Electrical Modelling of an Audio Frequency Track Circuit, Validation & Reliability Evaluation

Document Type : Scientific - Research

Authors
Seyed Ahmad Miraboutalebi 1
Bahman Ghorbani Vaghei 2
1 M.Sc., Department of Control and Signaling, School of Railway Engineering, Iran University of Science and Technology, Tehran, Iran
2 Assistant Professor, Department of Control and Signaling, School of Railway Engineering, Iran University of Science and Technology, Tehran, Iran
10.22119/jte.2025.446903.2700
Abstract
Track circuits are key electrical devices which are used to detect the presence of trains in different railway tracks. Correct and fail-safe functions are of great significance in track circuits. Therefor researchers are looking for different methods for function control, tracking and identification of faults in such circuits. Subsequently in the initial stage, it is vital to have a clear and comprehensive understanding of how a circuit operates. In this step track circuit modelling becomes very helpful. This article describes the different components of audio frequency track circuit models in addition to presenting a comprehensive systematic model for such circuits. The output of all components conform to data measurements of an operational line of a Metro system and modeling is approved in terms of validation accuracy. Also with the help of an extracted model for audio frequency track circuit and with consideration to the track circuits fault tree, evaluations are conducted based on each of the components of the entire track circuit.

Keywords

Subjects

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Quarterly Journal of Transportation Engineering
Volume 16, Issue 4 - Serial Number 65
Spring 2025
Pages 4861-4879

  • Receive Date 13 April 2024
  • Revise Date 27 November 2024
  • Accept Date 17 December 2024