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A wireless low latency control system for harsh environments
Mälardalens högskola, Akademin för innovation, design och teknik. (IS)
Mälardalens högskola, Akademin för innovation, design och teknik. (IS)ORCID-id: 0000-0003-4298-9550
Mälardalens högskola, Akademin för innovation, design och teknik. (IS)ORCID-id: 0000-0002-2419-2735
Mälardalens högskola, Akademin för innovation, design och teknik. (IS)ORCID-id: 0000-0002-5832-5452
Visa övriga samt affilieringar
2012 (Engelska)Ingår i: IFAC Proceedings Volumes (IFAC-PapersOnline): Vol. 11, PART 1, 2012, s. 17-22Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

The use of wireless communication technologies in the industry offer severaladvantages. One advantage is the ability to deploy sensors where they previously could noteasily be deployed, for instance on parts that rotate. To use wireless communication in industrialcontrol loops, demands on reliability and latency requirements has to be met. This in anenvironment that may be harsh for radio communication. This work presents a reliable, lowlatency wireless communication system. The system is used in a wireless thyristor control loopin a hydro power plant generator. The wireless communication is based on Bluetooth radiomodules. The work shows a latency analysis together with empirical hardware based latencyand packet error rate measurements. The background noise of a hydro power plant station isalso investigated. The average latency between the Bluetooth modules for the proposed systemis 5.09 ms. The packet error rate is 0.00288 for the wireless low latency control system deployedin a hydro power plant.

Ort, förlag, år, upplaga, sidor
2012. s. 17-22
Nationell ämneskategori
Kommunikationssystem
Forskningsämne
elektronik
Identifikatorer
URN: urn:nbn:se:mdh:diva-14719ISI: 000344655200005Scopus ID: 2-s2.0-84880915283ISBN: 9783902823144 (tryckt)OAI: oai:DiVA.org:mdh-14719DiVA, id: diva2:532924
Konferens
11th IFAC/IEEE Conference on Programmable Devices and Embedded Systems – PDES 2012, May 23 - 25, 2012 Brno, Czech Republic
Tillgänglig från: 2012-06-12 Skapad: 2012-06-12 Senast uppdaterad: 2018-08-08Bibliografiskt granskad
Ingår i avhandling
1. Towards Predictable and Reliable Wireless Communication in Harsh Environments
Öppna denna publikation i ny flik eller fönster >>Towards Predictable and Reliable Wireless Communication in Harsh Environments
2013 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Wireless communication in industrial, scientific and medical applications have several benefits. The main benefits when using wireless technologies include ease-of-deployment, the simplicity to introduce new units into the network and mobility. However it also put higher demands on the communication, including reliability and predictability compared to wired communication. The reliability issues correlate to the radio communication and the possibility to ensure that the user data is received, and within the time frame of the system requirements. This doctoral thesis presents an empirical measurement approach to investigate and model the behaviour linked to reliability and predictability. The focus of the work presented is energy consumption, packet-error-rate and latency studies. This is performed for various radio technologies and standards in (radio?) harsh environments. The main contributions of this thesis are the measurements platforms and procedures that have been developed to meet the requirements to investigate modern radio technologies in terms of predictability and reliability. This thesis show that it is possible to predict wireless communication in radio harsh environments. However it is necessary to determine the characteristics of the environment to be able to choose a suitable radio technology. The measurement procedures presented in this thesis alongside the platform developed enable these types of investigations. In this thesis a model of the energy consumption for a Bluetooth radio in low-duty-cycle applications with point-to-multipoint communication is presented. The measurements show that distance and transmission power will not effect the energy consumption for a Bluetooth nor ZigBee module. However the packet-error-rate and number of retransmissions will affect the overall energy consumption, and these parameters can be correlated to distance and foremost the environmental characteristics. This thesis also presents two application-based solutions, a time synchronized ECG network with reliable data communication as well as a low-latency wireless I/O for a hydro plant.

Ort, förlag, år, upplaga, sidor
Mälardalen University, 2013
Serie
Mälardalen University Press Dissertations, ISSN 1651-4238 ; 134
Nyckelord
Wireless, Reliable, predictable, Bluetooth, Zigbee, hardware development, measurements
Nationell ämneskategori
Teknik och teknologier
Forskningsämne
elektronik
Identifikatorer
urn:nbn:se:mdh:diva-16413 (URN)978-91-7485-098-7 (ISBN)
Disputation
2013-01-25, Lambda, Mälardalens högskola, Västerås, 10:15 (Engelska)
Opponent
Handledare
Projekt
TeslaGauss
Tillgänglig från: 2012-12-06 Skapad: 2012-12-06 Senast uppdaterad: 2012-12-14Bibliografiskt granskad

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Björkman, MatsEkström, MikaelLindén, Maria

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