SYSTEM OF EARLY DETECTION AND DETERMINATION OF FOREST FIRE TYPE Russian patent published in 2017 - IPC G08B17/00 G08B25/10 G01V1/00 G08B13/16 

FIELD: fire safety.

SUBSTANCE: system of early detection and determination of the forest fire type comprises n sensors, each of which comprises an acoustic sensor, the first temperature switch, the first output of which is connected to a power source, and the second output is connected to the first power input of the radio transmitter, the output of which is connected to the radio antenna placed on the controlled area around the monitoring center containing a sound reproducing device, a radio receiver, the input of which is connected to the radio receiver antenna. Wherein each sensor additionally comprises the second temperature switch, the first output of which is connected to the power source, and the second output is connected to the input of timer with the controlled key, the output of which is connected to the first power input of the radio transmitter, the second input of which is connected to the output of the amplifier, the first power input of which is connected to the second output of the first temperature switch, and the second input is connected to the acoustic sensor output. The control unit in the monitoring center comprises an analogue-to-digital converter having an input connected to the output of a radio receiver, and the output is connected to the first and second inputs of the signal code detection device with the controlled key, the output of which is connected to the input of the sound reproducing device and to the input of the Fourier spectrum calculator, the output of which is connected to the inputs of two combiners of low frequencies amplitudes and of high frequencies amplitudes, the outputs of which are connected respectively to the first and the second input of the subtracting device, the output of which is connected to the threshold device input.

EFFECT: remote sensors performance determination before the fire, and automatic detection of the fire type in its early detection and subsequent monitoring.

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