Journal
SENSORS
Volume 17, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/s17061457
Keywords
IoT; IIoT; internet of trains; railway safety; rail planning and scheduling; predictive maintenance; WSN; railway enhanced services; freight transportation; cyber security
Funding
- Xunta de Galicia [ED431C 2016-045, ED341D R2016/012, ED431G/01]
- Agencia Estatal de Investigacion of Spain [TEC2013-47141-C4-1-R, TEC2015-69648-REDC, TEC2016-75067-C4-1-R]
- ERDF funds of the EU (AEI/FEDER, UE)
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Nowadays, the railway industry is in a position where it is able to exploit the opportunities created by the IIoT (Industrial Internet of Things) and enabling communication technologies under the paradigm of Internet of Trains. This review details the evolution of communication technologies since the deployment of GSM-R, describing the main alternatives and how railway requirements, specifications and recommendations have evolved over time. The advantages of the latest generation of broadband communication systems (e.g., LTE, 5G, IEEE 802.11ad) and the emergence of Wireless Sensor Networks (WSNs) for the railway environment are also explained together with the strategic roadmap to ensure a smooth migration from GSM-R. Furthermore, this survey focuses on providing a holistic approach, identifying scenarios and architectures where railways could leverage better commercial IIoT capabilities. After reviewing the main industrial developments, short and medium-term IIoT-enabled services for smart railways are evaluated. Then, it is analyzed the latest research on predictive maintenance, smart infrastructure, advanced monitoring of assets, video surveillance systems, railway operations, Passenger and Freight Information Systems (PIS/FIS), train control systems, safety assurance, signaling systems, cyber security and energy efficiency. Overall, it can be stated that the aim of this article is to provide a detailed examination of the state-of-the-art of different technologies and services that will revolutionize the railway industry and will allow for confronting today challenges.
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