A wheel detector is described as a method for detecting the approach of a train on a railroad without using any vehicle-mounted devices. Wheels of the train are detected as the change in the magnetic coupling between two coils located on either side of the rail. The coils are placed on one metal plate so that high sensitivity and reliability can be achieved. The wheel detector produces two fail-safe output signals having different characteristics when it fails. One output signal indicates the wheel detection state by the failure of any detector component, while the other indicates the wheel nondetection state by the failure of any detector component. Fail-safe window comparators are used to obtain these characteristics. The two binary output signals are related as mutually negative information and are produced as complementary output signals with double rails. The output signals allow fail-safe logic operations, including logic negations


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Realization of a fail-safe train wheel sensor using electromagnetic induction


    Additional title:

    Realisation eines ausfallsicheren Zugrad-Sensors mittels elektromagnetischer Induktion


    Contributors:


    Publication date :

    1989


    Size :

    7 Seiten, 9 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





    Fail-safe LAN for train control systems

    Kubota, K. / Shibuya, M. / Nishida, S. et al. | British Library Conference Proceedings | 2000



    Fail-Safe on-Board Databus for Automatic Train Protection

    Kirrmann, H / Eschermann, B / Forsgran, D | SAGE Publications | 1995


    Fail-safe on-board databus for automatic train protection

    Kirrmann, H. / Eschermann, B. / Forsgran, D. | Tema Archive | 1995