Experimental Research On Light Environment Of Elderly Residence Based On Virtual Reality Technology

At present,China is facing a severe problem of population aging.With the outbreak of COVID-19,more elderly people adopt the "home care" mode of life.However,the embodiment of the suitability of the elderly housing can not keep up with the development of society,especially the design of light environment in the elderly housing.One of the importance of light environment is that it can directly affect people’s physical and mental health.In order to make the light environment play a positive role in the physical and mental health of the elderly,this paper focuses on exploring the light environment that really meets the behavioral needs of the elderly and the real love of the elderly,supplemented by the concept of green lighting,so as to provide the elderly with a scientific and reasonable residential light environment that meets the needs of the times.In the first chapter,from the perspective of research background and research status at home and abroad,this paper expounds the necessity of the research on the light environment of elderly housing,and establishes the experimental research method of virtual reality.The second chapter analyzes the significance of the light environment from the physiological and psychological characteristics and behavioral needs of the elderly,and summarizes the requirements related to the light environment of the elderly residence in the existing design specifications.The third chapter selects a certain universal elderly housing sample for in-depth investigation and interview,summarizes and analyzes the evaluation and use opinions of the elderly on the light environment,and obtains the problems existing in the light environment of the elderly housing.In Chapter 4,the visual simulation of the light environment is carried out through VR technology.10 young self-care elderly people are selected as volunteers,divided into men and women.The light environment experiments with different parameters are carried out on the different behaviors in all spaces of the elderly residence,and the experiments are carried out from the four aspects of overall satisfaction,brightness,light color and glare.The optimal light environment models of day and night light environment for various spaces and behaviors are preliminarily summarized.The light environment selection experiment of the transition space between the functional spaces is carried out,and the recommended illuminance and color temperature of each space is obtained by synthesizing the best light environment parameters of a single space.Based on the research conclusions and experimental data,the fifth chapter summarizes the light environment design methods of elderly houses and the final recommended values of illuminance and color temperature of various behaviors in various spaces from the aspects of green lighting,intelligent lighting and circadian rhythm.Based on the characteristics of the elderly,the norms of the light environment of the elderly residence,the sample field investigation,the questions obtained from the interview,the experiment is designed and the data are deeply analyzed.The relationship between the impact of each space of the elderly residence on the physical and mental health of the elderly and the behavior mode is mainly studied,and the optimal design parameters of the light environment of the elderly residence are obtained.Through the experiment of virtual reality technology,this paper proves that the elderly feel the light environment basically the same in the virtual world and the real world,and the subjective evaluation in the virtual world is real and effective.It provides a new experimental method,supplements some data for subsequent relevant research,and obtains the universal recommended value of light environment combined with green lighting,which can not only guide practice,but also promote the revision of the architectural design code of national elderly care facilities,which has great practical and social significance.