Method for checking the functionality of a photoelectric smoke alarm and smoke alarm for carrying out the method

摘要

Method for testing the functionality of a photoelectric smoke detector (100) with a transmitting element for emitting a test beam (120) into an optical labyrinth (130) and a sensor element (140) for detecting the test beam scattered within the optical labyrinth and for outputting a measurement signal, wherein The method comprises the following steps: controlling (200) the transmitting element (110), detecting (201) a measurement signal output by the sensor (140) over the time between a first point in time (t0) and a second point in time (t1) as a measurement signal curve (303) ; 403), comparing (202) the measurement signal profile (303; 403) with a reference signal profile (302; 402), and evaluating (203, 204) the functionality of the optical smoke detector (100) on the basis of the comparison.