Study On The Public Space Perception And Behavior Of Visually Impaired People

As the number of population grows,the number of people suffering from visual disability is also increasing year by year.2021 National Development and Reform Commission and China Disabled Persons’ Federation jointly issued the14 th Five-Year Plan for the Construction of Provincial Blind Massage Hospitals to provide employment opportunities for the visually disabled group and help them integrate into social life.The currently implemented Accessible Design Code,on the other hand,has almost no other specifications for facilities related to the visually impaired,except for the design standards for blind corridors,and is only scratching the surface in terms of improving the living environment of the visually impaired.The fundamental reason for this is the lack of basic research related to the spatial cognition and behavioral activity characteristics of visually impaired people,and the inability to make deep-level specifications for specific designs.What advantages they have over the sighted and how to make use of these advantages to design a friendly built environment for the visually impaired to help them better integrate into social life are questions that need to be studied in depth.In this paper,we take visually impaired doctors in BA hospital as the research subjects to study their perceptions of empirical familiar public space and the characteristics of their behavioral activities in the space.In the first part,the study of the visually impaired’s cognitive level of empirical public space explores the visually impaired’s grasp of the characteristics of public space by means of a questionnaire,and establishes a regression model of the factors influencing the visually impaired’s spatial cognitive level.In the second part of the study,the wayfinding behavior of visually impaired people in experiential public spaces was studied.The physiological state and physiological changes of visually impaired people during wayfinding were recorded by using advanced ergonomic measurement techniques.The main findings include: 1)Visually impaired persons have better orientation judgment and spatial distance grasping ability than sighted persons in familiar spaces,which indicates that visually impaired persons have better spatial orientation ability than sighted persons in empirical familiar spaces.The orientation and distance perception performance of the congenitally visually impaired was weaker than that of the acquired blind,indicating that prior visual experience contributes to the visually impaired’s perception of space.2)The visual condition of the visually impaired coming to correlate more with walking speed in space.3)The length of time to adapt to space had a greater effect on the walking performance of the visually impaired.4)The walking performance of the visually impaired who used blind paths in the experiment was generally worse.5)The experimental subjects’(6)The complexity of the building space had little effect on the walking speed of the visually impaired,and the human flow factor in the space had a greater effect on the walking speed of the visually impaired.(7)From the monitoring data of the electrical skin signal and the monitoring data of the heart rate variability,it can be seen that the central nerve and sympathetic nerve of the visually impaired in the walking process The overall level of activity was higher than that of the visually impaired persons,and the traffic flow factor had a greater neural stimulation on the visually impaired persons.Compared to the sighted,the visually impaired are more likely to be in a relatively tense and uncomfortable state during walking.8)The typical waveform activity of EEG monitoring may be related to the complexity of the spatial circuitry.This paper features a combination of questionnaires and field experiments to investigate the level of cognition and the ability of wayfinding behaviors of visually impaired people to experience-based familiar space.Previous literature has focused on visually impaired people’s perception of unfamiliar architectural spaces or familiar urban spaces,but no scholar has yet studied visually impaired people’s perception of familiar architectural spaces.However,visually impaired people have spent most of their lives in familiar architectural environments,and there are many inconveniences in using familiar architectural environments,so this part of the study is still important.By combining the spatial cognitive characteristics and behavioral characteristics of visually impaired people,we can summarize the design points of a friendly architectural environment for visually impaired people that have been verified by design.The research in this paper will provide design references for architects.