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摘 要随着E时代的到来，各种智能电子产品如电子计步仪的出现正悄悄改变我们的生活方式。长久以来，国内外的各种计步仪经历了由原始型到智能型的不断升级，但由于自主研发能力的匮乏，国内计步仪的品质仍不能满足需求。因此，积极研发新一代高精度、多功能计步仪对于满足市场需求，提高人民健康水平也能尽到绵薄之力。38515
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本论文开篇介绍了计步仪的工作原理分类，分析了新一代计步仪设计过程中的影响性能关键因素，并经过深入比照选取了合适的主控芯片以及外围设备。最终，选定的方案以TMS320VC5509A系列DSP芯片为核心的控制芯片，通过体积小功耗低的三轴加速度传感器ADXL345完成信号的转化和传送，再结合一系列的外围电路模块如电源、按键显示等模块构成了一个完整的计步仪硬件系统。软件方面在DSP开发平台CCS3.1上完成了相应硬件的初始化，设立三级菜单、采用按键中断和液晶显示相配合的方式建立了灵活的人机界面。
本设计发挥了DSP功能强大、功耗较低的优点，整个计步仪电路结构紧凑，简明易行。基本能够满足用户对新型计步仪的小巧便携、精确度高、性价比高的需求。
毕业论文关键词：TMS320VC5509A ADXL345加速度传感器 计步仪
Abstract
As the E era comes, the emergence of a variety of intelligent electronic products such as electronic pedometer is quietly changing our way of life. For a long time, the domestic and foreign various pedometer has experienced from the original to the intelligent escalating, but due to the lack of independent research and development ability, The quality of the domestic pedometer still cannot meet the demand.Therefore, development of a new generation of high precision, multifunctional pedometer to meet market demand, improve the level of the broad masses of the people's health also render to fulfil.
This paper first introduces the working principle of a pedometer classification, analyzes the impact of a new generation of pedometer design process performance is a key factor, and after further by selecting the appropriate master control chip and peripheral equipment. In the end, the selected scheme of a series of TMS320VC5509A DSP chip as the core control chip, through a small low power consumption of three-axis accelerometer ADXL345 complete signal conversion and transmission, combining a series of peripheral circuit modules such as power supply, button display module constituted a complete pedometer hardware system. Software on DSP development platform CCS3.1 completed the corresponding hardware initialization, set up level 3 menus, interrupts, and a liquid crystal display with buttons in the way of the establishment of a flexible man-machine interface.
This design has played a DSP powerful function, low power consumption, the advantages of the pedometer circuit structure is compact, simple and easy.It Can Basicly satisfy the users' requirements of small, portable, high precision and high cost performance new pedometer.
Keyword：TMS320VC5509A ADXL345 pedometer
目录
摘 要 I
Abstract II
1 绪 论 1
1.1 研究背景及意义 1
1.2 计步器在国内外的发展概况 2
1.3 计步器的原理及分类 4
1.3.1 单功能2D计步器 5
1.3.2 多功能便携式3D计步器 5
2 计步器总体结构设计 6
2.1 计步器总体设计 6
2.2 2D与3D计步器的对比 6
2.2.1 计步器的精度与质量 6
2.2.2 使用与价格 7
2.2.3 耗材更换 7