TEHNOLOGIJA RDS-TMC KOT VIR PROMETNIH INFORMACIJ

HROVATIN, DEJAN (author), Pogačnik, Matevž (mentor)

V pričujoči magistrski nalogi je obravnavana tehnologija RDS-TMC (angl. Radio Data System – Traffic Message Channel) kot ena najbolj obetajočih brezplačno dostopnih tehnologij za podajo prometnih informacij na slovenskih tleh. V svetu je tehnologija že dolgo poznana, pri nas pa še niti ni dobro zaživela, saj tehnologijo za slovensko območje trenutno podpira le manjši delež navigacijskih naprav. V kratkem se namerava to spremeniti, saj je bil v začetku junija 2016 narejen velik korak z izdelavo nove in hkrati brezplačne lokacijske tabele. Ob primerjavi s prometnimi informacijami s spletnega portala Promet.si, ki je bil uporabljen kot referenčni vir tovrstnih informacij, so bile ugotovljene razne omejitve te tehnologije, za katere je dobro, da jih kot vozniki spoznamo. Je tehnologija RDS-TMC za prenos prometnih informacij še primerna za tempo današnjega življenja (prometa)? Prvo poglavje se začne z opisom teoretičnega ozadja modulacije FM (angl. Frequency modulation). Sledi opis sestave MPX (angl. Multiplex) spektra FM radijske postaje, ki ga sestavlja sistem RDS. V slednjem deluje tudi tehnologija TMC. Naslednje poglavje predstavlja sistem RDS. Po krajši predstavitvi zgodovine razvoja je predstavljeno delovanje sistema in njegove funkcionalnosti. V poglavju se dotaknemo tudi sistema RDS2, ki naj bi v bližnji prihodnosti zamenjal trenutni sistem RDS in s tem odpravil njegove številne omejitve in pomanjkljivosti. Tretje poglavje predstavlja tehnologijo TMC. Po predstavitvi zgodovine razvoja sledi osnovna, zatem pa še poglobljena predstavitev ozadja delovanja. V tem okviru je predstavljena tudi razdelitev cestnega omrežja Slovenije, kot ga razdeli novejša slovenska lokacijska tabela. V poglavju spoznamo tudi način podajanja podatkov TMC v skupinah RDS. V osrednjem delu je zajeto načrtovanje sprejemnika podatkov TMC, od ideje pa do končne realizacije. Predstavljen je diagram poteka programskega algoritma. V poglavju, ki sledi, je predstavljen zajem prometnih informacij preko tehnologije TMC. Prikazan je tudi potek obdelave v programskem okolju MATLAB. Znotraj tega poglavja se dotaknemo še portala Promet.si in načina podajanja prometnih informacij na portalu. Ob kratki statistiki je narejena primerjava zanimanja po prometnih informacijah, med obiskovalci portala Promet.si in telefonskega odzivnika PIC (Prometno informacijskega centra). S pomočjo izdelanega sprejemnika sporočil TMC in istočasno iz portala Promet.si zajetih prometnih informacij, spoznamo omejitve, ki jih tehnologija TMC prinaša pri podajanju prometnih informacij.

• Language: Slovenian
• Keywords: FM, RDS, RDS2, TMC, MATLAB, prometni dogodki, prometne informacije
• Work type: Master's thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2016
• PID: 20.500.12556/RUL-85119
• Publication date in RUL: 13.09.2016

Secondary language

• Language: English
• Title: RDS-TMC TECHNOLOGY AS A SOURCE OF TRAFFIC INFORMATION

Abstract

The present master thesis addresses the topic of RDS-TMC technology, which is intendeed for transmission of traffic information. This technology has been known worldwide for several decades, while in Slovenia it has existed only for the last seven years. Today, a very low number of navigational devices can receive TMC information in Slovenia, because the first Slovenian location table has not been available free of charge until recently. There will be a big change in the near future, because DARS d. d. company with colaboration in Realis d. o. o. company made a new location table for Slovenia in June 2016, which is free of charge. This will expand the use of this technology in Slovenia in the near future a lot. Compared to a reference source of traffic information (web portal Promet.si), limitations of techonolgy TMC have been found. These limitations must be known to drivers. The question is: how useful is technology TMC today for high-quality transmission of traffic information? In the first chapter, we realize background of FM modulation and MPX spectrum, which includes RDS-system (techonolgy TMC works in). The next chapter talks about RDS-system. After a short presentation of the history of the system RDS, an operation description of the system RDS is introduced. In the last part, the system RDS2 is also introduced as a successor of the system RDS. The third chapter taks about TMC-techonology. After a short presenation of the history, background of techonolgy is introduced. Then division of road network in newer location table is shown and inserting TMC messages in the system RDS is described. In the main chapter, the process of making receiver of TMC messages is described. A flow chart of the program's algorithm is shown and described. In the next chapter, the process of capturing data via TMC-techonology is described. Processing of this data in software environment MATLAB is described and also the traffic information on web portal Promet.si are introduced. In this chapter, statistics of calls on PIC and visitors on PIC web page for the last 5 years are also described. In conclusion, on the basis of received TMC messages and traffic information from the reference (portal Promet.si), we realize limits of TMC technology, which are described in the last chapter.

• Keywords: FM, RDS, RDS2, TMC, traffic events, traffic information