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Remote Diagnostics of Heavy Trucks through Telematics
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
2013 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [sv]

Fordonsdiagnostik blir mer och mer sofistikerad i takt med att antaletoch komplexiteten hos inbyggda fordonsdatorer växer. Datorstödd diagnos med hjälp av en PC som kör en diagnosapplikation är en nyckelfaktor inom reparation och underhåll. Allt eftersom att utvecklingen inom web-baserade tjänster har vuxit under senare år har även fordonstillverkare börjat undersöka vilka web-baserade tjänster som kan byggas in i deras fordon. Ett intresseområde är fjärrdiagnostik, dvs diagnos-kommunikation över internet. Scania har nyligen lanserat en web-baserad tjänst för fordonsdiagnos, där användaren kan beställa en utläsning av felkoder på ett fordon av nyare modell, och sedan få resultatet presenterat i en webläsare. Dock så erbjuder den nuvarande tjänsten endast begränsad funktionalitet jämfört med vad som är möjligt med diagnosapplikationen som används då ett fordon tas in till en verkstad. Den här rapporten presenterar en arkitektur som gör det möjligt att utföra samma typer av operationer över trådlöst WAN som idag endast görs med diagnosverktyget anslutet till fordonet via usb-kabel eller lokal wifi. En stor del av detta arbete har inneburit att utveckla en plattform som prototyp för att demonstrera systemet.

Abstract [en]

Vehicle diagnostics is getting more and more sophisticated as the number and complexity of on-board computers grow. The use of computer aided diagnostics has become an integral part of repair and maintenance, but it is still almost exclusively used with the PC physically connected to the vehicle or at least very close by a few meters. Web based services in ”in-vehicle-infotainment” 1 (IVI) has grown rapidlyover the last couple of years and as vehicle diagnostics belongs to IVI, it is natural for it to strive towards the web. This thesis has been carried out with the aim to investigate and demonstrate the possibility of remote diagnostics, meaning vehicle diagnostics over the internet. It has been done with the perspective of real-time user interaction 2. The report describes the diagnostic system as it is today, proposes changes needed for the adaptation towards the internet, discusses performance over mobile networks and guides the reader through the development of a remote diagnostics application run over 3G. This thesis shows that it is possible to run a diagnostic application over the internet without sacrificing functionality and still retaining a good user experience. The difficulties of remote diagnostics has shown not to lie in performance, but in safety, security and managing a large fleet, which belongs to future work to solve. 1 Solutions and applications for automobiles ranging from entertainment to navigation and maintenance, as defined by Accenture [1]. 2 In this sense real-time addresses the users feeling of instant response.

Place, publisher, year, edition, pages
2013. , 68 p.
Series
MMK 2013:69 MDA 458
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-141122OAI: oai:DiVA.org:kth-141122DiVA: diva2:694754
Supervisors
Examiners
Available from: 2015-10-15 Created: 2014-02-07 Last updated: 2015-10-15Bibliographically approved

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