The Usability Design Research Of Interface Icons In In-Vehicle Infotainment System

The design of In-Vehicle Infotainment system must enable the driver to identify and operate quickly and efficiently in order to improve the efficiency of driving.As an important factor of human-computer communication,icon can promote the efficiency of safe driving by communicating interface information,simplifying interaction steps,improving recognition efficiency,beautifying interface layout and improving user experience.It has very important theoretical and practical value to study the usability of vehicle interface icon.The purpose of this paper is to study the usability design of interface icon in In-Vehicle Infotainment system based on the theoretical basis of usability and the research of existing scholars.Firstly,summarize the usability theory and methods which can be the theoretical direction of the whole research content.Secondly,collect the icon research methods of related fields which can be theoretical reference.Thirdly,collect experimental data through eye movement experiment,user interview and questionnaire survey.In order to get the users’ cognitive habits of icons and operational efficiency in specific tasks,qualitative analysis and quantitative analysis were used to analyze the experimental data.The purpose of this paper is to propose the usability design guidance of In-Vehicle Infotainment system interface icons.It mainly includes three parts.The first part is usability study of individual icon in vehicle interface,filter the final usability attributes and samples for the experiment based on existing literature and icon application status,analyze the locus diagram,heat map and relational results based on the eye movement experiment,user interview and satisfaction questionnaire,and obtain the problems and rules of the icon cognition.The result of user satisfaction questionnaire is summarized in a form of factor analysis.The purpose of this experiment is to propose the usability design guidance for the individual icon of vehicle interface.The second part is the research of icon layout(5 & 8),size(256px*256px & 128px*128px)and shape(regular & irregular)of vehicle interface.Through the eye tracking technology and satisfaction questionnaire,it can put forward the usability design guidance for the overall icons of vehicle interface based on heat map,locus diagram,cluster,task completed time and SUS scores.The last part is the research results of this article which include the results of the two experiments and the results of existing scholars.The ultimate goal is to propose an usability design guidance for the interface icons in In-Vehicle Infotainment system.It can also provide reference for the icon design of other interfaces.