武汉理工大学毕业设计（论文）目录摘 要. IAbstract.II1 绪论.11.1 课题研究目的及意义.11.2 国内外计步器的发展情况.11.3 计步器的原理及分类.22 计步器系统总体设计结构设计.2 2.1 计步器总体设计.32.2 三种计步器的对比.82.3 系统硬件结构方案设计.102.4 系统设计方案论证.133 计步器系统硬件电路设计.153.1 加速度传感器电路.153.2 单片机系统电路.173.3 LCD显示电路.203.4 开关与电源电路.234 计步器系统软件设计.304.1 主程序流程图.304.2 子程序流程图.315 计步器调试与结果分析.355.1 实物系统调试.355.2 结果分析.376 总结与展望.44参考文献.45附录一 程序代码.46附录二 设计电路图.50附录三 硬件电路实物图.53致谢.55摘要随着我们生活水平的不断提高，社会各阶层的人们开始对身体健康尤其的关注。然而健身的方法数不胜数，步行是最好的运动之一。健康需要走出来，行走锻炼人类生命健康的加氧站。步行是一种静中有动、动中有静的健身方式，可以缓解神经肌肉紧张。据专家实验得出，当烦躁、焦虑的情绪涌上心头时，我们以轻快的步伐散步15分钟左右，即可缓解紧张、稳定情绪。计步器功能可以根据计算人的运动情况来分析人体的健康状况。而人的运动情况可以通过很多特性来进行分析。比如人在运动时会产生加速度。论文主要采用了以单片机AT89C52为核心的计步器控制系统，并实现运动计步，是通过人运动时产生加速度变化来实现的，本文利用具有体积小，功耗低，三轴加速度传感器MMA7455来实现，采集到的加速度数据通过适当的算法就可以实现计步功能，最后通过LCD1602给予显示。本设计的特色在于完整的设计出计步器及其控制电路，整个系统具有控制方便，检测精确，硬件结构简单，方便携带，成本较低等优点。关键词：单片机；加速度传感器；液晶显示AbstractWith our continuous improvement of living standards, social strata, especially the health of people began to concern. However, numerous methods of fitness, walking is the best exercise one. Health needs to come out, walking exercise - human life and health and oxygen station. Walking is a static in action, moving in a static way of fitness, can relieve nerve muscle tension. According to experts, experimentally derived, when irritability, anxiety in my heart, we are walking at a brisk pace for about 15 minutes, you can relieve tension, emotional stability. Pedometer function can be calculated according to the movement of the person to analyze human health. And the movement of people can be analyzed through a number of characteristics. Such as human in motion will produce accelerations.Thesis uses a microcontroller AT89C52 as the core control system pedometer, pedometer and achieve movement is produced by the human movement acceleration change to achieve, this paper has a small size, low power consumption, triaxial acceleration sensor MMA7455 to implementation, the acceleration data collected through appropriate algorithms can achieve step count, and finally through LCD1602 given display.This design feature is the complete design of a pedometer and its control circuit, the whole system easy to control, detection accuracy, the hardware structure is simple, easy to carry, and low cost.Keywords: Mcrocontroller, Acceleration s