基于红外热成像技术的车厢内部火灾预警研究

摘要

The infrared thermal imaging technology is one of the most practical detection means in fire early warning, and it can effectively improve the safety of the train compartment.The principle and advantages of infrared thermal im-ager are described,and as EMU carriage has the characteristics of long and narrow,the lens of infrared detector re-quires to be selected.Probability model of the flame is built,and the flame is decided through this model,which im-proves the detection precision.The experiment verifies the availability and stability of this method.%红外热成像技术是目前最为实用的火灾预警检测手段之一，可以有效提高列车车厢的运行安全。基于红外热像仪的原理及优点，结合动车组车厢较为狭长的特点，探讨红外探测器的镜头选择；提出了融合绝对温度和基于高度变化的火焰判定概率模型，提高了火焰检测的精度。在动车车组车厢环境中的测试验证了方法的有效性和稳定性，降低虚警。