COMBINED FIRE ANNUNCIATOR Russian patent published in 2023 - IPC G08B17/103 

FIELD: firefighting technical means.

SUBSTANCE: combined fire detector contains a smoke detector and a precision temperature sensor, while the smoke detector is made in the form of a smoke chamber with a protective mesh and a light emitter and photodetector inside, the optical axes of which lie in different planes. The smoke chamber is made with special protrusions made in the form of wave-shaped ribs to exclude external illumination of the photodetector. Inside the detector body there is a thermal channel with a precision thermal sensor, the signals from which, together with the signals from the light emitter, are processed by an electronic recording and control unit containing a microcontroller, an amplifier, a photodetector, a temperature-compensated current source connected to the light emitter, and an energy storage device in the form of a capacitor.

EFFECT: reducing power consumption and heat generation, increasing the reliability of fire detection.

2 cl, 5 dwg