在席状況に基づくオフィス照明調光制御システムの開発

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タイトル別名
  • An Office Lighting Control System based on Employee Entry/Exit State
  • ザイセキ ジョウキョウ ニ モトズク オフィス ショウメイ チョウコウ セイギョ システム ノ カイハツ

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Lighting control systems have been proposed for energy conservation because lighting accounts for not less than 30% of electrical power consumption in a typical office building. Herein, we propose an office-lighting dimming control system based on employee entry and exit from a room. A spot illuminance control method determines the dimming rate that will satisfy every employee's illumination needs. The system adjusts the dimming rate to negate the influence that the spot illuminance control for an employee gives to other employees. These methods offer the illuminance necessary and sufficient only to the sitting employee's area according to the change of employee entry and exit in a room. In order to evaluate proposed method, we produced a lighting control system and applied the proposed method in part of an office building, corresponding to about 300m2. We evaluated the error of measured illuminance compared with the target illuminance after control, and assessed the energy-saving effect. By the results of experimental evaluations, we confirmed that the difference in target illuminance and measurement illuminance is small enough not be able to recognize by employee, the energy-saving effect is 24.3% compared with the wall light switch operation, and the operation speed of proposed method is fast enough for the frequency of employee entry and exit in a room.

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