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Automatic Extraction of Power Cables Location in Railways Using Surface LiDAR Systems.

Alexis Gutiérrez-Fernández1, Camino Fernández-Llamas1, Vicente Matellán-Olivera1

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Summary
This summary is machine-generated.

A new LiDAR-based system accurately measures railway contact wire height and stagger, reducing manual inspection time and errors. This automated approach ensures efficient maintenance and reliable operation of electrified railway systems.

Keywords:
LiDARautomatic point cloud analysisoverhead contact linerailway

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Area of Science:

  • Engineering
  • Transportation Technology
  • Geospatial Analysis

Background:

  • Electrified railway systems rely on contact wires for power collection, necessitating regular inspections.
  • Traditional manual inspection methods for contact wire height and stagger are labor-intensive and error-prone.
  • Accurate monitoring of contact wire condition is crucial for operational safety and efficiency.

Purpose of the Study:

  • To introduce a novel, automated system for assessing the condition of railway contact and messenger wires.
  • To develop a seven-step method for identifying and measuring contact wire height and stagger using LiDAR data.
  • To evaluate the system's applicability in both assembly and maintenance phases, and for post-recording analysis.

Main Methods:

  • Utilizing a LiDAR system to record detailed point cloud data of railway infrastructure.
  • Implementing a seven-step algorithm to process point clouds, identify contact wires, and measure their geometric parameters (height and stagger).
  • Validating the new method through comparative analysis against traditional measurement techniques in controlled test bench and real-world railway environments.

Main Results:

  • The developed LiDAR-based system demonstrated high accuracy, with measurement differences of less than one centimeter on average compared to conventional methods.
  • Significant reduction in the time required for the measurement phase was achieved.
  • The automated system proved to be less prone to human error than manual inspection.

Conclusions:

  • The new LiDAR-based method offers a precise, efficient, and reliable alternative for monitoring railway contact wire status.
  • This system can be effectively integrated into the assembly and maintenance workflows of electrified railways.
  • The findings support the adoption of automated geospatial technologies for railway infrastructure management.