Zhengwei Technology Industrial Ethernet Switch Solution for Subway Signal Control System
I. Project Overview
The line of the subway generally ranges from several kilometers to several tens of kilometers. There are a total of N stations in the line; a vehicle depot, a parking lot N, and a dispatch control room center. N main transformer substations, N traction substations, and N buck substations are all installed on the line. Signals are automatically controlled by the ATP and ATS systems.
Divided into many subsystems in the subway system, such as: can be applied to the rail transit industry to achieve the environment and equipment monitoring system (EMCS), fire alarm system (FAS), gas fire suppression system (FES), power monitoring system (SCADA) , Automatic Fare Collection (AFC), Dispatch Supervision (DSS) systems, etc. The DSS system is the most important system. The core system of DSS is the railway railway signal chain system. The reliability, safety, stability, and real-time of the system determine the safety of train operation. In terms of technology, the railway signal system has been developed into a computer chain system by two stages: mechanical chaining and electrical chaining (relay chaining). There are many unreliable factors in the computer chain system, so the selected equipment must have high reliability, especially the network system must have fault tolerance and anti-jamming capability. Therefore, the network system design must be able to meet the needs of the signal system.
Metro signal acquisition and chain devices are generally used by a world-renowned company's full set of equipment, equipment, high stability and reliability for the acquisition of track signals, interlocking devices for on-site linkage control. However, the high-reliability front-end signal chaining device must be connected through a network with the same security and reliability to realize the entire system linkage and linkage. In addition, the system needs to collect system-wide equipment signals when performing system-wide scheduling. The network equipment selected for realizing high real-time performance must have high-bandwidth communication performance.
Second, product selection
Zhengwei Technology WISE6800 Industrial Ethernet Switch
Third, the program description and characteristics
WISE6800's FAR-Ring fast redundancy function and forwarding performance of up to 148,800 pps can fully meet the requirements of the stability and security of railway signal systems. Unified network monitoring software system can realize monitoring and real-time alarms for each port of the entire network. Also meet the system design requirements. It can effectively improve the convenience of management of the traffic system, reduce the incidence of errors, and reduce maintenance costs.
1) Supports a fast redundant ring, which can switch faulty lines to backup lines within 300 milliseconds. This feature ensures the reliability of the system's line.
2) Web management, configuration, and real-time monitoring of the status of each port of the network through SNMP unified network management software.
3) The point-to-point transmission distance can be from 0KM to 80KM, which fully meets the requirements of long-distance transmission between sites and improves the transmission distance limitation of the original copper network.
4) The fanless and low-power components of the product are designed to ensure that the life cycle value exceeds 200,000 hours, increasing system stability and life span, and reducing the trouble of fault maintenance.
5) The product can also send fault alarm information to facilitate remote management and maintenance.
Fourth, the network topology