【摘要】 为解决室内照明调光控制系统中,放置在工作面上的照度传感器易受办公物品、人体活动等遮挡,从而不能使系统准确调光的问题,基于墙面与工作面照度的比例关系模型,提出了室内照度变化传递比的概念以及由墙面设置照度传感器替代工作面照度传感器的方法。该方法的关键是确定当光通量变化时,墙面垂直照度与工作面水平照度间的照度变化传递比。笔者通过仿真和实验手段研究了传感器在墙面上布置时,传感器与被调光源的方位关系对照度变化传递比的影响,得出了适用于办公和阅览场所调光系统照度传递比的两个约束条件。满足该约束条件即可获得室内墙面传感器的有效放置位置及所需数量。通过墙面照度传感器设置方法在教室照明调光控制系统中的应用,证明了该方法的有效性。更多还原

【Abstract】 Office supplies and people may shade illuminance sensors installed on the table,thus the lighting dimming control system is not able to act correctly.Based on the illuminance ratio model,an index of illuminance-variation transfer ratio and an approach using sensors installed on wall instead of table are proposed.The point of this approach is to choose an appropriate illuminance-variation transfer ratio between vertical illuminance on wall and horizontal illuminance on table.The effects of the location of sensor and controlled lighting on the illuminance-variation transfer ratio are investigated by simulations and experiments.Two constraint conditions are presented for determining the location and number of sensors in an office or reading room.As an example,the proposed approach was applied to a lighting dimming control system in classroom,which confirmed the validity of the proposed approach.更多还原