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WO2013098862A1 - Procédé d'attribution d'un identifiant de zone à une barrière d'intrusion - Google Patents

Procédé d'attribution d'un identifiant de zone à une barrière d'intrusion Download PDF

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Publication number
WO2013098862A1
WO2013098862A1 PCT/IT2011/000422 IT2011000422W WO2013098862A1 WO 2013098862 A1 WO2013098862 A1 WO 2013098862A1 IT 2011000422 W IT2011000422 W IT 2011000422W WO 2013098862 A1 WO2013098862 A1 WO 2013098862A1
Authority
WO
WIPO (PCT)
Prior art keywords
transducer
intrusion detection
detection barrier
associating
barrier
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/IT2011/000422
Other languages
English (en)
Inventor
Vincenzo DE ASTIS
Alfredo GIGADA
Emanuele ZAPPA
Stefano Manzoni
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CIAS ELETTRONICA Srl
Original Assignee
CIAS ELETTRONICA Srl
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 CIAS ELETTRONICA Srl filed Critical CIAS ELETTRONICA Srl
Priority to PCT/IT2011/000422 priority Critical patent/WO2013098862A1/fr
Publication of WO2013098862A1 publication Critical patent/WO2013098862A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/003—Address allocation methods and details

Definitions

  • the present invention relates to a method of associating a zone identifier with an intrusion detection barrier as defined in the preamble of claim 1.
  • these security systems are based on transducers which sense the vibrations propagating over the intrusion detection barrier, as a result of atmospheric agents or break- in attempts (climbing, cutting, displacements and the like).
  • pre-wired transducers stiffen the cable/transducer system and complicate transport and handling during installation.
  • security systems with transducers operating in a distributed-constant arrangement i.e. systems characterized by a single transducer consisting of the cable itself, allowing use of the triboelectric effect or the piezoelectric effect or the capacitive effect to generate an electric signal proportional to the vibration of the fence upon which it is installed, generally involve difficulties in manufacture and especially handling during installation.
  • the cables that use the triboelectric effect require some rubbing to occur between an inner conductor and a surrounding sheath.
  • the cable shall be fixed to the fence with a number of cable ties, which shall ensure adhesion of the cable to the fence without crushing it.
  • an intrusion detection system using a lumped- or distributed-constant cables cannot determine with sufficient accuracy where the break-in attempt occurs therealong, then the security system cannot be mapped to ensure matching with the physical zones of the intrusion detection barrier, unless distinct cable sections are physically installed on the intrusion detection barrier.
  • an intrusion detection system using a lumped- or distributed- constant cables that can accurately measure where the break-in attempt occurs therealong, allows mapping of the security system to ensure matching with the physical zones of the intrusion detection barrier.
  • suitable software programs are provided to associate one zone or portion of the security system with a corresponding zone or portion of the intrusion detection barrier.
  • the program displays a map of the intrusion detection barrier and associates the transducers of the security system with predetermined or user-definable zones of the barrier, by assigning appropriate identification elements to such zones.
  • the present invention is based on the problem of providing a method of associating a zone identifier with an intrusion detection barrier, that has such functional features as to fulfill the above need, while obviating the above prior art drawbacks.
  • the present invention provides a quick method of associating a zone identifier in the perimeter of the intrusion detection barrier to the transducers that form the security system, that does not need the use of software, but simply requires an operator to physically hit the barrier.
  • the method of the present invention affords improved accuracy as well as quicker and more intuitive implementation as compared with prior art methods, in associating the perimeter identifier with its respective transducer/s.
  • the response of the latter can be adapted to any heterogeneity of the fences on which the sensors are installed.
  • MEMS sensors affords highly accurate, repeatable and stable measurements both with time and through different ambient conditions.
  • MEMS sensors in the intrusion detection systems allows generation of Volt signals that are not affected by the noise of the whole structure but only of a small part of it, i.e. the part around the MEMS sensor. This affords improved signal- to-noise ratio and improved analysis quality, and reduces or even eliminates false positives.
  • FIG. 1 shows a layout of an intrusion detection barrier with transducer means and processing means associated therewith;
  • FIG. 2 shows a single unique assembly of sensors that are part of the transducer means of the present invention.
  • numeral 1 designates an intrusion detection barrier
  • numeral 2 designates the transducer means
  • numeral 3 designates the processing means.
  • Figure 1 shows that:
  • the intrusion detection barrier 1 comprises, for instance, a metal fence or a perimeter wall 1A and/or a glazing, gates or doors IB but might also comprise armored cabinets (such as bank vaults), safes, safe-deposit boxes or the like, to define a perimeter that delimits the area to be protected;
  • armored cabinets such as bank vaults
  • safes safe-deposit boxes or the like
  • transducer means 2 include a plurality of transducer or sensor means 2 j with 0 ⁇ j ⁇ K, where K ranges from one to seven, which are in signal communication with one another via an electric cable 3C; each sensor 2 j is adapted to generate at least one electric signal V e i in response to a mechanical action on the intrusion detection barrier;
  • the processor means 3 are in signal communication with the plurality of sensors 2 j and are configured to receive the at least one electric signal V e i and to generate an output association signal S.
  • mechanical action on the barrier is intended to indicate actions that can apply a force on the barrier.
  • These mechanical actions include actions that can be exerted on the barrier by man, such as cutting, climbing, lifting, displacing, hitting, etc., and actions that can be exerted by weather agents, such as wind, heavy hitting rain, hail, as well as actions that can be exerted by animals.
  • the combination of the transducer means 2 and the transducer means 3 forms an intrusion detection system 12.
  • the plurality of sensors 2 j are divided into a plurality of unique sets SBSj with 0 ⁇ i ⁇ N, where N is for instance twenty, and where each unique set SBS; comprises at least one sensor 2 j .
  • the sensors of the unique set are spaced at a regular pitch P, e.g. a pitch P of five meters, but they might also be arranged with an irregular pitch P.
  • each unique set SBSj is composed of seven sensors 2j. Once the sensors 2 j have been associated with the barrier, such sensors 2 j are mapped or assigned a zone identifier Z w with 0 ⁇ w ⁇ N, matching with the physical zone of the intrusion detection barrier 1.
  • a perimeter defined by the intrusion detection barrier 1 will be identified, by the determination of one or more zones 3 ⁇ 4 of the perimeter, each zone being defined by one or more sensors 2 j .
  • each unique set SBS may be adapted to the particular conformation of the perimeter of the intrusion detection barrier 1, which means that the unique set SBSi may be reduced from seven sensors to a single sensors, through six, five, four, three or two sensors.
  • a single sensor is provided for the gate IB (or glazing or door), i.e. the unique set SBS 4 of a zone Z 4 is composed of a single sensor.
  • the inventive method includes the steps of:
  • Such hitting action may be carried out by an operator using his/her hands or a tool, directly on the cable 3B that connects the sensors 2 j or on the sensors 2j.
  • multiple sensors 2j may detect such hit, and multiple electric signals may be generated, to identify such hit.
  • the ability of the sensors to detect the accelerations induced thereon by the hitting actions will be utilized to determine the zones of the perimeter of the barrier 1.
  • the processing means 3 compare a characteristic value of the detected electric signals to a plurality of reference signals Sref during a predetermined period of time, and select the electric signal that shows the highest intensity values off the characteristic parameter.
  • first distance coordinates are assigned to such first transducer, allowing association thereof to the actual physical portion of the perimeter of the intrusion detection barrier 1.
  • the first sensor 2j is assigned the origin coordinates of the zone identifier of the corresponding zone or portion of the perimeter of the barrier 1.
  • the method comprises hitting the same or a different sensor of the plurality of sensors 2j a second time to generate at least one second electric signal V e i indicative of the second hit and processing the secon'd electric signal V e i by the processing means 3 to find the second transducer, i.e. the sensor that has been hit, or the transducer located proximate to the zone that has been hit.
  • the second transducer coincides with the first transducer, as shown in the zone Z 4 of Figure 1 , the same transducer 2 is hit again to generate the final coordinates which may coincide, for instance, with the initial coordinates.
  • the processing means 3 find the second transducer by comparing a characteristic value of the second electric signal to a plurality of reference signals during a predetermined period of time.
  • second distance coordinates are assigned to such second transducer, with reference to the portion of the perimeter of the intrusion detection barrier 1.
  • the method associates a first zone identifier Z w to the transducer means between the first and second space coordinates to uniquely identify a first zone Zw of the portion of the perimeter of the intrusion detection barrier 1.
  • the operator shall:
  • the processing means 3 are prepared to receive the first electric signal and the second electric signal, which means that, before the sensors 2 j are hit, the processing means shall be set to an operating state in which the received electric signals are identified as signals indicative of perimeter zones and not as actual break-in attempts along the perimeter.
  • processing signals 3 generate the association signal S every time the zone identifier Z ⁇ is associated with the corresponding portion of the perimeter of the barrier 1.
  • the plurality of sensors 2j is composed of Micro Electro- Mechanical Systems sensors (in short MEMS), which are adapted to generate the electric signal V e i in response to the hitting action on the intrusion detection barrier 1.
  • MEMS Micro Electro- Mechanical Systems sensors
  • MEMS sensor are uniaxial, biaxial or triaxial sensors and can generate an electric signal V e i of the order of a few Volts, e.g. three Volts, along each axis of the sensor. Therefore, this value is about three orders of magnitude larger than other prior art sensors, of either lumped or distributed constant type.
  • the signal V e i so generated is not affected by the noise of the entire structure, but only of a small part of it, i.e. the part around the MEMS signal that generated the signal Therefore, the signal V e i is not affected by the noise of the whole barrier, and its individual, local treatment improves the signal-to-noise ratio and hence the quality of the next analyses.
  • this signal V e i is indicative of the power or other synthesis parameters (determined over appropriate intervals of time) of the mechanical action exerted on the intrusion detection barrier.
  • a MEMS sensor 2 j experiences a lg acceleration, it will generate a signal V e i having a voltage of 1 V and if assignment of the zones 3 ⁇ 4 is performed with a reference threshold S ref 0.5 V higher than the idle level, which is supposed to be 0 V, then as the protection barrier 1 is hit with a hand or a tool where a zone delimitation is intended to be assigned, one or more sensors 2 j will generate a signal V e i e.g.
  • Sensor 1 0.1V
  • Sensor 2 0.2V
  • Sensor 3 0.6V
  • Sensor 4 0.85V
  • Sensor 5 0.3V and since the value of the reference signal S ref is set to 0.5V, such value is exceeded by the sensors Sensor 3 and Sensor 4.
  • the protection barrier 1 has been hit in a intermediate position between the two sensors Sensor 3 and Sensor 4 and the distance from either one of them will be inversely proportional to the received signal and namely, assuming that the distance between the two sensors is 5 m, the zone would be delimited as 0422
  • the zone may be assigned its identifier, in this case the identifier of the first zone Zi.
  • each of such sensors 2 j defines a portion of the perimeter of the intrusion detection barrier 1.
  • each of these sensors 2 j defines less than 1% of the overall perimeter of such barrier, preferably 0.5% of the perimeter of the barrier 1.
  • the processing means 3 also referring to Figure 2, include a peripheral analyzer 3A
  • each unique set SBSi comprises the peripheral analyzer 3A, so that each sensor 2 j of a particular unique set SBS; is in signal communication with such peripheral analyzer 3 A via its communication channel.
  • peripheral analyzer 3A of each unique set SBSi may coincide with one of the MEMS sensors 2 j .
  • the sensor j 4 coincides with the peripheral analyzer 3A.
  • all the remaining sensors 2 j of the unique set communicate with such peripheral analyzer 3A, i.e. with the peripheral analyzer AP (i.e. the microcontroller) via a particular communication channel.
  • each peripheral analyzer 3 A of each unique set SBSj comprises a mass storage medium for storing the distance coordinates of each sensor 2 j of the unique set from the previous and the next sensors and hence the coordinates of each zone Z w of the barrier 1.
  • the storage of the peripheral analyzer 3A stores the distance coordinates of each sensor 2 j of its unique set SBSi, which means that, in addition to the origin and end coordinates of the zone Zw, it also stores the coordinates of all the other sensors, each from the previous and next sensors.
  • each peripheral analyzer 3A of each unique sensor SBSi comprises firmware configured to:
  • An analysis interval Tanai is intended herein as the time during which the signal V e i is equal to or greater than the value of the reference signal/s S ref ,
  • the comparison is preferably made by the firmware of the peripheral analyzer AP by inferential analysis, according to a few fuzzy logic rules, which are adapted to recognize the characteristics of each mechanical action that may occur on the barrier, considering various disturbing events, which in turn generate detectable mechanical actions by the sensors 2 j on the barrier.
  • the firmware preferably processes the signals V e i so received for each of the three axes of the MEMS sensor, i.e. processes three acceleration signals V e i that each sensor MEMS generates, and measures, preferably in a continuous manner, the signals V e i that each MEMS 2 j detects. If the signals V e i have a higher intensity than the reference value at the start of the analysis (e.g. the reference value of the mechanical action that corresponds to a cut of the barrier), then the time in which the power value (or another selected parameter) is above said threshold during the analysis window Tanai-
  • the processing means 3 comprise a central analyzer 3B (also known as AC) which is interconnected with the plurality of unique sets SBSj, i.e. the transducers 2 j .
  • a central analyzer 3B also known as AC
  • the central analyzer 3B comprises second firmware configured to detect or relate the signals from each peripheral analyzer 3A of each unique set SBSj.
  • each sensor M j is automatically addressed upon startup of the system 12, when the position of each sensor 2j is sequentially detected based on the supply voltage as measured in each of them.
  • the central analyzer AC Since the sensors on the barrier 1 and particularly the peripheral analyzers AP are powered, via the connection cable 3C that interconnects them, by the central analyzer AC, the farther they are from their AC, the lower the voltage supplied to them due to the increasing voltage drop occurring as the supply line is extended. This allows the central analyzer AC to distinguish the various peripheral analyzers AP, upon startup, i.e. as the processing means 3 are turned on, and to assign them different addresses, that will be used from then on in the communication between the AC and all the APs connected thereto.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

La présente invention concerne un procédé d'association d'un identifiant de zone (Zw) à une barrière de détection d'intrusion (1, 1A, 1B) comprenant des moyens transducteurs (2j) et des moyens de traitement (3) en communication par signal avec lesdits moyens transducteurs (2j), ledit procédé comprenant les étapes de disposition desdits moyens transducteurs (2j) le long d'au moins une partie du périmètre de ladite barrière de détection d'intrusion (A, A1, 1B); d'établissement d'une communication par signal entre lesdits moyens transducteurs (2j) et lesdits moyens de traitement (3). Le procédé est caractérisé en ce qu'il comprend les étapes de frappe desdits moyens transducteurs (2j) une première fois et une seconde fois, pour générer au moins un signal électrique (Vei) indiquant ladite première action de frappe et au moins un second signal électrique (Vei) indiquant ladite seconde action de frappe, respectivement; de traitement desdits au moins premier et second signaux électriques par lesdits moyens de traitement (3) pour trouver un premier transducteur et un second transducteur desdits moyens transducteurs, respectivement, lesdits premier et second transducteurs étant trouvés sur la base d'une comparaison entre une valeur caractéristique dudit au moins un premier ou second signal électrique (Vel) à une pluralité de signaux de référence (Sref) durant une période de temps prédéterminée (Tanal); d'attribution de premières coordonnées de distance audit premier transducteur, en référence à ladite au moins une partie du périmètre de ladite barrière de détection d'intrusion; d'attribution de secondes coordonnées de distance audit second transducteur, en référence à ladite au moins une partie du périmètre de ladite barrière de détection d'intrusion; d'association d'un premier identifiant de zone (Zw) auxdits moyens transducteurs (2j) entre lesdites premières et secondes coordonnées de distance pour identifier de manière unique une première zone de ladite au moins une partie du périmètre de ladite barrière de détection d'intrusion.
PCT/IT2011/000422 2011-12-29 2011-12-29 Procédé d'attribution d'un identifiant de zone à une barrière d'intrusion Ceased WO2013098862A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IT2011/000422 WO2013098862A1 (fr) 2011-12-29 2011-12-29 Procédé d'attribution d'un identifiant de zone à une barrière d'intrusion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2011/000422 WO2013098862A1 (fr) 2011-12-29 2011-12-29 Procédé d'attribution d'un identifiant de zone à une barrière d'intrusion

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU170701U1 (ru) * 2016-09-05 2017-05-03 Федеральное государственное унитарное предприятие федеральный научно-производственный центр "Производственное объединение "Старт" им. М.В. Проценко" (ФГУП ФНПЦ ПО "Старт" им. М.В. Проценко") Звено виброчувствительного элемента на основе трибоэлектрического кабеля

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5982291A (en) * 1997-03-31 1999-11-09 Williams; Julie A. Electric fence security system
WO2007008431A2 (fr) * 2005-07-06 2007-01-18 The Penn State Research Foundation Capteur de detection et de localisation d'intrusion connecte en reseau a guide d'onde multibande
US20070120667A1 (en) * 2000-03-10 2007-05-31 Radio Systems Corporation Piezoelectric Cable-Based Monitoring System

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5982291A (en) * 1997-03-31 1999-11-09 Williams; Julie A. Electric fence security system
US20070120667A1 (en) * 2000-03-10 2007-05-31 Radio Systems Corporation Piezoelectric Cable-Based Monitoring System
WO2007008431A2 (fr) * 2005-07-06 2007-01-18 The Penn State Research Foundation Capteur de detection et de localisation d'intrusion connecte en reseau a guide d'onde multibande

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU170701U1 (ru) * 2016-09-05 2017-05-03 Федеральное государственное унитарное предприятие федеральный научно-производственный центр "Производственное объединение "Старт" им. М.В. Проценко" (ФГУП ФНПЦ ПО "Старт" им. М.В. Проценко") Звено виброчувствительного элемента на основе трибоэлектрического кабеля

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