光纤光栅测温结合红外火焰探测器在公路隧道火灾监测中的应用

Application of Fiber Bragg Grating Temperature Measurement Combined with Infrared Flame Detector in Highway Tunnel Fire Monitoring

公路隧道结构封闭狭长、救援空间有限,因此公路隧道的火灾探测对系统的反应时间和准确率具有更高的要求。文中将光纤光栅测温技术和火焰探测器技术进行结合应用,更有利于高速公路隧道火灾的实时监测。使用光纤光栅作为温度传感器,能够快速探测到隧道环境温度的变化,且传感器结构稳定;而对于火灾初期范围较小的火焰,暂时未能引起环境温度的明显上升,使用三波长红外火焰探测器,则能够及时检测到火焰,该系统能够在无漏报的同时做到少误报,可以作为公路隧道消防安全的重要保障。

The highway tunnel structure is closed and long,and the rescue space is limited.Therefore,the fire detection of highway tunnel has higher requirements on the response time of the system.The combination of fiber bragg grating temperature measurement technology and flame detector technology for tunnel flame monitoring is more conducive to the real-time monitoring of highway tunnel fire.Fiber bragg grating temperature measurement technology has the advantages of good stability and sensitive response to temperature.Three-wave length infrared flame detector can detect the flame which will not cause the temperature change in a short time.It can ensure the effectiveness and stability of the monitoring,and make fewer false alarms without missing alarms,which becomes an important guarantee for the fire safety of highway tunnel.