Research And Implementation Of Daxie Petrochemical Tunnel's Fire Protection System

In this paper, for Daxie petrochemical tunnel fire protection, the fire prevention system design and inspection. Industrial sector is now increasing development of tunnel, and there is a big security hidden danger. The fire is the biggest hazard in tunnel construction. Aiming Daxie petrochemical tunnel fire protection system design and testing. Industrial sector is increasing development of tunnel now, and there is a big security hidden danger. The fire is the biggest hazard in tunnel construction. First cage long tunnel, but space is limited, so cause construction personnel intensive construction, not scattered; So once the tunnel fire, fuel burning smoke from the fire origin will be generated rapidly by convection space spread in the form of last smoke filled the tunnel. Tunnel space is limited, and the construction to bad ventilation,smoke cannot be dispersed, so caused the rescue and escape is difficult, but also can make the tunnel construction equipment destroyed eventually lead to huge property losses and casualties.This system adopts the embedded method, using the software hardware integration effectively, has the following features: In terms of software, this system can real-time monitoring of illumination, temperature, concentration of the smoke, the smoke is mainly hydrogen sulfide gas, system will receive the outside information into electrical signal is analyzed, displayed on the visual interface curve, monitoring personnel on this view, it designed a database to store the information, facilitate expert analysis in the future. The important of which is information transmitted to the control center of the sensor signal processing, software improve the interface between the sensor and the CPU, light sensors, smoke concentration information to the outside world through the I/O interface to the CPU. The light, temperature, the concentration of the smoke, and other information stored on the computer. The next computer received signal processing and analysis, in the form of a curve is presented in the client window. When the observed information more than setIn the aspect of hardware, for optical fiber temperature sensor, this systemthrough access to light and temperature information, depend on the temperature detection of fire, if the temperature reaches a predetermined value or more than the value of time, automatic alarm device will respond. This system's sensor is of high sensitivity, the temperature and light can respond in a timely manner. And the temperature and the illumination information timely passed to the CPU. Is not affected by the surrounding environment. For smoke sensor, when it produces hydrogen sulfide gas, fire system by detecting the concentration of hydrogen sulfide gas, if concentration reaches the threshold value set before, system will start to call the police.Through system integration tests in the factory, found that fiber optic temperature sensor and smoke sensors sensitivity is higher, the effect of the visual interface is also very good, basically can be used in the factory production.