Lee Wonsup, Yang Xiaopeng, Jung Hayoung, Bok Ilgeun, Kim Chulwoo, Kwon Ochae, You Heecheon
a School of Global Entrepreneurship and Information Communication Technology , Handong Global University , Pohang , South Korea.
b Department of Industrial and Management Engineering , Pohang University of Science and Technology , Pohang , South Korea.
Ergonomics. 2018 Nov;61(11):1480-1495. doi: 10.1080/00140139.2018.1493150. Epub 2018 Sep 22.
The present study measured 25 dimensions of the ear including the concha and ear canal for ergonomic design of ear products and compared with existing ear measurement studies. Scanning and casting methods were employed to produce 3D ear images for 230 Koreans and 96 Caucasians and measurements of the ear dimensions were obtained by identifying 21 landmarks on individual ear scan image. The Korean ear measurements were found significantly larger (mean difference = 0.4-3.7 mm) and more varied (ratio of SDs =1.01-1.55) than those of Caucasians in most of ear dimensions. The average ear length and ear breadth of male were significantly longer ( = 1.3-7.0 mm) and wider ( = 0.8-3.0 mm) than those of female. Use of gender- and ethnicity-composite ear data is recommended in product design due to the much larger intra-population variations (7.5-22.2 mm) than the corresponding inter-population variations. Practitioner Summary: The 3D ear measurements of Koreans and Caucasians were collected and compared with those of different ethnic populations. The distinct ear features of the populations identified in this study are applicable to ergonomic design of ear products with better fit and comfort. Abbreviations: CCW: cavum concha width; CV: coefficient of variation; EB: ear breadth; EL: ear length; SD: standard deviation; SE: sampling error; 3D: 3 dimensional.
本研究测量了耳朵的25个维度，包括耳甲和耳道，以用于耳部产品的人体工程学设计，并与现有的耳部测量研究进行比较。采用扫描和铸造方法为230名韩国人和96名高加索人制作3D耳部图像，并通过在个体耳部扫描图像上识别21个地标来获得耳部尺寸的测量值。在大多数耳部维度上，发现韩国人的耳部测量值明显更大（平均差异=0.4 - 3.7毫米）且变化更大（标准差比值=1.01 - 1.55）。男性的平均耳长和耳宽明显比女性更长（=1.3 - 7.0毫米）且更宽（=0.8 - 3.0毫米）。由于群体内部差异（7.5 - 22.2毫米）比相应的群体间差异大得多，因此建议在产品设计中使用性别和种族综合耳部数据。从业者总结：收集了韩国人和高加索人的3D耳部测量数据，并与不同种族人群的数据进行了比较。本研究中确定的不同人群的耳部特征适用于耳部产品的人体工程学设计，以实现更好的贴合度和舒适度。缩写：CCW：耳甲腔宽度；CV：变异系数；EB：耳宽；EL：耳长；SD：标准差；SE：抽样误差；3D：三维。
