Modular Fault Diagnosis in Fixed-Block Railway Signaling Systems

Mustafa S. Durmus, İlker Ustoglu, Roman Y. Tsarev, Michael Schwarz

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


The diagnosis of possible faults in railway signaling systems is an important issue to provide safe travel and transportation in railways. Signaling system designers have to consider the possible faults which may occur in railway field components both on the requirements preparation phase and on the development phase of the signaling system software or namely, the interlocking system. Although the diagnosis of different unobservable faults is relatively hard, especially for large scale railway fields, this complexity can be overcome by using the Discrete Event System (DES) based modular diagnosis approach which is explained in this paper. The main advantage of using such modular approach for fault diagnosis in fixed-block signaling systems is the inspection of the diagnosability of the whole system with respect to its subsystems (railway field components). In this study, the diagnosability of the railway field equipment and the whole system is also explained with a case study.

Original languageEnglish
Pages (from-to)459-464
Number of pages6
Issue number3
Publication statusPublished - 2016
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2016


This work is supported by The Scientific and Technological Research Council of Turkey (TÜBİTAK) project number 115E394 – Fail-Safe PLC implementation of Interlocking System Design with Fault Diagnosis capability for Fixed-block Railway Signaling Systems.

FundersFunder number
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu


    • Discrete Event Systems
    • Fixed-Block Railway Signaling Systems
    • Modular Fault Diagnosis


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