1. Continuing the theme of the the application projects in 2021 and 2024, the innovative design of ergonomic office chairs is mainly reflected in the detection of bad sitting postures based on spinal stability protection and its active intervention technology, and different implementation schemes of movable seats, such as unstable interface seats, other design schemes for sudden loading and unloading seats.
2. User experience design for smart home case 1
National Key R&D Project “Research on Technical Standards for Human-centered Design and Product User Experience Evaluation” (Project No. 2017YFF0206603)
(1) Based on the human-centered design principle, through product function decomposition research, HCI task research, expert seminars and in-depth interviews with 50 users and online surveys of more than 2,000 people, the research constructed an ergonomic design index system for office desks and chairs. On this basis, combined with the technical specifications of user experience evaluation, from the perspective of improving user experience and health and comfort, a user experience evaluation verification plan was designed, target users were recruited. Human adaptability evaluation experiments and research and analysis were carried out from five aspects: headrest, backrest, seatpan, armrest and adjustment rod. The main evaluation indicators include key human dimension measurement, usability test, seat pressure test, arm motion capture, user subjective test, etc.
(2) HCI characteristics, children’s physiological characteristics, habitual preferences and typical behavioral parameters of children’s learning desks and chairs in learning scenarios were studied. Based on the user experience perspectives such as sitting comfort, effective support, and ease of use, the functional characteristics and user scenario surveys of mainstream children’s desks and chairs on the market were completed. The ergonomic design and evaluation indicators of children’s desks and chairs was constructed. At the same time, combined with the special usage scenarios and target user characteristics of children’s desks and chairs, the HCI parameter test and verification analysis of typical ergonomic indicators were completed.
(3) Based on the physiological characteristics of the Chinese human body and the demand for sofa comfort, on the basis of studying the sofa design and research methods at home and abroad, the design and evaluation standards of comfortable sofas suitable for Chinese people are discussed in terms of methodology and practice. Through a large number of domestic user surveys and sofa product surveys, the ergonomic indicators of the adaptability between people and sofas are analyzed, and a sofa ergonomic design and evaluation indicator system is scientifically constructed. According to the human body size application principle, based on the Chinese human body database, the thresholds of the key indicators of sofa size are scientifically and effectively defined. Based on the quantitative needs of sofa comfort indicators, a test device suitable for sofa angle and softness and hardness is developed, and ergonomic tests are carried out based on this device. The thresholds of the indicators of comfortable and reasonable sofa inclination angle and sofa softness and hardness are obtained through quantitative and qualitative methods.
(4) The mattress ergonomic evaluation technology is studied through user habits and usage scenario surveys, mattress function decomposition and HCI behavior analysis, expert surveys, objective physical measurements and subjective experience evaluation. The ergonomic indicators and evaluation process of the mattress were initially established. Pressure indicators that mainly affect the comfort of the mattress was experimentally studied and the user experience was evaluated. The recommended design requirements and parameter range of the pressure based on the comfort experience were given.
3. Smart home user experience design case 2
Design of Smart Crib Based on User Experience
Firstly, the research background of the subject was discussed, the current research status at home and abroad was summarized, and the research methods and ideas were explained, laying the foundation for further research and design. Secondly, the theory of user experience was systematically explained, and the user experience was combined with the design of smart cribs to construct a hierarchical analysis framework of the user experience of cribs. Based on market research, the current status and characteristics of cribs were analyzed. Thirdly, based on questionnaire surveys, user interviews and user observations, the pain points of the target users were determined, the scene requirements, space requirements and task requirements of users when using cribs were summarized. The key points of the design and the functional points of the product were summarized. Finally, the product design of the smart crib was completed, including hardware and the supporting mobile APP, and the design scheme was compared and analyzed with the cribs currently on the market. The comparison results showed that the user experience evaluation indicators of each dimension were effectively improved, verifying the usability of this design scheme.