Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (02): 130-135.doi: 10.13475/j.fzxb.20181005306

• Apparel Engineering • Previous Articles     Next Articles

Effect of heating area of electric heating socks on foot temperature

LIU Yongmei1, XIAO Ping1,2,3(), FAN Yawen1   

  1. 1. College of Fashion and Design, Donghua University, Shanghai 200051, China
    2. Key Laboratory of Clothing Design and Technology, Ministry of Education, Donghua University, Shanghai 200051, China
    3. Shanghai Institute of Design and Innovation, Tongji University, Shanghai 200092, China
  • Received:2018-10-30 Revised:2019-08-23 Online:2020-02-15 Published:2020-02-21
  • Contact: XIAO Ping E-mail:xiaoping@dhu.edu.cn

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Abstract:

In order to explore the effect of different heating areas of electric heating socks on the warming of the foot, the foot/sock area was divided according to the physiological characteristics of the foot and the structural characteristics of the socks. Three areas including the front instep, the front of the sole and the middle of the sole were selected as the heating area, and six socks with the single heating area and double heating areas were designed. The infrared camera and Laser-Doppber Flowmetry(LDF) were used to detect the temperature change and blood perfusion of the surface of each area when the foot was wearing different styles of electric heating socks, and the effect of warming the foot was quantified. Experiments show that although the styles of electric heating socks are different, they all have the effect of keeping warm. The temperature rise in the foot area corresponding to the heat-generating sheet is the most obvious, followed by the adjacent area. The single heating area has little effect on the microcirculation of foot blood vessels, and the combination of sole heating is better than the combination of the front instep and the sole in the double region.

Key words: electric heating sock, foot area, infrared camera, Laser-Doppler Flowmetry, temperature, blood perfusion

CLC Number: 

  • TS941.7

Fig.1

Schematic diagram of foot/socks division A—足背前部;B—足背后部;C—足底前部;D—足底中部;E—足底后部。"

Tab.1

Instructions of foot/socks division"

划分区域 划分说明
足背前部 足尖至跖围与足背交线,主要对应袜头面部
足背后部 跖围与足背交线至兜围与足面交线,
主要对应袜面中后部
足底前部 足尖至跖围与足底面交线,主要对应袜头底部
足底中部 跖围与足底面交线至跗围与足底面交线,
主要对应袜底中部
足底后部 跗围与足底面交线至兜围与足底面交线,
主要对应袜跟

Tab.2

Experimental socks and instructions"

发热
区域数		 编号 发热
区域		 实验袜品说明
单区域
发热		 1# A 袜子对应足背前部放置发热片
2# C 袜子对应足底前部放置发热片
3# D 袜子对应足底中部放置发热片
双区域
发热		 4# A+C 袜子对应足背前部、足底前部放置发热片
5# A+D 袜子对应足背前部、足底中部放置发热片
6# C+D 袜子对应足底前部、足底中部放置发热片

Tab.3

Key data of experimenter's footcm"

编号 足长 足宽 跖围 跗围 兜围
1 22.2 8.4 21.1 21.9 27.1
2 22.0 8.1 20.0 21.5 26.0
3 21.8 8.5 22.0 23.0 27.9

Fig.2

Infrared thermal image of foot"

Tab.4

Foot temperature before and after experiment wearing different socks℃"

袜子
编号		 A B C D E
参照组 实验组 参照组 实验组 参照组 实验组 参照组 实验组 参照组 实验组
1# 24.4 34.9 27.1 27.3 24.8 24.9 25.4 25.2 25.5 25.1
2# 23.9 23.9 26.7 26.5 23.4 30.2 24.8 25.5 25.6 25.2
3# 24.4 24.7 27.5 27.6 24.4 24.1 25.2 29.7 25.2 25.9
4# 23.9 34.7 26.6 27.1 24.0 30.9 25.6 25.6 24.9 24.3
5# 23.7 34.2 26.0 26.7 24.2 24.3 24.7 31.1 24.0 24.4
6# 24.2 24.4 26.3 26.3 24.1 31.7 24.6 32.7 24.4 25.1

Tab.5

Result of paired sample T test"

款式 均值 标准差 p值
1实#-1参# 2.013 3 4.391 7 0.098*
2实#-2参# 1.353 3 2.819 5 0.084*
3实#-3参# 1.086 7 1.863 1 0.040**
4实#-4参# 3.533 3 4.743 8 0.012**
5实#-5参# 3.606 7 4.331 7 0.006***
6实#-6参# 3.320 0 3.924 0 0.006***

Fig.3

Temperature difference for different foot areas and different experimental socks"

Tab.6

Ratio of posterior-anterior blood perfusion under different heating combinations"

发热
区域数		 袜子
编号		 不同足部区域的F/F0
P1 P2 P3 P4
单区域 1# 1.64±0.48 0.95±0.08 1.02±0.07 1.17±0.15
2# 1.34±0.28 1.23±0.03 1.25±0.24 1.05±0.14
3# 1.02±0.28 1.59±0.31 1.20±0.04 1.31±0.45
双区域 4# 1.47±0.57 1.11±0.22 1.14±0.02 0.96±0.04
5# 1.15±0.02 0.98±0.01 1.11±0.05 0.90±0.08
6# 1.28±0.25 1.29±0.26 1.58±0.10 1.17±0.09
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