CPC G08B 29/02 (2013.01) [G01S 17/04 (2020.01); G01V 1/001 (2013.01)] | 14 Claims |
1. A fire detection apparatus comprising:
a fire detector (1, 10) comprising an integrated sounding device (5) that is configured to emit a sound (7) from the fire detector (1, 10) and that is further configured to detect reverberation of the emitted sound resulting from a cover (9) placed over the fire detector (1,10);
wherein the fire detector (10) comprises a light emitter (14) and a light detector (12), wherein the light emitter (14) is configured to emit a light from the fire detector (10) and wherein the light detector (12) is configured to detect the emitted light after having been reflected back to the fire detector (10) by a cover (9) placed over the fire detector (10);
wherein the sounding device (5) detects a change in acoustic pressure in order to detect the reverberation.
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