Availability Analysis of Next Generation CBTC Data Communication Systems
首发时间:2017-05-17
Abstract:Communication-based train control (CBTC) systems are automated train control systems using wireless communications. Data communication is extremely important in CBTC systems. Train ground communication system which includes too many interfaces between various subsystems and excessive ground equipment is used as traditional CBTC data communication system. In next generation CBTC systems, train-to-train communication is adopted with the advantages of higher-speed, larger-capacity per unit time and the briefer structure in comparison with traditional CBTC system. Although train-to-train communication based CBTC systems has been implemented in urban rail systems. The system availability has not been studied before. In this paper, deterministic and stochastic Petri nets(DSPN) is used for the CBTC system to characterize its normal operation probability. Several typical data communication scenarios are depicted and simulated with DSPN. The impact of different scenario parameters on CBTC system operation is discussed. The availability of the next generation CBTC system is compared with the traditional CBTC system as well.
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下一代CBTC数据通信系统的可用性分析
摘要:基于通信的列车控制(CBTC)系统是使用无线通信的自动列车控制系统。数据通信在CBTC系统中极其重要。传统的CBTC数据通信系统采用车地通信,其中各子系统和地面设备之间接口繁多。与传统CBTC系统相比,下一代CBTC系统采用车车通信,这种通信机制具有速度更高,容量更大,结构更简单等优点。虽然基于车车通信的CBTC系统已经在城市轨道交通系统中得到应用,但是目前其可用性还没被研究过。本文采用确定性和随机Petri网(DSPN)通过描述和模拟了几种典型的数据通信场景来表征下一代CBTC系统正常运行的概率。同时,本文还针对不同场景参数对CBTC系统运行的影响进行了讨论,并将下一代CBTC系统的可用性与传统的CBTC系统可用性进行了比较。
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No.4732981120018614****
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