文档介绍：计算机12届毕业设计文献综述
汽车倒车防撞系统超声波测距仪
学生姓名
学号
所属学院信息工程学院
专业计算机科学与技术
班级计算机12-3班
指导教师
汽车倒车防撞系统超声波测距仪
摘要:分析了汽车倒车防撞系统的基本设计原理以及目前国内外此类防撞系统存在的问题,较详细的介绍超声波测距系统以及根据该系统设计原理、方法和步骤,研制的汽车防撞测距系统。这种测距系统有效测量车尾5m以内障碍物的实时距离,在汽车倒车过程中,能自动检测车尾障碍物的距离;当达到极限位置的时候并发出声光警报,提醒司机刹车。
本系统主要在硬件方面,围绕单片机展开,设计了具有通信、预处理等接口的硬件电路,完成对回波数据的采集、处理、显示、报警等功能,并利用单片机片内的温度传感器采集环境温度,对声速做出修正。
关键词:超声、测距、报警、单片机
Abstract: the author analyzes the back car crash the system of basic design principle and such crash at home and abroad and the problems existing in the system, a detailed introduction ultrasonic ranging system and according to the system design principle, method and procedure, the development of the automotive anti-collision distance measuring system. The effective measuring the distance measuring system within 5 m of real-time obstacle distance, in car back-draft process, can automatically detect the obstacles distance; When they reach the limit position of time and give out sound and light alarm, remind the driver brakes.
This system mainly in hardware, around on single chip puter, the design munication, pretreatment, the interface hardware circuit and pletion of echo data collection, treatment, display and alarm functions, and the temperature inside the piece by SCM environment temperature sensors to collect, to make correction sound velocity.
Keywords: ultrasound, ranging, alarm, microcontroller