单点信号控制机设计.docVIP

本科学生毕业设计 单点信号控制机设计 黑 龙 江 工 程 学 院 二○一二年六月 The Graduation Design for Bachelors Degree Design?of?Signal?Controller?at?Single? Intersection 目录 摘要 I A II 第1章 绪论 1 1.1 课题研究目的和意义 1 1.2 国内外研究 1 1.2.1 国外交通信号机现状 1 1.2.2 国内交通信号机现状 2 1.2.3 国内外研究现状评述 2 1.3 主要研究内容 3 1.3.1 基本内容 3 1.3.2 拟解决主要问题 3 1.4 技术路线 3 第2章 单点信号控制机总体设计 5 2.1 STC51系列单片机简介 5 2.2 PC机和下位机通信描述 8 2.3 下位机功能描述 8 2.4 RS-232C通信方式 10 2.5 本章小结 11 第3章 单点信号控制机硬件设计 12 3.1 车辆检测模块设计 12 3.2 时钟模块设计 13 3.3 防死机模块设计 14 3.4 信号控制机与PC机通信模块设计 15 3.5 电源模块设计 16 3.6 显示模块设计 16 3.6.1 信号显示模块设计 16 3.6.2 倒计时模块设计 18 3.6.3 时间显示模块 19 3.7 故障检测模块设计 19 3.8 Protel99软件使用 20 3.9 本章小结 20 第4章 软件设计 21 4.1 配时方案确定 21 4.2 软件流程图 22 4.3 PC机和下位机之间通信 22 4.4 应用C语言编写信号配时方案 24 4.5 感应方案 26 4.6 本章小结 27 结论 28 参考文献 29 致谢 31 附录A：电子元器件列表及应用软件 32 附录B：电路图 33 附录C：程序 36 摘要 1、2、3、 关键字：信号机；；；相位；感应控制 ABSTRACT The intersection is an important part of the city roads, intersection capacity determines the level of road service. Traffic composition and properties of the different countries in different regions are very different, the function of the traffic signal controller to meet the characteristics of the intersection where traffic can only be efficient to improve the intersection by the ability. Intersection of the traffic is random, in exceptional circumstances, the timing signal control can not meet the requirements. Therefore, the design of the induction signal control, with the program change with changes of the traffic signal timing, this control method is more flexible and effective. In this design, the signal controller to achieve the implementation of the program, the vehicle sensor control to meet the above requirements. Specific design is as follows: 1、VB Language preparation of PC, the main function as communications port, baud rate, data bits, parity bit and stop bit selection. There are four display windows show the traffic volume of the imports of East and West Road. When the receiver to the next machine, has been treated in the corresponding window to disp