G - Physics – 08 – B
Patent
G - Physics
08
B
340/102, 340/30
G08B 23/00 (2006.01) A62B 3/00 (2006.01) G08B 7/06 (2006.01) G08B 5/36 (2006.01) G09F 19/22 (2006.01)
Patent
CA 2018125
ABSTRACT OF THE DISCLOSURE An emergency evacuation arrangement comprises a plurality of sensors 30 to37 each for sensing an emergency situation, such as smoke, fire, or vibration, at a respective zone 11 to 18 of a structure l. A processor 38 is provided, for receiving signals generated by the sensors 30 to 37, for generating alarm indication signals and escape route indication signals for energising, respectively, acoustic generators 39 to46 and visual escape route direction markers 48 to 54. In any zone in which an emergency situation is sensed to exist, the processor 38 supplies alarm indication signals only and alarm indication signals in combination with escape route information signals in other zones. The signals provided by the processor 38 may be pulsed in sequence and varied in frequency 80 as to sequentially indicate safe egress routes, either visually and or acoustically.
Mascarenhas Everard J.
Ridout & Maybee Llp
Thorn Emi Plc
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