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

Korean Society of Computer Information (한국컴퓨터정보학회)
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Analysis of Utility Metering Data for Estimation of User Abnormal Life Status

사용자 비정상 생활상태 추정을 위한 유틸리티 검침 데이터 분석

  • Received : 2011.03.15
  • Accepted : 2011.05.28
  • Published : 2011.08.31
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Abstract

In this paper, we analyzed the function elements of the Integrated meter reading system based on PLC which is working in Mok-dong, Seoul and studied how to improve the vulnerability. Also we propose an efficient method for the estimation of abnormal life status through frequency domain processing of utility meter readings. We found out that even after removing the high-frequency components from the raw meter data, the shape of the graph still maintains the original graph characteristics. The graph of the inverse transformed data has simpler and smoother curve than the original graph pattern. The original graph is not good to be used in deciding whether the residence's life pattern is normal or not. We could find out that the graph which is processed frequency signal has simple and intuitive graph pattern.

본 논문에서는 서울 목동에 운영 중인 PLC기반 통합원격검침시스템의 기능 요소별 역할을 분석하고 취약한 부분에 대해서는 개선 항목을 제시하였으며 수집된 에너지 사용량인 검침 데이터를 분석하여 사용자의 비정상적인 생활을 추정할 수 있는 방법을 연구하였다. 검침 데이터의 고주파 성분을 제거한 후 원본 그래프와 비교하여 변환 전의 데이터 그래프특성을 보유하고 있는지 확인하였다. 시험 결과 전체 주파수 대역이 포함된 원본 데이터 그래프에 비해서 저주파 대역만 선택하여 역변환 처리과정을 거친 그래프가 원본 데이터의 그래프 특성을 유지하면서 단순하고 매끄러운 곡선 형태를 가지고 있었다. 이 특성을 다르게 해석하면 변환 전 검침 데이터 특성 그래프는 시간영역의 순시유틸리티 사용량의 평균치 데이터로 비정상적인 소비상태를 결정하기에 부적합한 형태였지만, 주파수처리를 거친 신호는 유틸리티의 소비상태를 단순하면서 직관적인 판단이 가능한 형태를 가지고 있음을 확인할 수 있었다.

Keywords

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