Thesis (MScEng) -- Stellenbosch University, 2004. / ENGLISH ABSTRACT: Wireless Area Network technology for industrial and factory applications is important
for satisfying inflexible (safety-critical) real-time requirements in sometimes harsh environments.
Many of these applications involve mobile subsystems and could benefit from
recent Wireless LAN technologies replacing the current cable-based systems. An immediate
question is how this technology can be used for wireless Area Network systems?
An important aspect of this question is the development of time-variable wireless links
with good real-time performance. This project will attempt to answer some aspects of
this question. The main objective of this thesis is to create a wireless area network for
instrumentation purposes, interconnecting various monitoring and control transducers to
a central master station.
This project focuses on three transmission technologies used for wireless LANs with low
power consumption; capable of close range positioning, indoors as well as outdoors. These
transmission technologies are Infrared LAN (IrDA), Spread Spectrum LAN and Narrowband
Microwave LAN. As a result of the evaluation of the three technologies, an Infrared
LAN (IrDA) system was implemented as an area network, utilising an IrLAP protocol
(Master and Slave) as a communication protocol. The Master is enabled to monitor and
control all slaves interfaced to it. / AFRIKAANSE OPSOMMING: Draadlose netwerktegnologie vir industrietoepassings, is nodig om aan te pas by spesifieke
veiligheids- en omgewingstoestande. Baie van hierdie toepassings het betrekking
op mobiele substelsels en kan baat by vervanging van bekabeling met onlangse draadlose
netwerktegnologie. Die ontwikkeling van sulke netwerke met goeie tydreaksie, is hier
belangrik. Die hoofdoel van hierdie tesis is om ’n draadlose areanetwerk te skep vir instrumentasiedoeleindes,
wat verskeie monitor-en beheeromsetters aan ’n sentrale meesterstasie
sal verbind.
Hierdie projek fokus op 3 sulke benaderings, nl. Infrarooi AN (IrDA), Spreispektrum AN
en Nouband Mikrogolf AN. Na ondersoek is ’n stelsel gebaseer op IrDA, geimplementeer as
areanetwerk, met behulp van die IrLAP protokol. Die meester beheer alle kommunikasie
met- en beheeraksies van die buitestasies.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:sun/oai:scholar.sun.ac.za:10019.1/49990 |
| Date | 12 1900 |
| Creators | Tshikalaha, Takalani Raymond |
| Contributors | Wolhuter, R., Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. |
| Publisher | Stellenbosch : Stellenbosch University |
| Source Sets | South African National ETD Portal |
| Language | en_ZA |
| Detected Language | English |
| Type | Thesis |
| Format | 97 p. : ill. |
| Rights | Stellenbosch University |
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