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Adaptability of study desks and chairs based on analysis of sitting posture using OpenPose
1. 南京林业大学家居与工业设计学院,南京 210037; 2. 重庆交通大学,重庆 400074
GUO Yuan12 GUO Chenxu2 SHI Xin2 SHEN Liming1*
1. College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing 210037, China; 2. Chongqing Jiaotong University, Chongqing 400074, China
OpenPose 坐姿 学习桌椅 人机关系 适应性
OpenPose sitting posture study desk and chair ergonomics relation adaptability
10.13360/ j.issn.2096-1359.201909016
Using the non-contact Kinect motion capture system and two-dimensional posture detection open source real-time system(OpenPose), this study collected the data of key body indicators in sitting postures of primary school students, analyzed the specific changes of key indicators in different tasks and periods, and then summarized the inherent regulations of ergonomics adaptation, so as to provide reliable bases for the later adaptive adjustment of desks and chairs. The results showed that the neck flexion and visual distance were significantly affected by the tasks of writing, reading and using tablet PC(P < 0.05). In the writing task, the mean value of neck flexion became larger and the visual distance was shorter than the other two tasks, and the amplitude probability distribution function(APDF)was significant, which indicated that the neck was the most changeable body part in the writing task. In addition, the neck flexion tended to be increased as time went on in the writing and tablet PC tasks. In the reading and writing tasks, the time percentage of neck flexion exceeded 20° and visual distance were approximate, while in tablet PC task, the value of neck flexion was smaller than the former tasks, and the visual distance was relatively larger. However, the trunk flexion exceeded 20° and with the time increased, the amplitude probability distribution function(APDF)was significant, which indicated that the trunk was the most changeable body part in the tablet PC task. The mean value of trunk-thigh angle was the largest in reading task, which indicated that the body was relatively relaxed, but the value of neck flexion and visual distance was similar to the task of writing. It was suggested that the study desks should adapt to students to read by erecting books with the angles of 45°-60°, so that it would reduce neck flexion and lengthen visual distance. In addition, with the help of intelligent detection technology, according to the sitting posture data real-time acquired, the desk system adjusted height of desk in due course to meet the requirements from the writing task to the tablet PC task, which reduced trunk flexion and amplitude variation. For the unhealthy sitting posture, the desk system gave an audio reminder or other ways to help primary school students to maintain a healthy posture via the adaption of a dynamic balance.


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收稿日期:2019-09-14 修回日期:2019-10-14
更新日期/Last Update: 2020-03-10