目录 绪论 ······································ 1 （一）本课题研究的目的和意义 ························· 1 （二）城市智能交通系统的发展现状 ······················· 1 1． 智能交通系统的基本概念 ························· 1 2． 智能交通的发展简史 ··························· 1 3． 我国的 ITS的建设现状 ·························· 2 第一章 概述 ·························· 错误！未定义书签。 第二章 可编程控制器简介 ···················· 错误！未定义书签。 （一） 可编程序控制器的产生与发展 ·············· 错误！未定义书签。 （二） 可编程控制器的组成 ·················· 错误！未定义书签。 图 2-1. PLC的组成 ······················· 错误！未定义书签。 1. 输入寄存器 ························· 错误！未定义书签。 2. 输出寄存器 ························· 错误！未定义书签。 3. 存储器··························· 错误！未定义书签。 4. CPU单元 ·························· 错误！未定义书签。 5. 其它接口单元 ························ 错误！未定义书签。 （三） 可编程控制器的工作原理 ················ 错误！未定义书签。 （四）可编程控制器的特点 ·················· 错误！未定义书签。 （五）可编程控制器的主要功能 ························· 2 （六） 可编程控制器的发展趋势 ························· 2 第三章 系统方案设计 ······························· 3（一） 装置结构与工艺要求 ·························· 3 (二) 统计输入/输出点数并选择 PLC型号 ····················· 4 （三）...
