WO2008027959A3 - Détection et localisation d'une intrusion dans un périmètre à l'aide de variables composites issues de mesures de phase - Google Patents

Détection et localisation d'une intrusion dans un périmètre à l'aide de variables composites issues de mesures de phase Download PDF

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Publication number
WO2008027959A3
WO2008027959A3 PCT/US2007/077101 US2007077101W WO2008027959A3 WO 2008027959 A3 WO2008027959 A3 WO 2008027959A3 US 2007077101 W US2007077101 W US 2007077101W WO 2008027959 A3 WO2008027959 A3 WO 2008027959A3
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WO
WIPO (PCT)
Prior art keywords
phase
disturbance
location
composite
detection
Prior art date
Application number
PCT/US2007/077101
Other languages
English (en)
Other versions
WO2008027959A2 (fr
Inventor
Jayantilal S Patel
Zhizhong Zhuang
Yuri Zadorozhny
Francesco A Annetta
Original Assignee
Optellios Inc
Jayantilal S Patel
Zhizhong Zhuang
Yuri Zadorozhny
Francesco A Annetta
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 Optellios Inc, Jayantilal S Patel, Zhizhong Zhuang, Yuri Zadorozhny, Francesco A Annetta filed Critical Optellios Inc
Priority to US12/438,877 priority Critical patent/US8395782B2/en
Publication of WO2008027959A2 publication Critical patent/WO2008027959A2/fr
Publication of WO2008027959A3 publication Critical patent/WO2008027959A3/fr

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
    • G08B13/122—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a perimeter fence
    • G08B13/124—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a perimeter fence with the breaking or disturbance being optically detected, e.g. optical fibers in the perimeter fence
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier
    • G08B13/186—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier using light guides, e.g. optical fibres
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2491—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field
    • G08B13/2497—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field using transmission lines, e.g. cable

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Transform (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)

Abstract

Une perturbation, telle qu'une vibration due à une activité humaine, est localisée le long d'une structure guide d'ondes à fibre optique (301-304) au moyen de deux interféromètres (801, 802) du même type ou de types différents, tels que des interféromètres de Mach-Zehnder, Sagnac et Michelson. Des signaux de porteuse issus d'une source (101) sont décomposés au niveau des entrées (201, 202) des interféromètres et recombinés au niveau des sorties (701, 702) après s'être propagés dans une zone de détection (401) dans laquelle des variations de phase sont produites sous l'effet de la perturbation (501). Des récepteurs (901, 902) sensibles à la phase détectent des relations de phase (1001, 1002) entre les signaux de porteuse au fil du temps. Un processeur (1101) combine les relations de phase en signaux composites en fonction d'équations qui diffèrent selon les configurations d'interféromètres, un retard ou un rapport entre les signaux composites représentant l'emplacement de la perturbation. Les signaux détectés et composites sont dissociés, de sorte que le déplacement de phase puisse excéder la période de la porteuse et permettre la localisation de perturbations d'amplitudes variables.
PCT/US2007/077101 2004-06-15 2007-08-29 Détection et localisation d'une intrusion dans un périmètre à l'aide de variables composites issues de mesures de phase WO2008027959A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/438,877 US8395782B2 (en) 2004-06-15 2007-08-29 Detection and location of boundary intrusion, using composite variables derived from phase measurements

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US84159506P 2006-08-31 2006-08-31
US84151106P 2006-08-31 2006-08-31
US60/841,511 2006-08-31
US60/841,595 2006-08-31
US84508406P 2006-09-13 2006-09-13
US60/845,084 2006-09-13
US57048106A 2006-12-12 2006-12-12
US11/570,481 2006-12-12

Publications (2)

Publication Number Publication Date
WO2008027959A2 WO2008027959A2 (fr) 2008-03-06
WO2008027959A3 true WO2008027959A3 (fr) 2008-07-03

Family

ID=39136829

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Application Number Title Priority Date Filing Date
PCT/US2007/077101 WO2008027959A2 (fr) 2004-06-15 2007-08-29 Détection et localisation d'une intrusion dans un périmètre à l'aide de variables composites issues de mesures de phase

Country Status (1)

Country Link
WO (1) WO2008027959A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011109895A1 (fr) * 2010-03-12 2011-09-15 Senstar Corporation Capteur interférométrique michelson de télémétrie avec terminaison combinée
CN104677596B (zh) * 2014-12-15 2017-11-21 哈尔滨工程大学 一种Sagnac环形光路内嵌入非平衡Mach‑Zehnder型光程扫描器的光学自相关仪
WO2022066059A1 (fr) * 2020-09-28 2022-03-31 Акционерное Общество "Институт "Оргэнергострой" Ligne de retard de partie linéaire d'avertisseur et procédé d'avertissement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5355208A (en) * 1992-06-24 1994-10-11 Mason & Hanger National, Inc. Distributed fiber optic sensor for locating and identifying remote disturbances
US6049506A (en) * 1999-01-29 2000-04-11 Lucent Technology Inc. Optical fiber Sagnac interferometer which identifies harmonically related nulls in the detected spectrum
US6667935B2 (en) * 1998-04-03 2003-12-23 The Board Of Trustees Of The Leland Stanford Junior University Apparatus and method for processing optical signals from two delay coils to increase the dynamic range of a sagnac-based fiber optic sensor array
US6778717B2 (en) * 1998-12-18 2004-08-17 Future Fibre Technologies Pty Ltd. Apparatus and method for monitoring a structure using a counter-propagating signal method for locating events
US6900897B2 (en) * 2003-04-02 2005-05-31 Luna Technologies, Inc. Apparatus and method for correcting errors generated by a laser with non-ideal tuning characteristics
US20050276611A1 (en) * 2004-06-15 2005-12-15 Patel Jayantilal S Distributed fiber sensor with detection and signal processing using polarization state management

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5355208A (en) * 1992-06-24 1994-10-11 Mason & Hanger National, Inc. Distributed fiber optic sensor for locating and identifying remote disturbances
US6667935B2 (en) * 1998-04-03 2003-12-23 The Board Of Trustees Of The Leland Stanford Junior University Apparatus and method for processing optical signals from two delay coils to increase the dynamic range of a sagnac-based fiber optic sensor array
US6778717B2 (en) * 1998-12-18 2004-08-17 Future Fibre Technologies Pty Ltd. Apparatus and method for monitoring a structure using a counter-propagating signal method for locating events
US6049506A (en) * 1999-01-29 2000-04-11 Lucent Technology Inc. Optical fiber Sagnac interferometer which identifies harmonically related nulls in the detected spectrum
US6900897B2 (en) * 2003-04-02 2005-05-31 Luna Technologies, Inc. Apparatus and method for correcting errors generated by a laser with non-ideal tuning characteristics
US20050276611A1 (en) * 2004-06-15 2005-12-15 Patel Jayantilal S Distributed fiber sensor with detection and signal processing using polarization state management

Also Published As

Publication number Publication date
WO2008027959A2 (fr) 2008-03-06

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