城市隧道火灾报警系统潜在问题分析及优化

通过对城市隧道的历史火灾案例分析研究，总结火灾报警系统的潜在问题，并针对性地提出优化及解决方案。通过智能化手段研究解决问题，包括优化系统人机监控图形界面，增加应急后备功能，对每个雨淋阀组分区与监控摄像机进行二次对位，提高系统容错率及对位准确率。通过试验案例测试效果，当现场火警（光纤光栅、双波长火焰探测器）因环境原因未能探测到火灾信号，但视频事件检测或人工通过大屏视频判断火灾情况下，可以后备准确开启现场雨淋阀组，并通过数字孪生技术辅助启动相关预案。

Analysis of Potential Problems and Optimization of Fire Alarm System in Urban Tunnel

By analyzing and studying the historical fire cases of urban tunnels, the potential problems in the fire alarm system are summarized. The optimization and solving schemes are specially proposed. The problems are studied and solved through the intelligent means. The man-machine monitoring graphical interface of the system is optimized. The emergency backup functions are added. The second alignment between each rain valve group and monitoring camera is carried out to improve the fault tolerance rate and alignment accuracy of the system. The effects are tested through the test cases. When the on-site fire alarm (fiber grating, dual-wavelength flame detector) fails to detect the fire signal due to the environmental reasons, but the video event detection or manual work through the large screen video to judge the fire situation, the on-site rain valve group can be reserved and accurately opened. And the relevant pre-arranged planning can be started through the digital twin technology.