Repository logo

Timed power line data communication

dc.contributor.advisorDodds, David E.en_US
dc.contributor.committeeMemberNguyen, Ha H.en_US
dc.contributor.committeeMemberMcCrosky, Carlen_US
dc.contributor.committeeMemberKo, Seok-Bumen_US
dc.contributor.committeeMemberDeters, Ralphen_US
dc.contributor.committeeMemberBolton, Ronald J.en_US
dc.creatorAckerman, Kevin Wen_US 2005en_US
dc.description.abstractWith the ever increasing demand for data communication methods, power line communication has become an interesting alternative method for data communication. Power line communication falls into two categories: one for data transmission between sites in the power grid and the other for home or office networking. When considering home or office networking, existing methods are either too slow for tasks other than simple automation, or are very fast with a higher cost than necessary for the desired function. The objective in this work is to develop a lower cost communication system with an intermediate data transmission rate.At first glance, power line communication looks like a good option because of the availability of power outlets in every room of a building. However, the power conductors were installed solely for the purpose of distributing 60 Hz mains power and, for data signals, they exhibit very high attenuation, variable impedance and there is radio frequency shielding. Furthermore, many of the 60 Hz loads produce radio frequency interference that impedes data communication. Previous research has shown that much of the noise is time synchronous with the 60 Hz mains frequency and that the majority of data errors occur during these periods of high noise. This work develops a power line communication protocol that coordinates transmissions and uses only the predictable times of lower noise. Using a central control strategy, the power line 60 Hz mains signal is divided into 16 timeslots and each timeslot is monitored for errors. The central controller periodically polls all stations to learn which timeslots have low noise and it then controls all transmissions to make the best use of these good timeslots. The periodic polling allows the system to adapt to changes in electrical loading and noise. This control strategy has been achieved with modest complexity and laboratory measurements have shown throughput approaching 70% of the modem bit rate.en_US
dc.subjectLAN protocolsen_US
dc.subjecthome networkingen_US
dc.subjectData communicationen_US
dc.subjectpower lineen_US
dc.subjectsynchronous noiseen_US
dc.titleTimed power line data communicationen_US
dc.type.materialtexten_US Engineeringen_US Engineeringen_US of Saskatchewanen_US of Science (M.Sc.)en_US


Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
983.84 KB
Adobe Portable Document Format
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
905 B
Plain Text