EP0748492B1 - Procede et dispositif pour la detection, l'identification et la protection de biens notamment contre le vol - Google Patents

Procede et dispositif pour la detection, l'identification et la protection de biens notamment contre le vol Download PDF

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Publication number
EP0748492B1
EP0748492B1 EP95943258A EP95943258A EP0748492B1 EP 0748492 B1 EP0748492 B1 EP 0748492B1 EP 95943258 A EP95943258 A EP 95943258A EP 95943258 A EP95943258 A EP 95943258A EP 0748492 B1 EP0748492 B1 EP 0748492B1
Authority
EP
European Patent Office
Prior art keywords
signal
transmitter
receiver
tag
circuit
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.)
Expired - Lifetime
Application number
EP95943258A
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German (de)
English (en)
French (fr)
Other versions
EP0748492A1 (fr
Inventor
Véronique ROULLEAUX-ROBIN
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.)
TURQUOISE COMERCIO INTERNACIONAL Lda
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Individual
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Publication of EP0748492A1 publication Critical patent/EP0748492A1/fr
Application granted granted Critical
Publication of EP0748492B1 publication Critical patent/EP0748492B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2428—Tag details
    • G08B13/2431—Tag circuit details
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
    • G08B13/1436—Mechanical actuation by lifting or attempted removal of hand-portable articles with motion detection
    • 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
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2471—Antenna signal processing by receiver or emitter
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/181—Prevention or correction of operating errors due to failing power supply

Definitions

  • the present invention relates to a method and a device for detection, identification and protection property, in particular against theft.
  • the detector could consist, for example, of a accelerometric sensor or inclinometer capable of detecting a displacement or a change in inclination of the object.
  • Miniature beacons with the smallest footprint possible so that they can be fixed on objects of small dimensions, but having the largest autonomy possible.
  • beacons are mainly due to the consumption of the radio transmitter contained in the tag. Given the fact that the transmitter must have a minimum range that it is not possible to reduce, to increase the autonomy of the beacon by limiting its energy consumption, it is necessary to ensure that the transmission time of the alarm signal is reduced to the absolute minimum.
  • the use of a delay circuit limiting the issue period from the detection of the above parameter is not satisfactory. Indeed, when a device is authorized to change location at inside a room, but must not leave it (the exit door from the room being equipped with a receiver), the energy source of the beacon may be discharged as a result of a multiplicity of authorized trips without the receiver being used.
  • the object of the invention is therefore more particularly to remove these drawbacks.
  • the range of the receiver will be greater than that of the alarm signal transmitter, so as to be able to detect, over a wide area, the alarm signal emitted by beacons awakened by other means or tags responding directly to the detection of the parameter monitored and in a more narrow, for example a passage area, signals alarm emanating from beacons authorized to emit and which were awakened by the wake-up signal.
  • the device for implementing the previously described process should involve, from a share, at least one local unit, possibly coupled to a central unit, and comprising a transmitter circuit suitable for transmitting a wake-up signal and a receiver circuit suitable for receiving an alarm signal from a tag and, on the other hand, at least one tag associated with an object to protect including a receiver circuit capable receive the wake-up signal from the local unit and to transmit an alarm signal as a result of this reception, a detector capable of carrying out the detection of a significant parameter of a prohibited use of the object and to issue an authorization signal following this detection, and a logic control circuit capable of trigger the alarm signal twice provided that the enabling signal has been issued and the beacon receiver has received the wake-up signal.
  • the monitoring device involves, on the one hand, associated with each object to be protected, a beacon 1 comprising at least one high frequency emitter circuit 2 capable of generating, for example an electromagnetic wave having a frequency of 433.92 MHz, modulated in frequency modulation by a microcontroller and, on the other hand, distributed in the protected space, a plurality of local units R 1 , R 2 , R 3 , R 4 , provided with tuned receivers on the frequency of the transmitters of the beacons.
  • a beacon 1 comprising at least one high frequency emitter circuit 2 capable of generating, for example an electromagnetic wave having a frequency of 433.92 MHz, modulated in frequency modulation by a microcontroller and, on the other hand, distributed in the protected space, a plurality of local units R 1 , R 2 , R 3 , R 4 , provided with tuned receivers on the frequency of the transmitters of the beacons.
  • the different local units R 1 , R 2 , R 3 , R 4 are connected to a central unit UC comprising a processor associated with peripherals such as a keyboard / screen console CE, a printer I as well as possibly a remote transmission system Text-to-speech alarms.
  • a central unit UC comprising a processor associated with peripherals such as a keyboard / screen console CE, a printer I as well as possibly a remote transmission system Text-to-speech alarms.
  • the central processing unit UC can for example be designed from so as to manage eight independent zones, by through cards that manage a zone each.
  • Each zone comprises up to one hundred and twenty seven local units R 1 , R 2 , R 3 , R 4 connected to each other and to the central unit UC via of an RS 422 type network, for example at 9600 baud in closed or open loop.
  • the central unit UC ensures a permanent dialogue with the loops of local units according to a specific protocol.
  • the beacons 1 fitted to the objects to be monitored can understand, as shown in Figure 2, a circuit high frequency transmitter 2, using FM synthesizer connected to a message editor 3.
  • This transmitter circuit 2 just as the message editor 3, is supplied with from a power source 4 which can, by example, consisting of a battery, or an accumulator, for via a controllable switch 5 (represented here by a transistor) whose control is ensured by a logic circuit 6 (indicated by a door logic AND).
  • One of the two inputs of this logic circuit 6 is connected to a validation circuit comprising a detector 7, such that for example an accelerometric type motion detector and a monostable rocker 8 which allows issue an authorization signal of predetermined duration (monostable period) following the detection of a acceleration exceeding a predetermined threshold.
  • a validation circuit comprising a detector 7, such that for example an accelerometric type motion detector and a monostable rocker 8 which allows issue an authorization signal of predetermined duration (monostable period) following the detection of a acceleration exceeding a predetermined threshold.
  • the second input of logic circuit 6 is connected to the wake-up circuit output including a receiver electromagnetic wave 9 for receiving a signal alarm from a transmitter 10 associated with the units local R ( Figure 3).
  • the supply of the detector 7, the monostable 8, the logic circuit 6 and receiver 9 is permanently ensured by source 4.
  • the supply of the sender 2 and the message editor 3 is done by via the controllable switch 5.
  • detector 7 When detector 7 detects the monitored parameter, this detection causes the emission of a signal enabling by the monostable 8, when the receiver 9 receives a wake-up signal from the transmitter 10 of the local unit R on which it is located granted, logic circuit 6 causes the closure of switch 5. Circuits 2 and 3 are then fed so that editor 3 composes a message alarm which is transmitted to the local unit R by the transmitter 2.
  • This second alternative relates for example to the case of 1 beacons fitted to objects which can be moved to inside a room but which should not exit: the transmitter 10 of the local unit R is then arranged so that its range includes the passage volume of the access door to the room.
  • the tags 1 may furthermore include an energy level detection circuit batteries or batteries from the power source 4.
  • This circuit can include, as shown, a detector 13 able to measure the voltage across the source power supply 4 and which delivers a digital signal representative of this voltage, to the message editor 3, via a controllable switch 14. This the latter is controlled by a decoder 15 placed at the output of the wake-up signal receiver 9.
  • This level detection also requires a module transmitter / receiver M, which transmits, at the request of an operator, a coded signal for requesting information on the battery level, at destination of the receiver.
  • this signal When received by the receiver 9, this signal is decoded by the decoder 15 which causes the closing of the switches 5 and 14.
  • the detector 13 can then measure the voltage of the source and transmit corresponding digital information, to the message editor 3.
  • the transmitter 2 then transmits this information to the receiver of the module M which can display it or indicate only that the level of the source is sufficient or not.
  • the module M can also be designed so as to emit a coded signal to temporarily deactivate the beacon.
  • the decoder 15 could be designed so as to force the input of logic circuit 6 for a preset duration, at following reception by the receiver 9 of the signal deactivation.
  • the standalone beacons 1 could consist of detection clips such as those illustrated in the Figures 4 to 6 which are intended to be secured by pinching to the object you want to protect (for example a textile object) and which include a detection system designed to detect both an opening of the clamp and a tearing of the object which was secured to the clamp.
  • the clamp 20 consists of two arms 21, 22 articulated to each other by one end by means of a disengageable freewheel device 23 opposing the opening of the clamp 20 in the engaged position, and of which the other two ends are provided with two respective jaws 24, 25, one, 24, of these jaws carrying a support piece 26 elastically deformable in engagement with a detector D (by example a microswitch) coupled to a TV surveillance, E powered by an energy source renewable S.
  • a detector D by example a microswitch
  • this monitoring device comprises a radio transmitter E of limited range controlled by the detector D, so as to be able to pass from a standby state to a triggered state in which the transmitter E is authorized to transmit intended for a receiver R n of a surveillance network, such as that represented in FIG. 1, an alarm signal containing an identification message.
  • This transmission can be carried out either immediately after the change of state of the detector D, or after this change, following the reception by a TV receiver of a wake-up circuit associated with the clamp 20, of a signal of alarm clock sent by the transmitter device 10 associated with the receiver R n of the surveillance network.
  • the TV monitoring device, E associated with the clamp 20 may include timing means allowing only authorize transmitter E to transmit the alarm signal for a limited time from the change of state of the detector D.
  • the device according to the invention can also use as fixed beacons, for example communication devices. self-protected closure for protection against theft of objects contained in enclosures 32 closed by a sliding door 33.
  • such a device comprises a latch 31 disposed inside the enclosure 32 and designed to provide self-locking in position closed from door 33 and to move to the unlocked position under the effect of a control signal.
  • This lock 31 is ensured by means of a remote control device comprising a box of remote control 34 capable of transmitting an unlocking order coded and a receiver circuit 35, 36, 38 placed inside enclosure 32 and designed to receive the order from unlocking and decoding this order, so as to transmit at lock 31, after recognition of the code, a signal unlocking for a limited time.
  • a remote control device comprising a box of remote control 34 capable of transmitting an unlocking order coded and a receiver circuit 35, 36, 38 placed inside enclosure 32 and designed to receive the order from unlocking and decoding this order, so as to transmit at lock 31, after recognition of the code, a signal unlocking for a limited time.
  • the processing circuit here includes a first flip-flop monostable 38 triggered by the unlock signal and which maintains lock 31 in the unlocked state for a time sufficient to allow an operator to open door 33, and a second monostable flip-flop 49 triggered by the signal unlocking.
  • the logic circuit 40 triggers the emission by a radio transmitter 41 of an alarm signal intended for a receiver R n of the surveillance network located within its range in the case where the signal transmitted by the first monostable flip-flop 18 is in state 0, while the signal delivered by detector 39 which is then in state 1 indicates the open position of door 33.
  • the detector 39 can be connected to the monostable scale 49 reset input from so as to trigger an alarm during a reopening of door 33 during the metastable period of the flip-flop 49, triggered following a command from unlocking followed by first opening and then closing the door 33.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Automation & Control Theory (AREA)
  • Electromagnetism (AREA)
  • Signal Processing (AREA)
  • Burglar Alarm Systems (AREA)
EP95943258A 1994-12-28 1995-12-21 Procede et dispositif pour la detection, l'identification et la protection de biens notamment contre le vol Expired - Lifetime EP0748492B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9415765 1994-12-28
FR9415765A FR2728991A1 (fr) 1994-12-28 1994-12-28 Procede et dispositif pour la detection, l'identification et la protection de biens notamment contre le vol
PCT/FR1995/001713 WO1996020463A1 (fr) 1994-12-28 1995-12-21 Procede et dispositif pour la detection, l'identification et la protection de biens notamment contre le vol

Publications (2)

Publication Number Publication Date
EP0748492A1 EP0748492A1 (fr) 1996-12-18
EP0748492B1 true EP0748492B1 (fr) 2000-11-29

Family

ID=9470328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95943258A Expired - Lifetime EP0748492B1 (fr) 1994-12-28 1995-12-21 Procede et dispositif pour la detection, l'identification et la protection de biens notamment contre le vol

Country Status (5)

Country Link
US (1) US5838234A (enrdf_load_stackoverflow)
EP (1) EP0748492B1 (enrdf_load_stackoverflow)
DE (1) DE69519512D1 (enrdf_load_stackoverflow)
FR (1) FR2728991A1 (enrdf_load_stackoverflow)
WO (1) WO1996020463A1 (enrdf_load_stackoverflow)

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US5952920A (en) * 1998-06-29 1999-09-14 Mace Security International Currency anti-theft device
US6236858B1 (en) * 1998-06-30 2001-05-22 Avaya Technology Corp. Wireless terminal automatically alerting user upon wireless terminal entering a specified physical location
FR2784771B1 (fr) * 1998-10-16 2001-01-05 Veronique Roulleaux Robin Systeme de surveillance utilisable a la protection contre le vol du patrimoine informatique d'une entreprise
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DE10005443A1 (de) * 2000-02-08 2001-12-06 Siemens Gebaeudesicherheit Gmb Verfahren, System, Objektmelder und Ortungsmelder zur Diebstahlsicherung
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GB0107414D0 (en) * 2001-03-22 2001-05-16 Lawrenson Frank R Personal property alarm system
US7012524B2 (en) * 2003-03-07 2006-03-14 Omron Corporation Anti-intruder security system with sensor network and actuator network
US7474215B2 (en) * 2006-04-28 2009-01-06 Checkpoint Systems, Inc. Alarm systems, remote communication devices, and article security methods
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US7737845B2 (en) * 2005-12-23 2010-06-15 Invue Security Products Inc. Programmable key for a security system for protecting merchandise
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Also Published As

Publication number Publication date
DE69519512D1 (de) 2001-01-04
FR2728991A1 (fr) 1996-07-05
FR2728991B1 (enrdf_load_stackoverflow) 1997-02-28
US5838234A (en) 1998-11-17
WO1996020463A1 (fr) 1996-07-04
EP0748492A1 (fr) 1996-12-18

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