A review on existing sensors and devices for inspecting railway infrastructure
This paper presents a review of sensors and inspection devices employed to inspect railway defects and track geometry irregularities. Inspection of rail defects is an important task in railway infrastructure management systems, and data derived from inspections can feed railway degradation predict...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2019
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| Online Access: | http://journalarticle.ukm.my/14293/1/01.pdf http://journalarticle.ukm.my/14293/ http://www.ukm.my/jkukm/volume-311-2019/ |
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| Summary: | This paper presents a review of sensors and inspection devices employed to inspect railway defects and track geometry
irregularities. Inspection of rail defects is an important task in railway infrastructure management systems, and data
derived from inspections can feed railway degradation prediction models. These models are utilised for predicting potential
defects and implementing preventive maintenance activities. In this paper, different sensors for detecting rail defects and
track irregularities are presented, and various inspection devices which utilise these sensors are investigated. In addition,
the classification of the sensors and inspection devices based on their capabilities and specifications is carried out, which
has not been fully addressed in previous studies. Non-Destructive Testing (NDT) sensors, cameras and accelerometers are
among sensors investigated here. Correspondingly, trolleys, Condition Monitoring Systems (CMS), hi-rail vehicles and Track
Recording Vehicles (TRV) are among major inspection devices that their capabilities are studied. Furthermore, the application
of new devices, including smartphones and drones, in railway inspection and their potential capabilities are discussed.
The review of previous and recent approaches shows that CMSs are more cost-effective and accessible than other railway
inspection methods, as they can be carried out on in-service vehicles an unlimited number of times without disruption to
normal train traffic. In addition, recently smartphones as a compact inspection device with a variety of sensors are employed
to measure acceleration data, which can be considered as an indicator of rail track condition. |
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