摘要
计步器可以帮助人们实时掌握锻炼情况,它通过检测人体行走步数和步幅可计算出行走的路程。为了提高计步器的准确性,借助MATLAB仿真工具,充分利用加速度传感器(ADXL330)输出的三轴加速度信号,经分别处理后,利用基于信号能量自适应门限来检测加速度信号的峰值个数,从而准确地计算出人体行走的步数。最后,对年轻人与老年人行走数据进行采集,通过文中方法与传统方法处理后进行对比。实验结果表明,相对于传统方法,基于信号能量自适应门限检测方法具有更好的性能,能有效地提高计步器的准确度。
Pedometer can help people grasp the exercise in real time, through the detection of human walking and running to calculate the distance. In order to improve the accuracy of pedometer,the paper, with the help of MATLAB simulation tools, take advantage of the acceleration sensor （ADXL330） axis output signals and the signal energy-based adaptive threshold to detect the number of peak for acceleration signal, in order to accurately calculate the number of steps of human walking. In the end, the young and the elderly walking data collected, the proposed method and traditional methods were compared after treatment. The experimental results show that compared with traditional method, based on signal energy adaptive threshold detection method has better performance, can effectively improve the accuracy of a pedometer.
出处
《系统仿真技术》
2011年第2期152-155,共4页
System Simulation Technology
