By B. Ning
This particular quantity on complicated teach keep an eye on platforms (ATCS) involves chosen papers from the hugely profitable COMPRAIL convention sequence on railways and different transit structures. complex teach keep watch over platforms are enjoying a tremendous function in bettering the potency and protection of educate operation, appearing as their "brains and nerves." Computer-based ATCS's make railways extra trustworthy and more secure. quite often, those structures encompass 4 components: the significant keep an eye on approach; the station keep watch over platforms and wayside platforms; the on-board keep an eye on platforms; and the verbal exchange community, together with cellular verbal exchange. From the perspective of the full lifecycle, an ATCS comprises layout and improvement; re-design for a different line software; simulation verification and checking out; and safeguard review of the process and subsystems. those ideas are recognized to those that are accustomed to general ATCS comparable to ETCS, CTCS for major line railways and CBTC for transit platforms.
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The overall program aims to increase safety and transport capacity, and improve passenger comfort. The OURAGAN re-signaling program, focusing on driver-based train operation (Paris lines 3, 5, 9, 10 and 12) to which Siemens Transportation Systems already contributes is part of an overall modernization scheme. In addition to improving safety, capacity and passenger comfort, it aims to achieve high level of parts interchangeability in the communications-based train control system to insure its easy maintainability.
Some of the key technologies are common in every subsystem. The others are relatively independent. The vital computer is one of the core parts in CBTC systems. In SCS, BCS and OCS, there is a vital computer. From the point of view of application, the vital computer is different with the different subsystems. However, in terms of safety and reliable requirements, the safety platform of the vital computer in the different subsystems is the same. The vital computer can be designed as a series modes which are suitable for different subsystem in a CBTC system.
Advanced Train Control Systems 41 Traditional track circuits cannot satisfy with the communication requirements of train and wayside in a CBTC. In the last decades, cross-cable and leakage cable or leakage optical fiber can be used in CBTC systems. Today, GSM-R and other radio system begin to be applied in a CBTC system. The reliable and safety mobile communication system become the key technology of a CBTC system. Vital Computer Ⅰ Ⅱ Figure 2: Ⅲ Ⅳ …… On-board control system configuration. The accurate position system and the accurate speed measurement system are also the key technologies of CBTC systems.