WO2008014138B1 - Acoustic intrusion detection system - Google Patents

Acoustic intrusion detection system

Info

Publication number
WO2008014138B1
WO2008014138B1 PCT/US2007/073589 US2007073589W WO2008014138B1 WO 2008014138 B1 WO2008014138 B1 WO 2008014138B1 US 2007073589 W US2007073589 W US 2007073589W WO 2008014138 B1 WO2008014138 B1 WO 2008014138B1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
vector
detectors
emitters
intrusion
Prior art date
Application number
PCT/US2007/073589
Other languages
French (fr)
Other versions
WO2008014138A2 (en
WO2008014138A3 (en
Inventor
Reymond Welles
Original Assignee
Reymond Welles
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Reymond Welles filed Critical Reymond Welles
Publication of WO2008014138A2 publication Critical patent/WO2008014138A2/en
Publication of WO2008014138A3 publication Critical patent/WO2008014138A3/en
Publication of WO2008014138B1 publication Critical patent/WO2008014138B1/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
    • G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
    • G08B13/1672—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using sonic detecting means, e.g. a microphone operating in the audio frequency range

Abstract

An active acoustic intrusion detection system includes a pair of dipole emitters (180 degrees out of phase with each other) which emit an audible frequency f (preferably 1 KHz) and a pair of detectors preferably mounted 1/4 wavelength (3 inches) apart in the (non-echoic) nulls of the emitters. The detectors (microphones) spatially sample a stationary wave which is generated by the emitters (speakers). The output of each microphone is fed to an ADC and the digital output of the two ADCs is used to generate a four dimensional vector. At startup, a reference vector is determined and stored. During operation, vectors are sampled, filtered, smoothed and averaged periodically. When an average vector deviates from the reference vector by a set amount, an alarm is generated.

Claims

AMENDED CLAIMS received by the International Bureau on 25 September 2008 (25.09.2008)
1. An acoustic intrusion detection system, comprising: at least one sound emitter, emitting sound at a humanly audible frequency; at least one sound detector arranged relative to said at least one sound emitter such that said sound detector does not detect substantial sound directly from the at least one sound emitter but only detects substantial sound from the at least one sound emitter that is reflected; and a circuit coupled to said detector for indicating an intrusion.
2. The system according to claim 1, wherein: said at least one sound emitter comprises two sound emitters, and said at least one sound detector comprises two sound detectors.
3. The system according to claim 1, wherein: said at least one sound emitter comprises a tube and at least one speaker.
4. The system according to claim 3, wherein: said at least one sound emitter comprises a tube and two speakers arranged such that said tube and speakers resonate.
5. The system according to claim 2, wherein: said sound emitters are 180° out of phase relative to each other.
6. The system according to claim 2, wherein: said sound detectors are spaced apart from each other by one quarter of the wavelength of said audible frequency.
7. The system according to claim 1, wherein: said audible frequency is between 500 Hz to 2 KHz.
8. The system according to claim 5, wherein: said sound detectors are located in the non-echoic nulls of said sound emitters.
9. The system according to claim 1, wherein: said system detects intrusions around corners.
10. The system according to claim 1, wherein: said system detects non-movement intrusions.
11. The system according to claim 2, wherein: said circuit includes a digital circuit coupled to outputs of said detectors, said circuit including an active narrow-band digital filter.
12. The system according to claim 11, wherein: said active narrow-band digital filter comprises an analog-to-digital converter having an output coupled to a sample selector and sign changer having in turn an output coupled to an accumulator from which a periodic value is obtained.
13. The system according to claim 11, wherein: said circuit having an output which indicates ordinates of a four dimensional vector.
14. The system according to claim 13, further comprising: a storage means coupled to said digital circuit output for storing a reference vector; and arithmetic means coupled to said storage means, wherein said output periodically indicating ordinates of a new four dimensional vector and said arithmetic means compares the new four dimensional vector with the reference vector.
15. A method for detecting an intrusion into a protected space, comprising: generating a humanly audible tone; detecting a reference amplitude and phase of the tone when there is no motion and low noise the protected space; storing the reference amplitude and phase as a reference vector; periodically detecting a new amplitude and phase; storing the new amplitude and phase as a new vector; comparing the new amplitude and phase with the reference vector; and determining an intrusion based on said comparing.
16. The method according to claim 15, wherein: said step of comparing includes determining a difference vector from said reference vector and said new vector.
17. The method according to claim 16, wherein: said step of comparing includes comparing the magnitude of the reference vector with the magnitude of the difference vector.
18. A method for detecting an intrusion into a protected space, comprising: generating a humanly audible stationary wave having frequency /; detecting said audible stationary wave with two detectors spaced apart n/2 wavelengths plus approximately one quarter wavelength of/ where n > 0; and determining an intrusion based on said detecting.
19. An acoustic intrusion detection system, comprising: a plurality of sonic emitters; a plurality of sonic detectors; and a circuit coupled to said detectors for indicating an intrusion, wherein said plurality of sonic emitters are all coupled to a central clock and thereby all emit the same frequency /, and 500 Hz </< 2,000 Hz.
PCT/US2007/073589 2006-07-24 2007-07-16 Acoustic intrusion detection system WO2008014138A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/459,579 2006-07-24
US11/459,579 US7535351B2 (en) 2006-07-24 2006-07-24 Acoustic intrusion detection system

Publications (3)

Publication Number Publication Date
WO2008014138A2 WO2008014138A2 (en) 2008-01-31
WO2008014138A3 WO2008014138A3 (en) 2008-10-16
WO2008014138B1 true WO2008014138B1 (en) 2008-12-11

Family

ID=38970897

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/073589 WO2008014138A2 (en) 2006-07-24 2007-07-16 Acoustic intrusion detection system

Country Status (2)

Country Link
US (1) US7535351B2 (en)
WO (1) WO2008014138A2 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8410923B2 (en) * 2008-11-25 2013-04-02 Randall Wang Single MCU-based motion detection, local alarm and supervisory arrangement for alarm system
KR101297409B1 (en) * 2009-12-14 2013-08-19 한국전자통신연구원 Sycurity system and method using measurement of acoustic field variation
KR101736911B1 (en) * 2010-12-07 2017-05-19 한국전자통신연구원 Security Monitoring System Using Beamforming Acoustic Imaging and Method Using The Same
KR101794733B1 (en) 2011-12-26 2017-11-09 한국전자통신연구원 Security and intrusion monitoring system based on the detection of sound variation pattern and the method
US9594163B2 (en) * 2013-04-15 2017-03-14 Electronics And Telecommunications Research Institute Security and surveillance system and method
TWI628454B (en) * 2014-09-30 2018-07-01 財團法人工業技術研究院 Apparatus, system and method for space status detection based on an acoustic signal
US10345445B2 (en) * 2015-11-02 2019-07-09 Semiconductor Components Industries, Llc Circuit for acoustic distance measuring
JP6922904B2 (en) * 2016-05-31 2021-08-18 Ａｇｃ株式会社 Fluororesin manufacturing method
CN106228718B (en) 2016-09-26 2018-01-05 上海小蚁科技有限公司 System and method for detecting security threat by network
US9997035B1 (en) 2017-03-01 2018-06-12 Samuel L. Thomasson Acoustic security system and method
US11197119B1 (en) 2017-05-31 2021-12-07 Apple Inc. Acoustically effective room volume
US10726689B1 (en) * 2019-03-13 2020-07-28 Ademco Inc. Systems and methods for leveraging internet-of-things devices in security systems
EP4086868B1 (en) * 2021-05-07 2024-01-31 MUSE Electronics GmbH Method and apparatus for detecting and classifying a defect of a housing
US11589177B2 (en) * 2021-06-16 2023-02-21 Jae Whan Kim Apparatus for monitoring a space by using acoustic web

Family Cites Families (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754222A (en) 1971-12-13 1973-08-21 Webster Electric Co Inc Intrusion detection device utilizing low frequency sound waves and phase detection techniques
US3974489A (en) 1972-08-30 1976-08-10 Bleeker George H Centralized monitor and alarm system for monitoring remote areas with acoustical electric transducers
US3828336A (en) 1973-07-12 1974-08-06 Dynamics Corp Massa Div Intrusion alarm system with improved air turbulence compensation
US4097853A (en) 1976-09-20 1978-06-27 Milwaukee Resistor Corporation Means for distinguishing motion from noise in an intrusion alarm system
US4196423A (en) 1978-08-09 1980-04-01 The United States Of America As Represented By The United States Department Of Energy Acoustic emission intrusion detector
US4229811A (en) 1978-11-09 1980-10-21 General Electric Company Intrusion detection method and apparatus
US4386343A (en) 1978-11-20 1983-05-31 Shiveley James T Acoustic emission intruder alarm system
JPS5748192A (en) 1980-09-04 1982-03-19 Nakanishi Engineering Kk Warning device
US4479113A (en) 1982-01-20 1984-10-23 The United States Of America As Represented By The United States Department Of Energy Compensated intruder-detection systems
DE3369019D1 (en) 1982-10-01 1987-02-12 Cerberus Ag Infrared detector for spotting an intruder in an area
SU1196693A1 (en) 1982-11-10 1985-12-07 Всесоюзный Научно-Исследовательский Институт Полиграфического Машиностроения Vibrator power supply
CH667343A5 (en) 1984-02-13 1988-09-30 Cerberus Ag METHOD AND CIRCUIT FOR THE FUNCTIONAL CONTROL OF ULTRASONIC ALARM SYSTEMS.
US4719452A (en) 1984-06-20 1988-01-12 Bluegrass Electronic Audio signal generator
US4661936A (en) 1984-11-26 1987-04-28 Gte Government Systems Corporation Apparatus for and method of doppler motion detection with standing wave drift compensation
FR2574576B1 (en) 1984-12-12 1987-02-27 Metravib Sa METHOD AND DEVICE FOR PROTECTING PREMISES FROM INTRUSION
US4609909A (en) 1985-03-04 1986-09-02 Gte Government Systems Corporation Multimode perimeter intrusion detection system
CH676519A5 (en) 1988-06-28 1991-01-31 Cerberus Ag
US4991146A (en) 1989-11-30 1991-02-05 Deere & Company Intrusion detection system
RU2006950C1 (en) 1991-04-22 1994-01-30 Зорин Александр Дмитриевич Alarm transmitter
RU2031445C1 (en) 1991-10-17 1995-03-20 Григорий Васильевич Маскаев Protection signalling apparatus
DE69111450T2 (en) 1991-11-15 1996-01-04 Marry Saqr Majed El Intrusion detection device.
FR2691822B1 (en) 1992-05-26 1994-07-08 Valeo Electronique METHOD AND SYSTEM FOR ALARM BY ANALYSIS OF A SENSOR RECEPTION SIGNAL.
RU2053561C1 (en) 1992-08-10 1996-01-27 Григорий Васильевич Маскаев Signalization system for protecting from intrusion
US5323141A (en) 1992-10-16 1994-06-21 C & K Systems, Inc. Glass break sensor having reduced false alarm probability for use with intrusion alarms
RU2019869C1 (en) 1992-12-28 1994-09-15 Производственно-коммерческая фирма "SКЕМ" Gear for alarm system
US5396217A (en) 1993-02-01 1995-03-07 General Motors Corporation Phase shift analysis for vehicle intrusion detection
US5355350A (en) 1993-05-24 1994-10-11 Bass Henry E Passive acoustic tornado detector and detection method
US5519669A (en) * 1993-08-19 1996-05-21 At&T Corp. Acoustically monitored site surveillance and security system for ATM machines and other facilities
RU2094852C1 (en) 1995-02-09 1997-10-27 Акционерное общество закрытого типа Частное охранное предприятие "Феникс" Security alarm device
FR2731541B1 (en) 1995-03-08 1997-08-08 Paul Bertrand ACOUSTIC INTRUSION DETECTION METHOD AND DEVICE
DE19533192A1 (en) 1995-09-08 1997-03-13 Kiekert Ag Internal monitoring for motor vehicle intruder alarm
RU2103742C1 (en) 1995-09-22 1998-01-27 Государственное научно-производственное предприятие "Аура-Алиф" Guarding radio system which uses noise-like signals
US5608377A (en) 1995-10-20 1997-03-04 Visonic Ltd. Acoustic anti-tampering detector
US5696489A (en) 1996-01-11 1997-12-09 Lockheed Martin Energy Systems, Inc. Wireless boundary monitor system and method
GB2310720B (en) 1996-02-29 2000-07-12 Denso Corp Intrusion detecting apparatus for a vehicle
US5828626A (en) 1997-01-30 1998-10-27 Otincon Corporation Acoustic object detection system and method
IL121068A (en) 1997-06-12 2000-11-21 Visonic Ltd Method and apparatus for detecting the presence of a moving object in a detection area
US6236313B1 (en) 1997-10-28 2001-05-22 Pittway Corp. Glass breakage detector
EP1039313A1 (en) 1999-03-17 2000-09-27 Valeo Services Limited Intrusion detection process and device
RU2150750C1 (en) 1999-04-16 2000-06-10 Закрытое акционерное общество "РИЭЛТА" Alarm security device
US6631096B2 (en) 2001-02-02 2003-10-07 Trw Inc. Method and apparatus for detecting intrusion and non-intrusion events
US6592375B2 (en) * 2001-02-09 2003-07-15 Midway Games West Inc. Method and system for producing engine sounds of a simulated vehicle
JP2003036483A (en) 2001-07-25 2003-02-07 Iwata Electric:Kk Alarm signal output device
JP2004122946A (en) 2002-10-02 2004-04-22 Toyota Motor Corp Intruding object detection device
US8457324B2 (en) * 2005-08-16 2013-06-04 Honeywell International Inc. Directional speaker system

Also Published As

Publication number Publication date
US20080018461A1 (en) 2008-01-24
WO2008014138A2 (en) 2008-01-31
WO2008014138A3 (en) 2008-10-16
US7535351B2 (en) 2009-05-19

Similar Documents

Publication Publication Date Title
WO2008014138B1 (en) Acoustic intrusion detection system
US8194881B2 (en) Detection and suppression of wind noise in microphone signals
EP2068309A1 (en) Sound input device
JP2008300894A (en) External section specified sound recognition method of headset with microphone and headset with microphone
US9609416B2 (en) Headphone responsive to optical signaling
US20160093200A1 (en) Battery-powered device having a battery and loud sound detector using passive sensing
JP5446745B2 (en) Sound signal processing method and sound signal processing apparatus
WO2005045457B1 (en) Pool monitoring
US10741156B2 (en) Sound pickup device and output method thereof
JP2008071211A (en) Apparatus for sensing and notifying danger by voice
KR20180006457A (en) Sound alarm detector
US20220223137A1 (en) Systems and methods for on ear detection of headsets
JP2007181098A (en) Sound emitting and collecting apparatus
CN105323679A (en) Microphone device
JP2010083437A (en) Device and method for determining abnormality
CN104658193B (en) Utilize the ambient conditions detector for the processing for being passed to audible order for being followed by speech recognition
WO2011010494A1 (en) Object detection device and baffle
JP2009089133A (en) Sound emission and collection device
US20090208036A1 (en) Magnetic alert detector
JP4293884B2 (en) Stereo microphone device
KR200238925Y1 (en) Potable metal-detector by hall-sensor
RU2598602C2 (en) System for determining state of alarm for limited space (versions)
WO2023166836A1 (en) Sound collecting method and sound collecting device
JP2003111186A (en) Microphone apparatus
JP2009087158A (en) Intrusion sensor and anti-theft system

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07840413

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

NENP Non-entry into the national phase

Ref country code: RU

122 Ep: pct application non-entry in european phase

Ref document number: 07840413

Country of ref document: EP

Kind code of ref document: A2