Survey of Wireless Communications Applications in the Railway Industry

Abstract

Abstract-Advances in information and

State-of-the-Art Review of Railway Track Resilience Monitoring

“…In addition, the inclination data recorded can be used to predict the actual deflections of the track. The track movements over time, particularly where nearby construction work or where the track passes through vulnerable areas such as regions prone to landslides may affect the track settlement [45]. Moreover, inclinometers have been used to measure the tilt of the slab phase to help operators install the slab track in the right position and to periodically monitor the slab behavior in the monitoring phase [86].…”

“…The proposed monitoring systems enable the collection and transmission of data from the site to the control centre [45,46], with a general framework consisting of sensor nodes, base station, and server, as shown in Figure 2. …”

Wireless Communication-based Safety Alarm Equipment for Trackside Worker

“…Such interactive wireless communication links may contribute to reduction of motor-car accidents [9][10][11]. In addition, if more than two motor-cars are operated, we made it possible to alarm that another motor-car is approaching through bidirectional wireless communications even between the on-board equipment of motor-cars [12] [13]. Figure 1 is the one showing an configuration of safety alarm equipment to secure the safety through bidirectional detection between the motor-car and trackside worker proposed in this thesis, and it is the safety equipment making workers evacuate by providing various forms of alarm sounds through recognition of the approaching motor-car by worker's safety equipment if the motor-car approaches within the some distance of front, and on the contrary, inducing to drive carefully by making it possible to check even in the motor-car also if there is any worker existed in the front or not.…”

Promoting the Quality Level of Signaling in Railway Transportation System Taking Advantage from Wireless Sensor Networks Technology

“…Sensor network techniques assist in diagnosing any defect in the railway lines and preventing any probable event. As could be seen in Figure 3, in the discussed plans [1,2,4,[6][7][8][9][10], a base station or sink in the central control department delivers data collected by existing sensors in the route or in the train to the central server for data analysis and issuing necessary commands. Considering the advantages of a mobile sink, including longer network life, lower power consumption, load balancing by moving the sink, ease of data collection, and so forth, the method was proposed based on the moving sink that is optimal for the plan, as indicated in Figure 4.…”

“…Since 1840, semaphore signals technologies were created in the UK, gradually developed, and were replaced by wireless communication technology in the modern era. Since that time, most companies have continuously tried to improve and promote C & S technology [1].…”