The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Development of fall Detection System by Estimating the Amount of Impact and the Status of Torso Posture of the Elderly

노인 낙상 후 충격량 측정 및 기립여부 판단 시스템 구현

  • 김충현 (한국과학기술연구원(KIST) 의공학 연구소 바이오닉스연구단) ;
  • 이영재 (건국대학교 의료생명대학 의학공학부) ;
  • 이필재 (건국대학교 의료생명대학 의학공학과) ;
  • 이정환 (건국대학교 의료생명대학 의학공학부, 건국대 의공학 실용 기술 연구소)
  • Received : 2011.05.06
  • Accepted : 2011.05.19
  • Published : 2011.06.01
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Abstract

In this study, we proposed the system that calculates the algorithm with an accelerometer signal and detects the fall shock and it's direction. In order to gather the activity patterns of fall status and attach on the subject's body without consciousness, the device needs to be small. With this aim, it is attached on the right side of subject's waist. With roll and pitch angle which represent the activity of upper body, the fall situation is determined and classified into the posture pattern. The impact is calculated by the vector magnitude of accelerometer signal. And in the case of the elderly keep the same posture after fall, it can distinguish the situation whether they can stand by themselves or not. Our experimental results showed that 95% successful detection rate of fall activity with 10 subjects. For further improvement of our system, it is necessary to include tasks-oriented classifying algorithm to diverse fall conditions.

Keywords

References

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