• Title/Summary/Keyword: 족적 센서

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Selection and Verification of 3D Finite Element Method Model for Silicone Foot Sensor with Low Detection Pressure (낮은 감지 압력신호 값을 가지는 실리콘 족적 센서에 대한 3차원 유한요소 해석 모델 선정 및 검증)

  • Seong, Byuck Kyung;Seo, Hyung Kyu;Kim, Dong Hwan
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.38 no.11
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    • pp.1299-1307
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    • 2014
  • In this work, an appropriate analysis model of a precise foot sensor with low detection pressure capability under a low range of variation in the dimensional variables was proposed. With a simple two-dimensional model, it was found that a remarkably high error level sometimes occurred between the analysis and experimental results. In order to overcome the error and improve the performance, a three-dimensional model was introduced, and the detection pressure and sensor characteristics were compared with those of the experimental results, which showed its enhanced performance with less error and higher precision.

Sensitivity Control and Design of the Silicone Foot Sensor Using FEM (유한요소 해석을 통한 실리콘 족적 센서의 감도 조절 및 설계)

  • Seong, Byuck Kyung;Seo, Hyung Kyu;Lee, Jin Wook;Kwon, Ae-Ran;Kim, Dong Hwan
    • Journal of the Korean Society for Precision Engineering
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    • v.31 no.11
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    • pp.1041-1050
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    • 2014
  • A design and analysis for new foot sensor that measures pressure distribution while walking or running in daily life is introduced. In the process of the sensor design, the shape, mechanism composing of the sensor, and variables that dominate sensor's sensitivity are investigated. Through these variables analysis, an optimal shape and dimension were determined. The effects of variables on sensor's sensitivity and the relationship between each variable are proved by analyses and experiments.

Local Grid-based Multipath Routing Protocol for Mobile Sink in Wireless Sensor Networks (무선 센서 네트워크에서 이동 싱크를 지원하기 위한 지역적 격자 기반 다중 경로 전송 방안)

  • Yang, Taehun;Kim, Sangdae;Cho, Hyunchong;Kim, Cheonyong;Kim, Sang-Ha
    • Journal of KIISE
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    • v.43 no.12
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    • pp.1428-1436
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    • 2016
  • A multipath routing in wireless sensor networks (WSNs) provides advantage such as reliability improvement and load balancing by transmitting data through divided paths. For these reasons, existing multipath routing protocols divide path appropriately or create independent paths efficiently. However, when the sink node moves to avoid hotspot problem or satisfy the requirement of the applications, the existing protocols have to reconstruct multipath or exploit foot-print chaining mechanism. As a result, the existing protocols will shorten the lifetime of a network due to excessive energy consumption, and lose the advantage of multipath routing due to the merging of paths. To solve this problem, we propose a multipath creation and maintenance scheme to support the mobile sink node. The proposed protocol can be used to construct local grid structure with restricted area and exploit grid structure for constructing the multipath. The grid structure can also be extended depending on the movement of the sink node. In addition, the multipath can be partially reconstructed to prevent merging paths. Simulation results show that the proposed protocol is superior to the existing protocols in terms of energy efficiency and packet delivery ratio.