Glass breakage detection system and method of configuration thereof

Patent metadata

Field	Value
Publication number	US-9349269-B2
Application number	US-201414147645-A
Country	US
Kind code	B2
Filing date	Jan 6, 2014
Priority date	Jan 6, 2014
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

A glass breakage detector system including an audio sensor, room-specific evaluation function generating functionality operative to generate at least one room-specific audio signal alarm evaluation function based on at least one of at least one acoustic parameter characterizing a room in which the audio sensor is located and at least two of the following environmental parameters: a size of the room, at least one size of at least one glass element in the room, at least one type of the at least one glass element in the room and at least one distance between the at least one glass element and the audio sensor, and alarm generation functionality operative to receive outputs from the audio sensor and to generate a glass breakage alarm when the outputs from the audio sensor fulfill criteria established by the at least one room-specific audio signal alarm evaluation function.

First claim

The invention claimed is:

1. A glass breakage detection system comprising:
room-specific evaluation function generating functionality operative, in an installation phase, to automatically generate at least one room-specific audio signal alarm evaluation function based on at least one generated acoustic parameter characterizing a room, said generated acoustic parameter characterizing said room being based on analysis of
an extent of the presence of acoustic resonance in said room; and

alarm generation functionality operative, in an operational phase following said installation phase, to receive outputs from a glass breakage detector located in said room and to generate a glass breakage alarm when said outputs from said glass breakage detector fulfill criteria established by said at least one room-specific audio signal alarm evaluation function.

2. A glass breakage detection system according to claim 1 and also comprising acoustic parameter generating functionality operative to generate said at least one acoustic parameter characterizing said room in which said glass breakage detector is located.

3. A glass breakage detection system according to claim 2 and also comprising:
sound receiving functionality operative to receive received sounds in said room, said received sounds resulting from emitted sounds having traveled through said room;
said acoustic parameter generating functionality being operative to generate said at least one acoustic parameter characterizing said room in which said glass breakage detector is located responsive to analysis of said emitted sounds and said received sounds.

4. A glass breakage detection system according to claim 3 and also comprising:
sound generating functionality operative to automatically generate said emitted sounds in said room.

5. A glass breakage detection system according to claim 3 and wherein said emitted sounds are generated manually in said room by an operator of said glass breakage detection system.

6. A glass breakage detection system according to claim 3 and wherein said analysis of said sounds comprises analysis of at least one of:
an extent of the presence of acoustic reflections in said room;
an extent of the presence of acoustic resonance in said room; and
an amplitude modulation as a function of frequency occurring as sound passes from said at least one glass element to said glass breakage detector in said room.

7. A glass breakage detection system according to claim 1 and wherein said at least one room-specific audio signal alarm evaluation function generated by said room-specific evaluation function generating functionality is transmitted to said alarm generation functionality by at least one of optic, acoustic and electronic transmission.

8. A glass breakage detection system according to claim 1 and wherein said at least one room-specific audio signal alarm evaluation function is also based on at least two of the following environmental parameters:
a size of said room in which said glass breakage detector is located;
at least one size of at least one glass element in said room in which said glass breakage detector is located;
at least one type of said at least one glass element in said room in which said glass breakage detector is located; and
at least one distance between said at least one glass element and said glass breakage detector.

9. A glass breakage detection system according to claim 8 and wherein at least one of said environmental parameters is automatically obtained by a camera.

10. A glass breakage detection system according to claim 8 and wherein at least one of said environmental parameters is calculated manually.

11. A glass breakage detection system according to claim 1 and wherein said glass breakage detector is an audio sensor.

12. A method for installing and operating a glass breakage detection system according to claim 11 and wherein at least one of said environmental parameters is automatically obtained by a camera.

13. A method for installing and operating a glass breakage detection system according to claim 11 and wherein at least one of said environmental parameters is calculated manually.

14. A glass breakage detection system according to claim 1 and also comprising said glass breakage detector.

15. A method for installing and operating a glass breakage detection system, said method comprising:
in an installation phase, automatically generating at least one room-specific audio signal alarm evaluation function based on at least one generated acoustic parameter characterizing a room, said generated acoustic parameter characterizing said room being based on analysis of:
an extent of the presence of acoustic resonance in said room; and

in an operational phase following said installation phase, receiving outputs from a glass breakage detector located in said room and generating a glass breakage alarm when said outputs from said glass breakage detector fulfill criteria established by said at least one room-specific audio signal alarm evaluation function.

16. A method for installing and operating a glass breakage detection system according to claim 15 and also comprising generating said at least one acoustic parameter characterizing said room in which said glass breakage detector is located.

17. A method for installing and operating a glass breakage detection system according to claim 16 and wherein generating said at least one acoustic parameter characterizing said room in which said glass breakage detector is located comprises:
generating emitted sounds in said room;
receiving received sounds in said room, said received sounds resulting from said emitted sounds after traveling through said room; and
analyzing said emitted sounds and said received sounds.

18. A method for installing and operating a glass breakage detection system according to claim 17 and wherein said generating emitted sounds in said room is performed manually.

19. A method for installing and operating a glass breakage detection system according to claim 17 and wherein said generating emitted sounds in said room is performed automatically.

20. A method for installing and operating a glass breakage detection system according to claim 17 and wherein said analyzing said emitted sounds and said received sounds comprises analyzing at least one of:
an extent of the presence of acoustic reflections in said room;
an extent of the presence of acoustic resonance in said room; and
an amplitude modulation as a function of frequency occurring as sound passes from said at least one glass element to said glass breakage detector in said room.

21. A method for installing and operating a glass breakage detection system according to claim 15 and wherein said at least one room-specific audio signal alarm evaluation function is also based on at least two of the following environmental parameters:
a size of said room in which said glass breakage detector is located;
at least one size of at least one glass element in said room in which said glass breakage detector is located;
at least one type of said at least one glass element in said room in which said glass breakage detector is located; and
at least one distance between said at least one glass element and said glass breakage detector.

22. A glass breakage detection system according to claim 15 and wherein said glass breakage detector is an audio sensor.

Assignees

• Tyco Fire & Security Gmbh

Inventors

• Zhevelev Boris
• Lahat Michael

Classifications

• G08B13/04 Primary

  by breaking of glass · CPC title

• G08B13/1672

  using sonic detecting means, e.g. a microphone operating in the audio frequency range · CPC title

• G08B29/22

  Provisions facilitating manual calibration, e.g. input or output provisions for testing; Holding of intermittent values to permit measurement · CPC title

• G08B21/18 Primary

  Status alarms (G08B21/02 takes precedence) · CPC title

• H04R29/00

  Monitoring arrangements; Testing arrangements {(for hearing aids H04R25/30; detection of loudspeaker connection H04R5/04; sound-field adaptation dependent on speaker detection H04S7/308)} · CPC title