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Development and Validation of a Low-Cost External Signal Acquisition Device for Smart Rail Pads: A Comparative

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A new External Signal Acquisition Device (ESAD) offers a cost-effective solution for railway monitoring. This device reliably captures smart rail pad data, comparable to expensive commercial modules, for infrastructure maintenance.

Keywords:
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Area of Science:

  • Railway Engineering
  • Infrastructure Monitoring
  • Sensor Technology

Background:

  • Cost-effective and reliable railway monitoring is essential for infrastructure maintenance.
  • Smart rail pads offer a promising method for monitoring wheel-track interactions.
  • Robust signal data acquisition and analysis frameworks are needed for practical implementation.

Purpose of the Study:

  • To validate a custom-designed External Signal Acquisition Device (ESAD) for smart rail pads.
  • To compare the ESAD's performance against a high-precision commercial analog module.
  • To assess the ESAD's suitability for large-scale railway monitoring applications.

Main Methods:

  • Laboratory-scale and full-scale experiments simulating real-world railway conditions.
  • Comparative performance analysis between the custom ESAD and a commercial module.
  • Evaluation of signal dispersion, load-to-signal linearity, and reliability under varying conditions.

Main Results:

  • The custom ESAD demonstrated comparable performance to the commercial module.
  • ESAD showed reduced signal dispersion with increased load and train speed.
  • The device maintained over 95% reliability in analyzing load-to-signal linearity.

Conclusions:

  • The ESAD presents a viable, cost-effective alternative to expensive commercial modules for railway monitoring.
  • It offers a balance between functionality and cost, suitable for widespread adoption.
  • This technology supports preventive maintenance and enhances overall railway infrastructure performance.