Digital transmission of cab signalling and train control data to moving trains using railway track circuits may be achieved with FSK modulation of an audio frequency carrier signal. By transmitting coded data, information concerning train location and system status may be carried in addition to safety commands such as target speeds. The distributed nature of raillway control systems using track circuits for train detection and track-train data transmission requires the use of coding schemes that tolerate sudden discontinuities at track circuit boundaries in addition to being able to operate in a high noise environment. With audio frequency jointless track circuits, severe constraints are imposed on the transmission frequencies by the characteristics of the electrical separation joint, resulting in low data rates. The paper describes several coding schemes that may be used to overcome the resulting synchronization and error-control problems.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Synchronizable error-control coding for railway track circuit data transmission


    Weitere Titelangaben:

    Synchronisierbare Kanalcodier-Verfahren fuer die Datenuebertragung zu fahrenden Zuegen


    Beteiligte:
    Hill, R.J. (Autor:in) / Weedon, D.N. (Autor:in)


    Erscheinungsdatum :

    1987


    Format / Umfang :

    8 Seiten, 5 Bilder, 4 Tabellen, 11 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch






    RAILWAY TRACK CIRCUIT MONITOR

    FOX SIMON WILLIAM | Europäisches Patentamt | 2018

    Freier Zugriff

    RAILWAY TRACK CIRCUIT SHUNT ENCLOSURE

    SAGE DEVIN STEVEN / IBARRA MARCO ANTONIO / PENA ANGEL GUSTAVO CERECERES | Europäisches Patentamt | 2023

    Freier Zugriff

    Encoder/decoder system for a rapidly synchronizable binary code Patent

    Anderson, T. O. / Stiffler, J. J. | NTRS | 1971