健康计步器毕业论文说明书.doc

可编辑版 Word完美格式 2017届电子信息工程专业本科毕业论文 第 第 PAGE \* MERGEFORMAT 1 页 共 NUMPAGES \* MERGEFORMAT 4 页 健康计步器的设计 摘要：改革开放三十年来，随着社会的不断进步，人们的生活水平也不断的提高了，许多人把健身当做每天的一门必修的功课，在诸多的健身方法中，跑步便成了他们最有效，最简单的运动方法。计步器是一种颇受欢迎的日常锻炼进度监控器，可以激励人们挑战自己，增强体质，帮助瘦身，也成了计量跑步时间、步数和里程的最简易、有效的工具。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。与传统的机械式传感器不同，MMA7455是微机械式三轴传感器，由它捕获人体运动时加速度信号，更加准确。信号通过低通滤波器滤波，由单片机内置A/D转换器对信号进行采样、A/D转换。软件采用自适应算法实现计步功能，减少误计数，更加精确。单片机STC89C52控制液晶显示计步状态。整机工作电流只有1-1.5mA，实现超低功耗。 关键字：计步器 MMA7455 加速度传感器 低功耗 Abstract: Thirty years of reform and opening up, with the constant progress of the society, people’s living standard has been improved, many people consider fitness as every one of the compulsory courses, in many fitness method, running as their most effective, the most simple method, pedometer is a popular daily exercise progress monitor, can motivate people to challenge themselves, enhance physical fitness, to help lose weight. pedometer also became the running time, measurement step number and calories burned the most simple, effective tool. Pedometer function can calculate the movement of people to analyze the situation of human health. And the movement of people can be analyzed by many features. With the traditional mechanical sensors differ, MMA7455 three-axis sensor is a capacitive acceleration signal by its human motion capture, and more accurate. Signal through a low pass filter, the microcontroller built-in A / D converter for signal sampling, A / D conversion. Software uses an adaptive algorithm pedometer function, reduce error count is more accurate. STC89C52 SCM control LCD pedometer state. Machine operating current of only 1-1.5mA, ultra-low power consumption. Key words: pedometer, MMA7455, Acceleration sensor, low power consumption 1 绪论 1.1引言 随着社会的发展，人们的物质生活水平日渐提高，人们越来越注重自己的健康，跑步成为了一种方便而又有效的锻炼方式。但是如何知道自己的运动情况？计步器可以帮助人们实时掌握锻炼情况。它的主要功能是检测步数，通过步数和步幅可计算行走的路程。通过运动步数，得以计算人体消耗的热量，所以人们可以定量的制定运动方案来健身，并根据运行情况分析人体的健康状况，因而越来越流行。手持式的电子计步器是适应市场需求