WO1992006456A1 - Home alarm device - Google Patents

Home alarm device Download PDF

Info

Publication number
WO1992006456A1
WO1992006456A1 PCT/NO1991/000123 NO9100123W WO9206456A1 WO 1992006456 A1 WO1992006456 A1 WO 1992006456A1 NO 9100123 W NO9100123 W NO 9100123W WO 9206456 A1 WO9206456 A1 WO 9206456A1
Authority
WO
WIPO (PCT)
Prior art keywords
signals
microprocessor
micro processor
pressure sensor
preprogrammed
Prior art date
Application number
PCT/NO1991/000123
Other languages
French (fr)
Inventor
Tom SØMBORG
Original Assignee
Nordic Technology A/S
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 Nordic Technology A/S filed Critical Nordic Technology A/S
Publication of WO1992006456A1 publication Critical patent/WO1992006456A1/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
    • 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
    • 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
    • G08B13/1681—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using infrasonic detecting means, e.g. a microphone operating below the audible frequency range

Definitions

  • the present invention is related to a burglar alarm device.
  • Home alarm devices reacting on sudden pressure varia ⁇ tions in a house or a room have been known and are in use. Basis for such devices is that the air pressure in a house is change suddenly when a burglar is breaking in such as when a window or door is crushed. Monitoring the air pressure and warning when a sudden change in the air pressure occurs thereby should indicate that a window or a door is broken.
  • the home alarm device comprises a pressure sensor and a microphone, both being connected with a micro processor.
  • An alarm transmitter is connected to the micro processor, giving auditive or visual signals, or a combination thereof.
  • the alarm transmitter furthermore also or exlusively can be connected with a remote monitoring central station.
  • the micro processor is such programmed that the received signals from the pressure sensor and the microphone are analyzed, compared with the time delay between the two types of signals, the amplitude of the signals, their duration and performance.
  • the alarm unit is activated only if the combination of these parameters indicates that there has been house braking, e.g. the combination of these parameters is not registered in the micro processor or if the combination is registered as being typical for the pressure change and sound caused by a housebreak- ing.
  • the micro processor is programmed with a number of combinations of signals from the microphone caused by sound and signals from the pressure sensor caused by air pressure change, the time difference between the peaks of the two signals, the peak levels and the course of the peak.
  • the micro processor will compare all signals from the microphone and the pressure sensor with the stored combinations. Threshold values for pressure changes and for noise may preferably be set by the user, thereby adapting the programme in the micro processor to the specific place where the house alarm is installed.
  • a house alarm device is well suited for monitoring apartments, private houses as well as office buildings and even parked cars.
  • the house alarm device also is well suited for monitoring buildings, such as outlaying houses, store houses etc., especially combined with a television monitoring.
  • the house alarm device according to the present invention easily can be connected to a remote alarm system, also in connection with or in addition to a remote television monitoring system.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

Home alarm device, characterized in that the device comprises an air pressure sensor, a sound microphone, both being connected with a microprocessor, an alarm transmitter being connected with the microprocessor, where the microprocessor is programmed to select received signals from the pressure sensor and the microphone, thereby to recognize the received signals as to the amplitude level, the duration of the signals, the time delay between the two signals and the course of the signals, to be a situation preprogrammed in the microprocessor as having natural causes, such as weather condition or man made noise, or to be a house breaking, in a latter case the microprocessor activates the alarm transmitter as the microprocessor also does if the combination of signals received is not found among the preprogrammed situations.

Description

Home alarm device
The present invention is related to a burglar alarm device.
Home alarm devices reacting on sudden pressure varia¬ tions in a house or a room have been known and are in use. Basis for such devices is that the air pressure in a house is change suddenly when a burglar is breaking in such as when a window or door is crushed. Monitoring the air pressure and warning when a sudden change in the air pressure occurs thereby should indicate that a window or a door is broken.
A long list of problems in connection with such devices, however, is the number of false alarms given as a result of the pressure sensor also registers sudden pressure changes caused by for example hard gust of wind on the house windowa as the case may be in storms.
With the sensitivity of such sensors, a pressure change may be registered corresponding to a broken window. To differ between gusts of wind and house breaking therefor has been difficult when only monitoring the air pressure.
It is the aim of the present invention to avoid false alarms of the above mentioned type, or at least minimize the number of such cases substantially. This is achieved with the home alarm device according to the present invention as described with the features stated in the claim.
The home alarm device according to the present inven¬ tion comprises a pressure sensor and a microphone, both being connected with a micro processor. An alarm transmitter is connected to the micro processor, giving auditive or visual signals, or a combination thereof. The alarm transmitter furthermore also or exlusively can be connected with a remote monitoring central station. The micro processor is such programmed that the received signals from the pressure sensor and the microphone are analyzed, compared with the time delay between the two types of signals, the amplitude of the signals, their duration and performance. The alarm unit is activated only if the combination of these parameters indicates that there has been house braking, e.g. the combination of these parameters is not registered in the micro processor or if the combination is registered as being typical for the pressure change and sound caused by a housebreak- ing.
The micro processor is programmed with a number of combinations of signals from the microphone caused by sound and signals from the pressure sensor caused by air pressure change, the time difference between the peaks of the two signals, the peak levels and the course of the peak. Hereby the micro processor will compare all signals from the microphone and the pressure sensor with the stored combinations. Threshold values for pressure changes and for noise may preferably be set by the user, thereby adapting the programme in the micro processor to the specific place where the house alarm is installed.
A house alarm device according to the present invention is well suited for monitoring apartments, private houses as well as office buildings and even parked cars. The house alarm device also is well suited for monitoring buildings, such as outlaying houses, store houses etc., especially combined with a television monitoring.
The house alarm device according to the present invention easily can be connected to a remote alarm system, also in connection with or in addition to a remote television monitoring system.

Claims

Patent Claim
Home alarm device, CHARACTERIZED IN the device comprises an air pressure sensor, a sound microphone, both being connected with a micro processor, an alarm transmitter being connected with the micro processor, where the micro processor is programmed to select received signals from the pressure sensor and the microphone, thereby to recognize the received signals as to the amplitude level, the duration of the signals, the time delay between the two signals and the course of the signals, to be a situation preprogrammed in the micro processor as having natural causes, such as weather condition or man made noise, or to be a house breaking, in a latter case the micro processor activates the alarm transmitter as the micro processor also do if the combination of signals received is not found among the preprogrammed situations.
PCT/NO1991/000123 1990-10-04 1991-09-25 Home alarm device WO1992006456A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO90904323A NO904323L (en) 1990-10-04 1990-10-04 HUSTYVERIALARM.
NO904323 1990-10-04

Publications (1)

Publication Number Publication Date
WO1992006456A1 true WO1992006456A1 (en) 1992-04-16

Family

ID=19893537

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1991/000123 WO1992006456A1 (en) 1990-10-04 1991-09-25 Home alarm device

Country Status (3)

Country Link
AU (1) AU8664091A (en)
NO (2) NO904323L (en)
WO (1) WO1992006456A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2694650A1 (en) * 1992-08-04 1994-02-11 Frizet Christian Parametric analyser for intruder detector using pressure sensor - includes microprocessor for memorising and comparing signals in order to set detection thresholds and sense abnormal signals
WO1995016250A1 (en) * 1993-12-07 1995-06-15 Jouni Mikael Utter Method and system for remote control and room supervision and use thereof
WO1999060359A1 (en) * 1998-05-15 1999-11-25 Omron Corporation Pressure sensor and door opening/closure monitoring system
US7376565B2 (en) 2003-12-15 2008-05-20 International Business Machines Corporation Method, system, and apparatus for monitoring security events using speech recognition

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6177994A (en) * 1994-02-25 1995-09-11 Telealarm Communications Pty Ltd System for the protection of people and/or property

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2103406A (en) * 1981-05-28 1983-02-16 Bedford Printed Circuits Limit Improvements in or relating to microprocessor alarm systems
GB2119984A (en) * 1982-03-12 1983-11-23 Guglielmetti Electronique Infra-sonic detector and alarms including same
EP0218765A1 (en) * 1985-10-14 1987-04-22 Microprotector Limited Detection and alarm system
DE3540675A1 (en) * 1985-11-16 1987-05-21 Alfred Struck Alarm system which responds to variation in air pressure in closed rooms
EP0286897A1 (en) * 1987-04-09 1988-10-19 Cerberus Ag Method and device for monitoring closed spaces
DE3731593A1 (en) * 1987-09-19 1989-03-30 Norbert Dipl Ing Schaaf Method for monitoring the interior spaces of buildings by detecting pressure fluctuations, and a sensor and signalling device for carrying out such a method
US4853677A (en) * 1988-07-20 1989-08-01 Yarbrough Alfred E Portable intrusion alarm
DE3930389A1 (en) * 1989-09-12 1991-03-21 Bernal Torantriebe Burglar alarm for enclosed rooms - has IC movement detector between far sound sensor and alarm generator

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2103406A (en) * 1981-05-28 1983-02-16 Bedford Printed Circuits Limit Improvements in or relating to microprocessor alarm systems
GB2119984A (en) * 1982-03-12 1983-11-23 Guglielmetti Electronique Infra-sonic detector and alarms including same
EP0218765A1 (en) * 1985-10-14 1987-04-22 Microprotector Limited Detection and alarm system
DE3540675A1 (en) * 1985-11-16 1987-05-21 Alfred Struck Alarm system which responds to variation in air pressure in closed rooms
EP0286897A1 (en) * 1987-04-09 1988-10-19 Cerberus Ag Method and device for monitoring closed spaces
DE3731593A1 (en) * 1987-09-19 1989-03-30 Norbert Dipl Ing Schaaf Method for monitoring the interior spaces of buildings by detecting pressure fluctuations, and a sensor and signalling device for carrying out such a method
US4853677A (en) * 1988-07-20 1989-08-01 Yarbrough Alfred E Portable intrusion alarm
DE3930389A1 (en) * 1989-09-12 1991-03-21 Bernal Torantriebe Burglar alarm for enclosed rooms - has IC movement detector between far sound sensor and alarm generator

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2694650A1 (en) * 1992-08-04 1994-02-11 Frizet Christian Parametric analyser for intruder detector using pressure sensor - includes microprocessor for memorising and comparing signals in order to set detection thresholds and sense abnormal signals
WO1995016250A1 (en) * 1993-12-07 1995-06-15 Jouni Mikael Utter Method and system for remote control and room supervision and use thereof
WO1999060359A1 (en) * 1998-05-15 1999-11-25 Omron Corporation Pressure sensor and door opening/closure monitoring system
US6522252B2 (en) 1998-05-15 2003-02-18 Omron Corporation Pressure sensor and door opening/closing monitoring system
US7376565B2 (en) 2003-12-15 2008-05-20 International Business Machines Corporation Method, system, and apparatus for monitoring security events using speech recognition
US7904299B2 (en) 2003-12-15 2011-03-08 Nuance Communications, Inc. Method, system, and apparatus for monitoring security events using speech recognition

Also Published As

Publication number Publication date
NO904323D0 (en) 1990-10-04
AU8664091A (en) 1992-04-28
NO904323L (en) 1992-04-06
NO923501D0 (en) 1992-09-09

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