倒车防撞感应系统的设计
倒车防撞感应系统的设计(论文11000字)
摘要:随着社会的快速前进,人们的消费水平也逐年提高。特别在交通运输行业,汽车的购买量也逐年上涨,汽车给人们带来方便的同时,随之而来也引发了多种问题,列如,汽车拥堵、醉酒驾车等等。其中汽车拥堵可带来撞车,撞人,撞物等事件,从而带来了人员伤亡和财产损失。本次设计的汽车防撞感应系统就是针对这一现状设计的。
本设计是以MSP430F149单片机为核心控制器件,通过控制超声波收发装置来检测小车与障碍物的距离,该距离可以通过12864LCD显示屏实时的显示出来,当小车与障碍物的距离小于事先设定的安全距离时蜂鸣器发出报警,然后通过矩阵键盘手动的来控制小车的刹车。
关键词:MSP430F149单片机;超声波接收装置;12864LCD显示屏;蜂鸣器;小车
Reversing anti-collision interaction system
Abstract: With the rapid advancement of society, people's consumption level also increased every year. Especially in the transport sector, purchases of cars is also rising year by year, cars bring convenience to people at the same time, the attendant also led to a variety of problems, such as columns, automobile congestion, drunk driving and so on. The car crash congestion can bring butt, hit, etc, leading to casualties and property losses. The car crash sensing system design is designed for this situation. [资料来源:www.doc163.com]
The core of this design is MSP430F149 monolithic integrated which is the main control component . The car away from the obstacle of distance is obtained by ultrasonic module . The distance can be displayed through the 12864display screen. When the small car away from the obstacle of distance is less than the safe distance ,the alarm .Then we control the small by keyboard.
Key word: MSP430F149 monolithic integrated; ultrasonic wave modules;12864display screen;the alarm modules; small car
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目 录
1绪论 1
1.1论文背景 1
1.2系统的主要功能介绍 2
2系统总体设计 3
2.1系统总体设计框图 3
2.2设计思路 4
3硬件电路的设计 6
3.1MSP430F149主控芯片 6
3.1.1主控芯片的简介 6
3.1.2最小系统 7
3.2超声波测距模块 9
3.2.1设计的任务 9
3.2.2超声波测距的基本原理 9
3.2.3 HC-SR04超声波模块的原理与使用 10
3.3小车驱动模块设计 12
3.3.1设计要求 12
3.3.2L298N电机驱动模块的简介 12 [来源:http://www.doc163.com]
3.3.3 驱动电路的设计 14
3.4 显示单元 15
3.5报警模块 17
3.6矩阵键盘 17
4系统软件设计 19
4.1 测距单元软件设计 19
4.1.1 软件设计 19
4.1.2 误差软件修正 20
4.2 驱动调速单元软件设计 20
4.2.1 PWM调速的软件实现 20
5总结与展望 22
5.1 设计技术上的优缺点 22
5.2 发展趋势 22
结束语 23
参考文献 24
致谢 25
[资料来源:https://www.doc163.com]