摘要
分析人体行走的特点,设计了一种基于数字三轴加速度传感器与FPGA嵌入式处理器的自适应计步器.该系统包括步态信号采集、处理、显示、电源4个部分,利用步态信号周期性与单调性对其计数.数字三轴加速度传感器MMA8451采集步态信号,Stratix 10采用LMS自适应滤波算法对传感器输出数字步态信号进行平滑滤波与降噪处理,TFT液晶显示器显示当前行走步数.实验结果表明:该系统工作稳定、输出数据精度高,计数结果与人体运动状态、环境等因素无关,能精确完成人体行走步态信号采集与计数.
Analyzing the characteristics of the human body to walk,Design a three axial acceleration sensor and the FPGA embedded processor based on digital human adaptive pedometer system includes gait signal acquisition,processing,display,power four parts,using periodic gait signal and monotonicity counting.Digital MMA8451 acquisition gait triaxial acceleration sensor,Stratix 10 the LMS adaptive filtering algorithm is adopted to sensor output digital gait signal smoothing filtering and noise reduction processing,TFT LCD displays the current steps to walk.Experiment results that the system work is stable,the output data of high precision,counting result has nothing to do with human movement state,environmental factors,such as,accurate complete human walking gait signal acquisition and counting.
出处
《东北师大学报（自然科学版）》
CAS
CSCD
北大核心
2016年第3期79-83,共5页
Journal of Northeast Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(61373163)
四川省应用基础项目(2014JY0005)
四川省科技发展计划项目(2014GZ0013)
