毕业论文：基于EDA技术的交通灯控制器的设计（终稿）.doc

毕业设计 交通灯信号控制器的设计 学 院 专 业：电子信息科学与技术 姓 名： 学 号 指导教师： 2011年 6 月  摘 要随着集成电路(IC)技术的发展,电子设计自动化(EDA)逐渐成为重要的设计手段已经广泛应用于模拟与电路系统等许多领域。EDA 技术使得电子电路设计者的工作利用硬件描述语言和EDA 软件平台完成对系统硬件功能的实现极大地提高了设计效率缩短了设计周期节省了设计成本。电子设计自动化 Abstract With the development of the integrated circuit (IC) technology, electronic design automation (EDA) has gradually become the important design method. It has already widely applied in the analog and the digital circuit system and many other domains. This design uses the EDA technology, selects VHDL hardware circuit description language which is widespread applied present, and the CPLD chip and the corresponding periphery component to realize the traffic light signal controller design. This system circuit includes crystal oscillator, frequency divider, keyboard control module, controller module, drive current module and display module six parts. The high frequency signal which is produced by the crystal oscillator produces is divided by frequency division to a time impulse and provides the signal impulse for the keyboard dynamic scanning and the controller module; The keyboard control module realizes the controller module condition choice by the way choice; The controller module sends out the signal after the drive current modules actuation, realizes the display module function. The above part completes are realized by the peripheral circuit. The others are realized by CPLD component through the software programming and complete the transportation directive function finally. The EDA technology causes the electronic circuit designer can complete system hardware function realization only with the hardware description language and the EDA software platform. It also raises the rated capacity enormously, reduces the design cycle and saves the designed cost. Key words: signal controller, electronic design automation (EDA), complex programmable logic device (CPLD) 目 录 摘 要 .Ⅰ Abstract（英文摘要） .Ⅱ 目 录 .Ⅲ 第一章 绪 论 1 1