• Title/Summary/Keyword: 손목

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Development of Wrist Type Ubiquitous Optical Sensor (손목형 유비쿼터스 광센서의 개발)

  • Hwang, Dae-Seok;Lee, Young-Woo
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2008.10a
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    • pp.129-132
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    • 2008
  • 손목에 착용하여 맥파와 산소포화도 등의 정보를 측정할 수 있는 유비쿼터스 광센서를 개발하였다. 유비쿼터스 광센서의 SNR의 향상을 위해 660nm의 LD와 904nm의 LD를 사용하였으며, 2종류의 LD는 각각 PD를 중심으로 $120^{\circ}$로 배치하였다. 또한 정확한 신호의 측정 및 분석을 위해 LabVIEW를 사용하였다. 제작된 광센서는 정확한 맥박 및 산소포화도의 측정이 가능하였으며 Beer-Lambert 곡선과 부합하여, 구성 및 설계가 정확함을 알 수 있다.

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A Comparative Analysis of Bilateral Hand Movement Using Accelerometer : A Pilot Study (가속도계를 이용한 양손 움직임 비교분석: 예비연구)

  • Lee, Joo-Hyun;Yang, No-Yul
    • Therapeutic Science for Rehabilitation
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    • v.2 no.2
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    • pp.61-66
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    • 2013
  • Objective : The purpose of this study was to analysis of disparity between bilateral hand movement when performing activity of daily living using accelerometer. Methods : The subjects of this study included 6 healthy adults. The assessment tool used Jebsen Hand Function Test and accelerometer. The subjects performed 7 sub-tests after wearing accelerometer around wrist. Results : Among sub-tests, writing was the only significantly correlated with difference between dominant and non-dominant hand(t=-2.394, p<.05). Further, non-dominant hand (M=2476.2, SD=802.2) showed more movement than dominant hand(M=1456.2, SD=667.6). Conclusion : This results indicated that accelerometer is useful tool for assessment of bilateral hand movement. Considering demographic characteristics, various subject group, further study is needed.