Rail transit solutions

1. System background

        During the operation of railway vehicles in various sections, it is necessary and necessary for each railway bureau to conduct monitoring and statistics on the vehicles running through its jurisdiction.Applied to this ipc, the traditional use of the PCI bus goldfinger card form.As the equipment is close to the track, the passing of rail vehicles will cause vibration to it, the shortcomings of weak connection mode of goldfinger will be exposed obviously, which is prone to unstable system operation, incomplete signal collection, communication errors and other problems, and once the equipment has problems for maintenance, it must be stopped.In the face of the railway transportation task is increasingly heavy, the number of vehicles gradually increased, the use of CPCI products to replace the original IPC IPC is a major trend.

2. System performance

        CPCI standard is a new open industrial computer standard, it has the characteristics of openness, good heat dissipation, high stability, high reliability and heat pluggable and so on, it is suitable for industrial site, real-time data acquisition, instrument measurement, common features are modular, strong structure design.

Plug and pull the board card from the front/back of the case, the board card is fixed by the connector and guide rail, the front panel also has the fastening screw, the board card is installed vertically, improves the heat dissipation condition, and has better impact resistance and vibration resistance characteristics than the PCI goldfinger connection.The fully airtight feature of the pinhole connector greatly improves the corrosion resistance of the board card and increases the load capacity.A more attractive feature is the hot plug, which is a technique for unplugging or inserting functional templates without disrupting the normal operation of the operating system under the condition of continuous electricity, which greatly improves the maintainability of the equipment.

3. System advantages

（1）. High-tech

        Advanced computer network technology is adopted to realize the automatic tracking management of trains and vehicles to improve transportation efficiency, and better communication with railway users to improve transportation services.Advanced information transmission technology is adopted to replace the traditional track circuit, which can meet the needs of efficient and large capacity information transmission between the dispatching center and the train group.Advanced train positioning and speed measurement technology is adopted to determine the exact position and status of the train.

（2）. Intelligence

       That is, from traditional control and management to knowledge engineering, it can simulate human behavior to implement the management of trains and train groups.The former is an intelligent train, which realizes the assistance and autonomous driving of the train through the on-board microcomputer, while the latter completes the functions of driving planning, operation management and information service through the intelligent workstation of the dispatching center.

（3）. Comprehensive integration

       In recent years, with the progress of science and technology and the development of computer integration technology, it is possible to integrate multiple professional subsystems through a unified platform.Large-scale construction period, in the current domestic urban rail transit through the unification of the comprehensive integrated system to provide the soft hard platform, will allow the personnel and the station attendant care about monitoring information together in a powerful integrated software development platform support, the end user through a graphical man-machine interface, convenient and effective monitoring management operation of the whole line phase sub-systems.And realize the information sharing and coordination interaction between the systems.

4．the system block diagram

5. solutions

（1）. Comprehensive monitoring system scheme

       It is a large computer integrated system based on modern computer technology, network technology, automation technology and information technology.The system integrates and interconnects a number of subway automation subsystems, mainly integrating environment and equipment monitoring system, power monitoring system, automatic fire alarm system, and other subsystems.Under the support of the integration platform, the unified monitoring of various specialties is carried out to realize the information sharing of each specialty system and the linkage control function between the systems, improve the operation efficiency, and provide the information foundation for the realization of modern operation and management of urban rail transit.

（2）. Integrated security system scheme

        It is generally composed of security network subsystem, security integrated management subsystem, integrated TV monitoring subsystem, access control subsystem, electronic fence system and station emergency warning subsystem.To realize the functions of access management, registration, real-time video monitoring and intrusion detection in key areas such as station, depot, parking lot, main substation, management room, entrance, ticket office, bank, etc., so as to effectively guarantee the safety of subway operation.The integrated security system and the integrated monitoring system are interconnected at the central and station levels, receiving the mode control information of the integrated monitoring system, and the integrated monitoring system coordinates the linkage between the integrated security system, the fire alarm system, the equipment environment monitoring system and so on.

（3）. Passenger information system solution

         Under normal circumstances, it can provide real-time multimedia information such as train time information, government announcement, travel reference, stock information, media information and advertisement.Provide dynamic emergency evacuation instructions in case of fire and obstruction, terrorist attack, etc.We will fully improve the overall service level and quality of subway or light rail operations.

（4）. Automatic ticket collection system scheme

         AFC system is a ticket management mode widely used in the world metro/light rail.The automatic ticket collection system (AFC) operates in a closed mode and charges for counting and timing.With contactless IC card as the ticket medium, through the highly safe, reliable, confidential and good performance of the automatic ticket sales and collection computer network system, the subway/light rail operation of ticketing, ticket collection, billing, charging, statistics and other ticketing operations of the whole process, multi-task automation management.

（5）. Communication system scheme

        Generally by the transmission network, the official telephone, the special telephone, the broadcast, the wireless communication, the clock, the power supply and the grounding and so on subsystem composition, constitutes transmits the voice, the data and the image and so on each kind of information comprehensive service communication network.Under normal circumstances, the communication system transmits voice, data, image and other information for operation management, traffic scheduling, equipment monitoring, fire alarm and other systems. In abnormal and emergency situations, the communication system also ACTS as a means of communication for emergency rescue and disaster relief.

（6）. Signal system programme

        It is the key system equipment to ensure the safety of train operation, realize the modernization of train operation and train operation, and improve the transportation efficiency.The urban rail transit signal system is usually composed of automatic train control system (ATC), which consists of four subsystems: ATS, ATP, ATO and CI.The subsystem forms a closed-loop system through the information exchange network to realize the combination of ground control and on-board control, as well as on-the-spot control and central control. It forms an automatic train control system based on safety equipment and integrating the functions of train operation command, operation adjustment and automation of train operation.

6.Application scope

Urban rail transit includes metro, light rail, tram, maglev train and other types.The intelligent systems of urban rail transit include integrated monitoring system, passenger information system, integrated security system, communication system, automatic ticket collection system and signal system.