• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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    • 专利摘要:

    公开号:ES2641771T9
    申请号:ES10778542.0T
    申请日:2010-10-15
    公开日:2018-01-03
    发明作者:Soeren Soerensen；Verner Falkenberg
    申请人:Alert Systems Aps；
    IPC主号:
    专利说明:

    An electronic anti-theft protection system
    The invention relates to an electronic system for anti-theft protection of products, said system comprising: a unit for detecting metallic material in a detection zone; a unit for detecting a magnetic or magnetizable material in a detection zone; and a control unit.
    Today, anti-theft protection of products in, for example, stores or supermarkets is achieved, to a large extent, by placing an alarm on individual products. Known systems to prevent theft usually include so-called burglar alarms that are set for store products.
    In clothing stores, the anti-theft protection is usually constituted by a two-part anti-theft alarm, in which one part comprises a tack that is inserted through the article of clothing and locked in the
    15 another part of the anti-theft protection. Also, the burglar alarm contains a unit that can be detected by an anti-theft mechanism located at the exit of the store. The blocking of the burglar alarm is released by a magnet, which is called the release, and the release is intended to take place at the cash register, after the purchase of the article of clothing.
    However, there is currently the problem that shop thieves bring their own magnet / release and, through it, remove the burglar alarm, with the consequence that the anti-theft mechanism is unable to detect the item stolen when the item goes through the anti-theft mechanism This usually occurs in store areas where, by decency, customers are not visually monitored, for example, in changing rooms or public restrooms.
    25 The protection of products against theft can also be achieved by, for example, a spiral, a magnet or a small radio transmitter housed in stickers placed on the products and having the particular ability to contain information, without battery, which is released when passes through a magnetic field or is exposed to a radio signal. By setting an alarm on each individual item, for example, in a supermarket with this type of anti-theft protection, it is also possible to register if the products for which it has not been paid go through selected points. This is usually done at cash registers or at exits as such, in stores.
    However, professional thieves are aware that such electronic anti-theft protections can be avoided by protecting stolen products from the environment by means of a radiation shield, the so-called "Faraday cage" that eliminates all electrical influence from outside or from inside. Normally, this usually
    35 be carried out quite simply by insulating, for example, a bag or a backpack / bag, with an inner layer of conductive material, such as, for example, aluminum foil, although, in principle, any conductive material can be used. Such an insulated receptacle effectively prevents any detection of the alarm products contained therein and, therefore, also prevents the discovery of any stolen product that may be present in the insulated container; Thus, such isolated receptacles, denominated in colloquial terms "booster bags" in English or "reinforced bags", are also the direct cause of a considerable loss of products in the retail sector.
    Therefore, nowadays metal detectors have been introduced that are capable of detecting such "reinforced bags" and, at present, an effective anti-theft protection of goods consists in using both sensors for
    45 detect the signals emitted by products with alarms, such as metal detectors to detect "reinforced bags".
    Metal detectors are well known to those skilled in the art and can be manufactured, for example, as described in US 6,133,829, JP 8 050 690 or EP 0 736 850 and, therefore, are not They will describe their functionalities in more detail.
    Magnet detectors are also well known to those skilled in the art and can be manufactured, for example, as described in US 3,971,983.
    55 However, normal steel cars are a problem, because they are also detected by metal detectors, so they emit "false alarms" every time a steel car goes through a metal detector.
    Therefore, there is a need for a system that minimizes the above inconveniences.
    This is achieved with the control unit according to claim 1.
    Hereby, an improved anti-theft protection system that can prevent false alarms is achieved.
    Embodiments of the invention will be provided in the independent claims.
    65 It is to be understood that the term "metallic material" comprises means that are normally considered


    magnetic, including, but not limited to, for example, foil, aluminum, austenitic stainless steel or gold and silver. Such materials can be detected by metal detectors, but not by detectors that detect magnetic / magnetizable materials. Magnetic materials are understood as materials that can be magnetized, including iron (Fe), nickel (Ni) and cobalt (Co).
    5 The terms "detection device, sensor or detector" are to be construed as electronic devices that may, in certain situations, provide deviations when they detect / measure magnetic or metallic objects in a given volume / area that may, therefore, be designated as the detection zone and / or detection / measurement area.
    Programming should not be interpreted as something that is necessarily related to software; instead, it can also mean the movement of the wires in a series of switches.
    Next, an embodiment of the invention will be explained with reference to the figures, in which
    Figure 1 is a schematic drawing of the Earth's magnetic field;
    Figure 2 shows, seen from above and schematically, how the Earth's magnetic field changes with a car;
    Figure 3 shows, seen from the side and in schematic view, how the Earth's magnetic field changes with a car;
    Figure 4 is a schematic drawing showing the functionality of a magnetic sensor;
    Figures 5A-5D schematically show how a customer carrying a backpack goes through an embodiment of a system according to the invention.
    Figure 1 shows a drawing of the Earth's magnetic field as it runs between the North Pole and the South Pole, and the invention contains a sensor that records the changes therein. Such sensors are known and used today in a version capable of measuring changes in the magnetic field in three dimensions, for example, for electronic compasses and their use in airplanes, mobile phones, current measurements on a cable, or for Traffic detection
    35 In this way, the sensor can measure the magnetic fields of the permanent magnets (for example, the Earth's magnetic field) and the electromagnetic fields generated by a current (AC or DC) in a cable.
    Figures 2 and 3 show schematically how the sensors (10) that have been deployed on a road can measure changes in the Earth's magnetic field when a car passes through them.
    Figure 4 shows an example of the registration of a moving magnet.
    The invention relates to a system that contains both a "magnetic" sensor and a sensor capable of detecting metallic materials by means of two antennas (1x transmitter (TX) and 1x receiver (RX)) that are normally
    45 installed as a door, for example, at the entrance or exit of a store. The metal sensor records all types of metals of a certain size and volume. The known anti-theft systems contain only one metal detector, and the purpose of this is to register the passage of bags, backpacks, bags or the like that are insulated / coated with, for example, aluminum foil. A drawback of such systems is that the cars are also detected by the system, so, consequently, they can be a source of false alarms.
    By combining a magnetic sensor with a sensor capable of detecting metallic materials, a system is achieved in which the control unit can be programmed to provide different deviations, depending on whether it is an aluminum-coated bag, or a car that runs through an area where both sensors make measurements. If it is such a bag, only the metal detector will provide deviations, while the two,
    55 that is, the metal detector and the magnetic detector, will provide deviations if an iron carriage passes through the common detection zone of the sensors. As mentioned above, the metal sensor detects, depending on its configuration, only metallic material larger than a certain size and, consequently, it is possible to transfer it with a bunch of keys or with a magnet in the pocket without The metal sensor records it.
    By providing the system with a suitable control unit, the system can be programmed to issue alarms, for example, only if a record of magnetic material, non-magnetic metallic material or both is achieved in a shared measurement area (detection zone ). Therefore, a system is achieved that, at a minimum, is able to distinguish between three situations:
    1. A reinforced bag that is lined with, for example, aluminum foil, with which only the detector


    metal will respond to it;
    2.  A magnet, which will only detect the magnetic sensor;
    3.  A car, which both types of sensor will register.
    5 Normally, the system control unit will be programmed so that the system does not issue an alarm when cars pass through the system; that is, when both sensors register an article (situation 3 above).
    Figures 5A-5D show an embodiment of a system according to the invention, through which a person carrying a backpack passes. The system comprises two antennas (1, 2) installed so that customers have to pass
    10 in the middle.
    In each of the two antenna systems (1, 2) there are arranged magnetic sensors (3) and metal sensors (1, 2), respectively; however, in the embodiment shown, neither is illustrated in detail, and the sensors are arranged so that they have a matching measurement area. In this way, the two types of
    The sensor will record when the carriage enters the shared measurement zone (see optionally Figure 5B (situation 3 above)) and, as mentioned above, the system will normally be configured so that, in this situation, the unit of Control does not issue an alarm.
    Thus, the system will record that the car exits the measurement area (see optionally Figure 5D), as the sensor
    20 magnetic will stop detecting its presence, in turn, only the metal detector / sensor will register the backpack (if it is coated with, for example, aluminum foil) when it is in the measurement area, as shown in the Figure 5D (situation 1 above), and here, the control unit has to issue an alarm, as a metal object / reinforced bag is present.
    25 If, instead of a covered backpack, the customer carries a magnet, the sequence will be: first register a car (situation 3) and then register the magnetic material / magnet (situation 2), and here, the control unit must Issue an alarm
    By means of a three-axis magnetic sensor / detection device, it is possible to calculate an angle relative to the object
    30 magnetic moving through the door. This means that it is possible to measure the direction in which the magnetic object moves through the door.
    Likewise, it is possible to install a three-axis magnetic sensor on each antenna. This provides the option to calculate the angle from each of the magnetic sensors / detection devices with respect to the object
    35 magnetic, and thus, carry out cross-marking. In this way, the location, or even the speed of a detected object can be determined. The control unit may also be programmed to ignore situations in which the speed or position of this object occurs in an area that is unreal for an object transported by a customer.
    40 By combining the information of the two detection systems, it is possible to configure a system in which you can choose between different functions and properties.
    • Metal detector without magnetic detection. This system works like the systems currently known.
    • Magnetic detection without metal detection. The system is designed for testers in 45 clothing stores.
    • Metal detection with magnetic detection, where the metal detector is used to register an aluminum-coated bag, and the combination is used to register the car, and the magnetic sensor is used to detect a magnet (situation 2).
    50 This last configuration can be used in clothing store testers (in which it is suspected that theft alarms are removed by means of magnetic releases brought from outside), and in which there is a large traffic flow of cars and / or Baby strollers.
    In this way, the system can be configured in the following ways:
    Metal MagneticCombinationSituationMetal systemMagnetic system
    On offOn offOn off Passage through or near the door (s)
    Metal Magnetic
    one 23
    SWITCHED ON OFFOFFReinforced bagYesOFF
    SWITCHED ON OFFOFFCarYesOFF
    SWITCHED ON OFFOFFMagnetDo notOFF
    SWITCHED ON OFFOFFReinforced bag + magnetYesOFF


    In the previous configuration, the magnetic detection system is turned off and serves as a conventional metal detection system.
    Metal MagneticCombinationSituationMetal systemMagnetic system
    On offOn offOn off Passage through or near the door (s)
    Metal Magnetic
    one 23
    OFF SWITCHED ON OFFReinforced bag OFFDo not
    OFF SWITCHED ON OFFCar OFFYes
    OFF SWITCHED ON OFFMagnet OFFYes
    OFF SWITCHED ON OFFReinforced bag + magnet OFFYes
    In the previous configuration, the metal detection system is turned off and the system serves as a system that detects the magnetic material.
    Metal MagneticCombinationSituationMetal systemMagnetic system
    On offOn offOn off Passage through or near the door (s)
    Metal Magnetic
    one 23
    SWITCHED ONSWITCHED ON OFFReinforced bagYesDo not
    SWITCHED ONSWITCHED ON OFFCarYesYes
    SWITCHED ONSWITCHED ON OFFMagnetDo notYes
    SWITCHED ONSWITCHED ON OFFReinforced bag + magnetYesYes
    In the previous configuration, both the metal detection system and the magnetic detection system are on, and by programming the control, the system can therefore respond to any of:
    • Reinforced bags, as they will provide unambiguous information from the detectors / sensors, namely: positive deviation for the metal and simultaneously negative deviation for the magnetic material.
    • Magnets, which will provide unequivocal information of the detectors / sensors, namely: positive deviation for the magnetic material and simultaneously negative deviation for the metals.
    • Bags reinforced with magnets and / or shopping carts / strollers, as both provide positive deviations for the magnetic material and metals.
    Under normal conditions, the control would be programmed so that, as in prior art systems, the
    20 alarm jump with reinforced bags. Although, unlike in the previous systems, it is possible, by the present invention, to provide a system that can also be used to emit an alarm in the event that magnets pass through; and also, a system that omits the issuance of an alarm when cars pass through.
    The invention is not limited to the embodiment shown but is set forth in the claims. 25

    权利要求:
    Claims (6)
    [1]
    1. An electronic system for the anti-theft protection of products, said system comprising:
    5 • a unit for detecting a metallic material in a detection zone;
    •  a unit for detecting a magnetic or magnetizable material in a detection zone; Y
    •  a control unit,
    the control unit being able to receive information from the units to detect metallic and magnetic material when one or both of these units detect a metallic or magnetic material, respectively, in a shared detection zone, and the control unit being programmed to :
    - issue an alarm that depends on whether it receives information about the detection of metallic or magnetic material; 15 - issue an alarm when it receives information on the detection of a metallic material, while simultaneously receiving no information on the detection of magnetic materials, and
     characterized by that
    - The system control unit is programmed so that the system does not issue an alarm when both systems register an item.
    [2]
    2. An electronic system for the anti-theft protection of products according to claim 1, characterized in that the control unit emits an alarm when the control unit does not receive information on the detection of metallic material, simultaneously receiving information on the detection of magnetic material in an area in
    25 which is possible to detect both magnetic and metallic materials.
    [3]
    3. An electronic system for the anti-theft protection of products according to claims 1-2, characterized in that the unit for detecting a magnetic material comprises a unit that is capable of detecting changes in the Earth's magnetic field.
    [4]
    4. An electronic system for the anti-theft protection of products according to claims 1-3, characterized in that the unit for detecting a magnetic material comprises a unit that is capable of detecting changes in the Earth's magnetic field in three dimensions.
    An electronic system for the anti-theft protection of products according to claims 1-4, characterized in that the system comprises at least two units for detecting a magnetic material; and why these units can each detect separately changes in the Earth's magnetic field in three dimensions.
    An electronic system for the anti-theft protection of products according to claims 1-5, characterized in that the system comprises at least two units for detecting a magnetic material; and why these units can each detect separately changes in the Earth's magnetic field in three dimensions; and because these units are arranged relative to each other so that the position of a magnetic / magnetizable material in their shared detection zone can be estimated by means of
    45 control unit.
    [7]
    7. An electronic system for the anti-theft protection of products according to claim 6, characterized in that the system comprises at least two units for detecting a magnetic material; and why these units can each detect separately changes in the Earth's magnetic field in three dimensions; and because
    50 these units are arranged relative to each other, so that the speed of a magnetic / magnetizable material in its shared detection zone can be estimated by the control unit.
    [8]
    8. An electronic system for the anti-theft protection of products according to claim 7, characterized in that
    the system comprises a screen; and because the screen provides information on whether the detection units 55 of a metallic and magnetic material detect those materials.


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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US27265909P| true| 2009-10-16|2009-10-16|
    US200961272659P|2009-10-16|
    DK200970160|2009-10-16|
    DKPA200970160|2009-10-16|
    PCT/DK2010/050272|WO2011044915A1|2009-10-16|2010-10-15|An electronic anti-theft protection system|
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