Research On The Design Of Vehicle Oriented Products For Visually Impaired Users Based On Human-machine Cooperation

Visual impairment restricts people’s ability to move to a certain extent,which has a profound impact on the career choice and daily life of the visually impaired.Vehicles are a tool that can improve the range of people’s activities and travel efficiency.This topic attempts to propose a guided assist product for the visually impaired to drive vehicles.The goal is to assist the visually impaired to use vehicles to improve their mobility.It has a beneficial impact on its physical and mental health,social relations,etc.The topic explores the possibility of visually impaired people driving mobility tools under auxiliary equipment,and makes forward-looking design research for future product design for assisting visually impaired people.Through the analysis of related researches on vehicles for the visually impaired,it is found that the behavior of the visually impaired in driving vehicles is more common in European countries.Researchers from many countries have conducted research on this behavior and believe that the use of vehicles can increase their own activities by the visually impaired.Scope,improve life efficiency,enhance interpersonal relationships,and have a positive effect on the physical and mental development of the visually impaired.In order to improve the safety of driving vehicles for the visually impaired,the factors that affect the use of vehicles for the visually impaired are analyzed,and it is found that weather conditions,road conditions,infrastructure,and traffic conditions are the four environmental factors that have the greatest impact on the behavior of drivers;The individual’s field of vision,other sensory conditions,driving skills,and personal background are the most influential personal factors.Through the research on the related design of the transportation for the visually impaired,the design characteristics of this type of product are analyzed,and it is pointed out that the vibration-tactile interaction method has an impact on the user’s normal perception of vehicle performance,and each vibration command cannot convey information in real time,which leads to user identification.The limitations of the error.Based on the literature analysis and research results,a guidance assist product based on the continuous sliding tactile interaction method is proposed to assist users in realizing the set path following in travel scenarios.The product can be used in multiple scenarios of walking and using mobility vehicles.In this research,through the iterative method of unit experiments,the best available version in the research process of the structural design of the experimental prototype bracelet and belt is obtained.The design of the bracelet adopts the transmission scheme of the crank of the sandwich track steering gear,and the design of the belt adopts the steering gear.The transmission scheme of the rope-coil spring structure.And using the experimental prototype to carry out the indoor simulation walking test and outdoor simulation easing test of the proposed sliding scheme,the experimental data was analyzed quantitatively and qualitatively.The average difference and variance values of the measured results in the simulated walking experiment are obtained.The data confirms the effectiveness of the continuous sliding tactile interaction method in the unit experiment,and obtains the different result characteristics of the two experimental prototypes.The prototype belt prototype is more accurate in multiple experimental scenarios,while the prototype bracelet feels better in terms of user experience.The conclusions of this topic also provide certain design ideas and design references for the visually impaired in the auxiliary design of using mobility vehicles.