University of Oulu

Hormipellin asennon ilmaisin Raspberry Pi 3:lle

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Author: Liakka, Mikko1
Organizations: 1University of Oulu, Faculty of Information Technology and Electrical Engineering, Electrical Engineering
Format: ebook
Version: published version
Access: open
Online Access: PDF Full Text (PDF, )
Persistent link: http://urn.fi/URN:NBN:fi:oulu-201803261387
Language: Finnish
Published: Oulu : M. Liakka, 2018
Publish Date: 2018-03-28
Thesis type: Bachelor's thesis
Description:
Työssä liitettiin IR-etäisyysanturi Raspberry Pi 3:een. Anturin avulla mitattiin, oliko savuhormin pelti auki vai kiinni. Raspberry Pi 3 lähetti tilatiedon GoogleDocs-tiedostoon, jolloin pellin asennon pystyi katsomaan älypuhelimesta. Väliin suunniteltiin komparaattoripiiri, koska anturin lähtö oli analoginen ja Raspberry Pi 3:ssa oli vain digitaalisia tulopinnejä. Lisäksi piirilevylle lisättiin kaksi LED:ä, jotka ilmaisivat pellin ja Raspberry Pi 3:n tilaa. Laite oli toimiva, mutta tarkkuus jäi hieman puutteelliseksi, mikä johtui anturin ja komparaattorin huonosta sovituksesta. Ilmaisin oli tarkempi valkoista paperia vasten kuin epätasaista oranssia taustaa vasten.
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In this thesis, an IR distance sensor was attached to Raspberry Pi 3. The sensor was used to measure, if a funnel damper was opened or closed. Raspberry Pi 3 was used to send the data to a GoogleDocs file where it was read with a smart phone. A comparator circuit was designed between the sensor and the Raspberry Pi 3 because the output of the sensor was analog and the input of the Raspberry Pi 3 was digital. In addition, two LEDs were attached to the comparator circuit to indicate the state of the flue damper and Raspberry Pi 3. The device was working but the accuracy was a bit lacking due to poor matching of the sensor and the comparator circuit. Detector was more accurate with white paper background than with rough orange background.
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Copyright information: © Mikko Liakka, 2018. This publication is copyrighted. You may download, display and print it for your own personal use. Commercial use is prohibited.