金秋时节.doc

学号: ***********
毕业论文
汽车防撞报警系统设计
Automotive collision avoidance alarm system design
学院计算机与电子信息学院专业电子信息科学与技术班级电子09-1
学生*** 指导教师(职称)
完成时间 2013年03月25日至2013年06月15日
摘要
随着经济的高速发展和居民生活水平的不断提高,我国汽车数量逐年递增,各类交通事故频发, 其中多为汽车碰撞事故。为此本文设计了一种以超声波测距和AT89C51 单片机为核心的汽车防撞报警系统,以期提高汽车运行的安全性,减少交通事故。该系统根据超声波测距原理,以AT89C51为核心,设计了汽车防撞报警系统,主要是将单片机控制模块、超声波测距模块、蜂鸣器报警模块、4位数码管显示模块这几个模块结合起来,通过编写的Keil C51“.C”文件来实现测量距离,当距离小于阈值时,发出报警。本设计的核心是超声波测距模块,其他相关模块都是在测距的基础上拓展起来的,测距模块是利用超声波传感器。该系统可提高汽车行进过程中的安全性,构建汽车安全空间。
关键词:超声波传感器; 测距; 防撞; 报警; AT89C51

ABSTRACT
With the high-speed development of economy and people life level unceasing enhancement, car ownership in China increasing every year, all kinds of frequent traffic accidents, mostly car collision accident. This paper designed a kind of ultrasonic ranging and AT89C51 as the core of automotive anti-collision alarm system, so as to enhance the safety of vehicle running, reduce traffic accidents. According to the principle of ultrasonic ranging, this system usesUSES AT89C51 as the core, the design of the automotive anti-collision alarm system, the main is the single-chip puter control module, ultrasonic distance measuring module, a buzzer alarm module, the four digital tube display module bines several modules, written by Keil C51. "C" files to achieve the measurement distance, when the distance is less than the threshold, issued a report to the police. This design is the core of the ultrasonic ranging module, on the basis of other related modules are in the range expansion, ranging module is to use ultrasonic sensors. The system can improve the safety of vehicles in the process of marching, build space of automotive safety.
Keywords :ultrasonic sensor; distance measurement; avoiding collision; give an alarm; AT89C51
目录
摘要 2
ABSTRACT 3
目录 4
第一章绪论 6
6
9
9
10
论文的主要内容和章节安排 11
第二章防撞预警系统安全距离模型、决策系统 12
12
12
驾驶员预估模型报警算法 12
本章小结 14