The utility model discloses a high-precision fire-fighting
smoke detection alarm, and relates to the technical field of fire-fighting equipment, the high-precision fire-fighting
smoke detection alarm comprises an integration box, a fixed
flange and an induction box, the fixed
flange is fixedly connected to the top of the integration box, the induction box is fixedly connected to the bottom of the integration box, and a single-
chip microcomputer and a
buzzer are integrated in the integration box; a detection structure for detecting
smoke is arranged between the integration box and the induction box,
infrared rays emitted by the
infrared ray emitting head can be captured by the
infrared ray receiving head, and the infrared rays can be interfered and absorbed by the smoke in the transmission process, so that the smoke can partially block transmission of the infrared rays, and meanwhile, the smoke can be prevented from entering the induction box. When the smoke is emitted,
small particles in the smoke scatter, absorb or reflect infrared
radiation, so that the transmission capacity of infrared rays is weakened, the more smoke particles are, the more serious the scattering degree of light rays is, the weaker the
light intensity received by the infrared receiving head is, and thus the
buzzer in the integrated box is triggered to give an alarm.