针对水蒸气这种典型的火灾探测误报源,在自行研制的火灾探测综合模拟实验平台中,通过收集水沸腾形成的水雾模拟水蒸气干扰源,研究了冬季与夏季,即不同环境温度条件下,水蒸气对散射型光电感烟火灾探测器的误报影响。通过比较感烟火灾探测器的输出值与其附近湿度变化曲线,分析了误报发生的原因。结果表明在气温较低的冬季,水蒸气较易形成液态小水珠,容易导致感烟火灾探测器误报;而在夏季由于气温较高,这种误报不易发生。 Aiming at the typical fire detection false source of water vapor, this paper studied the water vapor simulated water vapor source which was formed by water boiling in self-developed fire detection integrated simulation experimental platform. The effects of different ambient temperature conditions Under the water vapor on the scattering type photoelectric smoke detectors false positive impact. By comparing the smoke detector output value and its vicinity humidity curve, analysis of the causes of false positives. The results show that in the winter season with low temperature, water vapor is more likely to form small droplets of liquid, which can easily lead to false alarm of smoke detector. In summer, the false alarm is hard to occur due to the high temperature.