The Composition of Railway Communication System
Railway special communication system consists of the following subsystems: transmission system, wireless communication system, official business system, scheduling and dedicated telephone communication system, closed-circuit television monitoring system, broadcasting system, ticket information display system, clock distribution system, integrated information network system, centralized monitoring alarm system, communication power supply, the public security system and grounding system.
Railway Network Communication Transmission
Transmission system is the backbone of the special communication system, which is also one of the most important subsystems. As the transmission net of communication system, it must be able to transmit speech signal, image signal etc. It can provide reliable and flexible channel for other communication subsystem and the signal, SCADA, FAS, EMCS, AFC, main control system and railway traffic information management system. Therefore we need to set up a multi-functional, multi-purpose, large capacity and centralized maintenance, centralized management of integrated services digital transmission system in order to ensure the normal operation of railway transportation information needed for accurate delivery.
In the special system, network data transmission subsystem consists of wireless communication system, CCTV system, the station ticket information display system and network information system.
Each station, waiting room, counters, rest area network communication transmission equipment consists of fiber optical, wireless, network cables etc.
The application of optical fiber as the backbone network transmission channel, in practice, it can reflect its advantages of big bandwidth, small attenuation, long transmission distance. Wireless transmission reflects its advantages of simple networking, without cable, flexible movement etc. And network cable can reflect its advantages of simple networking, signal stability, cost saving.
In the process of setting network cable, some problems may cause a certain obstacles to projects progress. For example, the network transmission distance is more than 100 meters. The analog devices are replaced for network devices. It need to change to the data point location temporarily not allowing to increase cable and so on. In this situation, you can use our industrial Ethernet/IP Extender (Broadband Carrier Technologies) over coaxial cables or any two core copper cable to solve the above problems.
The Features of Industrial Ethernet/IP Extender
Ourten Industrial Ethernet/IP Extender can realize two-way data communication network over Coax or Two-wire. The features are the below:
(1) Real-time rate reach 94Mbps, suitable for 100Mbps network devices
(2) Coaxial cable or two-wire for choose
(3) Long transmission distance, transmission rate can reach 60Mbps when
the distance is 1000m
(4) Support the 12V ~ 56V power transmission
(5) Industry level are suitable for the harsher environment
The Application of Railway Network Communication
We know each site network points are relatively dense and transmission distance is far. It makes network equipment renovation and extension facing many difficulties. For example, adding CCTV cameras, WiFi, extension, network ticket machine, network information display and other network equipments changes, they will many difficulties to network cabling.
Make full use of the reserved cables, such as twisted pair, two core, voice line, coaxial line, power lines in the station, you can add our Industrial Ethernet/IP Extender to realize the network extension and seamless upgrade. It can bring great convenience to the station. Transmission distance can reach 1000 meters. It can cooperate with the main optical fiber network to build stable high bandwidth network fast within 1000meters. The following is the connection diagram.
The Advantages Comparison of Transmission Solutions:
Transmission Solution | Set up Roadblocks | Difficulty | Projects Time | Labor Cost | Remarks |
New Wiring | Yes | Difficult | Long | High | Cause inconvenience to passengers, big influences |
No Wiring | No | Easy | Short | Low | Small influences, fast speed |
The Prospect of Broadband Carrier Technology
At present, the technology of the broadband carrier is very mature. Its chip solution tends to be high bandwidth, no maintenance required, long distance, strong anti-interference ability, which completely can be used in all kinds of network communication system. With the strengthening of the network construction and the rapid development of Internet of things, copper cables long-distance transmission will be inevitable. Especially in the railway transportation system, it has the more and higher requirements on intelligent network.
About the traditional optical fiber, wireless and network cables, it is difficult to realize seamless connection. Considering the particularity of railway transport system, we add the broadband carrier transmission devices into the system to improve railway traffic construction speed and quality of communication undoubtedly.
