Intelligent Rail Transit

      Urban rail transit includes subways, light rails, trams, maglev trains and other types. The urban rail transit intelligent system includes comprehensive monitoring system, passenger information system, comprehensive security system, communication system, automatic fare collection system and signal system.

1. Integrated monitoring system
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 professional subsystems, mainly integrating the environment and equipment monitoring system, power monitoring system, automatic fire alarm system, and interconnecting with other subsystems. With the support of the integrated platform, it conducts unified monitoring of each specialty, realizes information sharing of various professional systems and linkage control functions between systems, improves operational efficiency, and provides an informatization foundation for realizing modern operation and management of urban rail transit. the

2. Comprehensive security system
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 alarm subsystem, etc. Realize the functions of access management, registration, real-time video monitoring and intrusion detection for key areas such as stations, depots, parking lots, main substation equipment and management rooms, entrances and exits, ticket offices, banks, etc., effectively ensuring the safety of subway operations . The integrated security system and the integrated monitoring system are interconnected at the central level and the station level, accepting the mode control information of the integrated monitoring system, and the integrated monitoring system coordinates the linkage between the integrated security system, fire alarm system, equipment environment monitoring and other systems. the

3. Passenger Information System
Under normal circumstances, it can provide real-time multimedia information such as train time information, announcements, travel references, stock information, media information, and advertisements; it can provide dynamic emergency evacuation instructions in the event of fire, blockage, and terrorist attacks. Fully improve the overall service level and quality of subway or light rail operations. the

4. Automatic fare collection system
The AFC system for short is a ticketing management mode widely used in subways/light rails around the world. The automatic fare collection system (AFC system) adopts a fully enclosed operation mode, and a charging mode of metering and timing. With the non-contact IC card as the ticket medium, through the computer network system of automatic fare collection with high security, reliability and good confidentiality, complete the ticket sales, ticket inspection, billing, charging, statistics and other ticketing operations in the subway/light rail operation. Process, multi-task automation management. the

5. Communication system
It is generally composed of subsystems such as transmission network, business telephone, special telephone, broadcasting, wireless communication, clock, power supply and grounding, and constitutes an integrated business communication network that transmits various information such as voice, data and images. Under normal circumstances, the communication system transmits information such as voice, data, and images for operations management, traffic dispatching, equipment monitoring, and fire alarm systems. In abnormal and emergency situations, the communication system is also used as a means of communication for emergency rescue. the

6. Signal system
It is the key system equipment to ensure the safety of train operation, realize the modernization of traffic command and train operation, and improve the transportation efficiency. The urban rail transit signal system is usually composed of the automatic train control system (ATC for short). The ATC system includes four subsystems: automatic train monitoring system (ATS), automatic train protection subsystem (ATP), automatic train operation system (ATO), computer Chain System (CI). The subsystem forms a closed-loop system through the information exchange network, realizes the combination of ground control and on-board control, on-site control and central control, and forms a system based on safety equipment that integrates functions such as traffic command, operation adjustment and train driving automation. Automatic train control system.

Advantages of urban rail intelligent system:

1. High-tech aspects
The advanced computer network technology is used to realize the automatic tracking and management of trains and vehicles to improve transportation efficiency, and better communicate with railway users to improve transportation services. The advanced information transmission technology is used to replace the traditional track circuit, which can meet the needs of high-efficiency and large-capacity information transmission between the dispatch center and the train group. Adopting advanced train positioning and speed measurement technology, it can determine the precise position and state of the train. the

2. Intelligent aspect
That is, the transformation from the traditional control and management type to the knowledge engineering type can simulate human behavior to implement the management of trains and train groups. The former is an intelligent train, which realizes train assistance and automatic driving through the on-board microcomputer, and the latter completes functions such as driving plan, operation management and information service through the intelligent workstation of the dispatch center. the

3. In terms of comprehensive integration
In recent years, with the advancement of science and technology and the development of computer integration technology, the idea of integrating multiple professional subsystems through a unified platform has become possible. In the current period of large-scale construction of urban rail transit in China, through the unified software and hardware platform provided by the comprehensive integrated system, the monitoring information concerned by the central dispatchers and station on-duty personnel will be brought together under the support of a powerful integrated software development platform , the end user can conveniently and effectively monitor and manage the operation of the entire line and professional subsystems through the graphical man-machine interface. And realize the information sharing and coordination interaction among the systems.