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QFD-Based Research on Sustainable User Experience Optimization Design of Smart Home Products for the Elderly: A Case Study of Smart Refrigerators

Author

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  • Yongchuan Li

    (Department of Mechanical Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia
    Centre for Sustainable and Smart Manufacturing, Faculty of Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia)

  • Raja Ariffin Raja Ghazilla

    (Department of Mechanical Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia
    Centre for Sustainable and Smart Manufacturing, Faculty of Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia)

  • Salwa Hanim Abdul-Rashid

    (Department of Mechanical Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia
    Centre for Sustainable and Smart Manufacturing, Faculty of Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia)

Abstract

In the current situation of global aging, the current market shortage of age-appropriate smart home products and the recent epidemic have led to greater isolation of the elderly, seriously affecting their physical and mental health. In order to optimize the sustainable user experience of the elderly when using smart home products, this paper proposes a research method based on Quality Function Deployment (QFD) for the optimal design of user experience of smart home products for the elderly, taking the design of age-appropriate home smart refrigerators as an example. Firstly, based on the results of market research and user interviews, the requirements of smart refrigerators for the elderly are screened and integrated, and the Kano model is used to prioritize these needs, resulting in the identification of important features needed in smart refrigerators for the elderly. Secondly, based on QFD, user requirements are transformed into design requirements, and a quality house model is established to ascertain the degree of importance of each design requirement through user ratings so as to obtain the key requirements as the theoretical basis for the solution design. Finally, optional solutions are generated for concept evaluation based on PUGH concept selection, comparing the advantages and disadvantages of the solutions and recombining them into an evaluation to determine the best solution. The quantitative evaluation of the four solutions reveals that Solution A has the highest score of 117.358, followed by Solution D with 113.259, Solution B with 96.415, and Solution C with 85.511, which is the lowest. The scoring allows the best design solution to be selected and applied to product development. The results show that the introduction of the Kano model and PUGH concept selection into QFD can be effectively used as a research method for optimizing the user experience of smart refrigerators for the elderly, and a corresponding design strategy for sustainable user experience optimization is proposed. The method and strategy provide guidance for the innovative design of new smart home products.

Suggested Citation

  • Yongchuan Li & Raja Ariffin Raja Ghazilla & Salwa Hanim Abdul-Rashid, 2022. "QFD-Based Research on Sustainable User Experience Optimization Design of Smart Home Products for the Elderly: A Case Study of Smart Refrigerators," IJERPH, MDPI, vol. 19(21), pages 1-22, October.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:21:p:13742-:d:950487
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    References listed on IDEAS

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    1. Adèle Gauthier & Cécile Lagarde & France Mourey & Patrick Manckoundia, 2022. "Use of Digital Tools, Social Isolation, and Lockdown in People 80 Years and Older Living at Home," IJERPH, MDPI, vol. 19(5), pages 1-18, March.
    2. Anna Rosa Donizzetti & Martine Lagacé, 2022. "COVID-19 and the Elderly’s Mental Illness: The Role of Risk Perception, Social Isolation, Loneliness and Ageism," IJERPH, MDPI, vol. 19(8), pages 1-15, April.
    3. Jing Liu & Khairul Manami Kamarudin & Yuqi Liu & Jinzhi Zou, 2021. "Developing Pandemic Prevention and Control by ANP-QFD Approach: A Case Study on Urban Furniture Design in China Communities," IJERPH, MDPI, vol. 18(5), pages 1-26, March.
    4. Chen, Chun-Chih & Chuang, Ming-Chuen, 2008. "Integrating the Kano model into a robust design approach to enhance customer satisfaction with product design," International Journal of Production Economics, Elsevier, vol. 114(2), pages 667-681, August.
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    1. Dominika Siwiec & Andrzej Pacana & Andrzej Gazda, 2023. "A New QFD-CE Method for Considering the Concept of Sustainable Development and Circular Economy," Energies, MDPI, vol. 16(5), pages 1-21, March.

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