毕业设计说明书_交通信号灯控制系统设计.docVIP

毕业设计说明书 交通信号灯控制系统设计 院（系）名称 信息工程学院 专业名称 电子信息工程 学生姓名 指导教师 2013年5月15日 交通灯控制系统设计 摘 要 交通信号灯常用于交叉路口，用来控制车的流量，提高交叉口车辆的通行能力，减少交通事故。交通灯控制器主要由状态译码器、状态控制器、秒脉冲发生器、定时器、译码显示电路及信号灯组成。状态控制器由CD4029与与非门来实现，脉冲发生器用555产生，减法计数器采用两个74LS192来实现，显示电路经过74LS192的倒计数、七段显示译码器74LS48及七段数码显示器连接起来实现。控制器通过RT对定时器进行控制，从而实现数字的显示及绿、黄、红灯的转换。所设计的这种电路工作可靠，取材容易，制作方便，很受欢迎。该设计对于启发学生的想象力、创造性，提高学生的硬件设计能力有很大的帮助。同时对于今后从事电子产品和电子工程的开发、研制、生产和经营 将打下良好的基础。将这种流水控制应用到实际的生产线中，文中给出了此设计的详细过程及最终的实现电路，并分析了电路的工作原理。 关键词：交通灯，控制器，秒脉冲发生器，主支干道 Design of traffic light control system Author:Jing Zhongzheng Tuthor:Yue Liqin Abstract The traffic light is often used in intersection, which is used to control vehicles flow, improve the intersection vehicle capacity, reduce the number of traffic accidents. Traffic light controller is mainly composed of state controller, state of the decoder, the down counter, load control, decoder, state controller, second pulse generator, timer, decoding display circuit and signal lights. State controller implemented by CD4029 and nand gate, the pulse is used 555, subtraction using two 74ls192 counter, display circuit after 74 ls192 of count down, seven segment display decoder 74 ls48 and seven segment digital display connected. Controller to control timer by RT, so as to realize the digital display and conversion of the green, yellow, red light. This circuit design by reliable work, materials easy, easy. Is very popular. This design to inspire the students imagination, creativity, and improve the students ability of hardware design has a lot of help. At the same time in the future is engaged in the development of electronics and electrical engineering, development, production and management to lay a good foundation. Will this kind of water control is applied to the actual production line, this paper gives the details of the design of the process and ultimately the realization of the circuit, and analyzes the working principle of the circuit. Keywords: Traffic