AUTONOMOUS ALARM AND STARTING FIRE EXTINGUISHING SYSTEM Russian patent published in 2022 - IPC G08B17/06 

FIELD: fire protection.

SUBSTANCE: invention relates to the field of fire-fighting equipment, and more specifically to automatic fire alarm devices and control of fire-fighting equipment. The expected result of the claimed technical solution is achieved by the fact that in the claimed solution, the signals detected by amplitude detectors are spaced in time and have different polarities and the circuit works as a selection circuit to the maximum. In addition, in the claimed solution, the receiver is equipped with the fourth, fifth and sixth adders, a fourth phase inverter and two amplitude detectors, and the fourth adder is connected in series to the output of the first key, the second input of which is connected to the output of the second delay line, the first amplitude detector and the sixth adder, the output of which is connected to the registration unit, to the output of the second line the fourth phase inverter, the fifth adder, the second input of which is connected to the output of the first key, and the second amplitude detector are connected in series, the output of the latter is connected to the second input of the sixth adder.

EFFECT: increase in the reliability of alarm signal reception.

1 cl, 9 dwg