In order to prevent the occurrence of negative stress reaction of subway passengers under fire and improve the positive stress reaction ability of subway passengers, the characteristics of fire stress physiological reaction of subway passengers were analyzed by experiment and catastrophe theory. Firstly, the virtual reality technology is used to realize the subway car fire, which requires the volunteers to escape to the ground safety exit smoothly according to the prompt; secondly, the heart rate and blood pressure of the volunteers are measured during the VR experience of the subway fire; thirdly, the heart rate and blood pressure are taken as the control variables and the stress state is taken as the state variable to establish the volunteer’s cusp catastrophe model of stress physiological response. Finally, statistical analysis and qualitative fitting analysis of experiment data were carried out. The results showed that only one volunteer had negative stress response under VR subway fire stress, and other volunteers were in a state of positive stress response. The physiological stress response of subway passengers meets the potential function condition of cusp mutation.

中文翻译：

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使用虚拟现实技术的乘客对地铁火灾的生理反应

为了防止火灾下地铁乘客的负应力反应的发生，提高地铁乘客的正应力反应能力，通过实验和突变理论对地铁乘客的火应力生理反应特性进行了分析。首先，利用虚拟现实技术实现地铁车厢起火，要求志愿者根据提示顺利逃离地面安全出口。其次，在地铁火灾的虚拟现实体验中测量志愿者的心率和血压。第三，以心率和血压为控制变量，以应激状态为状态变量，建立志愿者应激生理反应的尖点突变模型。最后，对实验数据进行统计分析和定性拟合分析。结果表明，只有一名志愿者在VR地铁火警压力下具有负压力反应，其他志愿者处于正压力反应状态。地铁乘客的生理应激反应满足了潜在的尖顶突变功能条件。