Deep learning-based data anomaly detection in rail track inspection

Si Xin Chen, Yi Qing Ni, Jin Chao Liu, Nan Yao

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Comprehensive inspection trains (CITs) run over the whole railway network in China and collect a huge amount of data. Occasionally, due to equipment faults or environmental interference, data anomalies appeared which affected the subsequent data processing and analysis. Visual inspection of these anomalies is time-consuming, tedious and subjective. A more automatic way is desired. In this study, this task is considered as an image classification problem to leverage the power of deep learning, which has become a powerful tool in almost every research area in recent years. The multichannel data collected from CITs are normalized, windowed and encoded into images to build a training data set. Each sample is marked with a label that represents the condition in which it was collected. A convolutional neural network (CNN) is then formulated, in which the filters are set to only slide the horizontal direction to imitate humans' judgment process with the assumption that translation invariance only exists in this direction. Different from the conventional approaches that can only detect data anomalies of a single channel, this deep learning-based approach enables to further integrate multichannel information to find out the cause of data anomalies. It is shown that the approach can achieve satisfactory accuracy in either binary and multi-class classification and thus release the practitioners from the tedious task.

Original languageEnglish
Title of host publicationStructural Health Monitoring 2019
Subtitle of host publicationEnabling Intelligent Life-Cycle Health Management for Industry Internet of Things (IIOT) - Proceedings of the 12th International Workshop on Structural Health Monitoring
EditorsFu-Kuo Chang, Alfredo Guemes, Fotis Kopsaftopoulos
PublisherDEStech Publications Inc.
Pages3235-3242
Number of pages8
ISBN (Electronic)9781605956015
Publication statusPublished - 1 Jan 2019
Event12th International Workshop on Structural Health Monitoring: Enabling Intelligent Life-Cycle Health Management for Industry Internet of Things (IIOT), IWSHM 2019 - Stanford, United States
Duration: 10 Sep 201912 Sep 2019

Publication series

NameStructural Health Monitoring 2019: Enabling Intelligent Life-Cycle Health Management for Industry Internet of Things (IIOT) - Proceedings of the 12th International Workshop on Structural Health Monitoring
Volume2

Conference

Conference12th International Workshop on Structural Health Monitoring: Enabling Intelligent Life-Cycle Health Management for Industry Internet of Things (IIOT), IWSHM 2019
Country/TerritoryUnited States
CityStanford
Period10/09/1912/09/19

ASJC Scopus subject areas

  • Computer Science Applications
  • Health Information Management

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