摘要
自动闭塞系统中,轨道电路传输的安全性是“机车信号做为主体信号”的基础保证条件。本文作者重点阐述了 ZPW-2000系统轨道电路传输安全性方面几项技术难题的解决方案。另外,作者也根据 ZPW-2000系统轨道电路计算机仿真,对传输通道参数优化的主要工作及技术经济效果进行了说明。通过各种移频自动闭塞制式在传输长度、安全性、可靠性、抗干扰水平等方面的技术对比表明:ZPW-2000无绝缘移频自动闭塞系统已成为我国目前最先进的无绝缘自动闭塞制式。它将在我国铁路“机车信号做为主体信号”的技术发展政策中发挥作用。
Transmission security of the track circuit is a basic guarantee requirement when cab signal is used as main signal in automatic blocking system.The author emphasized the solutions for several technical problems at transmission security of ZPW-2000 track circuit system.Besides, according to computer emulation technology of ZPW-2000 track circuit,the author gives an explanation of the main tasks of optimizing parameters for transmission channels and technical economic effect.It is indicated by comparing different types of automatic block with frequency- shift systems in the respects of transmission distance,security,reliability,level of interference protection,etc.that ZPW-2000 automatic block with jointless frequency-shift system has become the most advanced jointless automatic block system at present in our country. It will play a role in technical development policy of“cab signal as main signal”in the railways of our country.
