Abstract: Based on a description of the typical CBTC system, this paper analyzes the impacts and design scheme of each subsystem of the signaling system from the perspective of vehicle capacity expansion, and provides suggestions for the signaling system design at the initial stage of the project. Considering the actual situation of the project, it determines the vehicle parameters affecting the signaling system design after vehicle upgrading and capacity expansion. Based the analysis of the vehicle parameters, it studies the signal system scheme. It also proposes the design requirements for vehicle dimensions, equipment location, traction and braking characteristics, and interface bus from the perspective of the signaling system. Assessing the acceptable vehicle parameters for the signaling system, it provides a design reference for the vehicle design of the vehicle supplier and the technical scheme of the signaling system.

Key words: signaling system design, vehicle upgrading and capacity expansion, vehicle parameters

摘要： 描述典型CBTC系统，从车辆扩容的角度分析信号系统的各个子系统的影响和设计方案，对项目初期的信号系统设计提出建议；结合项目实际情况，明确车辆升级扩容后会影响信号系统设计的车辆参数，结合车辆参数进行信号系统方案的研究，同时从信号系统的角度提出对车辆尺寸、设备安装位置、牵引制动特性、接口总线等各个设计的需求，评估信号系统可接受的车辆参数，为车辆方的车辆设计及信号系统的技术方案提供设计参考。

关键词: 信号系统设计, 车辆升级扩容, 车辆参数