毕业设计：基于FPGA的交通灯控制器.doc

 DATE \@ yyyy/M/d 2017/9/26基于FPGA的交通控制系统的设计 PAGE  PAGE I 毕业设计（论文）报告 题目：基于FPGA的交通灯控制器 学校：青海民族大学 院系：物理与电子信息工程学院 班级：08级电子信息科学与技术班 姓名：李国慧 孔艳妮 张麟 指导老师：孙惠章 时间：2011年11月1日 摘要:通过分析现有的几种交通控制模式，讨论几种常用的交通控制系统技术，介绍了利用EDA技术基于FPGA芯片设计制作的交通控制系统，其优势是运行速度快、应用灵活及低功耗等。只需要修改FPGA芯片的程序即可修改整个系统的功能,最大限度的简化外围电路。 本设计有几个独立模块，他们相互辅助工作。FPGA主控芯片控制程序运行，其中计数器进行减计时，主支干道控制器来控制主支干道减计数器的选择和信号灯的控制，数码管扫描控制部分控制每个数码管十位数及个位数计数的分配，七段显示译码器控制数码管显示相应数字；信号源提供系统所需扫描信号和秒脉冲； 74LS138译码器用来选通相应数码管进行工作，使主支干道互不影响，同一时间只有一组数码管工作；硬件外围电路进行显示，是整个系统功能的直接表现。 关键词：交通控制、EDA、硬件描述语言、计数器、译码器、振荡器 基于FPGA的交通控制系统的设计  PAGE IV ABSTRACT By analyzing several modes of traffic control,discussing several common traffic control system technology, introduces the use of EDA technology which is based on FPGA chip design for the traffic control system.Its advantages is the operational speed, application flexibility and low power consumption . It Only need to modify the FPGA chip program when need to modify the functions of the entire system ,which maximizes the simplified external circuit. This design has several independent modules, each of which supports their work. Master control program FPGA chip runs the whole system,and the counter is to reduce the time. The main and branch trunk controller is to control the main roads by supporting the choice of the counter and signal control, the digital scan control part is to control every bits of each digital distribution. The seven-segment display decoder corresponding digital control digital display; THE signal source is to provide the necessary signal; The 74LS138 decoder is used to strobe the corresponding digital control work, affect each main branch roads and digital control work at the same time ;The hardware peripheral circuits is a direct function of the whole system pe