METHOD FOR DETECTING FIRE AND THE PLACE OF ITS OCCURRENCE AND SYSTEM FOR IMPLEMENTING METHOD Russian patent published in 2021 - IPC A62C35/00 

FIELD: fire protection.

SUBSTANCE: group of inventions relates to methods and systems of multifactorial self-adjusting monitoring fire hazard at protected objects. The method for detecting a fire and the place of its occurrence is characterized by the following steps: an object computer with two completely identical fire aspiration detectors (FAD) is combined by means of interface connections; two identical adjacent networks of intake openings, which are part of their air duct, forming completely identical branches for each of the two FADs are performed three-dimensionally according to the specified coordinates in the protected object; each branch is connected with its FADs; power supply from a common power source for both FADs is carried out; the speed of transportation of the gas-air mixture taken from the room is adjusted by means of an internal fan of each FAD to its standard value, while the speed V1 is set higher than the speed V2, taking into account the accuracy characteristics of the speed meter used for measuring, and the speed setting error; the first FAD with a higher transportation speed having its own forming inlet duct branch is used, if this FAD registers a fire signal of the starting command “Fire”; the countdown is started at the command “Fire” by means of the object computer, and at the moment of receipt of the “Fire” signal from the second FAD, registering the occurrence of a fire, the countdown is stopped by the computer’s finishing command; the duration of the time interval between the “Fire” signals of the first and second FADs is determined by the object computer.; the distance to the air intake near which the fire occurred is determined according to the program embedded in the computer, according to the formula V1*V2*t/V1-V2 = L, where V1 (m/s) is the set speed of transportation of the gas-air mixture in the first duct, V2 (m/s) is the set speed of transportation of the gas-air mixture in the second duct, t (s) is the duration of time from the appearance of the “Fire” signal from the first FAD to the appearance of the “Fire” signal from the second FAD, L (m) is the length of the pipeline from the FAD to the air intake port closest to the detected fire site; the coordinates of the resulting fire are determined by the previously specified known coordinates of the air intake opening, which has received the gas-air mixture with fire hazard factors, by means of a given program installed in the computer.

EFFECT: provision of simultaneous effective multifactorial control of the protected object for fire danger and the determination of the coordinates of the fire origin point.

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