The safety of railway traffic depends on state of the track. About ten parameters are measured on Moscow Metropolitan for rail control. At present time the contact technology is used that doesn't provide required accuracy, limits speed of movement up to 25 mph and doesn't work in real-time mode. Non-contact photonic measurement system (KSIR) is developed which can works at speeds up to 70 mph. The KSIR consists of four subsystems: rail wear, height and track gauge measurement (BFSM); rail slump measurement (FIP); contact rail measurement (FKR); speed, level and car locating (USI). KSIR contains five CCD matrix cameras, four line CCD cameras, five infrared stripe lasers and four spot infrared lasers. Preliminary image processing is carried out using digital signal processor. The images from cameras are distorted because there is angle between photonic unit and rail. Additional distortions are caused by short-focus optics and small distance between camera and track. This distance is limited by structure clearance. For distortion eliminating is applied the transformation algorithms. It's based on surfaces spline-approximation. As a result the KSIR calculates coefficients of approximating polynomials. The calibration is performed for checking accuracy of measurement in BFSM, FIP and FKR units.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    High-speed imaging and processing for rail track inspection


    Contributors:

    Conference:

    26th International Congress on High-Speed Photography and Photonics ; 2004 ; Alexandria,Virginia,United States


    Published in:

    Proc. SPIE ; 5580 ; 367


    Publication date :

    2005-03-17





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Safe rail track bed inspection by high speed radar

    Staccone, G. / Haan, E. de | Tema Archive | 2003


    High-speed rail track setting method and high-speed rail vehicle

    LIAO JIANRONG | European Patent Office | 2024

    Free access

    On track for high speed rail

    Pena, Federico | IuD Bahn | 1995


    High-speed rail heading down the track

    Moore, T. | Tema Archive | 1994


    JRC2011-56021 High Speed Rail: Track Construction Considerations

    Peterson, B.O. / American Society of Mechanical Engineers; American Society of Civil Engineers; Institute of Electrical and Electronics Engineers | British Library Conference Proceedings | 2012