介绍自主创新的基于通信的列车控制(com-munication based train control,CBTC)系统。历经10年的核心技术攻关、现场试验、中试与示范工程,首次建立覆盖安全系统全生命周期的移动闭塞系统设计理论及技术体系,提出列车运行安全控制的摸...介绍自主创新的基于通信的列车控制(com-munication based train control,CBTC)系统。历经10年的核心技术攻关、现场试验、中试与示范工程,首次建立覆盖安全系统全生命周期的移动闭塞系统设计理论及技术体系,提出列车运行安全控制的摸型和算法;采用高密度列车追踪防护技术,解决复杂线路条件下、高速度、高密度列车最小间隔达到90s的追踪控制问题,全天候地保证列车安全运行;采用最佳化列车自动驾驶技术,解决节能优化驾驶、精确停车等问题;提出兼容无线自由波、波导管和漏缆等多种媒介的高可信、大容量车地双向传输技术,实现复杂环境下车地安全信息可信传输;采用基于最小系统及测试案例的仿真、测试、验证技术,实现原理验证、功能测试、系统集成测试、现场故障数据的回放、分析与处理、后期系统的升级与维护。展开更多
车车通信CBTC(communication based train control)系统是下一代信号系统的发展方向之一,其结构简单、性能高、建设维护成本低、应用前景广阔。对象控制器是车车通信CBTC系统的核心子系统,负责道岔、屏蔽门等整个地面设备的管理。文章...车车通信CBTC(communication based train control)系统是下一代信号系统的发展方向之一,其结构简单、性能高、建设维护成本低、应用前景广阔。对象控制器是车车通信CBTC系统的核心子系统,负责道岔、屏蔽门等整个地面设备的管理。文章分析了对象控制器的功能需求,从系统架构、功能实现的角度给出了对象控制器的一种设计方案。该方案控制逻辑清晰、系统结构简单灵活,并充分考虑了控制逻辑的安全性和运营效率。展开更多
Communication based train control (CBTC) system is based on mobile communication and overcomes fixed blocks in order to increase track utilization and train safety. The data communication system (DCS) between trains a...Communication based train control (CBTC) system is based on mobile communication and overcomes fixed blocks in order to increase track utilization and train safety. The data communication system (DCS) between trains and wayside equipment is a crucial factor for the safe and efficient operation of CBTC system. The dependability under various transmission conditions needs to be modeled and evaluated. In this paper,a stochastic reward net (SRN) model for DCS based IEEE 802.11 standard was developed,which captures all relevant failure and failure recovery behavior system aspects in a concise way. We compared the reliability,availability for DCS with and without access point (AP) and antenna redundant configuration. We also quantitatively evaluated and compared the frame loss probability for three DCS configurations with different train velocities and train numbers in one radio cell. Fixed-point iteration was adopted to simplify the analysis. Numerical results showed the significant improvement of the reliability,availability and the frame loss probability index for the full redundant configuration.展开更多
从车地无线通信、车载控制模型、轨旁设备应用等方面有针对性地研究了设计速度在160~200 km/h下基于通信的列车运行控制(CBTC,Communication Based Train Control)系统的高速适应性问题,提出了速度提升后CBTC系统相对应的改进方案。从...从车地无线通信、车载控制模型、轨旁设备应用等方面有针对性地研究了设计速度在160~200 km/h下基于通信的列车运行控制(CBTC,Communication Based Train Control)系统的高速适应性问题,提出了速度提升后CBTC系统相对应的改进方案。从理论上分析,传统CBTC系统在完成适配性改进后,能够满足此速度等级下安全运行的要求。展开更多
文摘介绍自主创新的基于通信的列车控制(com-munication based train control,CBTC)系统。历经10年的核心技术攻关、现场试验、中试与示范工程,首次建立覆盖安全系统全生命周期的移动闭塞系统设计理论及技术体系,提出列车运行安全控制的摸型和算法;采用高密度列车追踪防护技术,解决复杂线路条件下、高速度、高密度列车最小间隔达到90s的追踪控制问题,全天候地保证列车安全运行;采用最佳化列车自动驾驶技术,解决节能优化驾驶、精确停车等问题;提出兼容无线自由波、波导管和漏缆等多种媒介的高可信、大容量车地双向传输技术,实现复杂环境下车地安全信息可信传输;采用基于最小系统及测试案例的仿真、测试、验证技术,实现原理验证、功能测试、系统集成测试、现场故障数据的回放、分析与处理、后期系统的升级与维护。
文摘车车通信CBTC(communication based train control)系统是下一代信号系统的发展方向之一,其结构简单、性能高、建设维护成本低、应用前景广阔。对象控制器是车车通信CBTC系统的核心子系统,负责道岔、屏蔽门等整个地面设备的管理。文章分析了对象控制器的功能需求,从系统架构、功能实现的角度给出了对象控制器的一种设计方案。该方案控制逻辑清晰、系统结构简单灵活,并充分考虑了控制逻辑的安全性和运营效率。
基金Supported by the National Natural Science Foundation of China (Grant Nos. 60634010, 60736047) the Doctoral Program Foundation of Institutions of High Education of China (Grant No. 20070004005)
文摘Communication based train control (CBTC) system is based on mobile communication and overcomes fixed blocks in order to increase track utilization and train safety. The data communication system (DCS) between trains and wayside equipment is a crucial factor for the safe and efficient operation of CBTC system. The dependability under various transmission conditions needs to be modeled and evaluated. In this paper,a stochastic reward net (SRN) model for DCS based IEEE 802.11 standard was developed,which captures all relevant failure and failure recovery behavior system aspects in a concise way. We compared the reliability,availability for DCS with and without access point (AP) and antenna redundant configuration. We also quantitatively evaluated and compared the frame loss probability for three DCS configurations with different train velocities and train numbers in one radio cell. Fixed-point iteration was adopted to simplify the analysis. Numerical results showed the significant improvement of the reliability,availability and the frame loss probability index for the full redundant configuration.
文摘从车地无线通信、车载控制模型、轨旁设备应用等方面有针对性地研究了设计速度在160~200 km/h下基于通信的列车运行控制(CBTC,Communication Based Train Control)系统的高速适应性问题,提出了速度提升后CBTC系统相对应的改进方案。从理论上分析,传统CBTC系统在完成适配性改进后,能够满足此速度等级下安全运行的要求。
