基于单片机的盲人交通提示系统的设计.doc

编 号： 审定成绩： 毕业设计（论文） 设计（论文）题目： 学院： 学 生 姓 名 ： 专 业 ： 班 级 ： 学 号 ： 指 导 教 师 ： 答辩组 负责人 ： 填表时间：年月 大学教务处制摘 要 智能交通系统是上世纪中期开始研究的交通系统。当今世界，随着汽车普及，很多国家着手该系统的开发和应用，已经取得了很多成果。为解决盲人交通问题研究了一种新型交通语音提示系统。采用AT8951单片机结合无线射频芯片NRF401的方法为盲人设计一套便携式的信号发送/接收终端以半双工通信的方式和ISD1420语音录放模块来共同实现交通灯信号的无线语音提示功能性能比现有语音提示系统有了较大提高。 【关键词】AT89C51 单片机技术 ISD1420 NRF401  ABSTRACT Intelligent Transportation Systems is a transport system that began to study in the middle of the last century. Today, with the popularization of the car, many countries proceed with the development and application of the system, which has achieved a lot. Intelligent Transportation Systems should contain the traffic monitoring, smart to change the traffic light time and solve the problem of blind people crossing the road. In this paper, the main purpose is to solve t the problem of blind people crossing the road. To resolve the traffic problem of blind man, this paper introduces a new kind of method which uses MCU AT89C51 together with NRF401 to design a convenient signal transmitting/receiving terminal instead of the existing traffic light system. It actualizes the function of wireless suggestive voice by using voice recording/playing back module ISD1420.The signal transmits by the method of half duplex communication. The new system’s performance is better than the existing system’s by testing and verifying.The system selects AT89C51 chip. It is a low-power and high-performance processor., also apply to regular programming, which makes 51microcontroller system provides a flexible, effective solution programs. MCU control various input and output signals through the program, you can easily choice of operating rules, in order to achieve a variety of functions. This design can be embedded directly in the existing traffic lights, saving the cost of the transformation of the transport system. Blind