摘要：ZPW-2000A型无绝缘移频由动闭塞系统是在法国UM71无绝缘轨道的基础上，结合国情使其国产化，提高它的系统安全性、系统传输的性能以及系统的可靠性。相对于UM71无绝缘轨道电路，ZPW-2000A无绝缘移频由动闭塞系统在轨道电路上传输的可靠性、传输长度、可维修性还有通过结合国情提高的技术性能价格比上都有了显著的提高。

本次设计对ZPW-2000A无绝缘移频由动闭塞实验系统结构设备组成，系统测试和轨道电路的调整以及由动闭塞系统在站间站内的应用都做出了相应的分析，重点设计了ZPW-2000A无绝缘移频实验系统的内部电路结构以及室内机柜布置设计等，包括发送器，接收器，衰耗盘，防雷模拟网络盘，电气绝缘节，匹配变压器，补偿电容等，阐述其结构，作用原理及程序设计。

关键词：ZPW-2000A；移频；由动闭塞；轨道电路；

Abstract： The ZPW-2000A type uninsulated frequency shift automatic block is the technology redevelopment of improving system security, system transmission performance and system reliability on the basis of the introduction and localization of the French UM71 uninsulated track circuit technology. Compared with UM71, ZPW-2000A type uninsulated

frequency shift automatic block has greatly improved in rail circuit transmission security, transmission length, system reliability, maintainability, combined with national conditions to improve technical performance and price ratio, and reduce the cost of engineering.

The design of ZPW-2000A type without insulation track circuit system structure, system of the circuit principle, system test track circuit and the adjustment and automatic block system in standing between the application within the station has made a detailed description of the key design, ZPW - 2000 the system of internal circuit structure, including electrical insulation, transmitter and receiver, the attenuation, lightning, matching simulating network transformer, compensation capacitor, etc, this paper respectively their interior design of each module circuit structure, expounds its function and principle.

Key Words：ZPW-2000A ; frequency shift circuit ; automatic block ; track circuit

目录

1绪论..1

2ZPW-2000A型无绝缘移频由动闭塞系统的概况.2

2.2ZPW-2000A型无绝缘轨道电路系统构成.2

2.2.1室外部分.3

2.2.2室内部分.3

3系统组成及原理5

3.1发送器6

3.1.1发送器的作用.6

3.1.2发送器的原理框图及电路原理简要说明6

3.1.3微处理器、可编程逻辑器件及作用.7

3.1.4低频和载频编码条件的读取.7

3.1.5移频信号产生.8

3.2接收器8

3.2.1接收器作用8

3.2.2接收器工作原理..9

3.2.3载频读取.10

3.2.4微处理器电路10

3.3衰耗盘.10

3.3.1衰耗盘作用..11

3.3.2衰耗盘电路原理说明11

3.4站防雷和电缆模拟网络盘12

4ZPW-2000A无绝缘移频由动闭塞实验系统设计14

4.1实验系统平面布置图.14

4.2.1区间移频柜设备布置15

4.2接口柜电路设计16

4.2.1发送器“N+1”冗余系统设计19

4.2.2区间组合排列布置..21

4.3复线区间信号平面设计22

4.3.1低频信息码传输列表的设计.22

4.3.2区间信号平面图的设计..22

4.3.3区间平面布置图的说明..25

4.4衰耗盘电路设计27

4.4.1衰耗盘面板布置图27

4.4.2衰耗盘设计说明..27

4.4.3衰耗盘端子用途说明.29

4.5电缆模拟网络盘设计..31

4.5.1防雷模拟网络盘结构.31

4.6电气绝缘节设计32