우선순위 기반의 상황충돌 해석 조명제어시스템 구현

Abstract

ABSTRACT The current smart lighting is shaped to offer the lighting envi ronment suitable for current context, after identifying user’s action and location through a sensor. The sensor-based context awareness t echnology just considers a single user, and the studies to inte rpret many users’ various context occurrences and conflicts lack. In existing studies, a fuzzy theory and algorithm including ReBa h ave been used as the methodology to solve context conflict. The fuzzy th eory 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 servi ce type that can offer personal preference-based context conflict. This paper proposes a priority-based LED lighting control system int erpreting multiple context conflicts, which decides services, b ased on the granted priority according to context type, when service confli ct is faced with, due to simultaneous occurrence of various con texts 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 rul e 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 i s offered as the best alternative priority in the case of the same priority. In this manner, they are utilized as the criteria for service sele ction upon conflict occurrence.