Recognition and analysis of an age-friendly intelligent sofa design based on skeletal key-points

Zhou, C., Huang, T., Luo, X., Kaner, J. ORCID: 0000-0002-7946-7433 and Fu, X., 2022. Recognition and analysis of an age-friendly intelligent sofa design based on skeletal key-points. International Journal of Environmental Research and Public Health, 19 (18): 11522. ISSN 1661-7827

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The aging population has a higher level of consumption willingness, higher quality of life demands, and more diversified spiritual pursuits. In recent years, age-friendly industries have entered a ‘blue ocean of development’; intelligent recreation and age-friendly industries have become new growth points in the double-cycle situation; however, the current generalized design of the market is not enough to meet the needs of its elderly users. Through an extensive research and demand analysis focused on the highly-frequent use of sofas by elderly individuals, an AHP analysis showed that smart sofa design guidelines are among the most important functional indicators; user ‘pain points’ focused on low seat surfaces caused by the difficulty in getting up. To further refine this action behavior, a Kinect-based experimental device was used to capture the behavior of the elderly user during the sit-to-stand transition. The experimental data were collected from 25 key skeletal points in the human body and further investigated by converting the skeletal points into 12 key joint angles to refine the joint transition threshold risk during the sit-to-stand transition for the elderly user. The test results show that the most important joint angle affecting the sit-to-stand transition process is the trunk thigh angle was θ
5-2, with an important value of 0.122. The two-dimensional body data of the elderly user was mapped to the joint angles under the three-dimensional activity threshold to build a comfort model of the elderly user’s sofa, providing a theoretical basis for the design parameters of the aging sofa. In response to the research results, an intelligent age-friendly sofa with three forms was designed and prototyped independently, meeting the universal size of elderly users in terms of dimensional parameters, and iterating leisure and assisted standing transformation in terms of function (to reduce the risk levels of the sitting and standing transformations of elderly users).

Item Type: Journal article
Publication Title: International Journal of Environmental Research and Public Health
Creators: Zhou, C., Huang, T., Luo, X., Kaner, J. and Fu, X.
Publisher: MDPI
Date: 13 September 2022
Volume: 19
Number: 18
ISSN: 1661-7827
Rights: © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
Divisions: Schools > Nottingham School of Art & Design
Record created by: Jonathan Gallacher
Date Added: 06 Feb 2023 15:01
Last Modified: 06 Feb 2023 15:01

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