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Author:Silvo, Joni
Title:Reliable communication protocol for real-time wireless automation
Publication type:Master's thesis
Publication year:2011
Pages:ix + 99      Language:   eng
Department/School:Automaatio- ja systeemitekniikan laitos
Main subject:Systeemitekniikka   (AS-74)
Supervisor:Koivo, Heikki
Instructor:Eriksson, Lasse
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
Instructions

Reading digital theses in the closed network of the Aalto University Harald Herlin Learning Centre

In the closed network of Learning Centre you can read digital and digitized theses not available in the open network.

The Learning Centre contact details and opening hours: https://learningcentre.aalto.fi/en/harald-herlin-learning-centre/

You can read theses on the Learning Centre customer computers, which are available on all floors.

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Location:P1 Ark Aalto  7452   | Archive
Keywords:wireless sensor networks
real-time networking
wireless automation
reliability
communication protocol
langattomat anturiverkot
reaaliaikainen tiedonsiirto
langaton automaatio
luotettavuus
tiedonsiirtoprotokolla
Abstract (eng): Recent development in the field of wireless sensor networks (WSNs) has led to grown interest towards applying wireless technology in the industry.
The wireless sensor networks could provide a cost efficient and highly flexible solution for various industrial applications such as process monitoring and even real-time control.
However, the wireless technology is still hindered by a number of issues related to the reliability of the communications before the technology can be fully utilized.

Considerable research effort has been put into developing reliable communications solutions for wireless sensor networks.
This thesis presents the various aspects that need to be taken into account when designing a reliable wireless communication system that could be utilized in industrial applications.
The basics of the wireless communications utilizing radio frequencies are introduced and relevant standards reviewed.
Furthermore, the challenges related to wireless communication and several methods to counteract some of the most relevant problems from automation point of view are discussed.

Based in the gathered knowledge a reliable communication solution for WSNs in real-time applications is derived.
Results from extensive industrial testing are also presented and analysed.
The proposed solution adopts various methods to improve the reliability or wireless communications but still remains as a simple and easy to implement on any WSNs platform.
The results indicate that the methods adopted in the protocol offers means for reliable real-time communications.
Abstract (fin): Viimeaikainen kehitys langattomassa anturiverkkoteknologiassa on johtanut teollisuuden lisääntyneeseen kiinnostukseen langatonta tekniikkaa kohtaan.
Langattomat anturiverkot voisivat tarjota teollisuuteen kustannustehokkaan ja joustavan alustan prosessien valvontaan ja mahdollisesti jopa reaaliaikaiseen ohjaukseen.
Toistaiseksi langattomaan tiedonsiirtoon liittyvät haasteet ovat kuitenkin rajoittaneet anturiverkkojen käyttöä lähinnä ei-reaaliaikaiseen tiedonkeruuseen.

Langattomien anturiverkkojen tiedonsiirtoratkaisuihin on käytetty huomattavia tutkimusresursseja viime vuosina.
Tässä diplomityössä esitellään langattomaan tiedonsiirtoon liittyviä haasteita. jotka tulee huomioida suunniteltaessa teollisuuden käyttöön soveltuvaa luotettavaa langatonta tiedonsiirtoratkaisua.
Radiotekniikan perusteella langattomiin anturiverkkoihin liittyvät keskeiset standardit esitellään työssä.
Lisäksi langattoman tiedonsiirron haasteet käydään läpi ja esitellään menetelmiä ongelmien vaikutusten vähentämiseksi erityisesti automaation näkökulmasta.

Kerätyn tiedon pohjalta työssä kehitettiin reaaliaikasovelluksiin tähtäävä luotettava tiedonsiirtoratkaisu langattomille anturiverkoille.
Teollisessa ympäristössä suoritettujen kattavien testausten tulokset esitellään ja analysoidaan.
Kehitetty ratkaisu hyödyntää useita esiteltyjä menetelmiä langattoman tiedonsiirron luotettavuuden parantamiseksi, mutta se on silti yksinkertainen ja toteutettavissa monille anturiverkkoalustoille.
Tulokset osoittavat että protokollaan valitut menetelmät mahdollistavat luotettavan ja reaaliaikaisen langattoman tiedonsiirron.
ED:2011-08-16
INSSI record number: 42655
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