| With the continuous development of the ’ Internet + education ’ model,online learning,as a new way of learning,has become an indispensable part of the modern teaching model.However,the change of learning environment and the lack of guidance and supervision lead to the problems of teenagers ’inattention and irregular sitting posture in the process of home online learning.Therefore,this paper uses the situational analysis method to study the learning behavior of young people in the online learning environment at home,and explores the influence of various situational factors on young people ’s learning,based on which the design of multi-functional backrest is carried out.Firstly,the scenario analysis method is used to analyze the home online learning scenario and the user group respectively,and the environmental factors and user characteristics under the home online learning scenario are summarized and refined.The purpose is to construct a home online learning physiological-psychological behavior model to focus on user needs and carry out user research.Secondly,the questionnaire survey method and user interview method are used to obtain user needs,and the matching relationship between user needs and product functions is analyzed and sorted out in combination with scenario analysis to construct a youth home demand-function model.The factor analysis method is used to calculate the demand-function importance,and the main functional points of the multi-functional backrest are extracted.Thirdly,through the research and analysis of learning assistant products such as learning tables and chairs,learning effect promotion products,learning state maintenance products and existing backrest products,the design opportunity points of multi-functional backrest are summarized.Combined with the physiological and psychological behavior model of home learning,the ergonomics analysis and modeling image extraction of multi-functional backrest are carried out,and the CMF design optimization is carried out to sort out the main design elements of multi-functional backrest.Finally,based on the previous research and analysis,the multi-functional backrest design strategy is formulated to expand the generation,output and optimization of the multi-functional backrest design scheme,and the multi-functional backrest auxiliary interface is designed.At the same time,a brand system is established to increase user stickiness.By introducing the scenario analysis method into the design,it provides theoretical support for obtaining the early user needs of the multi-functional backrest,and summarizes the design opportunity points through a large number of investigations on related learning aids,and completes the design practice based on this design.The design scheme is verified by product satisfaction evaluation and APP feasibility test. |