and Technological Research Council of Turkey (TUBITAK) under Grant 1649B021908049.en_US
dc.identifier.doi10.1109/JSEN.2022.3185666
dc.identifier.endpage15070en_US
dc.identifier.issn1530-437X
dc.identifier.issn1558-1748
dc.identifier.issue15en_US
dc.identifier.scopus2-s2.0-85133808437en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage15062en_US
dc.identifier.urihttps://doi.org/10.1109/JSEN.2022.3185666
dc.identifier.urihttps://hdl.handle.net/20.500.12452/13735
dc.identifier.volume22en_US
dc.identifier.wosWOS:000835829900046en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherIEEE-Inst Electrical Electronics Engineers Incen_US
dc.relation.ispartofIeee Sensors Journalen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCapacitive Sensoren_US
dc.subjectDiscrete Analog Switch Demodulationen_US
dc.subjectAmplitude Modulationen_US
dc.titleA New Discrete Analog Circuit Solution for Capacitive Rotary Encodersen_US
dc.typeArticleen_US

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