毕业设计（论文）报告
题 目
院（系）别 专 业
姓 名 学 号 指导教师
2011年 4 月
摘 要
无锡科技职业学院
本设计是基于51单片机控制的计步器，这种系统具有很强的适用性、灵活性、先进性,它的应用大大方便了人们的生活。本文给出了系统的硬件组成和硬软件设计方法，介绍了计步器的基本结构和程序框图等，电子计步器主要由振动传感器和电子计数器组成。 人在步行时重心都要有一点上下移动。以腰部的上下位移最为明显，所以记步器挂在腰带上最为适宜。
所谓的振动传感器其实就是一个平衡锤在上下振动时平衡被破坏使一个触点能出现通/断动作，由电子计数器记录并显示就完成了主要功能，其他的热量消耗，路程换算均由电路完成。
关键词：计步器，AT89C51，传感器
Abstract
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无锡科技职业学院
The design is based on the pedometer 51 Microcontroller，This system has strong applicability, flexibility, advanced, which greatly facilitate the application of people's lives.In this paper, the hardware and the system hardware and software design methods,In this paper, the hardware and the system hardware and software design methods,Pedometer introduced the basic structure and the block diagram, etc.Mainly by electronic pedometer vibration sensors and electronic counter.People walking up and down the center of gravity should be a little bit.Displacement of the waist and down to the most obvious,Therefore, step counter belt hung the most appropriate.
The so-called vibration sensor is actually a balance weight in the upper and lower vibration balance is upset to make a contact to appear on / off action,Recorded and displayed by the electronic counter to complete the main functions，Other energy consumption, distance to complete conversion by the circuit.Other energy consumption, distance to complete conversion by the circuit.
Keywords: pedometer;AT89C51; sensor
前言
当今社会，随着经济的发展，人们生活水平的提高，肥胖的人越来越多，也
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无锡科技职业学院
就导致了越来越多的疾病产生，因此，人们越来越关注健康问题。因此计步器就成了时下流行的趋势，坚持步行，能帮助高血压患者改善症状。步行时，通过伸缩肌肉，血液在流动时的抵抗值下降，血压下降且稳定。经常步行的人很少患高血压或低血压病。坚持步行能减少血管内附着的脂肪性物质，使体重减轻，也逐渐减少心脏的负荷。而基于单片机为核心控制的计步器有着精确，可靠，稳定，方便等优点，已被大多数人所接受。
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目录无锡科技职业学院
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概述 ............................................................................................................................ 5 1.1 课题背景 ......................................................................................................... 5 1.2 国内外研究现状 ............................................................................................. 5 1.3 本课题研究的意义 ......................................................................................... 5 1.4 单片机结构及其工作原理 ............................................................................. 5 1.5 单片机的组成 ................................................................................................. 5 1.6 单片机的特点 ................................................................................................. 6 1.7 AT89C51的单片机简介 ................................................................................. 6 1.8 主要特性 ......................................................................................................... 7 1.9 管脚说明 ......................................................................................................... 7 1.10 振荡器特性 ................................................................................................ 11 2 系统框图及原理 ...................................................................................................... 12 3 电信号采集与处理 .................................................................................................. 13
3.1 电信号发生器 ............................................................................................... 13 4 系统硬件 .................................................................................................................. 14
4.1 系统具体电路 ............................................................................................... 14
4.1.1 振荡电路 ................................................................................................. 14 4.1.2 复位电路 ................................................................................................. 14 4.1.3 按键电路 ................................................................................................. 15 4.1.4 LED显示电路 ......................................................................................... 15 4.1.4系统输入电路 .......................................................................................... 17
5 系统软件 .................................................................................................................. 18
5.1 人机界面驱动 ............................................................................................... 18
5.3.1 数码管模块驱动 ..................................................................................... 18 5.3.2 键盘驱动 ................................................................................................. 18 5.2 系统流程图 ................................................................................................... 18 5.3 程序 ............................................................................................................... 19 结论 ................................................................................................................................. 20 参考文献 ......................................................................................................................... 21 致谢 ................................................................................................................................. 22
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