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Using Wireless Sensor Networks and Trains as Data Mules to Monitor Slab Track Infrastructures.

Cañete E, Chen J, Díaz M, Llopis L, Reyna A, Rubio B - Sensors (Basel) (2015)

Bottom Line: Recently, slab track systems have arisen as a safer and more sustainable option for high speed railway infrastructures, compared to traditional ballasted tracks.The design of such systems has to deal with a scenario of large areas with inaccessible zones, where neither Internet coverage nor electricity supply is guaranteed.In addition, to ensure communication between the sensing devices and the train, the communication system must take into account parameters such as train speed, antenna coverage, band and frequency.

View Article: PubMed Central - PubMed

Affiliation: Department of Languages and Computer Science, University of Málaga, Boulevar Louis Pasteur 35, Málaga 29071, Spain. ecc@lcc.uma.es.

ABSTRACT
Recently, slab track systems have arisen as a safer and more sustainable option for high speed railway infrastructures, compared to traditional ballasted tracks. Integrating Wireless Sensor Networks within these infrastructures can provide structural health related data that can be used to evaluate their degradation and to not only detect failures but also to predict them. The design of such systems has to deal with a scenario of large areas with inaccessible zones, where neither Internet coverage nor electricity supply is guaranteed. In this paper we propose a monitoring system for slab track systems that measures vibrations and displacements in the track. Collected data is transmitted to passing trains, which are used as data mules to upload the information to a remote control center. On arrival at the station, the data is stored in a database, which is queried by an application in order to detect and predict failures. In this paper, different communication architectures are designed and tested to select the most suitable system meeting such requirements as efficiency, low cost and data accuracy. In addition, to ensure communication between the sensing devices and the train, the communication system must take into account parameters such as train speed, antenna coverage, band and frequency.

No MeSH data available.


Related in: MedlinePlus

ZigBee and 868 MHz radios using groups: Communication architecture.
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sensors-15-15101-f007: ZigBee and 868 MHz radios using groups: Communication architecture.

Mentions: The first of the proposed architectures for the monitoring system uses XBee ZB PRO S2 and 868 modules. Figure 7 shows an overview of this architecture. The nodes deployed in the railway are divided into small monitoring groups. The size of these groups is chosen based on factors such as distance between monitored slab tracks, radio antenna range, interferences. Each node of the monitoring group uses ZigBee to send the information to a single coordinator who manages the group. The coordinator stores this information temporarily until a train passes. As a train is detected, the 868 MHz module transmits the information to the train. ZigBee uses the 2.4 GHz band so that transmissions are faster and more reliable but at the expense of a lower range. On the other hand, the 868 MHz communication has a larger range and does not require an association protocol between nodes, which suits the communication requirements between the train and the sensor nodes.


Using Wireless Sensor Networks and Trains as Data Mules to Monitor Slab Track Infrastructures.

Cañete E, Chen J, Díaz M, Llopis L, Reyna A, Rubio B - Sensors (Basel) (2015)

ZigBee and 868 MHz radios using groups: Communication architecture.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4541823&req=5

sensors-15-15101-f007: ZigBee and 868 MHz radios using groups: Communication architecture.
Mentions: The first of the proposed architectures for the monitoring system uses XBee ZB PRO S2 and 868 modules. Figure 7 shows an overview of this architecture. The nodes deployed in the railway are divided into small monitoring groups. The size of these groups is chosen based on factors such as distance between monitored slab tracks, radio antenna range, interferences. Each node of the monitoring group uses ZigBee to send the information to a single coordinator who manages the group. The coordinator stores this information temporarily until a train passes. As a train is detected, the 868 MHz module transmits the information to the train. ZigBee uses the 2.4 GHz band so that transmissions are faster and more reliable but at the expense of a lower range. On the other hand, the 868 MHz communication has a larger range and does not require an association protocol between nodes, which suits the communication requirements between the train and the sensor nodes.

Bottom Line: Recently, slab track systems have arisen as a safer and more sustainable option for high speed railway infrastructures, compared to traditional ballasted tracks.The design of such systems has to deal with a scenario of large areas with inaccessible zones, where neither Internet coverage nor electricity supply is guaranteed.In addition, to ensure communication between the sensing devices and the train, the communication system must take into account parameters such as train speed, antenna coverage, band and frequency.

View Article: PubMed Central - PubMed

Affiliation: Department of Languages and Computer Science, University of Málaga, Boulevar Louis Pasteur 35, Málaga 29071, Spain. ecc@lcc.uma.es.

ABSTRACT
Recently, slab track systems have arisen as a safer and more sustainable option for high speed railway infrastructures, compared to traditional ballasted tracks. Integrating Wireless Sensor Networks within these infrastructures can provide structural health related data that can be used to evaluate their degradation and to not only detect failures but also to predict them. The design of such systems has to deal with a scenario of large areas with inaccessible zones, where neither Internet coverage nor electricity supply is guaranteed. In this paper we propose a monitoring system for slab track systems that measures vibrations and displacements in the track. Collected data is transmitted to passing trains, which are used as data mules to upload the information to a remote control center. On arrival at the station, the data is stored in a database, which is queried by an application in order to detect and predict failures. In this paper, different communication architectures are designed and tested to select the most suitable system meeting such requirements as efficiency, low cost and data accuracy. In addition, to ensure communication between the sensing devices and the train, the communication system must take into account parameters such as train speed, antenna coverage, band and frequency.

No MeSH data available.


Related in: MedlinePlus