The Design of Microcontroller-based Multi-function Alarm Design
Abstract: This design is the automobile overspeed alarm control system with the core components of the AT89C51 microcontroller as, first through the Holzer sensor measuring speed, and then let the speed signal enter the SCM, setting the reference speed by the button, And the reference speed is displayed on the 1602LCD display, when the running speed of the vehicle reaches exceeds ,the reference value will display English letter "Warning" warning the display screen with alarming sound, and LED yellow light warning; when the running speed is not beyong the reference value, the LED Green lighting, alarm can not occur. The overspeed alarm in the design has the advantages of low cost, high precision, easy to implement, also it can according to the actual situation, independently to set the speed limit, and through the indicator light and buzzer alarm to remind drivers to slow down, then can help solve the overspeed problem bring security risks objective effectively.
Key words: AT89C51; Holzer sensor;1602LCD display
目 录
摘要 1
引言 1
1.设计概述 2
1.1设计背景 2
1.2现实意义 2
1.3功能概述 3
1.4总体方案的设计 3
2.硬件设计 5
2.1单片机的选择 5
2.2霍尔传感器 7
2.3 LCD1602液晶显示模块特点及引脚图 8
2.4各模块介绍 9
3.软件设计 11
3.1程序设计步骤 11
3.2程序流程图和速度转换 12
4.仿真调试 13
4.1 Keil软件及仿真调试 13
4.2 Proteus软件仿真 15
5.结束语 16
参考文献 16
附录 17
致谢 22
基于单片机的汽车超速报警器设计
引言
随着世界汽车行业的发展和人们生活节奏的加快,汽车已经成为人们生活中最重要的交通工具。汽车是工业革命的重要产物,人均汽车拥有量和汽油消耗量与一国经济发达程度存在正相关关系;汽车使用量的增加,必然导致交通事故死亡率的增加,因此,经济发达水平与交通事故死亡率也存在正相关关系。以中美为例,中国2009年末人口数约为13.3亿,每十万人口死亡率约5.1人,美国2010