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An Implementation of Lighting Control System using Interpretation of Context Conflict based on Priority
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 Title & Authors
An Implementation of Lighting Control System using Interpretation of Context Conflict based on Priority
Seo, Won-Il; Kwon, Sook-Youn; Lim, Jae-Hyun;
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The current smart lighting is shaped to offer the lighting environment suitable for current context, after identifying user`s action and location through a sensor. The sensor-based context awareness technology just considers a single user, and the studies to interpret many users` various context occurrences and conflicts lack. In existing studies, a fuzzy theory and algorithm including ReBa have been used as the methodology to solve context conflict. The fuzzy theory and algorithm including ReBa just avoid an opportunity of context conflict that may occur by providing services by each area, after the spaces where users are located are classified into many areas. Therefore, they actually cannot be regarded as customized service type that can offer personal preference-based context conflict. This paper proposes a priority-based LED lighting control system interpreting multiple context conflicts, which decides services, based on the granted priority according to context type, when service conflict is faced with, due to simultaneous occurrence of various contexts to many users. This study classifies the residential environment into such five areas as living room, `bed room, study room, kitchen and bath room, and the contexts that may occur within each area are defined as 20 contexts such as exercising, doing makeup, reading, dining and entering, targeting several users. The proposed system defines various contexts of users using an ontology-based model and gives service of user oriented lighting environment through rule based on standard and context reasoning engine. To solve the issue of various context conflicts among users in the same space and at the same time point, the context in which user concentration is required is set in the highest priority. Also, visual comfort is offered as the best alternative priority in the case of the same priority. In this manner, they are utilized as the criteria for service selection upon conflict occurrence.
Priority;Context Conflict;Ontology;Lighting System;LED;
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