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Automatisering av underhåll av produkter med inbyggda trådlösa sensorsystem: Fallstudie om tvättmaskin
KTH, School of Technology and Health (STH), Medical Engineering, Computer and Electronic Engineering.
2014 (Swedish)Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesisAlternative title
Automating maintenance for products with embedded wireless sensor systems : A case study on washing machines (English)
Abstract [sv]

I detta examensarbete undersöks möjligheten att automatisera underhåll med ett trådlöst inbyggt sensorsystem i en fallstudie om tvättmaskiner. Idén är att produkten ständigt kontrolleras via ett trådlös inbyggd sensor-system, där den kopplas upp och övervakas via ett moln. Det presenteras två molntjänster varav ett av dem används. En trådlös sensordesign an-vänds för att visa hur arbetet läggs upp, följt av hierarkiska modeller som beskriver designen i hårdvaru-och mjukvarunivå. Fem olika input-/outpu-tanalyser presenteras, där viktiga parametrar undersöks utifrån flera olika perspektiv och sensorer som kan mäta dessa parametrar.Som det framgår i resultatet, används den mest effektiva input-/outpu-tanalysen praktiskt på tvättmaskinen samt att prototypen anpassas efter den valda input-/outputanalysen. En molntjänst används där, de valda pa-rametrarna mäts med sensorer och presenteras på grafer. Det presenteras även simuleringar för att visa att de olika metoderna, kan tillämpas på tvättmaskinen för att gynna miljön och ekonomin.Utvärderingen av resultatet visade sig att en automatisering av underhåll är sannolikt baserat på mätningar av de valda parametrarna, utifrån de re-dovisade input-/outputanalyserna för tvättmaskinen.

Abstract [en]

This project involves controlling a washing machine and examining it as efficient as possible, with a wireless in-built sensorsystem. The idea with this project is to oversee and connect it to a cloud, where it can be further analyzed. Two cloud services are presented, whereof one of which of them are used. Several usable sensors for the washing machine have been ex-amined and presented in order to find the most appropriate sensors. A smart sensor design is presented which describes the smart sensorsystem on a hardware-and software level. Five different input-/output models are presented.As shown in the results, the most accurate input-/output model is practi-cally tested on the washing machine where the sensorvalues are sent to the cloud, through the wireless embedded sensorsystem. The sensorvalues are thereafter presented on graphs and further analyzed. Simulated graphs with different methods are presented in order to show, that these models can benefit the economy and the environment.The evaluation of the results showed that an automation of the mainte-nance is possible based upon the measurements of the chosen parameters, from the presented input-/output model for a washing machine.

Place, publisher, year, edition, pages
2014. , 101 p.
Series
TRITA-STH, 2014:34
Keyword [sv]
Inbyggda system
National Category
Other Computer and Information Science
Identifiers
URN: urn:nbn:se:kth:diva-155762OAI: oai:DiVA.org:kth-155762DiVA: diva2:763663
Subject / course
Embedded System Design
Educational program
Bachelor of Science in Engineering - Electrical Engineering
Supervisors
Examiners
Available from: 2014-12-16 Created: 2014-11-12 Last updated: 2014-12-16Bibliographically approved

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