腕式运动计步器的加速度信号获取与处理

Acceleration Signal Acquisition and Processing of Wrist Sport Pedometer

为了研究了人体的运动方式,将人体运动分为前向、侧向和竖向3个方向,构建了人体运动的数学模型。该模型采用腕式运动计步器的加速度信号采集方式进行采样,提出了手腕上所采集3个方向加速度信号的信号分析方法和3个方向的加速度信号"合三为一"的处理方式。通过腕式运动计步器的计步精确度测试验证,证明了所设计的计步器加速度信号获取与处理的方法正确,可以使计步器达到了精度要求。

In order to study the way of human motion, the human motion is divided into three directions: forward, lateral and vertical. A mathematical model of human motion is constructed. The acceleration signal acquisition method of wrist kinemometer pedometer is used for sampling test. The signal analysis method of three directions acceleration signal acquisition on wrist and the acceleration signal of three directions is put forward. The methods of acquisition and processing of acceleration signal of the wrist-type kinematic pedometer are proved by the accuracy test of the pedometer. The design can make the pedometer meet the accuracy requirement.