| With the rapid development of the domestic economy,more and more people have their own cars,but the contradiction between the supply and demand of parking spaces has become increasingly prominent.Compared with the previous parking garage,the stereo parking garage will replace the traditional parking garage due to its high parking utilization rate and intelligence and many other advantages.As a tall and large space building,the stereo parking garage has extremely complex internal structure and cumbersome operating mechanism.Once a fire occurs,the vehicle cannot be evacuated in time,which can easily cause accidents such as secondary explosions.Therefore,it is very necessary for the early detection,precise positioning and automatic fire extinguishing of the internal fire of the stereo parking garage.The internal structure of the stereo parking garage is extremely complicated.According to the structural characteristics of the stereo parking garage and the requirements of fire protection design,this paper proposes a scheme of automatic positioning jet fire extinguishing system with distributed optical fiber temperature detection,infrared pyroelectric detection and image detection and positioning technology.This system realizes the early warning function of the early fire detection of the stereo parking garage based on the distributed optical fiber temperature sensing.When the alarm is issued,the area information is reported at the same time.The mobile system moves the fire extinguishing device to the approximate height of the fire,and undergoes pyroelectric infrared detection.With the image detection and positioning system,the fire source can be accurately located,and finally the automatic fire extinguishing system can accurately locate and extinguish the fire.The focus of this system is to give a detailed introduction to the system composition and working principles of the three technologies of distributed optical fiber temperature detection,pyroelectric infrared detection,and image-based fire detection.The system structure and software and hardware of the system are designed and studied,and the mathematical model of the fire monitor water flow and the theoretical model of the jet trajectory based on the Matlab platform are drawn and simulated and verified.The possible errors are decomposed and analyzed,which is the wisdom of the stereo parking garage.The design and exploration of the fire protection system provide new technical support and basis.According to the fire protection system design plan we gave,the experimental platform of the fire protection system was built.Through the analysis and research of the experimental methods of the smart fire protection system,relevant experimental verifications were carried out from the fire warning detection,positioning,fire suppression and reliability of the smart fire protection system.The results show that the intelligent fire protection system can better solve the difficult problem of the fire protection design of the stereo parking garage.The fire-fighting system can realize early detection,precise positioning and effective fire suppression of fires,and the smart fire protection system is stable and reliable for long-term operation. |
