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Mätning av skärgradshöjd på stål
KTH, School of Technology and Health (STH), Medical Engineering, Computer and Electronic Engineering.
2016 (Swedish)Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesisAlternative title
Measurement of burr height onsteel (English)
Abstract [sv]

Idag beskärs en stålrulle inom stålindustrin i ett skärverk, stålrullarna delas tillmindre delband med dålig kontroll av skärgradshöjdens kvalitet. Stickprover tas manuelltvilket endast blir ett fåtal stickprover på en stålrulle som har 150 delband ochär 30 kilometer i längd. En hål omsändning för en stålrulle kostar upp mot en miljonkronor och har en negativ klimatpåverkan. En mjukvaruprototyp för detektering avskärgradshöjd med en referenslinje togs fram. Prototypen innehöll en ljussensor, tvåmotorer, en PC och en prototypkonstruktion. Varje uppgift i programvaran tilldeladesen egen tråd. Operativsystem, trådar och algoritmer prestanda testades för mätningav exekveringstider och periodtider. Resultatet visade att en skärgradsdetektorvar möjlig att realisera. Algoritmen för skärgradshöjd med referenslinje detekteradeskärgradshöjden där amplituden var tillräckligt stor.

Abstract [en]

Today, a steel roll is cut within the steel industry in a cutting factory, the steel rollsare divided to smaller part bands with poor control of the burr height quality. Samplesis taken manually, the amount of samples is too low to know the quality of thesteel roll, the steel rolls can be divided up to 150 times and the length will be 30 kilometers. A whole resend for one steel roll costs up against a million SEK and has anegative climatic impact. One software prototype for detection of burr heights witha reference line was programmed. The prototype contained one light sensor, two motors,a PC and one prototype construction. Each task in the software was allocatedan own thread. Operating systems, threads and algorithms was performance testedfor measurement of execution times and period times. The result showed that a burrheight detector where possible to implement. The algorithm could detect burrheights that were too large related to its reference line.

Place, publisher, year, edition, pages
2016. , 54 p.
Series
TRITA-STH, 2016:46
Keyword [en]
Burr height detection, image processing, OpenCV, light sensor, servo motor, operating systems, network communication
Keyword [sv]
Skärgradsdetektering, bildbehandling, OpenCV, ljussensor, servomotor, operativsystem, nätverkskommunikation
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:kth:diva-188476OAI: oai:DiVA.org:kth-188476DiVA: diva2:935124
External cooperation
Vollmer
Subject / course
Signal Processing
Educational program
Bachelor of Science in Engineering - Electrical Engineering
Supervisors
Examiners
Available from: 2016-09-29 Created: 2016-06-10 Last updated: 2016-09-29Bibliographically approved

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CiteExportLink to record
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