Study On The Evaluation Of LED Media Facade Light Environment In The Central Commercial District

This paper is supported by The Project(CXTDX201601005)supported by funds for innovation team building,Chongqing Municipal Education Commission.The media facade is redefining both the relationship between lighting and architecture and our lives.In today's social background of digital technology going to mature gradually,electronics LED technology led display media facade in the rapid development of city commercial center,as an important element of the city night landscape,how to evaluate LED media facades in the light environment has been a hot academic research.But there was no appropriate standard to make a clear description,some domestic scholars mainly from the technical aspects of qualitative research and explore the light environment of LED media facade,few scholars have combined the comprehensive evaluation of visual psychology principle LED media facade lighting environment.This paper is mainly based on the technical level and the research on the visual psychological evaluation of the light environment,so as to explore the reasonable development of the light environment of LED media.This paper first describes the research background and the existing problems of the LED media facade,from the perspective of visual psychology combined with the technical aspects of the study of the urban commercial center area LED media facade environment evaluation.Taking into account the actual research work and time factors on environment in Chongqing city based information and commercial center selected after the Guanyin Bridge business district,Monument for Liberation business district,Shapingba Three Gorges Plaza three central business district as a key research area,and according to a certain principle to select LED media facade,and then through participation in the survey,questionnaire investigation and statistics field measurement methods,combined with the subjective and objective analysis of the current situation of the central business district of LED City facade media evaluation model,finally using LED media facade light environment evaluation based on fuzzy mathematics.This paper mainly consists of the following five parts:The first part is the introduction(the first chapter): Based on the discussion of the background of research object,In view of the existing problems of the LED media in the city and related research at home and abroad,this paper puts forward the research content,the purpose and significance of the study,as well as the research methods.The second part is the basic theory research(the second chapter),Firstly,defining the research object,then researching the influence factors of LED media facade light environment and on human visual psychology principle,last the evaluation methods are analyzed and selected fuzzy evaluation method to establish the mathematical evaluation model.The third part is the research part(the third chapter),This part is to select the LED media facade as the research object,the first is measurement of related data,and then investigating its environmental factors important degree and human visual and psychological satisfaction by participating in the survey and questionnaire,and last the influence factors of subjective evaluation are discussed.The fourth part is the establishment of the evaluation model(the fourth chapter),Combining with the third chapter LED media facade research results,determining the evaluation index of LED media facade light environment in Central Commercial District through the method of target analysis and Delphy,then using the AHP to determine the weights of evaluation indexes,finally using fuzzy evaluation method to make a comprehensive evaluation,and quantify the qualitative indicators,according to the evaluation results,put forward suggestions and measures.The fifth part of the research conclusions and prospects(the fifth chapter),mainly about summing up the research results of the evaluation of the LED media facade lighting environment in the central commercial district,and summarizes the contents of the article and the research needs.