This application describes method and apparatus for detecting train separation, where one or more railway cars/carriages (401) accidentally decouple from the rest of the train. The method involves performing distributed acoustic sensing on at least one optical fibre (104a, 104b) to provide a plurality of longitudinal acoustic sensor portions along the railway (201). The acoustic response is analysed to detect a signature indicative of a train separation. This may involve detecting acoustic events (302, 303) associated with different parts of the train and detecting when the separation between the two events exceeds a threshold amount. The method may identify the front of the train and the rear of the train and detect when the distance between the front and rear changes by more than a threshold amount and/or sounds associated with wheelsets passing track features (402) may be used to determine the intervals (T3, T4) between wheelsets of adjacent cars and determine when the interval exceeds a threshold amount. The threshold may be based on the interval (T2) between wheelsets of the same car passing the track feature.


    Access

    Download


    Export, share and cite



    Title :

    DETECTING TRAIN SEPARATION


    Additional title:

    ERKENNUNG EINER ZUGTRENNUNG
    DÉTECTION DE LA SÉPARATION D'UN TRAIN


    Contributors:
    KELLEY JOHN (author)

    Publication date :

    2017-05-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC



    DETECTING TRAIN SEPARATION

    KELLEY JOHN | European Patent Office | 2022

    Free access

    TRAIN DETECTING DEVICE, TRAIN DETECTING SYSTEM, AND TRAIN DETECTING METHOD

    MYOKEI KENICHI / TAKAGI SHUICHI / ASUKA MASASHI | European Patent Office | 2021

    Free access

    TRAIN POSITION DETECTOR, TRAIN STOP DETECTOR, TRAIN POSITION DETECTING METHOD, AND TRAIN STOP DETECTING METHOD

    MARUSHITA TAIJI / NAGAYAMA ARISATO | European Patent Office | 2017

    Free access

    TRAIN SPEED DETECTING DEVICE, AND TRAIN SPEED DETECTING METHOD

    ASANO AKIRA / TSUBOTA HIKARU / INABA NORIYUKI et al. | European Patent Office | 2015

    Free access

    Positive Train Separation

    American Railway Engineering Association | British Library Conference Proceedings | 1996