Study On Non-visual Effect Evaluation Tool Of Daylight Based On GH Platform

Daylight not only has visual effect,but also acts on human physiological rhythm through non-visual effect.In recent years,studies have shown that the non-visual effects of light can affect a series of physiological processes,such as clock phase shift,hormone secretion and inhibition,and core temperature changes,which are of great significance for maintaining and improving human health.Non-visual effects are different from visual effects in spectral distribution and influencing factors.Current lighting simulation software is not suitable for non-visual effects evaluation.In recent years,many scholars at home and abroad have been devoting themselves to the research of non-visual evaluation model.However,due to the non-visual evaluation method has just started,the existing evaluation model lacks the tools to connect with CAAD software,and is less able to integrate with architectural design.Rhino+GH has strong modeling ability and visual programming ability,so it is favored by the majority of architectural designers.This study attempts to link the latest research results of the current international non-visual evaluation model with Rhino+GH,compiles a set of non-visual effect evaluation tools on GH Platform using VB.net script editor,and constructs a simulation analysis workflow combining with the existing lighting plug-ins.The evaluation tool consists of five VB components,which can be used to calculate non-visual illumination,stimulus frequency and percentage of effective rhythm areas.The workflow is divided into three modules:meteorological data processing,lighting simulation calculation and visualization analysis.With the help of lighting plug-ins,the annual dynamic daylight simulation is carried out,and the data processing and visualization expression are carried out through evaluation tool components.Taking a classroom of a senior middle school in Nanjing as an example,this study uses evaluation tools and workflow to simulate and evaluate the non-visual effects of daylight in the whole year on the basis of field measurement,and compares the non-visual effects of different lighting design factors on the daylight environment of the classroom.Based on this,the advantages and disadvantages of the evaluation tool and workflow are summarized,and some optimizations are put forward.Suggestion.Through the development of non-visual effect evaluation tool of daylight on GH platform,this study can make the non-visual evaluation of daylight environment more simple and convenient,and help to promote more designers to pay attention to the healthy lighting design of architectural space.It is also of positive significance to create a more comfortable light environment,so as to improve the work efficiency and both physical and mental health of users.