The Models of Power Lines for PLC Data Communication Systems

Bakalsk prce je zamÄena na problematiku datov© komunikace po silnoproudch veden­ch. Tato technologie je oznaÄovna jako PLC (Power Line Communication). ir­mu nasazen­ t©to technologie do praxe v souÄasnosti brn­ cel ada nedostatk. TÄmi hlavn­mi je zejm©na ruen­ uiteÄn©ho signlu na veden­, vyzaovn­ ruen­, mal dosah uiteÄn©ho signlu a prvky energetick© s­tÄ, kter© ovlivuj­ penos. Pi analze d­lÄ­ch probl©m se ukazuje, e je vhodn© m­t k dispozici poÄ­taÄov model silnoproud©ho veden­, kter by umooval poÄ­taÄovÄ simulovat datov penos po silnoproud©m veden­. Je teba slouÄit dva rozd­ln©, svm zpsobem protichdn© poadavky. Silnoproud veden­ nejsou primrnÄ urÄena pro datov penos a datov veden­ nejsou uzpsobena pro penos elektrick© energie. Oba typy veden­ jsou sice popsny stejnmi primrn­mi parametry, ale jsou provozovny v naprosto odlinch reimech. Tato prce rozeb­r tyto reimy a mon© modely silnoproudch a datovch veden­ z hlediska penosu dat. Hlavn­ Äst je vÄnovna nvrhu modelu silnoproud©ho veden­ pro datov penos a poÄ­taÄov©mu ovÄen­ funkcionality nov©ho navren©ho modelu.Bachelor's thesis is focused on the issue of data communications over power lines. This technology is known as PLC (Power Line Communication). Wider deployment of this technology into practice at present prevents a number of shortcomings. Main problems are disturbance useful signal on power lines, radiation interference, small reach of useful signal and elements of energy network, which affect the transmission. In the analysis of sub-problems, it appears that it is appropriate to have a computer power line model, allowing a computer simulation of data communication over power line. It is necessary to combine two different, conflicting requirements. Power lines are not primarily intended for data communication, and data lines are not designed for the transmission of electricity. Both types of line are described the same primary parameters, but they operate in completely different modes. This thesis examines these modes and possible models of power and data lines in terms of data communication. The main part is devoted to the draft power line model for data communication and computer verification of the functionality of the new proposed model.