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Automatic Recycling Sorting Unit: A platform designed to sort glass, plastic and metal
KTH, School of Industrial Engineering and Management (ITM).
KTH, School of Industrial Engineering and Management (ITM).
2023 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Automatisk återvinningssorterare: En plattform desginad för att sortera glas, plast och metall (Swedish)
Abstract [en]

This report describes the design and construction of a tilting platform for sorting household waste, limited to plastic, glass, and metal. The platform utilizes a capacitive sensor to identify if an object is placed on the platform, an inductive sensor to detect metal, and a load cell to differentiate between plastic and glass based on their weight difference. The load cell was found to be inaccurate due to sensitivity to physical changes in the environment and sensor placement, leading to inaccurate weight measurements. Relocating the sensors away from the load cell is recommended to improve accuracy.

The platform tilts using to two servomotors, which makes the platform tilt in two degrees of freedom. This solution worked as thought out, except for the universal joint having poor quality, resulting in a wobbly motion.

Abstract [sv]

Denna rapport beskriver designen och konstruktionen av en vippande plattform för sortering av hushållsavfall begränsat till plast, glas och metall. Plattformen använder en kapacitiv sensor för att identifiera om ett föremål placeras på den, en induktiv sensor för att detektera metall och en lastcell för att skilja mellan plast och glas baserat på deras viktskillnad. Lastcellen visade sig vara opålitlig på grund av dess känslighet för fysiska förändringar i miljön och placeringen av sensorerna, vilket ledde till felaktiga viktmätningar. Det rekommenderas att flytta sensorerna bort från lastcellen för att förbättra noggrannheten.

Den lutande funktionen drivs av två servomotorer som var funktionell men hade en ostadig rörelse på grund av dåliga universal joints.

Place, publisher, year, edition, pages
2023. , p. 61
Series
TRITA-ITM-EX ; 2023:66
Keywords [en]
Mechatronics, Recycling, Inductive sensor, Capacitive sensor, Loadcell
Keywords [sv]
Mekatronik, Återvinning, Induktivsensor, Kapacitivsensor, Viktcell
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-330019OAI: oai:DiVA.org:kth-330019DiVA, id: diva2:1774878
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Examiners
Available from: 2023-06-26 Created: 2023-06-26 Last updated: 2023-06-26Bibliographically approved

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Citation style
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Output format
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