Journal of the Korea Society of Computer and Information (한국컴퓨터정보학회논문지)

Korean Society of Computer Information (한국컴퓨터정보학회)
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Table-based Effective Estimation of Residual Energy for Battery-based Wireless Sensor System

배터리기반 무선 센서시스템을 위한 테이블기반 잔여 에너지양 추정기법

  • Kim, Jae-Ung (School of Electronic Engineering, Soongsil University) ;
  • Noh, Dong-Kun (School of Electronic Engineering, Soongsil University)
  • 김재웅 (숭실대학교 전자공학과) ;
  • 노동건 (숭실대학교 정보통신전자공학부)
  • Received : 2014.04.22
  • Accepted : 2014.08.16
  • Published : 2014.09.30
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Abstract

Up to date, numerous studies on wireless sensor networks have been performed to overcome the Energy-Constraint of the sensor system. Existing schemes for estimating the residual energy have considered only voltage of sensor system. However battery performance in the real is affected by temperature and load. In this paper we introduce more accurate scheme, for the use in wireless sensor node, based on the interpolation of lookup tables which allow for temperature and load characteristics, as well as battery voltage.

무선센서네트워크(WSNs)에서 센서시스템의 한정된 에너지를 극복하기 위한 연구들이 활발하게 진행되고 있다. 이들은 대부분에너지 적응형(Energy-aware) 기법들이 많은데, 이 기법들은 노드 자신 또는 이웃노드들의 에너지양을 활용하고 있다. 그러나 기존의 센서시스템에서는 전압과 소모전류만을 가지고 잔여에너지양을 예측하고 있는데, 실제 배터리의 잔여에너지양은 온도와 로드(Load)의 영향을 많이 받기 때문에 정확하지 못할 수 있다. 본 연구에서는 배터리의 전압과 함께 배터리의 온도와 부하 특성을 반영한 효율적인 잔여에너지양 추정기법을 제안한다. 제안한 기법은 실제 환경에서의 실험과 시뮬레이션을 통해 그 성능을 검증하였다.

Keywords

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