基于单片机自行车测速系统设计文章.docx

基于单片机自行车测速系统设计基于单片机自行车测速系统设计摘要随着居民生活水平的不断提高,自行车不再仅仅是普通的运输、代步的工具, 而是成为人们娱乐、休闲、锻炼的首选。自行车的速度里程表能够满足人们最基本的需求, 让人们能清楚地知道当前的速度、里程等物理量。本论文主要阐述一种基于霍尔元件的自行车的速度里程表的设计。以 AT89C52 单片机为核心, A44E 霍尔传感器测转数, 实现对自行车里程/ 速度的测量统计, 采用 24C02 实现在系统掉电的时候保存里程信息, 并能将自行车的里程数及速度用 LED 实时显示。文章详细介绍了自行车的速度里程表的硬件电路和软件设计。硬件部分利用霍尔元件将自行车每转一圈的脉冲数传入单片机系统,然后单片机系统将信号经过处理送显示。软件部分用汇编语言进行编程, 采用模块化设计思想。该系统硬件电路简单, 子程序具有通用性, 完全符合设计要求。关键词:里程/ 速度;霍尔元件;单片机; LED 显示基于单片机自行车测速系统设计 Bike speed system design based on single chip ABSTRACT With the developing of people ’s life, the bicycle is not only the universal tool of transportation and substitute for walking, but es the first choice of entertainment and exercising. The bicycle mileage/speed can fulfill the basic need of people ’s life, so that they can learn the speed and the mileage of the bicycle. In this paper, the bicycle mileage/speed design based on the Hall element is elaborated. By AT89C52 as kernel, using A44E Hall element to measure revolution, the measure and statistic are achieved. The range information is saved by 24C02 when the power is off, the bicycle speed can be displayed on LED. In this article, the hardware circuit and software design of bicycle mileage/speed instrument are introduced in detail. About the hardware, the pulse number is transmitted of one cycle of the bicycle into Single Chip puter system. Then the signal processed by Single Chip puter system is sent to display scream. About the software, in assemble language; the program is designed in the mode of modules. The system has simple hardware, common sub-program, and meets the demand of design. . Keyword : Mileage / speed; Hall element; Single chip puter ; LED 基于单片机自行车测速系统设计引言自行车被发明及使用到现在已有两百多年的历史, 这两百年间人类在不断的尝试与研发过程中, 将玩具式的木马车转换到今日各式新颖休闲运动自行车, 自行车发展的目的也从最早的交通代步的工具转换成休闲娱乐运动的用途。随着居民生活水平的不断提高,自行车不再仅仅是普通的运输、代步的工具, 而是成为人们娱乐、休闲、锻炼的首选。因此, 人们希望自行车的功用更强大, 能给人们带来更多的方便。自行车里程速度表作为自行车的一大辅助工具也正是随着这个要求而迅速发展的,其功能也逐渐从单一的里程显示发展到速度、时间显示, 甚至有的还具有测量骑车人的心跳、显示骑车人热量消耗等功能。本设计采用了 MCS