Research on the design of home auxiliary readers for the elderly base on QFD and TRIZ

According to the WHO, there will be 1.4 billion people over the age of 60 by 2030. Successful aging promotes the physical and mental health of the elderly, and lifelong learning exerts a positive influence on the elderly's successful aging. Reading habits play a critical role in this process, and the demand for auxiliary readers among the elderly grows with their physical deterioration. Combining quality function deployment (QFD) and the theory of inventive problem solving (TRIZ), based on the elderly's demand for the auxiliary reader, this study conducts a text analysis through web crawler on the online user evaluation (JD.com/About 400,000 words, Amazon/About 1.1 million words) of auxiliary readers in the consumer markets at home and abroad, and supplements customer needs with scenario analysis. KJ (Kawakita Jiro) is adopted to classify and turn it into engineering requirements to build an interaction matrix. The importance of customer requirements is then calculated through a questionnaire survey of 102 elderly people (average age is about 70 years), and experts are invited to evaluate the relationship matrix to determine the importance of engineering characteristics, so as to construct the house of quality (HoQ) of home auxiliary readers for the elderly (HARE). Based on the QFD study, it employs TRIZ to identify and resolve contradictions in engineering characteristics. By applying the systematic method that combines QFD and TRIZ, it finally summarizes and proposes the design principles and innovative plans for HARE, with specific application references for related research and design.