1、 - I - 摘 要 随着列车的提速与铁路事业的不断发展，为满足机车在站内能通过轨道接收到移频 机车信号信息的要求，站内轨道电路必须实施电码化。站内电码化是一种实现在车站内 由相应轨道电路转发或叠加机车信号信息来确保铁路行车安全的重要技术。本次 17 号 站的设计选用了 ZPW-2000A 型自动闭塞制式并实施预叠加。 ZPW-2000A 型可以有效的 解决调谐区的断轨检查问题，缩短了调谐区分路死区长度并实现了对调谐单元的断线故 障检查，提高了轨道电路的传输长度，使轨道电路更加的稳定。在运行过程中列车必须 要连续不断的收到地面发送的机车信号信息，故采用预叠加电码化技术，以减少机车掉 码现象。
2、17 号站逐段预叠加 ZPW-2000A（上行）电码化工程设计共包括 10 张图纸：17 号 站信号平面布置图、17 号站上行正线正向行接车进路逐段预叠加电码化电路图、17 号 站上行正线正向发车进路逐段预叠加电码化电路图、17 号站股道(IIG、4G)电码化电路 图、17 号站站内移频柜设备布置图、17 号站站内综合架设备布置图、17 号站站内组合 架设备布置图、17 号站站内 N+1 冗余电路图和上行自动闭塞结合电路图。对 10 张图纸 进行了图纸说明，以 17 号站上行发车进路逐段预叠加电码化电路图为例，上行发车进 路电码化电路图主要介绍了 17 号站上行发车进路的 CJ 的励磁电路和自
3、闭电路， 低频编 码电路，XFMJ 的励磁电路和自闭电路。 17 号站逐段预叠加 ZPW-2000A（上行）电码化工程设计根据铁路信号施工设计与 规范进行设计，满足铁路信号设计规范(TB10007-2006)和机车信号信息定义及分 配(TB/T3060-2002)的要求。 关键词：关键词：ZPWZPW- -2000A2000A；逐段预叠加；电码化；逐段预叠加；电码化 - II - Abstract As the train speed and the continuous development of the railway undertakings to meet locomotive at
4、 the station via rail locomotives frequency shift signal received requests for information, the station track circuit must be implemented telegraph code. Station telegraph code is a realization in the station by the corresponding forward or overlay track circuit locomotive railway traffic signal inf
5、ormation to ensure the safety of important technology. The design of the No.17 station selected ZPW-2000A Automatic blocking system and implement pre-stack. ZPW-2000A type can effectively solve tuning off the track inspection zone, reducing the dead zone length tuning distinguish path and to realize
6、 the disconnection fault checking of the tuner unit, to improve the transmission length of the track circuit, the track circuit more stable. During operation, the train must be received continuous ground locomotive signal information transmitted, so the use of pre-stack electrical code technology to reduce locomotive off the yard phenomenon. The engineering design of the section-by-section pre-superposition coding by ZPW-2000A on No.17 station (up traffic) comprises a total of 10 drawings
