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What is CBTC? Communication Based Train Control Tracking and Manipulating Trains by Continuous Duplex Communications Communication System: Wireless (WIFI, GSM-R, LTE) Induction Loop
CBTC vs. ETCS/CTCS CBTCETCS L2/CTCS L3 Block SystemMoving BlockQuasi-Moving Block HeadwayLess than 1.5min3min Operational SpeedLess than 100km/hUp to 350km/h Cost8 million/km1.5 million/km The Next Generation Signaling System NG-CBTC Carborne Centralized CBTC ETCS L3/CTCS L4
Architecture of CBTC System ATS CI ZC LEU WS Balise ATP ATO ATP ATO Wayside Centralized CBTC System HMI
Architecture of CBTC System ATS OC WS ATP ATO ATP ATO Carborne Controller Centralized CBTC System HMI
CC vs. WS Centralized CBTC System Wayside Centralized CBTC System Multi levels backup mode, fault isolation Less data in CC, more interoperability Mass wayside equipment, cost is higher
CC vs. WS Centralized CBTC System Carborne Centralized CBTC System Simple in structure and dataflow Low transmission delay Low Cost Easily re-signaling Mass data in CC, a hinder of interoperability No backup mode with ATP
Constituent of CBTC System Type 1: High Safety and Real-time CI, ZC, ATP/ATO, LEU,DSU,OC Type 2: Medium Safety and Real-time ATS, ISCS Type 3: Non-safety and Real-time HMI (ATS, CI, MMI, ISCS)
Constituent of CBTC System Type 1: High Safety and Real-time Embedded Safety Platform (2x2002, 3002, hot-standby) Embedded Distributed Real-time Database Type 2: Medium Safety and Real-time COTS based Safety Platform (hot-standby, private cloud) Distributed Real-time Database Universal Configuration Software (SCADA) Type 3: Non-safety and Real-time Universal HMI Library
Project Design and Implement Design ActivityBasic Technology Signal Scheme PlanUniversal HMI Library Uniform Data Format Line Capacity AnalysisUniform Data Format Interlock Table DesignUniform Data Format Time Table SimulationUniform Data Format Implement ActivityBasic Technology Data PreparationUniversal HMI Library Uniform Data Format
Simulation Testing Enclosed Code Based Simulation Platform Virtualization Software Defined Network (SDN)
Integration Project Management Project Management Information System Project Modeling Configuration Management System Project Documents Specification->Sketch Design->Detailed Design->Code Integration Test Case->Unit Test Case Branch Management / Version Graph
Integration Project Management Test Management System Bug Tracing Continuous Release Automatic Compiling
Inter-operability Wayside Centralized CBTC System CC with no line topology data Carborne Control Centralized CBTC System Real-time DB based CC CBTC/CTCS Inter-operation 2 in 1