METHOD FOR ADAPTIVE FIRE EXTINGUISHING IN THE ROOM Russian patent published in 2022 - IPC A62C3/00 

FIELD: fire-fighting equipment.

SUBSTANCE: invention relates to fire-fighting equipment and is intended for the detection of fires and subsequent extinguishing. The method for adaptive fire extinguishing in a room includes continuous monitoring of fire danger, determination of the moment of ignition and activation of sprinklers. The gas analyzer, located on the ceiling of the room above potentially combustible materials, constantly measures the concentrations of oxygen, carbon dioxide, carbon monoxide in the air. Thermal fire detectors placed on the ceiling in the corners of the room measure the air temperature and the rate of its increase. Smoke detectors placed on the ceiling at the corners of the room and above potentially combustible materials measure the concentration of smoke particles. The electromagnetic radiation of the flame is determined by fire detectors placed on the ceiling of the room above potentially combustible materials. The measured values are compared with the specified response thresholds. If they match, fire detectors are actuated. If any of these fire detectors are triggered again for no more than 60 seconds, or if at least two smoke detectors are triggered for no more than 60 seconds, or if the current values of gas concentrations coincide with the set values, the water supply to the sprinklers is activated at a pressure of 2 bar, providing a fire source irrigation density of 0.03 l/(m ²⋅ c). The surface temperature of all potentially combustible materials is constantly monitored simultaneously with the monitoring performed by the gas analyzer and fire detectors, with a thermal imaging camera placed on the ceiling in the corner of the room and a video surveillance camera placed on the ceiling in the opposite corner of the room opposite the thermal imaging camera monitors the change in time of the normalized intensity of the image of the fire source. When the surface temperature of the fire source does not exceed 200 °C, and the normalized intensity of the image of the fire source does not exceed 0.4 for wood and 0.6 for linoleum on a heat-insulating basis at a rate of decrease of no more than 0.01 s^-1, stop the process of water supply through sprinklers.

EFFECT: present invention enables to increase the efficiency of extinguishing the fire by reducing water consumption, reducing the negative consequences of fire associated with excessive flooding of the room area with water.

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