Intelligent Ventilation and Emergency Evacuation of Underwater Tunnel under fire Conditions

With the development of traffic cause, the number of underwater tunnel increased year by year. The tunnel fire accidents at home and abroad in recent years have caused a large number of casualties and property losses. The layout form of underwater tunnel is special, in the event of fire, the consequence will be unimaginable. The study of ventilating control and fire evacuation of underwater tunnel is urgent and necessary. Propose the Fuzzy PID ventilation algorithm and intelligent control mode of emergency evacuation signs from the perspective of keeping wind speed zero around fire point and induction of personnel escape. Write the PLC program and simulate the emergency evacuation signs' automatic control under the condition of tunnel fire.