The fixed and long-term activity of office space users requires that the office space should provide users with a healthy light environment,such as improving users'alertness and attention and reducing users'fatigue,so as to improve users'work efficiency and comfort. Existing studies have shown that color temperature and illumination have a great impact on the human central nervous system. By regulating color temperature and illumination,brain stimulation can be improved and brain fatigue can be alleviated. In the indoor light environment where natural light is introduced,illuminance and color distribution are affected by both lighting and natural light,presenting a complex coupling relationship. At present,the control of indoor illumination and ambient light color is separated in most of the control of indoor light environment. Therefore,in the dynamic light environment of office space,the natural light and indoor LED light source entering the room at any time are defined as"mixed light source",and the color temperature of"mixed light source"is"visual color temperature". Based on this,the indoor healthy light environment control model is proposed. That is,by controlling the luminous flux and color temperature of natural lighting and LED lamps,in the light environment of mixed lighting of natural light and artificial light,the working face can meet the illumination uniformity,and at the same time,the mixed vision color temperature can be adjusted and has good uniformity.%办公空间使用者活动的固定性和长期性要求办公空间能够为使用者提供健康的光环境.研究表明,色温和照度对人中枢神经系统有极大的影响,通过调节色温和照度可以提高大脑兴奋缓解大脑疲劳.引入天然光的室内光环境中,照度和光色分布受到照明灯具和天然光的双重影响,呈现一种复杂耦合关系.目前大部分室内光环境的控制中室内照度和环境光色的控制是分离的.针对办公空间的动态光环境,定义任意时刻进入室内的天然光和室内LED 光源为"混合光源",此时"混合光源"的色温为"视色温".基于此,提出了室内健康光环境控制模型,即通过控制天然采光与LED 灯具输出的光通量和色温,在天然光与人工照明混合照明的光环境中,实现工作面满足照度均匀度的同时,混合视色温可调且有较好的均匀性.
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