EP0701230A1 - System for simultaneous omnidirectional identification - Google Patents

System for simultaneous omnidirectional identification Download PDF

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Publication number
EP0701230A1
EP0701230A1 EP95480115A EP95480115A EP0701230A1 EP 0701230 A1 EP0701230 A1 EP 0701230A1 EP 95480115 A EP95480115 A EP 95480115A EP 95480115 A EP95480115 A EP 95480115A EP 0701230 A1 EP0701230 A1 EP 0701230A1
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EP
European Patent Office
Prior art keywords
identification
detection signal
entry
badge
transmission
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.)
Withdrawn
Application number
EP95480115A
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German (de)
French (fr)
Inventor
Jean-Louis Terny
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MU13 INGENIERIE
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MU13 INGENIERIE
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Publication date
Application filed by MU13 INGENIERIE filed Critical MU13 INGENIERIE
Publication of EP0701230A1 publication Critical patent/EP0701230A1/en
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • G08B3/1008—Personal calling arrangements or devices, i.e. paging systems
    • G08B3/1016—Personal calling arrangements or devices, i.e. paging systems using wireless transmission
    • G08B3/1083—Pager locating systems
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/20—Individual registration on entry or exit involving the use of a pass
    • G07C9/28—Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence

Definitions

  • the invention relates to a simultaneous omnidirectional identification installation.
  • Detection and identification systems are intended in particular for health establishments or accommodation for the disabled or elderly.
  • the installation follows or manages the entrances / exits of the establishment, and in particular makes it possible to ensure a fugue control, or simply a function of memorizing the passages.
  • the systems for detecting and identifying people which are currently known generally comprise a set of detectors arranged at each exit from the monitored area, these detectors being connected to a central management unit.
  • Each member of the establishment carries an individual identification badge, generally worn on the wrist in the form of a bracelet.
  • the badge receives the detection signal emitted by the detector, and sends it a person identification signal.
  • Known devices operate on the principle of induction.
  • the detector is produced by a winding emitting low frequency energy. This energy is collected at the time of passage by a receiver winding of the wristband badge, which triggers the emission of radio identification intended for a receiving antenna of the detector.
  • the disadvantages of these systems are essentially linked to the inductive principle.
  • the energy collected by the badge is a function of the square of the distance between two planar windings.
  • the detection range is therefore very limited, of the order of a meter in practice.
  • it varies according to the relative orientation of the windings: if, when the badge passes at the level of the detector, the plane of the secondary winding is perpendicular to the plane of the primary winding, the energy collected will be zero.
  • the energy collected is a function of the time spent in the range of the detector.
  • the energy collected will be too weak to trigger the emission of identification.
  • the known devices require the installation of the detector winding generally embedded in the ground, at each crossing point.
  • microwave identification systems are also known. These systems are often used for counting or object detection, and in particular for electronic toll collection on motorways. The performance of these systems is linked to the unidirectional nature of the detection waves emitted, and therefore to the exact positioning of the identification badges in the detection beam. The technique is unsuited to the problems of detecting people or objects of varying sizes in movement, for which the position, orientation and angle of passage of the badge are different each time.
  • the object of the invention is to eliminate these drawbacks by providing a device for omnidirectional simultaneous identification allowing effective surveillance of a determined space, for example a reception establishment for people, or a warehouse for objects.
  • This object is achieved by the installation according to the invention for monitoring or managing the inputs and outputs in a coverage area having one or more entry / exit areas, constituted by a central unit connected to detectors arranged in each entry / exit zone, and by identification badges comprising an individual code assigned to each of the people or objects monitored, each detector comprising a primary transmitter of a detection signal and an identifying receiver, each badge comprising a receiver primary for reception of the detection signal when passing through an entry / exit zone and a secondary transmitter for the transmission of an identification signal which is received by the receiver identifying the detector and transmitted to the management center, characterized by causes the transmission of the detection signal to be a VHF or UHF transmission.
  • the transmission of the detection signal takes place in a frequency chosen in the band from 30 MHz to 1 GHz, more precisely in the band from 200 to 500 MHz.
  • each badge includes the primary receiver for receiving the detection signal, connected to a microcontroller containing an individual code, itself connected to the secondary transmitter for transmitting the identification signal.
  • the emission of the identification signal can be offset from the reception of the detection signal by a delay time specific to each badge.
  • the code can be a digital code, the delay time then being proportional to the value of the code.
  • the waves transmitted in the VHF-UHF band are omni-directional waves. Detection is thus not linked to the orientation of the detector relative to the badge.
  • the detection distance is much greater, of the order of ten meters instead of the meter.
  • the transmission speed of the detection signal is higher than in the case of an induction transmission. Detection is therefore ensured regardless of the speed of passage through the detection zone.
  • VHF-UHF The technology related to VHF-UHF can be implemented at low costs in terms of performance. In particular, the installation can be carried out without major structural work.
  • the operating frequencies are chosen from the frequencies authorized by the administration. This choice is such that they are not likely to disturb nearby electronic devices.
  • FIG. 1 represents an example of an omnidirectional simultaneous identification installation according to the invention, for surveillance, in a determined space which will be called coverage area, having passage areas or entry / exit areas such as 1, the entry / exit movements of a population or group of people or objects known as followed persons or followed objects.
  • This installation consists, on the one hand, of a central management unit 2, provided with electronic and computer means 3 suitable for the management of identifications, storage means, disks, floppy disks, printers, signaling means 4, and / or mechanical means of action, for example the selective blocking of the doors, the lowering of barriers, in the case of a runaway installation.
  • a central management unit 2 provided with electronic and computer means 3 suitable for the management of identifications, storage means, disks, floppy disks, printers, signaling means 4, and / or mechanical means of action, for example the selective blocking of the doors, the lowering of barriers, in the case of a runaway installation.
  • This central management unit 2 is connected to one or more detectors such as 5 placed at the level of each of the entry / exit zones 1, door, gate, passage, corridor, etc.
  • Each person or object monitored is provided with an identifying badge 6.
  • the badges 6 are capable of being detected by the detector 5 of each entry / exit zone, so that the management center 2 can follow in an identified manner the entries and exits of all the people or objects monitored.
  • each detector 5 comprises a means of connection 7 with the management center 2, for example a transmitter-transmitter of radio waves 8, the center 2 being connected to means for receiving the signals transmitted by the set of detectors, for example one or more receiving antennas 9.
  • the detector 5 comprises a primary transmitter 10 of a signal detection 11, or primary signal, covering the entry / exit zone.
  • the detector 5 also comprises an identifier receiver 12 or secondary receiver.
  • the transmitter 10, the receiver 12 and the connection means 7 are connected to a controller 13, known per se, which manages the operation of the detector.
  • the detection signal 11 is transmitted in a frequency situated in the VHF or UHF band.
  • the primary emission will be in the band from 30 MHz to 1 GHZ, and optimally between 200 and 600 MHz.
  • the emission of the detection signal in the VHF-UHF domain makes it possible to obtain optimal efficiency, with on the one hand, an omnidirectionality of the emission, and on the other hand, an absence of excessive parasitic effects due in particular to reflections on nearby obstacles.
  • the omnidirectional nature of the broadcast thus guarantees the detection of any person or object entering the entry / exit area.
  • the transmission of the omnidirectional detection signal 11 by the transmitter 10 can be permanent or intermittent (pulsed) in the entry / exit zone. However, preferably, the emission of the detection signal 11 is triggered by the activation of a sensor 14 connected to the detector 5.
  • This sensor can for example be a photoelectric cell.
  • This sensor In order to determine the direction of passage (entry or exit), it is possible to provide two cells arranged one next to the other and emitting two parallel rays.
  • the senor 14 consists of two cells 15 and 16 emitting a transverse light ray, one arranged on the entry side of the zone and the other on the exit side of the zone.
  • the badges 6 comprise a microcontroller 17 connected on the one hand to a receiver 18, and on the other hand to a transmitter 19.
  • the receiver 18 is a VHF or UHF receiver operating continuously and detecting the exact modulation emitted by the detectors 5.
  • the microcontroller 17 is adjusted so that activation of the receiver 18 results in the emission by the transmitter 19 of a signal identification 20 intended to be received by the receiver 12 of the detector.
  • the microcontroller 17 contains an individual code assigned to each badge 6, for example a digital code. This code is contained in the identification signal sent by the transmitter 19.
  • the energy for the standby of the primary receiver and the emission of the identifying signal by the secondary transmitter is supplied by a battery 21 connected to the microcontroller 17.
  • badges are traditionally designed in the form of a bracelet worn on the wrist or ankle. Alternatively, it could be a clip, pin, keychain, etc.
  • the badge may take the form of an electronic label, for example self-adhesive, magnetic, clip-on, with suction cup.
  • the operation of the installation is as follows.
  • a person or an object provided with a badge 6 is present in an entry / exit zone 1 in which there is a detector 5, it causes the activation of the sensor 14, for example, according to the direction of passage, one of cells 15 or 16, which then triggers the transmission of the detection signal 11 by the transmitter 10 of the detector 5.
  • This detection signal 11 is received by the receiver 18 of the badge 6, and causes the transmission by the transmitter 19 of the secondary signal or identification signal 20.
  • This signal which contains the individual code of the badge, is received at its turn by the receiver 12 of the detector 5 and transmitted by the link means 7 to the management center 2, as well as the information corresponding to the identification of the entry / exit zone concerned and to the direction of passage.
  • each badge 6 can be adjusted in such a way that the time of emission of the secondary identification signal 20 is shifted in time by a certain duration, called response time, relative to the time of reception of the detection signal 12 emitted by the detector 5, this response time being specific to each of the individual badges.
  • the code of each badge 6 can be a digital code, the response time of the badge being proportional to the value of this code.
  • these are micro-shifts of the order by example of the hundredth of a second.
  • the installation according to the invention allows the simultaneous detection and identification of several people or objects crossing the same entry / exit zone.
  • each badge emits an identification signal after a specific response time.
  • the detector 5 receives the time-shifted identification signals and can therefore identify each of the badges. This feature allows a much finer adaptation of the system response at this entry / exit area.
  • the installation can be carried out without the installation of wired systems. It can be changed very simply and quickly. You can add, remove, modify the location of the detectors.
  • the detectors can be installed without structural work, including the sensors near the entry / exit zones. It is no longer necessary to provide built-in or buried elements as in the prior art. Each detector may appear as a terminal placed in the vicinity of the entry / exit area to be covered.
  • the invention has been described in detail in an application corresponding more particularly to surveillance and detection in a people accommodation establishment. It is understood that various other applications are envisaged, in particular for monitoring and detecting objects. In general, the invention can be implemented for monitoring and detecting a population of people or objects in a determined territory, limited by entry / exit zones.

Abstract

The identification system for monitoring entry to and exit from a controlled area (1) includes a central management unit (2) connected to detectors (5) which are placed at each input/output points. A coded identification badge (6) is carried by each individual or object to be monitored. The detectors transmit a detection signal (11) in the VHF - UHF region which is received by any identification badge within the monitored region. The badges transmits an identification signal in response to the received signal, this response is detected and transmitted to the central management unit (2).

Description

L'invention concerne une installation d'identification simultanée omnidirectionnelle.The invention relates to a simultaneous omnidirectional identification installation.

Les systèmes de détection et d'identification sont destinés en particulier aux etablissements de santé ou d'hébergement pour personnes déficientes ou âgées. L'installation suit ou gère les entrées/sorties de l'établissement, et permet en particulier d'assurer un contrôle anti-fugue, ou simplement une fonction de mémorisation des passages.Detection and identification systems are intended in particular for health establishments or accommodation for the disabled or elderly. The installation follows or manages the entrances / exits of the establishment, and in particular makes it possible to ensure a fugue control, or simply a function of memorizing the passages.

Les systèmes de détection et d'identification de personnes qui sont connus actuellement comprennent généralement un ensemble de détecteurs disposés au niveau de chaque sortie de la zone surveillée, ces détecteurs étant reliés à une unité centrale de gestion. Chaque membre de l'établissement est porteur d'un badge individuel d'identification, généralement porté au poignet sous la forme d'un bracelet. Au moment du passage au niveau du détecteur, le badge reçoit le signal de détection émis par le détecteur, et lui renvoie un signal d'identification de la personne. Les dispositifs connus fonctionnent sur le principe de l'induction. Le détecteur est réalisé par un enroulement émettant une énergie basse fréquence. Cette énergie est collectée au moment du passage par un enroulement récepteur du badge-bracelet, qui déclenche l'émission d'identification radio à destination d'une antenne réceptrice du détecteur.The systems for detecting and identifying people which are currently known generally comprise a set of detectors arranged at each exit from the monitored area, these detectors being connected to a central management unit. Each member of the establishment carries an individual identification badge, generally worn on the wrist in the form of a bracelet. When passing through the detector, the badge receives the detection signal emitted by the detector, and sends it a person identification signal. Known devices operate on the principle of induction. The detector is produced by a winding emitting low frequency energy. This energy is collected at the time of passage by a receiver winding of the wristband badge, which triggers the emission of radio identification intended for a receiving antenna of the detector.

Un exemple de dispositif de ce type est décrit dans le document FR 2 668 613.An example of a device of this type is described in the document FR 2 668 613.

Les inconvénients de ces systèmes sont liés pour l'essentiel au principe inductif. L'énergie collectée par le badge est fonction du carré de la distance entre deux enroulements planaires. La portée de détection est donc très limitée, de l'ordre du mètre en pratique. De plus, elle varie en fonction de l'orientation relative des enroulements : si, lorsque le badge passe au niveau du détecteur, le plan de l'enroulement secondaire est perpendiculaire au plan de l'enroulement primaire, l'énergie collectée sera nulle.The disadvantages of these systems are essentially linked to the inductive principle. The energy collected by the badge is a function of the square of the distance between two planar windings. The detection range is therefore very limited, of the order of a meter in practice. In addition, it varies according to the relative orientation of the windings: if, when the badge passes at the level of the detector, the plane of the secondary winding is perpendicular to the plane of the primary winding, the energy collected will be zero.

Enfin, l'énergie collectée est fonction du temps de passage dans la zone de portée du détecteur. Ainsi, si l'on passe très rapidement devant le détecteur, l'énergie collectée sera trop faible pour déclencher l'émission d'identification. Pour éviter cet inconvénient, on est amené à abaisser le seuil de déclenchement, ce qui entraîne alors des déclenchements parasites.Finally, the energy collected is a function of the time spent in the range of the detector. Thus, if one passes very quickly in front of the detector, the energy collected will be too weak to trigger the emission of identification. To avoid this drawback, it is necessary to lower the trigger threshold, which then causes parasitic triggers.

Ces dispositifs présentent donc une fiabilité insuffisante. Ils correspondent à des modes d'utilisation où les zones d'entrée/sortie imposent le passage à proximité immédiate du détecteur, comme un couloir ou une porte étroite par exemple. Ils sont inadaptés à une couverture de l'ensemble des zones d'entrée/sortie d'établissements, y compris les portails d'entrée automobile, les portails fournisseurs, halls d'entrée de grands largeur, etc.These devices therefore have insufficient reliability. They correspond to modes of use where the entry / exit zones require passage in the immediate vicinity of the detector, such as a corridor or a narrow door for example. They are unsuitable for covering all entrance / exit areas of establishments, including car entrance gates, supplier gates, wide entrance halls, etc.

En outre, les dispositifs connus nécessitent la mise en place de l'enroulement détecteur encastré généralement dans le sol, au niveau de chaque point de passage.In addition, the known devices require the installation of the detector winding generally embedded in the ground, at each crossing point.

D'autre part, on connaît également des systèmes d'identification par hyperfréquence. Ces systèmes sont souvent utilisés pour le comptage ou la détection d'objets, et notamment pour le télépéage sur les autoroutes. Les performances de ces systèmes sont liées au caractère unidirectionnel des ondes de détection émises, donc au positionnement exact des badges d'identification dans le faisceau de détection. La technique est inadaptée aux problèmes de détection de personnes ou d'objets de tailles variables en mouvement, pour lesquels la position, l'orientation, et l'angle de passage du badge sont chaque fois différents.On the other hand, microwave identification systems are also known. These systems are often used for counting or object detection, and in particular for electronic toll collection on motorways. The performance of these systems is linked to the unidirectional nature of the detection waves emitted, and therefore to the exact positioning of the identification badges in the detection beam. The technique is unsuited to the problems of detecting people or objects of varying sizes in movement, for which the position, orientation and angle of passage of the badge are different each time.

Le but de l'invention est d'éliminer ces inconvénients en fournissant un dispositif d'indentification simultanée omnidirectionnelle permettant une surveillance efficace d'un espace déterminé, par exemple un établissement d'accueil pour des personnes, ou un entrepôt pour des objets.The object of the invention is to eliminate these drawbacks by providing a device for omnidirectional simultaneous identification allowing effective surveillance of a determined space, for example a reception establishment for people, or a warehouse for objects.

Ce but est atteint par l'installation selon l'invention pour le suivi ou la gestion des entrées et des sorties dans une zone de couverture présentant une ou plusieurs zones d'entrée/sortie, constituée par une unité centrale reliée à des détecteurs disposés dans chaque zone d'entrée/sortie, et par des badges d'identification comprenant un code individuel affectés à chacune des personnes ou objets suivis, chaque détecteur comprenant un émetteur primaire d'un signal de détection et un récepteur identificateur, chaque badge comprenant un récepteur primaire pour la réception du signal de détection lors du passage dans une zone d'entrée/sortie et un émetteur secondaire pour l'émission d'un signal d'identification qui est reçu par le récepteur identificateur du détecteur et transmis a la centrale de gestion, caractérisée par le fait que l'émission du signal de détection est une émission VHF ou UHF.This object is achieved by the installation according to the invention for monitoring or managing the inputs and outputs in a coverage area having one or more entry / exit areas, constituted by a central unit connected to detectors arranged in each entry / exit zone, and by identification badges comprising an individual code assigned to each of the people or objects monitored, each detector comprising a primary transmitter of a detection signal and an identifying receiver, each badge comprising a receiver primary for reception of the detection signal when passing through an entry / exit zone and a secondary transmitter for the transmission of an identification signal which is received by the receiver identifying the detector and transmitted to the management center, characterized by causes the transmission of the detection signal to be a VHF or UHF transmission.

De préférence, l'émission du signal de détection se fait dans une fréquence choisie dans la bande de 30 MHz à 1GHz, plus précisément dans la bande de 200 à 500 MHz.Preferably, the transmission of the detection signal takes place in a frequency chosen in the band from 30 MHz to 1 GHz, more precisely in the band from 200 to 500 MHz.

Avantageusement, chaque badge comprend le récepteur primaire pour la réception du signal de détection, relié à un microcontrôleur contenant un code individuel, lui même relié à l'émetteur secondaire pour l'émission du signal d'identification.Advantageously, each badge includes the primary receiver for receiving the detection signal, connected to a microcontroller containing an individual code, itself connected to the secondary transmitter for transmitting the identification signal.

L'émission du signal d'identification peut être décalée par rapport à la réception du signal de détection d'un temps de retard propre à chaque badge. Par exemple, le code peut être un code numérique, le temps de retard étant alors proportionnel à la valeur du code. Les avantages de l'invention sont nombreux.The emission of the identification signal can be offset from the reception of the detection signal by a delay time specific to each badge. For example, the code can be a digital code, the delay time then being proportional to the value of the code. The advantages of the invention are numerous.

Les ondes émises dans la bande VHF-UHF sont des ondes omnidirectionnelles. La détection n'est ainsi pas liée à l'orientation du détecteur par rapport au badge.The waves transmitted in the VHF-UHF band are omni-directional waves. Detection is thus not linked to the orientation of the detector relative to the badge.

La distance de détection est beaucoup plus importante, de l'ordre de la dizaine de mètre au lieu du mètre.The detection distance is much greater, of the order of ten meters instead of the meter.

La vitesse de transmission du signal de détection est plus élevée que dans le cas d'une transmission par induction. La détection est donc assurée quelle que soit la vitesse de passage au niveau de la zone de détection.The transmission speed of the detection signal is higher than in the case of an induction transmission. Detection is therefore ensured regardless of the speed of passage through the detection zone.

La technologie liée au VHF-UHF peut être mise en oeuvre à des coûts peu élevés au regard des performances. En particulier, l'installation peut être réalisée sans travaux importants de gros oeuvre.The technology related to VHF-UHF can be implemented at low costs in terms of performance. In particular, the installation can be carried out without major structural work.

Les fréquences de fonctionnement sont choisies parmi les fréquences autorisées par l'administration. Ce choix est tel qu'elles ne risquent pas de perturber des appareils électroniques situés à proximité.The operating frequencies are chosen from the frequencies authorized by the administration. This choice is such that they are not likely to disturb nearby electronic devices.

D'autres buts et avantages de l'invention apparaîtront à la lecture de la description suivante d'un exemple de réalisation effectuée à titre non-limitatif en référence aux dessins accompagnants parmi lesquels :

  • la figure 1 est une vue générale d'une installation selon l'invention ;
  • la figure 2 est une représentation schématique d'un détecteur ;
  • la figure 3 est une représentation schématique d'un badge d'identification.
Other objects and advantages of the invention will appear on reading the following description of an exemplary embodiment carried out at non-limiting title with reference to the accompanying drawings including:
  • Figure 1 is a general view of an installation according to the invention;
  • Figure 2 is a schematic representation of a detector;
  • Figure 3 is a schematic representation of an identification badge.

La figure 1 représente un exemple d'installation d'identification simultanée omnidirectionnelle selon l'invention, pour la surveillance, dans un espace déterminé que l'on appellera zone de couverture, présentant des zones de passage ou zones-d'entrée/sortie telles que 1, cles mouvements d'entrée/sortie d'une population ou groupe de personnes ou d'objets dits personnes suivies ou objets suivis.FIG. 1 represents an example of an omnidirectional simultaneous identification installation according to the invention, for surveillance, in a determined space which will be called coverage area, having passage areas or entry / exit areas such as 1, the entry / exit movements of a population or group of people or objects known as followed persons or followed objects.

Cette installation se compose, d'une part, d'une unité centrale de gestion 2, munie de moyens électroniques et informatiques 3 adéquats pour la gestion des identifications, des moyens de mémorisation, disques, disquettes, imprimantes, de moyens de signalisation 4, et/ou de moyens mécaniques d'action par, exemple le blocage sélectif des portes, l'abaissement de barrières, dans le cas d'une installation anti-fugue. Ces différents moyens sont connus en soi.This installation consists, on the one hand, of a central management unit 2, provided with electronic and computer means 3 suitable for the management of identifications, storage means, disks, floppy disks, printers, signaling means 4, and / or mechanical means of action, for example the selective blocking of the doors, the lowering of barriers, in the case of a runaway installation. These different means are known per se.

Cette unité centrale de gestion 2 est reliée à un ou plusieurs détecteurs tels que 5 placés au niveau de chacune des zones d'entrée/sortie 1, porte, portail, passage, couloir, etc.This central management unit 2 is connected to one or more detectors such as 5 placed at the level of each of the entry / exit zones 1, door, gate, passage, corridor, etc.

Chaque personne ou objet suivi est muni d'un badge identifiant 6. Les badges 6 sont susceptibles d'être détectés par le détecteur 5 de chaque zone d'entrée/sortie, de telle sorte que la centrale de gestion 2 peut suivre de manière identifiée les entrées et sorties de la totalité des personnes ou objets suivis.Each person or object monitored is provided with an identifying badge 6. The badges 6 are capable of being detected by the detector 5 of each entry / exit zone, so that the management center 2 can follow in an identified manner the entries and exits of all the people or objects monitored.

Comme représenté sur la figure 2, chaque détecteur 5 comprend un moyen de liaison 7 avec la centrale de gestion 2, par exemple un émetteur-transmetteur d'ondes radioélectriques 8, la centrale 2 étant connectée à des moyens de réception des signaux transmis par l'ensemble des détecteurs, par exemple un ou plusieurs antennes réceptrices 9.As shown in FIG. 2, each detector 5 comprises a means of connection 7 with the management center 2, for example a transmitter-transmitter of radio waves 8, the center 2 being connected to means for receiving the signals transmitted by the set of detectors, for example one or more receiving antennas 9.

Le détecteur 5 comprend un émetteur primaire 10 d'un signal de détection 11, ou signal primaire, couvrant la zone d'entrée/sortie. Le détecteur 5 comprend en outre un récepteur identificateur 12 ou récepteur secondaire. L'émetteur 10, le récepteur 12 et le moyen de liaison 7 sont connectés à un contrôleur 13, connu en soi, qui gère le fonctionnement du détecteur.The detector 5 comprises a primary transmitter 10 of a signal detection 11, or primary signal, covering the entry / exit zone. The detector 5 also comprises an identifier receiver 12 or secondary receiver. The transmitter 10, the receiver 12 and the connection means 7 are connected to a controller 13, known per se, which manages the operation of the detector.

L'émission du signal de détection 11 s'effectue dans une fréquence située dans la bande des VHF ou des UHF. De manière préférée, l'émission primaire se fera dans la bande de 30 MHz à 1 GHZ, et de façon optimale entre 200 et 600 MHz.The detection signal 11 is transmitted in a frequency situated in the VHF or UHF band. Preferably, the primary emission will be in the band from 30 MHz to 1 GHZ, and optimally between 200 and 600 MHz.

L'émission du signal de détection dans le domaine des VHF-UHF permet d'obtenir une efficacité optimale, avec d'une part, une omnidirectionnalité de l'émission, et d'autre part, une absence d'effets parasites excessifs dus notamment aux réflections sur des obstacles proches. Le caractère omnidirectionnel de l'émission garantit ainsi la détection de toute personne ou objet pénétrant dans la zone d'entrée/sortie.The emission of the detection signal in the VHF-UHF domain makes it possible to obtain optimal efficiency, with on the one hand, an omnidirectionality of the emission, and on the other hand, an absence of excessive parasitic effects due in particular to reflections on nearby obstacles. The omnidirectional nature of the broadcast thus guarantees the detection of any person or object entering the entry / exit area.

L'émission du signal de détection 11 omnidirectionnel par l'émetteur 10 peut être permanente ou intermittente (pulsée) dans la zone d'entrée/sortie. Cependant, de préférence, l'émission du signal de détection 11 est déclenchée par l'activation d'un capteur 14 connecté au détecteur 5.The transmission of the omnidirectional detection signal 11 by the transmitter 10 can be permanent or intermittent (pulsed) in the entry / exit zone. However, preferably, the emission of the detection signal 11 is triggered by the activation of a sensor 14 connected to the detector 5.

Ce capteur peut être par exemple une cellule photoélectrique. Afin de déterminer le sens de passage (entrée ou sortie), on peut prévoir deux cellules disposées l'une à côté de l'autre et émettant deux rayons parallèles.This sensor can for example be a photoelectric cell. In order to determine the direction of passage (entry or exit), it is possible to provide two cells arranged one next to the other and emitting two parallel rays.

De manière préférée, cependant, le capteur 14 est constitué par deux cellules 15 et 16 émettant un rayon lumineux transversal, l'une disposée du côté entrée de la zone et l'autre du côté sortie de la zone.Preferably, however, the sensor 14 consists of two cells 15 and 16 emitting a transverse light ray, one arranged on the entry side of the zone and the other on the exit side of the zone.

Comme représentée sur la figure 3, les badges 6 comprennent un microcontrôleur 17 connecté d'une part à un réceptuer 18, et d'autre part à un émetteur 19.As shown in FIG. 3, the badges 6 comprise a microcontroller 17 connected on the one hand to a receiver 18, and on the other hand to a transmitter 19.

Le récepteur 18 est un récepteur VHF ou UHF fonctionnant en continu et détectant la modulation exacte émise par les détecteurs 5.The receiver 18 is a VHF or UHF receiver operating continuously and detecting the exact modulation emitted by the detectors 5.

Le microcontrôleur 17 est réglé de telle sorte que l'activation du récepteur 18 entraîne l'émission par l'émetteur 19 d'un signal d'identification 20 destiné à être reçu par le récepteur 12 du détecteur.The microcontroller 17 is adjusted so that activation of the receiver 18 results in the emission by the transmitter 19 of a signal identification 20 intended to be received by the receiver 12 of the detector.

Le microcontrôleur 17 contient un code individuel affecté à chaque badge 6, par exemple un code numérique. Ce code est contenu dans le signal d'identification émis par l'émetteur 19.The microcontroller 17 contains an individual code assigned to each badge 6, for example a digital code. This code is contained in the identification signal sent by the transmitter 19.

L'énergie pour la veille du récepteur primaire et l'émission du signal identifiant par l'émetteur secondaire est fournie par une pile 21 connectée au microcontrôleur 17.The energy for the standby of the primary receiver and the emission of the identifying signal by the secondary transmitter is supplied by a battery 21 connected to the microcontroller 17.

Pour des personnes, les badges sont traditionnellement conçus sous la forme d'un bracelet porté au poignet ou à la cheville. Alternativement, il pourra s'agir d'un clip, broche, porte-clé, etc. Pour des objets, le badge pourra prendre la forme d'une étiquette électronique, par exemple autocollante, magnétique, clipsable, à ventouse.For people, badges are traditionally designed in the form of a bracelet worn on the wrist or ankle. Alternatively, it could be a clip, pin, keychain, etc. For objects, the badge may take the form of an electronic label, for example self-adhesive, magnetic, clip-on, with suction cup.

Le fonctionnement de l'installation est le suivant. Lorsqu'une personne ou un objet muni d'un badge 6 se présente dans une zone d'entrée/sortie 1 dans laquelle se trouve un détecteur 5, elle provoque l'activation du capteur 14, par exemple, selon le sens de passage, l'une des cellules 15 ou 16, qui déclenche alors l'émission du signal de détection 11 par l'émetteur 10 du détecteur 5.The operation of the installation is as follows. When a person or an object provided with a badge 6 is present in an entry / exit zone 1 in which there is a detector 5, it causes the activation of the sensor 14, for example, according to the direction of passage, one of cells 15 or 16, which then triggers the transmission of the detection signal 11 by the transmitter 10 of the detector 5.

Ce signal de détection 11 est reçu par le récepteur 18 du badge 6, et entraîne l'émission par l'émetteur 19 du signal secondaire ou signal d'identification 20. Ce signal, qui contient le code individuel du badge, est reçu à son tour par le récepteur 12 du détecteur 5 et transmis par le moyen de liaison 7 à la centrale de gestion 2, ainsi que l'information correspondant à l'identification de la zone d'entrée/sortie concernée et au sens de passage.This detection signal 11 is received by the receiver 18 of the badge 6, and causes the transmission by the transmitter 19 of the secondary signal or identification signal 20. This signal, which contains the individual code of the badge, is received at its turn by the receiver 12 of the detector 5 and transmitted by the link means 7 to the management center 2, as well as the information corresponding to the identification of the entry / exit zone concerned and to the direction of passage.

De manière caractéristique, chaque badge 6 peut être réglé de telle manière que l'instant d'émission du signal secondaire d'identification 20 soit décalé dans le temps d'une certaine durée, dite temps de réponse, par rapport à l'instant de réception du signal de détection 12 émis par le détecteur 5, ce temps de réponse étant propre à chacun des badges individuels. Par exemple, le code de chaque badge 6 peut être un code numérique, le temps de réponse du badge étant proportionnel à la valeur de ce code. Bien entendu, il s'agit de micro-décalages de l'ordre par exemple du centième de seconde.Typically, each badge 6 can be adjusted in such a way that the time of emission of the secondary identification signal 20 is shifted in time by a certain duration, called response time, relative to the time of reception of the detection signal 12 emitted by the detector 5, this response time being specific to each of the individual badges. For example, the code of each badge 6 can be a digital code, the response time of the badge being proportional to the value of this code. Of course, these are micro-shifts of the order by example of the hundredth of a second.

De cette manière, l'installation selon l'invention permet la détection et l'identification simultanée de plusieurs personnes ou objets traversant une même zone d'entrée/sortie.In this way, the installation according to the invention allows the simultaneous detection and identification of several people or objects crossing the same entry / exit zone.

En effet, lorsque plusieurs personnes ou objets se présentent au niveau d'une zone d'entrée/sortie 1, l'émission du signal de détection 12 est déclenchée. Chaque badge émet un signal d'identification après un temps de réponse qui lui est propre. Le détecteur 5 reçoit les signaux d'identification décalés dans le temps et peut donc identifier chacun des badges. Cette particularité autorise une adaptation beaucoup plus fine de la réponse du système au niveau de cette zone d'entrée/sortie.In fact, when several people or objects appear at an entry / exit zone 1, the emission of the detection signal 12 is triggered. Each badge emits an identification signal after a specific response time. The detector 5 receives the time-shifted identification signals and can therefore identify each of the badges. This feature allows a much finer adaptation of the system response at this entry / exit area.

L'installation peut être réalisée sans mise en place de systèmes filaires. Elle peut être modifiée très simplement et rapidement. On peut ajouter, enlever, modifier l'emplacement des détecteurs.The installation can be carried out without the installation of wired systems. It can be changed very simply and quickly. You can add, remove, modify the location of the detectors.

Les détecteurs peuvent être mis en place sans travaux de gros oeuvre, y compris les capteurs aux abords des zones d'entrée/sortie. Il n'est plus nécessaire de prévoir des éléments encastrés ou enterrés comme dans l'art antérieur. Chaque détecteur peut se présenter sous l'aspect d'une borne disposée au voisinage de la zone d'entrée/sortie à couvrir.The detectors can be installed without structural work, including the sensors near the entry / exit zones. It is no longer necessary to provide built-in or buried elements as in the prior art. Each detector may appear as a terminal placed in the vicinity of the entry / exit area to be covered.

L'invention a été décrite en détail dans une application correspondant plus particulièrement à la surveillance et la détection dans un établissement d'hébergement de personnes. Il est bien entendu que diverses autres applications sont envisagées, notamment pour la surveillance et la détection d'objets. De manière générale, l'invention peut être mise en oeuvre pour la surveillance et la détection d'une population de personnes ou d'objets dans un territoire déterminé, limité par des zones d'entrée/sortie.The invention has been described in detail in an application corresponding more particularly to surveillance and detection in a people accommodation establishment. It is understood that various other applications are envisaged, in particular for monitoring and detecting objects. In general, the invention can be implemented for monitoring and detecting a population of people or objects in a determined territory, limited by entry / exit zones.

Claims (6)

Installation d'identification simultanée omnidirectionnelle pour le suivi ou la gestion des entrées et sorties d'une zone de couverture présentant une ou plusieurs zones d'entrée/sortie (1), cette installation comprenant une unité centrale de gestion (2) reliée à des détecteurs (5) disposés au niveau de chacune des zones d'entrée/sortie (1), et des badges d'identification (6) codés individuellement affectés à chacun des personnes ou objets suivis, chaque détecteur (5) comprenant un émetteur primaire (10) d'un signal de détection (11) sur sa zone d'entrée/sortie (1) et un récepteur identificateur (12), chaque badge (6) comprenant un récepteur primaire (18) pour la réception du signal de détection (11) lors de chaque passage dans une zone d'entrée/sortie (1) et un émetteur secondaire (19) pour l'émission d'un signal d'identification (20) qui est reçu par le récepteur identificateur (12) du détecteur (5) et transmis à la centrale de gestion (2),
caractérisée par le fait que l'émission du signal de détection (11) est une émission VHF ou UHF.Omnidirectional simultaneous identification installation for monitoring or managing the entries and exits of a coverage area having one or more entry / exit areas (1), this installation comprising a central management unit (2) connected to detectors (5) arranged at each of the entry / exit zones (1), and individually coded identification badges (6) assigned to each of the people or objects monitored, each detector (5) comprising a primary transmitter ( 10) of a detection signal (11) on its entry / exit zone (1) and an identifier receiver (12), each badge (6) comprising a primary receiver (18) for the reception of the detection signal ( 11) during each passage through an entry / exit zone (1) and a secondary transmitter (19) for the transmission of an identification signal (20) which is received by the identifier receiver (12) of the detector (5) and transmitted to the central management (2),
characterized in that the transmission of the detection signal (11) is a VHF or UHF transmission. Installation selon la revendication 1, caractérisée par le fait que l'émission du signal de détection (11) se fait dans une fréquence choisie dans la bande de 30 MHz à 1 GHz.Installation according to claim 1, characterized in that the transmission of the detection signal (11) takes place in a frequency chosen in the band from 30 MHz to 1 GHz. Installation selon la revendication 2, caractérisée par le fait que l'émission du signal de détection (11) se fait dans une fréquence choisie dans la bande de 200 à 500 MHz.Installation according to claim 2, characterized in that the transmission of the detection signal (11) takes place in a frequency chosen in the band from 200 to 500 MHz. Installation selon l'une des revendications précédentes, caractérisée par le fait que chaque badge (6) comprend le récepteur primaire (18) pour la réception du signal de détection (11), relié à un microcontrôleur (17) contenant un code individuel, lui même relié à l'émetteur secondaire (19) pour l'émission du signal d'identification (20).Installation according to one of the preceding claims, characterized in that each badge (6) comprises the primary receiver (18) for receiving the detection signal (11), connected to a microcontroller (17) containing an individual code, even connected to the secondary transmitter (19) for the transmission of the identification signal (20). Installation selon l'une des revendications précédentes, caractérisée par le fait que les badges (6) comprennent des moyen de retarder l'émission du signal d'identification (20) par rapport à la réception du signal de détection (11) d'un temps de retard propre à chaque badge (6).Installation according to one of the preceding claims, characterized in that the badges (6) comprise means of delaying the emission of the identification signal (20) with respect to the reception of the detection signal (11) by a delay time specific to each badge (6 ). Installation selon la revendication 5, caractérisée par le fait que le code individuel est un code numérique, le temps de retard étant proportionnel à la valeur du code.Installation according to claim 5, characterized in that the individual code is a digital code, the delay time being proportional to the value of the code.
EP95480115A 1994-08-26 1995-08-23 System for simultaneous omnidirectional identification Withdrawn EP0701230A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9410508 1994-08-26
FR9410508A FR2725294B1 (en) 1994-08-26 1994-08-26 OMNIDIRECTIONAL SIMULTANEOUS IDENTIFICATION FACILITY

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EP0701230A1 true EP0701230A1 (en) 1996-03-13

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Citations (7)

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Publication number Priority date Publication date Assignee Title
US3739329A (en) * 1971-05-24 1973-06-12 Recognition Devices Electronic system for locating
US3750167A (en) * 1971-07-22 1973-07-31 Gen Dynamics Corp Postal tracking system
US3805227A (en) * 1972-10-03 1974-04-16 Rcds Enterprises Inc Electronic tracking locating system using multiple frequency, modulated, and time delayed ultrasonic signals
EP0056726A1 (en) * 1981-01-21 1982-07-28 Australian Meat and Live-Stock Corporation Remote identification of animals
US5021794A (en) * 1989-08-15 1991-06-04 Lawrence Robert A Personal emergency locator system
FR2668613A1 (en) 1990-10-29 1992-04-30 Msei System for detecting and identifying objects or persons
FR2673743A1 (en) * 1991-03-04 1992-09-11 Ragagnin Moreno Process and device for monitoring the presence of individuals within premises

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3739329A (en) * 1971-05-24 1973-06-12 Recognition Devices Electronic system for locating
US3750167A (en) * 1971-07-22 1973-07-31 Gen Dynamics Corp Postal tracking system
US3805227A (en) * 1972-10-03 1974-04-16 Rcds Enterprises Inc Electronic tracking locating system using multiple frequency, modulated, and time delayed ultrasonic signals
EP0056726A1 (en) * 1981-01-21 1982-07-28 Australian Meat and Live-Stock Corporation Remote identification of animals
US5021794A (en) * 1989-08-15 1991-06-04 Lawrence Robert A Personal emergency locator system
FR2668613A1 (en) 1990-10-29 1992-04-30 Msei System for detecting and identifying objects or persons
FR2673743A1 (en) * 1991-03-04 1992-09-11 Ragagnin Moreno Process and device for monitoring the presence of individuals within premises

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FR2725294A1 (en) 1996-04-05
FR2725294B1 (en) 1996-12-27

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