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摘要目前，我国的轨道交通正处在一个史无前例的大发展时期，人们对它有着很高的期望和要求。运营安全是城市轨道交通的基础。搭建城市轨道交通运营安全模拟沙盘，可以模拟不同类型的事故或危险环境，并可进行不允许实际发生的仿真实验，从而为城轨交通安全运营提供经验积累和技术支持，在实际中减少或避免安全事故，降低财物损失及旅客生命危险。
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本文针对城轨交通运营安全模拟沙盘，利用 PIC 单片机开发分布式列车模型控制系统。首先介绍了列车模型控制系统的基本原理和系统构架，然后详述了调制器、解调器的软硬件设计，其中调制器存储模型列车的状态，产生出方波形的DCC电流控制信号，用于给轨道供电和传输控制信息。同时与上位机通过485总线通讯，接受上位机控制面板的控制。解码器解码DCC电流信号，控制相应的执行机构如列车电机、道岔扳动舵机和信号灯。最后基于MFC开发了基于MSComm串口空间的测试程序。23906
在测试环境和沙盘中进行了控制系统功能验证，结果表明所开发的控制系统具备列车控制、信号灯与道岔控制满足了城轨交通运营安全模拟沙盘的控制需求。
关键词 安全运营 PIC DCC 沙盘模拟
毕业设计说明书（毕业论文）外文摘要
Title The Hardware and Software Design of Model train control system
Abstract
Rail transportation system has an irreplaceable position in modern public transportation system.At present, China's rail transportation is in an unprecedented period of great development with people have high expectations and requirements. Operational safety is the foundation of urban rail transit. Build urban rail transit operators security simulation sand table can simulate different types of accidents or hazardous environments,thus providing experience and technical support for the safe operation of urban rail transit, reduce or avoid accidents, reduce property damage and passenger danger in practice.
In this paper, sand table simulation for urban rail transit operation safety to use PIC microcontroller development of distributed model train control systems.Firstly, the basic principle and system architecture model train control system.Then details the modulator, demodulator hardware and software design.Which state modulator storage model trains, DCC current control signal to produce a square wave is used to track and transmit power control information.Simultaneously with the host computer via the communication bus 485, PC control receiver control panel. DCC decoder decodes the current signals to control the appropriate enforcement agency, such as the train motors, servos and lights pulled turnout. Finally, based on MFC developed based on MSComm space test program.
Control system functions were verified in a test environment and sandbox, the results show that the developed control system with train control, control lights and turnouts meet the needs of urban rail traffic control simulation sandbox of operational safety.
Keywords Security Operations PIC DCC Sand table simulation
目 次
1 绪论 1
1.1 课题简介 1
1.2 目的与意义 1
1.3 国内外研究现状 1
1.4 结论 3
2 列车模型控制场景的原理 3
2.1 系统总体结构 4
2.2 DCC信号标准 4
2.3 列车控制 11
2.4 信号灯到场控制 12
3 调制器和解调器硬件设计 12
3.1 单片机选型与485通讯原理 13
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