Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (08): 135-143.doi: 10.13475/j.fzxb.20201104410

• Apparel Engineering • Previous Articles     Next Articles

Design of smart protective clothing for blind people

JIN Peng1,2, XUE Zhebin3(), JIANG Runtian3, LIU Danyu3, ZHANG Chi3   

  1. 1. College of Textile Science and Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
    2. College of Fashion and Design, Donghua University, Shanghai 200051, China
    3. School of Design, Jiangnan University, Wuxi, Jiangsu 214122, China
  • Received:2020-11-23 Revised:2021-05-17 Online:2021-08-15 Published:2021-08-24
  • Contact: XUE Zhebin E-mail:zhebin.xue@jiangnan.edu.cn

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Abstract:

Aiming at the walk difficulty and deficient safety encountered by blind people, a smart protective clothing was proposed from the perspective of intelligent clothing design. To highlight the visibility of the wearers, reflective strips were added on the chest, waist and wrist of clothing, and detachable airbags were equipped on the neck, crotch, elbow and knee to provide protection. In addition, starting from the daily travel needs of the blinds, embedded sensor systems were used for path way exploration, fall detection and protection, and for warning when falling without standing up. The eigenvalue extraction method based on support-vector machine was used to determine the threshold value for fall judgment. The results show that compared with ordinary clothing, the comfort of the protective clothing is poor in heaviness and looseness, and the overall comfort score is 0.14 lower under the seven point system. The clothing achieves "good" score in sending warning signals in the dim environment within 20 m, and the recognition of the clothing pathfinding function to the side obstacles reaches 100%. The sensor acceleration and angular velocity threshold is 27.44 m/s2 and 60 (°)/s with a success detect rate of 100%, and under the situation where none standing up is detected, the guardian of the wearer will be informed through short message and web page display.

Key words: smart clothing for blind people, fall detection, protection function, warning function, clothing design

CLC Number: 

  • TS941.73

Fig.1

Daily action diagram"

Tab.1

Data sets of different actions"

动作集 佩戴位置 受测试人数 采样频率/Hz 样本数
D 后颈 23 100 1 765
F 后颈 23 100 1 133

Fig.2

Clothing structure diagram and placement of hardware"

Fig.3

Subjective evaluation score of comfort. (a) Score of warmth; (b) Score of wetness; (c) Score of stuffiness; (d) Score of stickiness; (e) Score of heaviness; (f) Score of restricted activity; (g) Score of hardness; (h) Score of tightness"

Tab.2

Measurement scale"

标度 含义
1 表示2个因素相比,具有同样重要性
3 表示2个因素相比,一个因素比另一个因素稍微重要
5 表示2个因素相比,一个因素比另一个因素明显重要
7 表示2个因素相比,一个因素比另一个因素强烈重要
9 表示2个因素相比,一个因素比另一个因素极端重要
2,4,6,8 上述两相邻判断的中值

Tab.3

Test data of clothing eye-catching"

服装 评分均值/分
5 m 10 m 20 m 50 m
盲人服 3.7 3.5 3.0 1.4
普通服装 1.1 0.5 0.2 0.0

Fig.4

Tests of back side fall airbag deployment"

Fig.5

Change of combined acceleration and combined angular velocity"

Fig.6

Alarm page of the web"

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