False alarm risk analysis of smoke detectors by environmental interference in ancient buildings

For the great difference between the airtightness and ventilation environment of ancient buildings and modern buildings, smoke detectors installed in ancient buildings will increase the probability of false alarm due to environmental interference such as fog or dust. This paper proposes a new method of using PM2.5, PM10, wind speed and humidity interference factors, evaluating the false alarm risk of smoke detectors, and the effectiveness of this method is verified through the above environmental monitoring data and false alarm information of smoke fire detectors in specific ancient buildings. This method has certain value for the reliability evaluation of fire detection and alarm systems in ancient buildings and the improvement of fire management decision-making ability.