iPhone 加速度计确定运动 [英] IPhone Accelerometer Determine Motion

问题描述

使用加速度计输出，我如何确定用户(装在腰部的 iphone)是否在走路?

Using the accelerometer output, how do I determine if the user (iphone mounted on waist) is walking?

正在寻找一种好的算法来确定用户是否在步行，以确定活动转换——站立到步行或步行到站立.

Looking for a good algorithm to determine if the user is walking to determine activity transitions- standing-to-walking or walking-to-standing.

请帮忙.

感谢您的宝贵时间.

推荐答案

对于之前的一个项目，我尝试计算加速度矢量的大小，并且只设置了大约 2g 的阈值，并且在测试中效果很好.典型的(硬件)计步器会忽略相隔超过一秒的单次震动，这似乎是过滤掉不是走路"的偶然运动的好方法.

For a previous project, I tried calculating the magnitude of the acceleration vector, and just setting a threshold of about 2g, and that worked pretty well in testing. A typical (hardware) pedometer will ignore single jolts that happen more than about a second apart, which seems like a good way to filter out occasional movement that isn't "walking".

此外，您可以通过检查一段时间的数据来自动调整阈值.

Additionally, you could automatically adjust the threshold by examining the data for a while.

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