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MD298Z - Fiber-optic intrusion alarm system - Google Patents

Fiber-optic intrusion alarm system Download PDF

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Publication number
MD298Z
MD298Z MDS20100037A MDS20100037A MD298Z MD 298 Z MD298 Z MD 298Z MD S20100037 A MDS20100037 A MD S20100037A MD S20100037 A MDS20100037 A MD S20100037A MD 298 Z MD298 Z MD 298Z
Authority
MD
Moldova
Prior art keywords
fiber
speckle patterns
optic
consecutive
warning alarm
Prior art date
Application number
MDS20100037A
Other languages
Romanian (ro)
Russian (ru)
Inventor
Ион КУЛЯК
Юрие НИСТОР
Михай ЙОВУ
Андрей АНДРИЕШ
Артур БУЗДУГАН
Виорел ЧОРНЯ
Анатол ПРЕПЕЛИЦА
Original Assignee
Институт Прикладной Физики Академии Наук Молдовы
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 Институт Прикладной Физики Академии Наук Молдовы filed Critical Институт Прикладной Физики Академии Наук Молдовы
Priority to MDS20100037A priority Critical patent/MD298Z/en
Publication of MD298Y publication Critical patent/MD298Y/en
Publication of MD298Z publication Critical patent/MD298Z/en

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  • Alarm Systems (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

The invention relates to optoelectronics, namely fiber-optic sensors and protection systems and can be used to protect buildings and territories, depositories of chemical substances and radioactive waste, as well as military, industrial and other objects.The fiber-optic intrusion alarm system includes a coherent light source (1), coupled with a segment of multimode optic fiber (2), a photodetector (3) and a warning alarm shaper (5), in the capacity of which is used a computer, containing a numerical matrix differentiator (9) of two consecutive speckle patterns, an adder (10) of the corresponding difference signals of each two consecutive speckle patterns and a comparator (11), connected in parallel to a warning alarm trip level setting unit (12). The comparator (11) forms the alarm signal when the sum of difference signals of two consecutive speckle patterns exceeds the predetermined warning alarm trip level. The photodetector (3) is placed in the far field of the optical fiber (2) coaxially with it and is made as a CCD (Charge-Coupled Device) for recording of speckle patterns in the far field of the fiber (2) at a rate of F frames per second. To ensure the maximum value of the signal to noise ratio, the F speckle pattern frame recording rate is chosen according to condition: 1 ≤ F ≤ 5 frames per second.The result of the invention is to increase the operational efficiency, to reduce the probability of false signals and the effects of electromagnetic noises.
MDS20100037A 2010-03-03 2010-03-03 Fiber-optic intrusion alarm system MD298Z (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MDS20100037A MD298Z (en) 2010-03-03 2010-03-03 Fiber-optic intrusion alarm system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MDS20100037A MD298Z (en) 2010-03-03 2010-03-03 Fiber-optic intrusion alarm system

Publications (2)

Publication Number Publication Date
MD298Y MD298Y (en) 2010-11-30
MD298Z true MD298Z (en) 2011-07-31

Family

ID=45815239

Family Applications (1)

Application Number Title Priority Date Filing Date
MDS20100037A MD298Z (en) 2010-03-03 2010-03-03 Fiber-optic intrusion alarm system

Country Status (1)

Country Link
MD (1) MD298Z (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113643494A (en) * 2021-06-15 2021-11-12 瑞合航天(北京)科技有限公司 Foreign matter intrusion optical fiber sensing network and using method thereof

Citations (12)

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RU2071179C1 (en) * 1992-11-03 1996-12-27 Сергей Викторович Дмитриев Method for transmission and receiving information through multiple-mode fiber-optical waveguide
RU2079888C1 (en) * 1994-08-04 1997-05-20 Константин Васильевич Васильев Fiber-optical security alarm system
RU2079880C1 (en) * 1994-09-19 1997-05-20 Тамази Георгиевич Самхарадзе Device for generation of signal which starts multiple- channel data monitoring system
EA200000751A1 (en) * 1998-01-23 2000-12-25 Петролеум Гео-Сервисез (Юс), Инк. METHOD AND SYSTEM USING FIBER OPTICAL SENSORS
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CN200958940Y (en) * 2006-07-21 2007-10-10 上海大学 System for measuring object three-dimensional deformation based on optical fiber and electronic phase-transfer speckle technology
GB2416835B (en) * 2004-08-04 2008-08-27 Statoil Asa Method and apparatus for studying surfaces
RU82359U1 (en) * 2008-12-03 2009-04-20 Открытое Акционерное Общество "Межгосударственная Акционерная Корпорация "Вымпел" DEVICE FOR DETECTING EXHAUST PRODUCTS OF GAS-DYNAMIC SYSTEMS IN THE ATMOSPHERE
RU2008106053A (en) * 2005-07-21 2009-08-27 Эрбус Дойчланд Гмбх (De) METHOD AND LIDAR SYSTEM FOR MEASURING THE TURBULENCE OF THE ATMOSPHERE CARRIED OUT ON BOARD OF AIRCRAFT AND ALSO IN AIRPORTS AND WIND POWER PLANTS
RU2008123705A (en) * 2008-06-10 2009-12-20 Александр Петрович Владимиров (RU) METHOD FOR MEASURING RELATIVE MOVEMENTS
MD172Y (en) * 2009-11-05 2010-03-31 Institutul De Fizica Aplicata Al Academiei De Stiinte A Moldovei Fiber-optical sensor for the registration of infra-red radiation
  • 2010

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2071179C1 (en) * 1992-11-03 1996-12-27 Сергей Викторович Дмитриев Method for transmission and receiving information through multiple-mode fiber-optical waveguide
RU2079888C1 (en) * 1994-08-04 1997-05-20 Константин Васильевич Васильев Fiber-optical security alarm system
RU2079880C1 (en) * 1994-09-19 1997-05-20 Тамази Георгиевич Самхарадзе Device for generation of signal which starts multiple- channel data monitoring system
EA200000751A1 (en) * 1998-01-23 2000-12-25 Петролеум Гео-Сервисез (Юс), Инк. METHOD AND SYSTEM USING FIBER OPTICAL SENSORS
WO2001020253A1 (en) * 1999-09-12 2001-03-22 Alphatech Co., Ltd. Method and apparatus for searching for object with speckle pattern light
KR20040025808A (en) * 2002-09-20 2004-03-26 사이타마 다이가쿠쵸 Deformation measuring method and apparatus using electronic speckle pattern interferometry
RU2363019C2 (en) * 2004-08-04 2009-07-27 Статоил Аса Method and device of analysing surface oscillations by means of movable spectroscopic interferometer
GB2416835B (en) * 2004-08-04 2008-08-27 Statoil Asa Method and apparatus for studying surfaces
RU2008106053A (en) * 2005-07-21 2009-08-27 Эрбус Дойчланд Гмбх (De) METHOD AND LIDAR SYSTEM FOR MEASURING THE TURBULENCE OF THE ATMOSPHERE CARRIED OUT ON BOARD OF AIRCRAFT AND ALSO IN AIRPORTS AND WIND POWER PLANTS
CN200958940Y (en) * 2006-07-21 2007-10-10 上海大学 System for measuring object three-dimensional deformation based on optical fiber and electronic phase-transfer speckle technology
RU2008123705A (en) * 2008-06-10 2009-12-20 Александр Петрович Владимиров (RU) METHOD FOR MEASURING RELATIVE MOVEMENTS
RU82359U1 (en) * 2008-12-03 2009-04-20 Открытое Акционерное Общество "Межгосударственная Акционерная Корпорация "Вымпел" DEVICE FOR DETECTING EXHAUST PRODUCTS OF GAS-DYNAMIC SYSTEMS IN THE ATMOSPHERE
MD172Y (en) * 2009-11-05 2010-03-31 Institutul De Fizica Aplicata Al Academiei De Stiinte A Moldovei Fiber-optical sensor for the registration of infra-red radiation

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
«Умные» датчики для интеллектуальных систем безопасности, http://www.gsm-guard.net/press4_1.html, regăsită în Internet la data de 2010.09.21 *
http://st.ess.ru/publications/4_2004/vvedensky/vvedensky.htm *
Введенский. Б. С. Системы охраны периметров с волоконно-оптическими сенсорами. "Специальная техника" № 4, 2004, regăsit pe *

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Publication number Publication date
MD298Y (en) 2010-11-30

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KA4Y Short-term patent lapsed due to non-payment of fees (with right of restoration)