【作者】 武少峰；

【导师】 何春明；

【作者基本信息】 北京交通大学 ， 系统工程， 2006， 硕士

【摘要】 中国经济的快速发展对铁路提出了更高的要求。研究国外的铁路安全标准和相关的安全评估、认证体系，并结合中国铁路通信信号发展的实际情况，建立中国铁路通信信号系统的安全评估和认证体系势在必行。本文对CENELEC制定的欧洲系列标准EN—50126、EN—50128、EN—50129、EN-50159进行了研究，并对它们在基于通信系统的铁路信号安全信息传输上的应用作出分析。论文首先论述了建立基于通信系统的铁路信号安全信息传输的必要性，指出TBTC系统必将为CBTC系统所取代，通信信号一体化是世界各国铁路发展的一个必然趋势，指出应该设立中国铁路相关的安全标准；接着研究了欧洲铁路安全标准及原理；构建出适合中国铁路并基于通信系统的铁路信号安全信息传输生命周期，制定了生命周期14个阶段内应完成的任务；指出不同安全完整性级别对故障概率的限制值，论述了如何实现铁路信号传输系统的故障—安全，提出封闭通信系统安全编码长度的计算方法，分析了开放通信系统的威胁和安全性设计原则；阐述了信息传输编码的理论，验证欧洲应答器传输协议的安全性并对其安全传输的概率进行估算，证明其满足欧洲安全标准SIL4的要求，指出对该协议的安全验证和评估能对基于通信系统的铁路信号安全信息传输起到指导与参考的作用；最后得出结论：基于通信系统的铁路信号安全信息传输是可行的。更多还原

【Abstract】 With the rapid development of Chinese economy, higher requirements are purposed to railway. Consequently, by researching overseas railway safety standards and the relevant safety evaluation and safety validation systems and combining with the practice of development of Chinese railway communication and signalling, the safety evaluation and validation system of Chinese railway communication and signalling system must be established availably and in time. In this paper, the author researches the European serials standards developed by CENELEC, such as EN—50126, EN—50128, EN —50129 and EN —50159, and for the application of these standards in safety information transmission of railway signalling based on the communication system, some theories are also analyzed.Firstly, the paper discusses the necessity of constructing the railway signalling safety information transmission based on the communication system, and points out the TBTC system must be replaced by the CBTC system finally, and the integration of communication and signalling is the inevitable trend for railway development of every country. The necessity of establishing Chinese safety related railway standard is pointed. Secondly, the author studies the European railway safety standards and principles. The railway signalling safety information transmission lifecycle is constructed which is adapted to Chinese railway and based on the communication system, the tasks should be accomplished in 14 stages within this lifecycle are made. Restricted value of fault probability under variable safety integrity levels is indicated. How to realize fail—safe of railway signalling transmission system is discussed. The author puts forward a calculation method of safety code length in closed transmission system. The threats of open transmission system and safety design rules are analyzed. The theory of information transmission codes is introduced. The paper verifies the safety of European balise transmission protocol and estimates its safety transmission probability. The author testifies that this protocol can fulfill the requirement belong to SIL4 established in European standards and indicates that safety verification and evaluation to this protocol can guide and consult the transmission of railway signalling safety information based on the communication system. At last, the author draws the conclusion that the railway signalling safety information transmission based on the communication systems is feasible.更多还原