Accurate and consistent data on railway-track quality is required from which track-maintenance action can be scheduled. In recent years two recording vehicles have been designed by British Rail: A high-speed track-recording coach (HSTRC) to provide maintenance data for the Civil Engineering Department, and a self-propelled diesel multiple unit used by the Research and Development Division for investigative work. For HSTRC a measuring system was need which would be reliable under intensive running conditions, and which could be fitted to a standard coach with the minimum of mechanical modification. Conventional multiwheel or multiprobe systems were rejected because of the consierable mechanical complexity of the undergear, in favour of a single-point system using inertial techniques and measuring in the vertical plane through the running wheels and in the horizontal plane through noncontacting optical-scanning equipment. The inertial measuring system uses transducers, including accelerometers, rate gyroscopes and displacement transducers which provide inputs to special-purpose electronic processing networks which provide the required profiles. Onboard computer systems analyse the data to form track-quality estimates which are listed and recorded on magnetic tape for transfer to a central mainframe data bank. Operation of the track-recording coach iscontrolled by an automatic route-definition procedure using data stored on a central track-route data bank.


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    Title :

    Track-recording techniques used on Briitsh rail


    Additional title:

    Bei der britischen Eisenbahn benutzte Gleisaufzeichnungstechnik


    Contributors:
    Lewis, R.B. (author)


    Publication date :

    1984


    Size :

    9 Seiten, 15 Bilder, 6 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Track recording techniques used on british rail

    Lewis, R.B. | Tema Archive | 1981



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