The Transactions of the Korean Institute of Electrical Engineers D (대한전기학회논문지:시스템및제어부문D)

The Korean Institute of Electrical Engineers (대한전기학회)
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Modeling of Normal Gait Acceleration Signal Using a Time Series Analysis Method

시계열 분석을 이용한 정상인의 보행 가속도 신호의 모델링

  • 임예택 (연세대 보건과학대 의공학과) ;
  • 이경중 (연세대 보건과학대 의공학과) ;
  • 하은호 (연세대 문리대 정보통계학과) ;
  • 김한성 (연세대 보건과학대 의공학과)
  • Published : 2005.07.01
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Abstract

In this paper, we analyzed normal gait acceleration signal by time series analysis methods. Accelerations were measured during walking using a biaxial accelerometer. Acceleration data were acquired from normal subjects(23 men and one woman) walking on a level corridor of 20m in length with three different walking speeds. Acceleration signals were measured at a sampling frequency of 60Hz from a biaxial accelerometer mounted between L3 and L4 intervertebral area. Each step signal was analyzed using Box-Jenkins method. Most of the differenced normal step signals were modeled to AR(3) and the model didn't show difference for model's orders and coefficients with walking speed. But, tile model showed difference with acceleration signal direction - vertical and lateral. The above results suggested the proposed model could be applied to unit analysis.

Keywords

References

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