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基于加速度量测幅值零速检测的计步算法研究
Step Counting Algorithm Based on Zero Velocity Update

DOI: 10.13203/j.whugis20150400

Keywords: 计步,零速检测,MEMS,加速度量测幅值,
step counting
,zero-velocity update,MEMS,acceleration amplitude measurement

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Abstract:

准确的步数统计是进行人员航位推算的关键,通过分析行人运动模型及步行姿态,设计了一种基于零速检测的加速度量测幅值计步算法,实现了载体坐标系和行人地理坐标系的转换,剔除了伪零速现象,在室内模拟环境下采用低成本的微机电机械系统(micro electro mechanical system,MEMS)惯性测量元件对人员行走进行检测,实现了行人运动姿态的有效识别和步数的精确统计。实验结果表明,该计步方法准确性高,对不同的运动环境(走廊、拐角和楼梯)具有良好的适应性,计步正确率均达到98%以上,并且所用的测量元件功耗低,便于携带,适合室内复杂环境

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