基于阈值辨别技术的普通行人用计步器设计研究
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摘要
计步器作为一种可穿戴式的智能化跟踪设备,在实现计步功能的同时,提升了运动的趣味性。基于阈值辨别的技术,设计了一款普通行人用计步器原理样机,实现了普通行人行走计步的功能。该计步器原理样机由三轴加速度计ADXL345模块、LCD液晶显示模块以及单片机模块等组成。单片机控制ADXL345采集行人行走时三个轴向的加速度信息,通过阈值辨别技术实现行人行走时的计步功能。试验研究首先针对阈值辨别技术进行了阈值测试,然后在步行条件下进行了计步测试。测试结果表明,该设计能够实现普通行人行走时计步的功能,但存在计步误差。该误差主要源于行走计步时的阈值设定。今后将针对计步器系统中的阈值辨别技术开展深入研究,从而提高计步器系统的计步精度。
Pedometer,as a wearable intelligent tracking device,makes the sports more enjoyable while implementing the step counting function. Based on the threshold recognition technology,a principle prototype of pedometer is designed for pedestrians,which realizes the step counting function. The principle prototype is mainly composed of a three-axel acceleration device ADXL345,a LCD module and a single chip computer. The single chip computer controls ADXL345 to collect three-axel acceleration data to realize the step counting function based on the threshold recognition technology. The experimental study firstly carries out threshold tests in accordance with the threshold recognition technology,and then conducts the step counting tests under the walking condition. The testing results show that the design can realize the step counting function for pedestrians,but it has some counting errors. The errors mainly come from the threshold setting. In future,the study will be done in-depth for threshold recognition technology applied in the step counting system to improve precision of step counting.
Pedometer,as a wearable intelligent tracking device,makes the sports more enjoyable while implementing the step counting function. Based on the threshold recognition technology,a principle prototype of pedometer is designed for pedestrians,which realizes the step counting function. The principle prototype is mainly composed of a three-axel acceleration device ADXL345,a LCD module and a single chip computer. The single chip computer controls ADXL345 to collect three-axel acceleration data to realize the step counting function based on the threshold recognition technology. The experimental study firstly carries out threshold tests in accordance with the threshold recognition technology,and then conducts the step counting tests under the walking condition. The testing results show that the design can realize the step counting function for pedestrians,but it has some counting errors. The errors mainly come from the threshold setting. In future,the study will be done in-depth for threshold recognition technology applied in the step counting system to improve precision of step counting.
引文
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[3]陈光毅.人体健康指标实时监测系统[D].哈尔滨:哈尔滨理工大学,2017.
[4] GAO Z,ZHANG T,STODDEN D. Children's physical activity levels and psychological correlates in interactive dance versus aerobic dance[J]. Journal of Sport and Health Science,2013,2(3):146-151.
[5]蒋晓新.计步器在荷斯坦奶牛群体生理健康水平监测中的应用[D].乌鲁木齐:新疆农业大学,2016.
[6]蔡雪.计步器干预对2型糖尿病患者运动量、久坐时间以及体重的影响[D].南京:东南大学,2016.
[7]尤嘉宁,俞静,谷文林.利用智能手机三轴加速计实现计步器应用软件及商用价值[J].电子设计工程,2016,24(6):85-88.
[8]吴志强,印娟,朱欣华. MEMS加速度计嵌入式批量自动化测试系统设计[J].自动化仪表,2015,36(9):77.
[9]顾睿风,苏岩,朱欣华.微型惯性测量组合数据采集系统[J].自动化仪表,2011,32(2):69-73.
[10]栾禄祥.室内移动机器人机器视觉定位系统的设计[J].自动化仪表,2017,38(2):49-52.
[11]王睿,郭阳宽,郭会梁,等.基于高速图像采集的全角度跌落控制方法研究[J].自动化仪表,2018(3):16-17.
[12]姜金华,陈永良.基于PID算法的二自由度自调节测高系统设计[J].自动化仪表,2017,38(12):9-12.