Development of Algorithms for Improving Fiber-Optical Rail Circuit on Railway Spans

N. Mgebrishvili, M. Iavich, Tengiz Tabidze, A. Nodia
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Abstract

For the safety of train traffic, the most important step is the introduction of a new type of rail circuits — fiber-optic rail circuits. The high sensitivity of the fiber optic cable to external influences (deformation, vibration) is an important property both for fixing mechanical damage to rails and for monitoring railway rolling stock. The branches (fragments) of the optical fiber through mechanical amplifiers perform both the functions of the information perception element — the sensor and the conducting channel of the transmitted information. Using reflectometer OTDR (Optical Time Domain Reflectometer), based on the analysis of the backscattered light signal, the form of the effect that caused the bending is determined. Knowing the exact distance between the OTDR and the sensors, when analyzing the received signals, it is possible to determine different parameters of the passing rolling stock. The article shows the schematic diagram and the algorithm of the proposed system developed by the authors.
铁路跨径光纤轨道电路改进算法的发展
为了保证列车交通的安全,最重要的一步是引入一种新型的轨道电路——光纤轨道电路。光纤电缆对外界影响(变形、振动)的高灵敏度是固定轨道机械损伤和监测铁路车辆的重要特性。通过机械放大器的光纤分支(片段)既充当信息感知元件——传感器的功能,又充当传输信息的传导通道。利用反射计OTDR (Optical Time Domain reflectometer),在分析后向散射光信号的基础上,确定了引起弯曲效应的形式。了解OTDR与传感器之间的确切距离,在分析接收到的信号时,可以确定通过车辆的不同参数。文章给出了作者开发的系统的原理图和算法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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