课程设计--超声波倒车雷达测距

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1、课程设计设计题目超声波倒车雷达测距设计题目超声波倒车雷达测距成绩课程设计主要内容（1）熟悉C51单片机原理、各芯片的应用；（2）根据实验确定超声波测量精度；（3）设计外部硬件电路；（4）软件完成程序流程图设计和编程，其中包括温度补偿部分、液晶显示部分和报警部分；（5）软硬件联合调试；（6）书写设计说明书。指导教师评语签名：20年月日14目录摘要··········································································4第一章绪论··········

2、·························································41.1背景···································································41.2目前研究现状分析·························································41.3拟解决的关键问题····················································

3、·····4第二章课程设计目的··························································4第三章课程设计正文··························································43.1系统分析·································································43.2总体设计·········································

4、························5143.3原理图设计·······························································93.4软件程序设计···························································11第四章调试方案······························································10第五章项目小组分工··············

5、············································12第六章课程设计总结·························································12参考文献·····································································13附件1：项目原理图附件2：源程序14摘要目前，单片机已经渗透到了我们生活的方方面面。本系统基于AT89S52单片机，利用超声波模块进行距离的探测，将

6、所测得信号交给单片机进行处理，由1602液晶显示模块进行显示，同时将感应出是否有人体接近。在危险距离之内还有报警音提示，使模型小车避开障碍物。关键词：单片机、超声波测距、报警、壁障1绪论：题目：超声波倒车雷达测距1.1背景：倒车雷达的快速发展始于20世纪末21世纪初，经过几年的时间，随着技术发展和用户需求的变化，倒车雷达在几年的时间里大致经过了六代的演变。第一代：倒车时通过喇叭提醒。“倒车请注意”！这就是倒车雷达的第一代产品，只要司机挂上倒档，它就会响起。第二代：采用蜂鸣器不同声音提示驾驶员。倒车雷达系统的真正开始。倒车

7、时，如果车后1.8m～1.5m处有障碍物，蜂鸣器就会开始工作。担对驾驶员帮助不大。后来又有：数码波段显示具体距离或者距离范围、液晶屏动态显示等。担这些倒车系统在使用的过程中都有一定的缺陷，汽车尾部与后车轮之间的空间都普遍成了探测的盲区，致使汽车在倒车时都会受到不同程度的刮伤、碰撞等，这是广大爱车族们所不愿意看到的。1.2目前研究现状分析目前国内做倒车雷达的厂家很多，但是性能都不是很理想，普遍存在倒车雷达探测声波波束较窄，当障碍物偏离探头的正对角度时，存在较大的探测盲区。对管锥状障碍物探测存在较多的死角。另外，探测低矮的障

8、碍物也比较困难，高度在50cm以下的障碍物就探测不到了，在很大程度上不能满足广大车主的需求。尤其当下车位少、停车难成了平常事。停车越来越困难，碰撞时有发生。倒车雷达的使用有助于减少停车碰撞事件的发生。而我们所要制作的雷达将重点放在探测高度较低的障碍物，利用超声波的特性，将爱车与较低障碍物的距离测出。1.3拟解决的关键