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电子技术课程设计-交通信号灯控制电路设计，共24页，6830字
摘 要
常用的集成电路设计的交通灯信号控制电路主要由四部分组成：秒脉冲发生器、分频器、控制器、计数译码驱动器等部分组成。其中秒脉冲发生器电路由石英晶体振荡器形成，选用合适的参数，产生时间间隔威一秒的脉冲；分频器将根据需要选取，本设计将选取双D触发器CD4013来完成四分频；控制器部分由74LS164串行输入并行输出移位寄存器构成环行计数器和附加其他基本门电路组成，使亮灯时间得到控制；显示电路部分主要由计数译码驱动器等组成使司机能看到亮的是什么颜色的灯，是否违反了交通规则。该系统以电子技术为基础，选用了常用的集成电路以及显示仪器。运用Protel 99SE软件绘制了单元电路以及总体电路图；借助Multisim 2001仿真软件对单元电路以及总体电路进行了仿真虚拟实验，达到了预期的要求。该交通信号灯不紧具有智能化的功能，还采用数字式显示显得很直观、也很人性化，该系统在交通路口的交叉处用途非常广泛，而且十分必要。
关键词 交通信号灯；Multisim 2001；减法计数；分频器
Abstract
IC design commonly used for traffic lights signal control circuits from the four main components: second pulse generator, the crossover, a controller, such as counting decoding drive components. One second pulse generator circuit formed by the quartz crystal oscillation, choose the appropriate parameters, a time interval of one second pulse of Granville; crossover will need to select, the double-D design will be selected to complete flip-flop CD4013 quarter frequency; control With some input from 74 LS164 serial output parallel shift register a circular counters and other basic additional door circuit, is on control; show circuit some of the major count by the decoding of the driver and other drivers can see the light What is the color of lights, whether the violation of traffic rules. The system of electronic technology as the basis for selection of the commonly used integrated circuits and display equipment. Protel 99SE use mapping software unit of the overall circuit and the circuit; Multisim 2001 with the simulation software modules and the whole circuit to circuit simulation virtual experiment, achieved the expected demand. The traffic lights do not bear with intelligent features, but also use digital display is very intuitive and very humane, traffic junctions in the system of cross-purposes, very extensive and very necessary.
Keywords traffic lights; Multisim 2001; subtraction count; crossover

目 录 3
摘 要 1
Abstract 2
第一章 交通信号灯控制电路总体设计 3
1.1交通信号灯 3
1.2交通信号灯的设计思想 3
1.3交通信号灯的工作原理 4
第二章 集成电路交通信号灯单元电路设计 5
2.1 石英晶体秒脉冲产生电路 5
2.2 时钟电压源构成的秒脉冲发生器 5
2.3 555定时器构成的秒脉冲发生器 6
2.4控制器电路 6
2.5显示电路 8
第三章 集成电路交通信号灯单元电路仿真分析 10
3.1秒脉冲产生电路仿真 10
3.2交通信号灯控制器电路仿真 11
第四章 交通信号灯电路及原理说明 12
4.1555定时器 12
4.2二-五-十进制异步加法计数器7490 13
4.3 8 位移位寄存器74LS164 14
4.4十进制同步加/减计数器 74LS190 14
参考文献 16
总 结 17
致 谢 18