METHOD OF IDENTIFYING FIRES OF SOLID MATERIALS AND LIQUID SUBSTANCES IN ROOM Russian patent published in 2024 - IPC G08B17/00 G06T7/20 

FIELD: fire-fighting equipment.

SUBSTANCE: invention relates to fire-fighting equipment and is intended for early detection of fires in a room. Method for early identification of fires of solid materials and liquid substances in a room includes simultaneous measurement of concentration of oxygen , carbon dioxide, carbon monoxide in air, measurement of air temperature and rate of its growth by fire heat detectors placed on the ceiling at the corners of the room, measurement of the concentration of smoke particles by fire smoke detectors placed on the ceiling at the corners of the room and above potentially combustible materials, determination of electromagnetic radiation of a flame by fire detectors placed on the ceiling of a room above potentially combustible materials, monitoring the change in time of the intensity of the image of potentially combustible materials using a video surveillance camera. When one of the fire detectors is triggered, its repeated interrogation is carried out. In case of repeated actuation of previously actuated fire detector or actuation of at least two smoke detectors, a signal is generated which testifies to the occurrence of fire. At the same time by the video surveillance camera time variation intensity of image of potentially combustible materials on RGB colour channels is monitored and determining frequency of flame pulsations by formula: where t is the time interval in which the flame pulsation frequency is recorded, s; n is number of pulsations for time t. Based on combined evaluation of image intensities in colour channels and frequency of flame pulsations, a signal is generated on ignition of either wood, or diesel fuel, or alcohol, or transformer oil, or vacuum oil.

EFFECT: providing early identification of fires of solid materials and liquid substances by the ratio of intensities of the image of the flame on RGB colour channels obtained by the video surveillance camera, as well as by the frequency of pulsations of the intensity of the image, which characterizes pulsations of the flame.

1 cl, 3 dwg, 1 tbl