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Wireless Process Control using IEEE 802.15.4 Protocol
KTH, School of Electrical Engineering (EES), Automatic Control.
2010 (English)Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Considering the potential benefits offered by Wireless Sensor Networks (WSNs), they have been becoming an interesting technology for process, manufacturing, and industrial control and Smart Grid applications. These applications motivate many companies, industrial communities and academy to focus and research in this direction.

The IEEE 802.15.4 is the standard proposed to be use in low-power communication of which WSN is part. Even though there are many implementations of the standard for the selected operating system, TinyOS, they are not fully validated or fully implemented. Moreover, in spite of the existence of previous studies using the protocol, there is no sufficient analysis of the performance of this standard.

In this thesis, a comparison between the two main implementations is done through the experiments to validate the feasibility of the implementations. Because of the fact that the selected implementation does not have the Guaranteed Time Slots (GTSs) mechanism developed, in this thesis are provided all the mechanisms necessary to transmit during the Contention-Free Period (CFP): allocation, expiration, reallocation and deallocation. Hence, a IEEE 802.15.4 implementation is provided with a comprehensive evaluation with which the behaviour is proven. The implementation is validated in terms of packet delivery rate and delay for different network configurations and different parameters.

Owing to no practical results for the use of this protocol in control applications, a inverted pendulum process is introduced to show the benefits in wireless process control by using the IEEE 802.15.4 in a real-time control loop process. The extensive experimental results show that packets losses and delays are the essential factors to guarantee the stability of the system. Furthermore, we also demonstrate and analyse the benefits of using this protocol in a Home Smart Grid setup.

Place, publisher, year, edition, pages
2010. , 126 p.
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:kth:diva-105123OAI: oai:DiVA.org:kth-105123DiVA: diva2:570074
Subject / course
Automatic Control
Educational program
Master of Science in Engineering - Electrical Engineering
Uppsok
Technology
Examiners
Available from: 2012-12-03 Created: 2012-11-16 Last updated: 2012-12-03Bibliographically approved

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CiteExportLink to record
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  • apa
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