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The Scientific World Journal
Volume 2014, Article ID 591478, 8 pages
Research Article

An Evaluation and Implementation of Rule-Based Home Energy Management System Using the Rete Algorithm

1Graduate School of Engineering, Kobe University, 1-1 Rokkodai-machi, Nada, Kobe, Hyogo 657-8501, Japan
2Cybermedia Center, Osaka University, 5-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan

Received 5 April 2014; Accepted 22 June 2014; Published 20 July 2014

Academic Editor: Jong-Hyuk Park

Copyright © 2014 Tomoya Kawakami et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In recent years, sensors become popular and Home Energy Management System (HEMS) takes an important role in saving energy without decrease in QoL (Quality of Life). Currently, many rule-based HEMSs have been proposed and almost all of them assume “IF-THEN” rules. The Rete algorithm is a typical pattern matching algorithm for IF-THEN rules. Currently, we have proposed a rule-based Home Energy Management System (HEMS) using the Rete algorithm. In the proposed system, rules for managing energy are processed by smart taps in network, and the loads for processing rules and collecting data are distributed to smart taps. In addition, the number of processes and collecting data are reduced by processing rules based on the Rete algorithm. In this paper, we evaluated the proposed system by simulation. In the simulation environment, rules are processed by a smart tap that relates to the action part of each rule. In addition, we implemented the proposed system as HEMS using smart taps.