US 11,756,391 B2
Voice alarm device
Praveen Deshpande, Pune (IN); Faruk Meah, Surrey (GB); and Prasad Kulkarni, Berkshire (GB)
Assigned to JOHNSON CONTROLS FIRE PROTECTION LP, Boca Raton, FL (US)
Appl. No. 17/430,176
Filed by Johnson Controls Fire Protection LP, Boca Raton, FL (US)
PCT Filed Feb. 12, 2020, PCT No. PCT/EP2020/053660
§ 371(c)(1), (2) Date Aug. 11, 2021,
PCT Pub. No. WO2020/165289, PCT Pub. Date Aug. 20, 2020.
Claims priority of application No. 1901938 (GB), filed on Feb. 12, 2019.
Prior Publication US 2022/0101700 A1, Mar. 31, 2022
Int. Cl. G08B 3/10 (2006.01); G08B 17/00 (2006.01); G08B 25/04 (2006.01); G08B 27/00 (2006.01)
CPC G08B 3/10 (2013.01) [G08B 17/00 (2013.01); G08B 25/04 (2013.01); G08B 27/005 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A fire alarm system combined with a plurality of voice alarm devices, the fire alarm system comprising:
a control panel arranged to control one or more devices on an addressable fire alarm loop;
one or more detector devices arranged to send an alarm condition signal to the control panel upon detection of an alarm condition; and
one or more notification devices arranged to receive an alarm output signal from the control panel,
wherein the plurality of voice alarm devices are separate devices from the one or more detector devices and the one or more notification devices and are arranged to output an audible alarm voice message upon receipt of an alarm output signal from the control panel, the voice alarm devices comprising:
a loop connection interface for retroactively fitting the voice alarm devices to the fire alarm loop, arranged to connect the voice alarm devices to the fire alarm loop;
a processor, arranged to process signals received via the fire alarm loop;
at least one memory, arranged to store one or more audio files; and
a speaker, arranged to output the one or more audio files,
wherein the processors of the voice alarm devices are configured to process timing information so that voice alarm devices in close proximity to each other have synchronized audio; and
wherein the alarm output signal from the control panel comprises timing information, defining a point in time at which a selected audio file of the one or more audio files should be output by each of the plurality of voice alarm devices to synchronize the audio to be reproduced at different periods from each other.