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Automatisk kalibrering av vätskenivå
KTH, School of Information and Communication Technology (ICT).
2015 (Swedish)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Automatic liquid level calibration (English)
Abstract [sv]

Företaget Biosensor Applications AB utvecklar biotekniska analysintrument för detektion av otillåtna substanser såsom narkotika och sprängmedel. Instrumenten används inom tullverksamhet, kriminalvård och rehabilitering. Instrumentens höga känslighet kräver noggrann kalibrering av hela systemet, vilket görs på automatisk väg för defiesta systemmoddulerna. För en viktig del i detektionsprocessen, inställningen av en vätskenivå, saknas det dock en metod för automatisk kalibrering. Kalibreringen måste därför ske manuellt av en tekniker, vilket är tidskrävande, kostsamt och framförallt svårt då även en väldefinierad manuell metod saknas. Denna rapport beskriver examensarbetets utvärdering av de manuella metoder som idag används. Därefter utvecklas en metod för en helautomatisk kalibrering av vätskenivån. Vidare beskrivs hur den automatiska metoden implementeras i instrumentets systemjukvara. I resultaten redovisas hur det uppgraderade systemet används i produktion av företaget, med stora vinster för såväl tidsåtgång, kostnad samt repeterbarhet.

 

Abstract [en]

Biosensor Applications AB develops biotechnical analysis equipment for detection of illegalsubstances such as narcotics and explosives. The equipment is used by customs,correctional facilities and rehabilitation centers.The high sensitivity of the equipment requires careful calibration of the whole system,which is performed automatically for most of the system modules. For one importantpart of the detection process however, the setting of a liquid level, there is no methodfor an automatic calibration. The calibration must therefor be performed manually by atechnician, which is time consuming, costly and above all di cult due to the additionallack of a well de ned manual method.This report describes the thesis evaluation of the manual methods that are used today.After that, a method for a fully automatic calibration of the liquid level is developed.Furthermore, the report describes how the automatic method is implemented into theequipments system software.The result section presents how the upgraded system is used by the company duringproduction, showing large bene ts in terms of time requirement, cost and repeatability

Place, publisher, year, edition, pages
2015.
Series
TRITA-ICT-EX, 2015:32
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-174862OAI: oai:DiVA.org:kth-174862DiVA: diva2:859564
Examiners
Available from: 2015-10-07 Created: 2015-10-07 Last updated: 2017-06-13Bibliographically approved

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Type fulltextMimetype application/pdf

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Electrical Engineering, Electronic Engineering, Information Engineering

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CiteExportLink to record
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Citation style
  • apa
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