Research on human heat stress evaluation indexes based on EWM-VIKOR model

doi:10.16265/j.cnki.issn1003-3033.2025.06.1171

Abstract

Abstract:

The human body is susceptible to heat diseases when exposed to high temperature and high humidity for a long period of time. In order to assess the level of human heat stress in indoor high temperature and high humidity environments, the paper utilized the EWM to determine the weights of measurement parameters such as Mean Skin Temperature (MST), Heart Rate (HR), Oral Temperature (OT) and Tympanic Temperature (TT). A new comprehensive evaluation index QI was established based on VIKOR model. The reasonableness of QI was validated by fitting with the subjective parameters and the environmental parameters. The grading of QI was determined by improving the thermal stress intensity grading of the physiological stress indicator PHSI. The results show that the weight ranges of TT, MST, OT and HR are 0.151 9-0.421 1, 0.193 5-0.345 2, 0.160 4-0.426 9 and 0.134 8-0.339 1, respectively. MST has a high mean value of weight, which is greatly affected by environmental factors and labor factors. QI's safety range [0,0.36), thermal tolerance range [0.36,0.57] and hazardous range (0.57,1].

Key words: entropy weight method (EWM), vlsekriterijumska optimizacija i kompromis-no resenine (VIKOR), heat stress, evaluation indicators, high temperature and high humidity

CLC Number:

X968高低温防护

YOU Bo, WANG Siqi, LIU Heqing, LUO Xiao, YANG Ming, GAO Ke. Research on human heat stress evaluation indexes based on EWM-VIKOR model[J]. China Safety Science Journal, 2025, 35(6): 232-239.

Figures/Tables 7

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测量指标	仪器	精度
口腔温度/℃	电子体温计	±0.1
皮肤温度/℃	温度传感器	±0.01
耳膜温度/℃	电子体温计	±0.2
心率/%	电子血压计	±5

劳动强度	环境温度/℃	QI值分布
轻度劳动强度	32	[0.08,0.27]
	34	[0.07,0.32]
	36	[0.22,0.62]
	38	[0.22,0.90]
中度劳动强度	32	[0.18,0.40]
	34	[0.22,0.62]
	36	[0.28,0.93]
	38	[0.30,0.98]
重度劳动强度	32	[0.20,0.49]
	34	[0.22,0.71]
	36	[0.23,0.98]
	38	[0.41,1]

热应力强度	PSI数值
无或轻度	-1、0、1、2
稍轻	3、4
中度	5、6
重度	7、8
非常重	9、10、11、12