湖北文理学院理工学院

题 目 机械 学 号学生姓名指导教师起讫日期

本科毕业论文（设计）

汽车倒车超声波报警器的设计与实现 机械设计制造及其自动化 专业张 能 胡 雄 杰

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系 11316468 2015.3.20 ~ 2015.5.22 ? 汽车倒车超声波报警器设计与实现

摘要 汽车倒车一直都是困扰驾驭员，尤其是菜鸟。倒车超声波能用声音或更为直观的方式奉告驾驭员周围障碍物的状况，协助驾驭员看清视野死角和消除视野含糊的缺点，提高驾驶安全性。这篇文章着重介绍了一种根据AT89C51单片机的超声波脉冲测距的倒车防撞报警器的设想。该设想用超声波在空气中传播速度为判断条件,使用超声波的反射，测出间隔。论文阐明了超声测距的基本原理及超声传感器的特性，并在超声测距原理的基础上,指出了体系的整体构成，以蜂鸣器报警作为特别提示，具有很强的实用性。

关键词 超声波；防撞；传感器；报警器；控制系统

关键词：倒车雷达 超声波 单片机SPCE061A

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ABSTRACT The back-draft back sight is not good always puzzles the pilot, specially novice's difficult problem.The back-draft radar can or a more direct-viewing form informs around the pilot by the sound the obstacle situation, the field of vision dead angle and the elimination line of sight fuzzy flaw, enhances driving the security.This article introduced one kind in detail based on AT89C51 monolithic integrated circuit ultrasonic wave pulse range finder back-draft proximity wamer design. This design take the ultrasonic wave in the air the propagation velocity as the determination condition, the use ultrasonic wave reflection, the survey distance.The paper the supersonic range finder principle foundation, proposed the system overall constitution, reports to the police by the buzzer took the warning reminder, ; sensor; alarm; control system

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