Defects in railroad tracks are responsible for several incidents every year. Rail gage is one of the most important measurements for track maintenance because deviations in gage indicate where potential defects may exist. In addition, missing rail fasteners can be considered a critical defect that should be detected and repaired because missing fasteners are a common cause of gage misalignment issues. An improvement or enhancement to the currently available automatic inspection system specifically devised to estimate rail gage and detect missing rail fasteners is presented. A three-dimensional (3-D) imaging sensor, which produces high-resolution two-dimensional images and 3-D profiles, is used to capture the data. Then a range-based approach is used to inspect the railroad track. The 3-D structure of the rail components (rail heads and rail fasteners) is relied on instead of a vision-based approach, which suffers from illumination changes. The system is evaluated with data recorded from real scenarios in two cities (Metro Madrid in Spain and the London Underground) with different nominal gage values and fastening elements. The system is described, and results are presented, evaluated, and discussed.


    Access

    Download

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Detection of Range-Based Rail Gage and Missing Rail Fasteners


    Subtitle :

    Use of High-Resolution two- and Three-Dimensional Images


    Additional title:

    Transportation Research Record




    Publication date :

    2014-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Rail gage-based risk detection Using iPhone 12 pro

    Ren, Yihao / Dai, Zhenyu / Lu, Pan et al. | SAGE Publications | 2023


    RAIL VEHICLE BASED DEPLOYABLE GAGE RESTRAINT MEASUREMENT SYSTEM

    BLOOM JEFFREY ALAN / CLEMENZI JACINDA LEAH / KIM ANTHONY KWAN et al. | European Patent Office | 2018

    Free access


    RAIL VEHICLE BASED DEPLOYABLE GAGE RESTRAINT MEASUREMENT SYSTEM

    BLOOM JEFFREY ALAN / CLEMENZI JACINDA LEAH / KIM ANTHONY KWAN et al. | European Patent Office | 2019

    Free access

    Rail vehicle based deployable gage restraint measurement system

    BLOOM JEFFREY ALAN / CLEMENZI JACINDA LEAH / KIM ANTHONY KWAN et al. | European Patent Office | 2018

    Free access