Research On Light Environmental Quality Of The Integration For LED Lighting And Building Inside Office Buildings

Traditional office lighting meets the basic needs of indoor light environment by separating lamps from indoor components.With the development of indoor lighting industry,the technical R&D needs and scientific research problems of indoor LED lighting building integration have gradually emerged.The key special project"research and demonstration of key technologies for improving the light environment of public buildings" in the key R&D plan of the 13th five year plan is to focus on solving this problem from the essence of lighting building integration.The research on the integrated light environment quality of indoor LED lighting in office buildings is the basic research part of the R&D plan.According to the weight of the integrated light environment impact factors of office buildings,the two most important evaluation indexes-vertical illuminance and spatial brightness distribution are determined.Through regression analysis,the objective quantitative law of vertical illumination and the subjective quantitative relationship of spatial brightness distribution are obtained respectively.Combined with the multi-objective optimization method,the integrated design strategy of office buildings is formulated to promote the development of office lighting.From the perspective of objective physical data and human subjective evaluation of indoor space of office buildings,this paper explores the influencing factors of light environment quality of integrated lighting space.Through literature review,this paper combs the basic theories of traditional space light environment quality evaluation standards,indoor lighting research hotspots,light environment evaluation research trends and so on.Combined with the indoor space investigation of office buildings,the physical data and spatial information of light environment are obtained,and the typical spatial characteristics based on visual task classification are analyzed.By combing the previous relevant research results,the problems of the team’s existing research results and the research feedback,the direct and indirect influencing factors of the integrated light environment quality of office building lighting are obtained,the weights of each influencing factor are obtained by using the AHP research method,and the two influencing indicators with the highest weight-vertical illumination and spatial brightness distribution are selected.Based on typical indoor office space,use Dialux Evo software simulates the light environment state in different integration forms.Through 164 groups of simulation results of lighting ceiling integration,lighting wall integration and lighting ceiling wall mixing integration in different locations,the vertical illumination at the center of space,vertical illumination near the side,vertical illumination in far side and vertical illumination in the direction of space depth are obtained.Sensitivity analysis and correlation analysis are used to screen out The independent variable with high response degree of influence variable is obtained by means of stepwise regression method,and the quantitative relationship between vertical illuminance and roof integration,the quantitative relationship between vertical illuminance and building wall integration,and the quantitative relationship between vertical illumination and lighting ceiling wall are obtained,which forms a mathematical model.The full-scale model of typical space,full color LED experimental cabin,is established.Based on the subjective satisfaction evaluation results and the synchronous test data of brightness distribution,the subjective evaluation experiment of spatial brightness distribution in the integrated mode of office building interior lighting building is carried out.The two secondary indicators,namely,the spatial luminance distribution coefficient feu and the average luminance average,lmean,are obtained by using sensitivity analysis,correlation analysis and fitting analysis,the function relationship between the spatial luminance distribution coefficient(feu),the average luminance value lmean and subjective satisfaction evaluation is obtained,and the satisfaction evaluation model of spatial brightness distribution is established.Based on the weight results of two important indexes,vertical illumination and spatial brightness distribution,combined with the quantitative model of each index,the total objective function of integrated evaluation of office building lighting building is derived.With the help of multi-objective optimization method and optimization algorithm,the integrated design of office building lighting building is optimized.The optimal index solution set is obtained by programming and calculating the total objective function by MATLAB and python software respectively.Combined with the demonstration project of the integrated design of the newx office building,the process of integrated design of lighting building is formulated,and the optimization strategy of integrated design of office building lighting building is summarized.The research results are combined with indicators to prove the reliability of the research results.This study aims at the integration of office building interior lighting building.Through the research of the evaluation index of light environment quality,the paper puts forward the optimal threshold range for the new integrated indexes such as vertical illumination and spatial brightness distribution.It summarizes the integrated design process and optimization strategy of interior lighting building,and provides important index data reference for lighting designers in the integrated design stage,and points out that Guide lighting design.This paper is of great significance to improve the quality of indoor light environment and promote the development of health lighting.In conclusion,this paper aims to meet the new requirements of the indoor lighting environment of office buildings,and forms a new development direction of LED lighting building integration.