照明工程学报

2022, v.33(04) 115-122

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图书馆电子阅览室阅读舒适性照明的多目标优化方法
AMulti-objective Optimization Method for Analyzing Lighting Reading Comfort Level in Electronic Reading Rooms in Libraries

冯子龙;王立雄;
FENG Zilong;WANG Lixiong;School of Architecture, Tianjin University,Tianjin Key Laboratory of Architectural Physics and Environmental Technology;Schoolof Architecture and Urban Planning, Beijing University of Civil Engineering and Architecture;

摘要(Abstract):

VDT(Visual Display Terminal)设备已经成为现阶段主流的阅读载体,以图书馆电子阅览室为典型使用空间,照明环境VDT阅读舒适性研究的重要性和紧迫性开始凸显。本文以VDT阅读舒适性为目标,提出图书馆电子阅览室照明的多目标优化方法。优化模型以照度、相关色温、反射系数和VDT屏幕亮度4个影响要素为决策变量,归纳设定为“光源”与“非光源”2个阅读舒适性分目标。针对因主观评价实验数据量有限及影响因素众多且关系复杂所导致的难以获取函数关系式的问题,提出运用插值法、图像法,并借助MATLAB平台,进行多目标优化分析。验证结果表明:1)插值法丰富了主观评价实验数据,解决了因主观评价实验环境有限、光参数设置与被试人数数据量不足的问题;2)建立了阅读舒适性关于任意2个决策变量的双决策变量函数,且能够利用图像法,借助MATLAB平台,将该函数关系图像化,解决了多目标优化过程中复杂函数关系难以表达的问题;3)解析得到4个决策变量的“最优”值,即照度510 lx、相关色温4700 K、反射系数0.11、VDT屏幕亮度180 cd/m2,该方法适用于图书馆电子阅览室照明环境的多目标优化。
VDT(Visual Display Terminal) equipment has become the mainstream reading tool at the present stage. Taking the library electronic reading room as the typical use space, the importance and urgency of VDT reading comfort research in the artificial lighting environment begin to highlight. Aiming at VDT reading comfort, this paper proposes the multi-objective optimization method of artificial lighting in library electronic reading room. According to the influence factors of illumination, relative color temperature, reflection coefficient, and VDT screen brightness, the optimization model is divided into two reading comfort targets: light source and non-light source. Aiming at the problem that it is difficult to obtain the function relation due to the limited amount of subjective evaluation experimental data and the numerous influencing factors with the complex relationship, the method of multi-objective optimization analysis was proposed by using interpolation method and image method, with the help of MATLAB platform. The results show that: 1) the interpolation method enriches the subjective evaluation experimental data, solving the problem of the limitation parameter of lighting and the insufficient number of subjects due to the limited experimental environment of subjective evaluation, 2) a dual-decision variable function of reading comfort for any two decision variables were established, and the function relationship can be visualized by using the image method with the help of MATLAB platform. It solves the problem that complex function relation is difficult to be expressed in multi-objective optimization; 3) The “optimal” values of the four decision variables were obtained through analysis: the illumination was 510 lx, the relevant color temperature was 4700 K, the reflection coefficient was 0.11, the VDT screen brightness was 180 cd/m2,该方法适用于图书馆电子阅览室照明环境的多目标优化。
VDT(Visual Display Terminal) equipment has become the mainstream reading tool at the present stage. Taking the library electronic reading room as the typical use space, the importance and urgency of VDT reading comfort research in the artificial lighting environment begin to highlight. Aiming at VDT reading comfort, this paper proposes the multi-objective optimization method of artificial lighting in library electronic reading room. According to the influence factors of illumination, relative color temperature, reflection coefficient, and VDT screen brightness, the optimization model is divided into two reading comfort targets: light source and non-light source. Aiming at the problem that it is difficult to obtain the function relation due to the limited amount of subjective evaluation experimental data and the numerous influencing factors with the complex relationship, the method of multi-objective optimization analysis was proposed by using interpolation method and image method, with the help of MATLAB platform. The results show that: 1) the interpolation method enriches the subjective evaluation experimental data, solving the problem of the limitation parameter of lighting and the insufficient number of subjects due to the limited experimental environment of subjective evaluation, 2) a dual-decision variable function of reading comfort for any two decision variables were established, and the function relationship can be visualized by using the image method with the help of MATLAB platform. It solves the problem that complex function relation is difficult to be expressed in multi-objective optimization; 3) The “optimal” values of the four decision variables were obtained through analysis: the illumination was 510 lx, the relevant color temperature was 4700 K, the reflection coefficient was 0.11, the VDT screen brightness was 180 cd/m2. This method is suitable for the multi-objective optimization of artificial lighting environment in library electronic reading room.

关键词(KeyWords): 阅读舒适性;多目标优化;插值法;计算机模拟
reading comfort level;multi-objective optimization;interpolation;computer simulation

Abstract:

Keywords:

基金项目(Foundation): “十三五”国家重点研发计划(2018YFC0705100);; 国家自然科学基金(51678399);; 北京建筑大学青年教师科研能力提升计划(X22013)

作者(Authors): 冯子龙;王立雄;
FENG Zilong;WANG Lixiong;School of Architecture, Tianjin University,Tianjin Key Laboratory of Architectural Physics and Environmental Technology;Schoolof Architecture and Urban Planning, Beijing University of Civil Engineering and Architecture;

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