• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to an alarm device which comprises an RFID circuit for storing identification information coupled to an antenna adapted to receive and transmit to an RFID reader signals at the frequency of the RFID reader and a switch coupled to the RFID reader. antenna and activatable by a user, to adapt the antenna to the frequency of the RFID reader. The alarm device is characterized in that the RFID circuit, the antenna and the switch are arranged to be incorporated into an object carried by a user, and to enable the alarm to be activated discreetly.
    公开号:FR3035993A1
    申请号:FR1554078
    申请日:2015-05-06
    公开日:2016-11-11
    发明作者:Aliou Diallo；Robert Staraj；Thuc Philippe Le；Imen Cherif
    申请人:Eng Security；Centre National de la Recherche Scientifique CNRS；Universite de Nice Sophia Antipolis UNSA；
    IPC主号:
    专利说明:

    [0001] FIELD OF THE INVENTION The invention lies in the field of alarm systems, and in particular miniaturized wireless alarm systems. State of the art The classic prevention against aggression, burglaries and other delinquencies of the same nature is usually carried out using various tools such as video surveillance, airlock at the entrance of the stores, such as jewelery stores or shops. banks, or through the setting up of warning buttons often hidden under the counters in cash. All these devices prove ineffective when a person is faced with offenders and then unable to warn of his own dangerous situation. Security actors are constantly studying safe processes and methods that are more efficient and effective. However, existing devices are either visible, easily detectable, or impractical to trigger.
    [0002] There is then the need for a solution that overcomes the disadvantages of known approaches. The present invention meets this need. SUMMARY OF THE INVENTION An object of the present invention is to provide a reliable miniaturized wireless alarm system. Advantageously, the proposed device is limited in terms of electronic components thus offering a reduced manufacturing cost. The proposed system is autonomous in terms of energy which limits the need to recharge it. It is also discreet and not easily detectable for an outside observer. In a preferred embodiment, the alarm device of the invention comprises an RFID circuit for storing identification information coupled to at least one antenna adapted to receive and transmit to an RFID reader signals at the frequency RFID reader and a switch coupled to said at least one antenna and activatable by a user, for adapting the antenna to the frequency of the RFID reader. The alarm device is characterized in that the circuit, the at least one antenna and the switch are arranged to be incorporated into an object carried by a user. Advantageously, the RFID circuit is of passive or semi-active RFID type.
    [0003] Advantageously, the antenna is a dipole type antenna. Advantageously, the identification information is an identifier of said object.
    [0004] In a preferred embodiment, the frequency of the RFID reader is a frequency of the UHF band at 868 MHz. Advantageously, the antenna is a dipole antenna in inductive coupling with the RFID circuit. In one embodiment, a second loop antenna is inductively coupled to the first antenna.
    [0005] In a particular embodiment, the object is a ring or a ring worn on the finger by the user. In one embodiment, two radiating strands of the dipole antenna are surrounded around the ring, and the switch is placed on the inside of the user's hand. In another embodiment, the switch is placed on the stub of the dipole antenna. In a variant, the switch is placed on the upper surface of the ring. In another variant, the switch is placed on the inner face of the ring. DESCRIPTION OF THE FIGURES Various aspects and advantages of the invention will appear in support of the description of a preferred embodiment of the invention, but without limitation, with reference to the figures below: FIG. 1 is an example of the device of the invention; FIG. 2 illustrates a first variant of implementation of the device of FIG. 1; Figures 3a and 3b illustrate a second alternative embodiment of the device of Figure 1; Figure 4 illustrates an embodiment of the invention with two loop antennas.
    [0006] DETAILED DESCRIPTION OF THE INVENTION The invention addresses the safety of persons who exercise in occupations exposed to risks of aggression either indoors or outdoors. The following list, without being exhaustive, covers professions that may find it advantageous to use the device of the present invention: - Jewelers, jewelers, watchmakers and diamond dealers; 5 - tobacconists; - Craftsmen; - Traders in town, in supermarkets; - Gambling casino employees; - Liberal professionals; 10 - Shops selling and buying gold, watches and valuables; - Employees of: supermarket, supermarkets, pharmacies, ticket offices in all places, restaurant, bank and isolated agents, post office; - Prison supervisors; 15 - Journalists, reporters; - Military; - Close guard, security and guarding agents; - Law enforcement forces; - Emergency physicians, firefighters, home nurses.
    [0007] The invention may also be extended to the security of material goods and individuals in sectors where, for example, there is a requirement for secure access to buildings by authorized persons, police officers or deliverymen, for example. The invention also relates more generally to the safety of 25 people, for any situation where a person must trigger an alarm, such as a person jogging or skiing and facing a problem. In a related application, the device of the invention may be used to count the number of times the RFID antenna is set to the operating frequency of the reader. A particular example could be that of consumers of cigarettes in order to transmit information on their consumption, and who would thus have at hand the RFID device with the antenna identified by a user / smoker number, manually activatable on demand . Those skilled in the art understand that the applications derived from the device described are varied and linked by the same principle of rendering the antenna of the RFID on demand at the frequency of the reader. More generally, the invention proposes an alarm device which is worn by a user and whose activation is triggered by the user at his request in a discrete manner. In a preferred implementation, the device of the invention 100 as shown in FIG. 1 is composed of an RFID tag 102 coupled to an antenna 104 connected to a warning push button 106, all integrated in a dielectric ring 108. , or any medium having a ring-like form factor 15 for example to preserve a discrete character for the trigger device. Advantageously, the device is based on the principle of RFID-type short-range radio frequency interrogation and response systems. RFID devices are known to allow the identification of objects. The operating principle of an RFID system generally consists in that a tag coupled and adapted to an antenna, is affixed to an object, an animal or a man, to give him a unique identifier. An RFID system traditionally consists of three main components: a tag or tag, a reader, and a host computer. The tag, also called a transponder, consists of three major elements: a support (a card and / or other protective packaging), an antenna, and a chip with a memory containing mainly an identifier, permanently connected to the antenna. The RFID chip may be energy-independent, and the tag is said to be passive if the electromagnetic wave generated by the reader is sufficient to provide its power supply. The tag may be of a semi-passive or tag assisted type having just an added local energy source, such as a battery or capacitor, charged or rechargeable for example by photovoltaic cell or by mechanical movement energy in order to reboost the cell. return wave and have a higher range. The reader (interrogator) is an active device capable of identifying one or more tags within its coverage area by sending an electromagnetic wave via its own antenna. This wave has a frequency which is generally defined by an RFI standard (for example 868 MHz in Europe) and it contains an interrogation message to the tags. The signal emitted by the reader awakens the passive tags in which the data is stored. For communication to be established, the reader antenna must operate at the same frequency as the antenna of the tag. Advantageously, in an implementation of the present invention, the reader may be integrated into a watch or other object worn or not by a user, in order to be used as a relay to mobile telephone networks such as the known networks GSM900, 1800, UMTS, LTE for example. The host computer usually contains driver software suitable for the reader. The latter controls all the functions for sending the messages for interrogating, receiving and operating messages received, according to a protocol defined by the standard used. It can also host data monitoring / exploitation software. Advantageously, in an implementation of the present invention, the functions of the host computer may be a chip integrated into a small object such as a pendant watch, smartphone for example.
    [0008] In the example of the invention, the label or chip is of the passive or semi-active type. It contains a dedicated identification number which enables the recognition of its activation by a host computer which receives a message from the interrogating reader. The antenna or radiating element of the interrogated system is of extremely small size and manually activatable via the push button or switch.
    [0009] The operating mode of the device of the invention as illustrated in FIG. 1 is as follows: in the absence of pressing on the push button 106, the antenna 104 does not operate on the frequency of an interrogator reader RFID (not shown). The electronic circuit 102 of the label is short-circuited. The system is then mismatched and does not respond to a permanent interrogator signal from the RFID reader. - In the case of pressing the push button, to activate the alarm, the antenna 104 and the electronic circuit 102 become adapted to the frequency of the interrogator signal. Preferably, the operating frequency is that of the UHF band at 868 MHz. The signal received by the antenna 104 is then transmitted to the electronic circuit 102 which extracts sufficient energy for its operation, its clock and the content of the interrogation message. With the aid of the recovered energy, the electronic circuit 102 constructs its response message zo including the identifier that it stores and transmits it to the antenna 104. The antenna sends an electromagnetic wave at the right frequency to the reader interrogator. The interrogating system then receives the specific identifier of the ring that will be processed by the host computer and recognized as being an alert message. A remote intervention can then be triggered. On the basis of these principles, alternative implementations can be envisaged on the form and implementation of the antenna 104 for example, on the operating frequency of the passive RFID device, on the configuration of the push button 106 which can be adapted for example via a simple touch of the finger on the antenna. Furthermore, the device 3035993 of the invention may be adapted to one or more of its characteristics depending on the field of use. A major technical feature of the device of the invention is the miniaturized antenna 104 which must be as efficient as possible for its use in an object having a particular form factor offering a reduced volume or implementation area. Indeed, the integration of the antenna in the communicating object is the central element of the radio frequency link, and ensures the reliability of the expected communication. The miniaturization of the antennas is accompanied by a deterioration in their performance such as bandwidth and radiation gain. Moreover, the environment close to the antenna, consisting mainly of the body of the user can not be neglected. This sensitivity poses a major problem on the gain of the antenna and may cause changes in the input impedance. Also, the inventors had to find the best compromise between the electrical characteristics of the antenna, its radiation efficiency and the volume occupied by it. Thus for the example of a ring as illustrated in Figure 1, the volume reserved for the antenna can be restricted to a surface of 15x18 mm2. Several variants of implementation of a miniaturized antenna on this type of object are proposed. FIG. 2 illustrates a first variant of implementation of the device of FIG. 1 in which the antenna 104 is a dipole antenna 204 in inductive coupling with the circuit or RFID chip 206.
    [0010] The dipole or dipole antenna is an antenna consisting of two metal strands, fed in the middle and intended to transmit or receive electromagnetic energy. In this embodiment, the dipole antenna is modified so that its two radiating strands are surrounded around the ring of the ring. This option makes it possible to discretely add a switch 208 to the inside of the user's hand. When the switch is closed, the dipole antenna is "off" and does not transmit, and when the switch is open, the dipole antenna is "on" and can transmit the identifier of the ring to the reader.
    [0011] The switch is chosen in a precise manner in order to avoid mis-matching of the antenna. Indeed, given the short travel of the contactor, a switch up / down contact would risk not behave like a real open circuit but leave in place the equivalent of a capacity which would tend to reduce the difference 10 between enabled state and non-enabled state. Also, a switch in which the metallic contact portion slides instead of down may be preferable. A real implementation of this variant is to optimize the structure of the dipole antenna on a low permittivity Duroid substrate so as to obtain a good adaptation to the desired working frequencies (868 MHz). The two strands of the dipole are printed on a thin layer of Duroid, a thickness of 0.127 mm for example. The structure of the ring ring is made of plexiglass material. The RFID chip is a MuTRACKO type chip. The switch is chosen to have an open contact of the order of 3 mm. FIGS. 3a and 3b illustrate a second variant of implementation of the device of FIG. 1 in which the switch is placed directly on the stub of the dipole antenna, that is to say on the section of line which makes it possible to check the adaptation of the dipole. In FIG. 3a, the switch is placed on the upper surface of the ring. In the variant of Figure 3b, the switch is placed on the inner face of the ring. The embodiment of FIG. 3a consists in placing the switch 308 on the stub 310 without having to modify the initial structure of the dipole antenna 304, that is to say directly on the upper face of the antenna. Ring. The advantage of this method lies in its simplicity from the point of view of realization, but on the other hand the location of the switch on the upper face of the ring can cause problems to operate in a discrete manner the triggering of the alarm. In the embodiment of Figure 3b, the structure of the dipole antenna 304 is modified and the section of the stub 310 is wound on the ring of the ring to allow the location of the switch 308 on the inside. from the user's hand. In this variant, the antenna system is adapted when the switch is closed and the identifier of the ring can be sent to the reader. In a real implementation, the antenna is a loop antenna which makes it possible to adapt the entire antenna structure with respect to a power supply impedance close to the input impedance of the RFID chip and allowing for obtain a bandwidth of 7 MHz around 868 MHz, for a reflection coefficient lower than -10 dB. In another implementation mode, a second reduced-size loop antenna can be inductively coupled to the large loop antenna. The location of the switch on the large antenna 20 loop inside the hand of the user, allows to turn on / off the radiation of the entire structure whatever the geometry of the switch. FIG. 4 shows a view from above of the two loop antennas printed on the same thin substrate that can be folded over the structure of the ring carrying the device.
    [0012] The following table gives preferential dimensions for a concrete embodiment of the device: L = 29.4 mm H = 18 mm La = 5 mm H1 = 3 mm 11 3035993 R = 1.2 mm H2 = 5.4 mm P = 0 , 35 mm H3 = 6.6 mm P1 = 0.5 mm H4 = 4.6 mm W = 15 mm H5 = 2 mm Thus, the present description illustrates various non-limiting implementations of the invention. Examples have been described to allow a good understanding of the principles of the invention, but are in no way exhaustive and should allow the skilled person to make changes and implementation variants retaining the same principles. 12
    权利要求:
    Claims (1)
    [0001]
    REVENDICATIONS1. A wireless alarm device comprising: - an RFID circuit for storing identification information coupled to at least one antenna adapted to receive and transmit to RFID reader signals at the frequency of the RFID reader; and a switch coupled to said at least one antenna and activatable by a user, for adapting the antenna to the frequency of the RFID reader, the alarm device being characterized in that the circuit, the at least one antenna and the switch are arranged to be incorporated in an object worn by the user. 3. 4. 5. The device according to claim 1 wherein the RFID circuit is passive or semi-active RFID type. The device of claim 1 or 2 wherein the at least one antenna is a dipole type antenna. The device of any one of claims 1 to 3 wherein the identification information is an identifier of said object. The device of any one of claims 1 to 4 wherein the frequency of the RFID reader is a frequency of the UHF band at 868 MHz. 6. The device according to any one of claims 1 to 5 wherein the at least one antenna is a dipole antenna in inductive coupling with the RFID circuit. 7. The device of claim 6 further comprising a second antenna inductively coupled to the at least one antenna. 8. The device according to any one of claims 1 to 7 wherein the object is a ring or a ring worn on the finger by the user. 9. The device of claim 8 wherein two radiating strands of the dipole antenna are surrounded around the ring, and wherein the switch is placed on the inside of the user's hand. 10. The device of claim 8 wherein the switch is placed on the stub of the dipole antenna. 11. The device of claim 10 wherein the switch is placed on the upper surface of the ring. 12. The device of claim 10 wherein the switch 25 is placed on the inner face of the ring.
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    法律状态:
    2016-04-26| PLFP| Fee payment|Year of fee payment: 2 |
    2016-11-11| PLSC| Search report ready|Effective date: 20161111 |
    2017-04-27| PLFP| Fee payment|Year of fee payment: 3 |
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    2019-04-29| PLFP| Fee payment|Year of fee payment: 5 |
    2020-05-30| PLFP| Fee payment|Year of fee payment: 6 |
    2021-04-30| AU| Other action affecting the ownership or exploitation of an industrial property right|Effective date: 20210318 |
    2021-04-30| TP| Transmission of property|Owner name: UNIVERSITE COTE D'AZUR, FR Effective date: 20210318 Owner name: ENGINEERING SECURITY, FR Effective date: 20210318 |
    2021-04-30| TQ| Partial transmission of property|Owner name: UNIVERSITE COTE D'AZUR, FR Effective date: 20210318 Owner name: ENGINEERING SECURITY, FR Effective date: 20210318 |
    2021-07-12| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1554078A|FR3035993B1|2015-05-06|2015-05-06|MINIATURIZED WIRELESS ALARM DEVICE|FR1554078A| FR3035993B1|2015-05-06|2015-05-06|MINIATURIZED WIRELESS ALARM DEVICE|
    EP16723303.0A| EP3292546A1|2015-05-06|2016-05-04|Miniature wireless alarm device|
    US15/572,114| US10210744B2|2015-05-06|2016-05-04|Miniature wireless alarm device|
    PCT/EP2016/060098| WO2016177837A1|2015-05-06|2016-05-04|Miniature wireless alarm device|
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