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Industrial Ethernet Book 99

Wireless improves railway experience and operations Not every Ethernet-based network can be planned, implemented and operated in the same way, and an inappropriate approach to achieving complete network convergence can be very costly for customers. But now, special network designs geared towards applications requirements are finding their way into industry. A RENAISSANCE OF TRAIN TRAVEL experienced around the world, is being fueled by the increasing constraints of urban density, environmental sensitivity and the diminishing availability of natural resources. For railway operators, capitalizing on this opportunity requires a commitment to improving both customer service and operational performance. The good news for these enterprises is that advances in communications technology offer an efficient and cost-effective way to achieve both goals, especially through the innovations made possible by Ethernet technology. The highly connected passenger Consumers expect they will be able to connect to one another, information and devices without limits anywhere, anytime. For train travelers, this level of internet access has not always been available, in large part due to the ways in which mobile network coverage plans were developed, prioritizing the needs of road users and urban areas. That’s changing as train operators recognize the competitive advantage that can be gained with internet access via Wi-Fi and on-board wide area network (WAN) access points. Need for continuous data flow Beyond the need to offer customers the internet access they demand, there’s pressure for state-of-the-art communications to improve operational performance, including: • Better fuel efficiency • Increased reliability • Shorter dwell times at platforms • Reduced headway between trains • Improved security Meeting these needs requires better diagnostic and control systems which, in turn, makes it necessary to monitor and collect data on a wide range of on-board systems. Adding to the challenge is the need for information to flow adn integrate between multiple on-board systems. Examples include: • On-board location systems that can communicate to door systems where the train is, so the last doors don’t open when the platform is too short to accommodate the length of the train • Passenger information systems that can accept door closure information from the on-board location systems, so passengers looking to exit at the station know to move to a carriage where the doors will open • Diagnostic systems that can report maintenance needs in advance, so equipment can be organized and ready when the train arrives • Reservations and ticketing systems information • Communication-Based Train Control systems that enable remote control of the train On-board connectivity The increasingly sophisticated communications requirements of railway enterprises are causing a shift in the design of the on-board network. Design is moving from multiple individual systems supporting specific data networks to a single integrated network that connects the train to both internal and external systems. Ethernet technology and sophisticated configurations of the networks are at the heart Technology 18 industrial ethernet book 4.2017 SOURCE: BELDEN internet access via Wi-Fi and on-board wide area network (WAN) access points are making headway on trains. IEC 61375 standards include communications protocols that are designed to ensure that the ETBNs work together, and provide intelligence to the train network that can improve the operation of the train. SOURCE: BELDEN


Industrial Ethernet Book 99
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