Moxa's vibration-resistant Ethernet switch is the perfect solution for Railway Transportation Systems
Speed and safety are key requirements for modern railway systems, and to meet these demands, system designers use automation technology to ensure that daily operations are both stable and reliable. Railway systems are made up of many complex sub-systems, including systems for signaling, passenger information, video surveillance, and electric power supplies. The challenge that designers face is that the systems are installed at various locations throughout the train, making it necessary to create a reliable data communication network. Because of the complexity of the system, the train needs an open, reliable, and intelligent communication network that can connect to, and communicate with, all of the sub-systems. An Ethernet-based network is a good choice, since it can provide real-time, centralized control and monitoring.
In order to provide a more comfortable experience to the passengers, many trains now provide multimedia equipment to entertain passengers with TV programs, movies, games, and Internet access. All of these devices can be connected and controlled over the same network by using Ethernet technology. It's important to keep in mind that devices used in trains may be subjected to a variety of environmental influences, including excessive vibration, dust, moisture, and high temperatures. One of the biggest challenges is finding equipment that is rugged enough to resist these undesirable influences.
Real-time railway management and monitoring systems can include an HMI (human-machine interface), traffic controllers, a display device, entertainment programs, IP cameras, IP phones, and Ethernet I/O. A fast and open Ethernet network plays an important role in centralizing the collection of data from all sources, and in monitoring and controlling the equipment. Since trains are subjected to high levels of vibration, the railway system should use rugged Ethernet networking devices to ensure that the communication network does not shut down unexpectedly. In fact, the railway system must operate reliably under different environmental conditions, such as high-temperature sites located near the engine. Moxa's EDS-305-M12 Ethernet switch has the right set of features for operating under the environmental conditions found in trains. In particular, the switch's anti-vibration, IP67 housing, -40 to 75°C operating temperature, and overall rugged design, can withstand dust, humidity, EMI (electromagnetic interference), and extreme temperatures. Unlike the less rugged commercial switches, the EDS-305-M12's waterproof and compact design makes it suitable for installation in exposed sites, or directly on machines in the field, without the need to be housed in a protective container. This means that the EDS-305-M12 Ethernet switch can be integrated easily in Ethernet networks at the device level. In addition, the standardized 4-pin M12 connectors provide a tight fit to prevent the connection from popping loose while the train is moving.
Network System Diagram
Benefits from Moxa
- Tough M12 connectors can withstand the effects of continued vibration.
- Moxa's M12 IP67-rated Ethernet switch guards against dust and water.
- Designed for harsh environments, with -40 to 75°C operating temperature range and EMI protection.
- Moxa's Ethernet switches have received major regulatory approvals, such as UL508, Class 1, Div.2, and DNV, giving users added assurance that the products will operate reliably in harsh environments.
- The compact size of the EDS-305-M12 switches and rugged IP67 housing allows users to save more space, but without the need for an additional protective outer casing.