EP0628938A1 - Telealarm system - Google Patents

Telealarm system Download PDF

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Publication number
EP0628938A1
EP0628938A1 EP94401245A EP94401245A EP0628938A1 EP 0628938 A1 EP0628938 A1 EP 0628938A1 EP 94401245 A EP94401245 A EP 94401245A EP 94401245 A EP94401245 A EP 94401245A EP 0628938 A1 EP0628938 A1 EP 0628938A1
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EP
European Patent Office
Prior art keywords
alarm system
remote alarm
portable
transmitter
devices
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Withdrawn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
EP94401245A
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German (de)
French (fr)
Inventor
Jean-Luc Figuero
Jean-Raphael Hardy
Claude Vialatte
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.)
D'ETUDES DE REALISATIONS ET D'INSTALLATIONS DE SYSTEMES (CORIS) Cie
Original Assignee
D'ETUDES DE REALISATIONS ET D'INSTALLATIONS DE SYSTEMES (CORIS) Cie
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Application filed by D'ETUDES DE REALISATIONS ET D'INSTALLATIONS DE SYSTEMES (CORIS) Cie filed Critical D'ETUDES DE REALISATIONS ET D'INSTALLATIONS DE SYSTEMES (CORIS) Cie
Publication of EP0628938A1 publication Critical patent/EP0628938A1/en
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/016—Personal emergency signalling and security systems

Definitions

  • the present invention relates to a remote alarm system, intended more particularly for users of public places and transport.
  • the main object of the present invention is therefore to remedy these drawbacks and, to do this, it relates to a remote alarm system which is essentially characterized in that it comprises individual portable transmitter devices with short range, which can be actuated manually in order to '' emit a predetermined alert signal, and a multiplicity of fixed receiving devices arranged at appropriate locations of a site to be protected, these receiving devices being able to receive the alert signal emitted by any of the portable devices finding within range and retransmitting the alert thus detected to intervention personnel.
  • the individual nature of the transmitting device thus guarantees a certain discretion and it is also immediately available since it is carried by the user, for example in the pocket or in a handbag.
  • Such a remote alarm system therefore represents additional security compared to the conventional means implemented by the public authorities.
  • the portable transmitter device is for single use and cannot be dismantled without destruction. In other words, it can only be used once, which considerably limits the possibilities of false alarms.
  • the portable transmitting device has an operating validity limited in time, which makes it possible to finance the installation and maintenance of the fixed equipment by the sole sale of the portable devices.
  • the portable transmitting device once actuated, has a limited duration of operation.
  • the remote alarm system further comprises at least one mobile receiving device, provided with a directing antenna, in order to make it possible to locate the transmitting device which has triggered the alarm.
  • the portable transmitter device consists of a small box containing a radio transmitter capable of being supplied from an autonomous energy source by means of a switch controlled by a button protruding from the surface of the housing.
  • the switch control button is normally covered by a protective cap made integral with the housing and which can only be detached from it by the rupture of a retaining lug.
  • the alarm cannot be triggered unexpectedly since it is first necessary to remove the protective cap by an irreversible voluntary action and only then to actuate the control button.
  • control button is of the push button type and includes a non-return system, so that it can be actuated only once.
  • the radio transmitter is associated with a modulator characterizing its validity date, which makes it possible to give each portable device a validity period limited in time taking account of the renewal rate judged necessary.
  • each portable device has an individual code sent at the same time as the alert signal, which makes it possible to possibly identify the person who triggered the alarm using a central file.
  • the remote alarm system essentially consists of individual portable transmitting devices 1, of the type of that shown schematically in FIG. 1, and of receiving devices 2, of the type of that shown schematically in FIG. 2, arranged at locations appropriate landlines of a site to be protected such as a public place, such as the metropolitan area.
  • a site to be protected such as a public place, such as the metropolitan area.
  • such fixed devices can not only be arranged in the corridors or stations, but also on board the transport trains.
  • the portable transmitter device 1 essentially consists of a modulator 3 and a radio transmitter 4, capable of being supplied from an autonomous energy source such as a battery 5, via a switch 6 with manual actuation, in order to emit a predetermined alert signal.
  • the radio transmitter 4 is associated with a transmission antenna 7 and it will preferably have a short range, for example a hundred meters.
  • the receiving device 2 essentially consists of a radio receiver 8 associated with a receiving antenna 9 and able to receive the alert signal emitted by any of the portable devices 1 being within range.
  • This radio receiver is followed by a demodulator 10 and an interface 11 associated with a relay 12.
  • the relay 12 is actuated and allows, by known means, to retransmit alarm to nearby surveillance personnel for rapid intervention on site. If necessary, the alarm can also be sent directly to the police or gendarmerie.
  • the individual portable transmitting device 1 is constituted by a small rectangular box 13 made of molded and sealed plastic material, the dimensions of which will be close to those of a lighter, by example 70 mm high, 35 mm wide and 10 mm thick, so that it can be held discreetly in the hand.
  • the switch 6 it is constituted here by a push button 15 projecting from the surface of the housing in a cutout 16 provided for this purpose.
  • This push button is made of plastic and has at its lower part a conductive metal part 17 capable of making electrical contact between two metal tabs 18 forming part of the printed circuit 14 and which are supported by flexible insulating parts 19.
  • a spring 20 is also interposed between the push button 15 and the printed circuit 14.
  • the portable transmitter device 1 is intended for single use.
  • the push button 15 is provided on its periphery with a serration 21 cooperating with a serration of corresponding shape formed in the wall of the housing 13, these serrations being oriented in such a way that when the button is pressed against of the action of the spring 20, it can no longer rise.
  • the housing of the push button 15 is normally covered by a protective cap 22, made integral with the housing 13 by means of a tongue 23 engaging in a groove 24 of the housing and of a part in the form of hook 25 engaging by snap-fastening on a retaining lug 26 provided with a breaking primer 27.
  • a projecting gripping tab 28 is also provided on the cap 22 at the level of the hook-shaped part 25.
  • the user carrying such a device must first of all, by pressing the thumb on the protruding tab 28 provided for this purpose, lift the protective cap 22, while maintaining the housing 13 between the palm and the other fingers of the hand, like a lighter. To do this, the user must overcome the resistance exerted by the retaining lug 26 which ends up breaking at the level of its breaking point 27. The cap 22 is thus unlocked, but cannot be replaced on the housing due to the rupture of lug 26.
  • the conductive metal part 17 of the button comes to bear on the two metal tabs 18, closing the supply circuit of the transmitter carried by the printed circuit 14.
  • the force exerted by the button on the tabs compresses the flexible insulating parts 19 and when the user releases his pressure on the button, the latter cannot go up because of the non-return system, while said flexible parts maintain electrical contact by absorbing the mechanical play inherent in such a system.
  • the transmitter 4 of the portable device 1 therefore continuously transmits a predetermined alert signal, preferably for a period limited to, for example, a few minutes, so as not to saturate the receiver 8 of the fixed installation 2.
  • This duration of limited operation can be easily obtained by more or less rapid exhaustion of the energy source 5, but it goes without saying that the same result could also be obtained by other means, for example a timer or a clock .
  • the portable transmitter device 1 also has a validity period limited in time. For this purpose, it transmits in its frequency band a signal coded by the modulator 3 which can be identified by the receiver 8 of the fixed installation 2. The list of identifiable codes is loaded in the fixed installation and it is thus possible deactivate series of codes corresponding to material deemed obsolete.
  • the portable device will no longer be recognized by fixed installations and will therefore become unusable. This makes it possible to regularly renew the fleet of portable devices and thus finance the equipment and operating costs of fixed installations. Such an arrangement also makes it possible to protect to a certain extent against the manufacture of pirate devices.
  • Another provision to combat pirate use by re-using the device consists in making the housing 1 in a non-removable manner without destroying the printed circuit 14.
  • each portable device 1 also has an individual code transmitted at the same time as the alert signal, thanks to a code memory 29 associated with the modulator 3, as shown in FIG. 1.
  • the fixed receiver device 2 is then equipped with a decoder 30 and a display 31, as shown in FIG. 2. It is thus possible to keep track of the code generated in a memory at the central station, which allows, if necessary , subsequently identify the author of the alarm using a file.
  • the remote alarm system is supplemented by a number of mobile receiving devices 32 such as that shown in FIG. 6.
  • This device comprises a directing antenna 33 followed by a receiver 34, d 'a demodulator 35 and an amplifier 36 associated with a loudspeaker 37. If necessary, this device may also include a decoder 38 and a display 39 in the case where use is made of an individual code for each device portable transmitter.
  • such a mobile receiving device 32 allows intervention personnel to locate, for example in a crowd, the area where the transmitter is on alert, orienting themselves according to the power sound output from the speaker.
  • the sound system could be replaced or supplemented by a light system or the like.
  • the remote alarm system according to the invention makes it possible to respond effectively to the problem of insecurity in public places.
  • the user carrying a miniature individual portable transmitter device 1 according to the invention can, when he is a victim or witness of an assault or an accident, alert discreetly and instantly by means of this device the police or security personnel. It will then be easily located thanks to the message transmitted by the fixed receiving device 2 being in range, then possibly more precisely thanks to a mobile receiving device 32. This makes it possible to reduce the number of monitoring teams and to take in advance measures to prevent the attacker (s) from fleeing, such as locking the access doors to the place being monitored.

Abstract

Remote alarm system, characterised in that it comprises individual short-range portable transmitters (1), which can be actuated manually so as to transmit a predetermined warning signal, and a multiplicity of fixed receiver devices arranged at appropriate locations in a site to be protected, these receiver devices being able to receive the warning signal transmitted by any one of the portable devices (1) within range, and to retransmit the warning thus detected to personnel for intervention. This system is more particularly intended for users of public transport and sites, such as the underground railway for example. <IMAGE>

Description

La présente invention concerne un système de téléalarme, destiné plus particulièrement aux usagers des lieux et transports publics.The present invention relates to a remote alarm system, intended more particularly for users of public places and transport.

On sait que l'insécurité est actuellement l'une des préoccupations majeures de notre société. Bien entendu, certains lieux et transports publics, comme le métropolitain par exemple, sont déjà équipés de dispositifs d'alarme. Toutefois, l'utilisation de ces dispositifs d'alarme classiques présente pour les usagers des difficultés qui peuvent être d'ordre physique - impossibilité de se déplacer vers le dispositif d'alarme le plus proche - ou d'ordre moral - peur de se faire remarquer en cas d'agression.We know that insecurity is currently one of the major concerns of our society. Of course, some places and public transport, such as the metropolitan for example, are already equipped with alarm devices. However, the use of these conventional alarm devices presents for the users difficulties which can be physical - inability to move to the nearest alarm device - or moral - fear of being note in case of aggression.

La présente invention a donc pour but principal de remédier à ces inconvénients et, pour ce faire, elle a pour objet un système de téléalarme qui se caractérise essentiellement en ce qu'il comprend des dispositifs émetteurs portatifs individuels à faible portée, actionnables manuellement afin d'émettre un signal d'alerte prédéterminé, et une multiplicité de dispositifs récepteurs fixes disposés à des emplacements appropriés d'un site à protéger, ces dispositifs récepteurs étant aptes à recevoir le signal d'alerte émis par l'un quelconque des dispositifs portatifs se trouvant à portée et à retransmettre l'alerte ainsi détectée à du personnel d'intervention.The main object of the present invention is therefore to remedy these drawbacks and, to do this, it relates to a remote alarm system which is essentially characterized in that it comprises individual portable transmitter devices with short range, which can be actuated manually in order to '' emit a predetermined alert signal, and a multiplicity of fixed receiving devices arranged at appropriate locations of a site to be protected, these receiving devices being able to receive the alert signal emitted by any of the portable devices finding within range and retransmitting the alert thus detected to intervention personnel.

Le caractère individuel du dispositif émetteur garantit ainsi une certaine discrétion et il est en outre d'une disponibilité immédiate puisque porté par l'usager, par exemple dans la poche ou dans un sac à main. Un tel système de téléalarme représente donc une sécurité complémentaire par rapport aux moyens classiques mis en oeuvre par les pouvoirs publics.The individual nature of the transmitting device thus guarantees a certain discretion and it is also immediately available since it is carried by the user, for example in the pocket or in a handbag. Such a remote alarm system therefore represents additional security compared to the conventional means implemented by the public authorities.

De préférence, le dispositif émetteur portatif est à usage unique et ne peut être démonté sans destruction. Autrement dit, il ne peut servir qu'une seule fois, ce qui limite considérablement les possibilités de fausses alarmes.Preferably, the portable transmitter device is for single use and cannot be dismantled without destruction. In other words, it can only be used once, which considerably limits the possibilities of false alarms.

De préférence également, le dispositif émetteur portatif possède une validité de fonctionnement limitée dans le temps, ce qui permet de financer l'installation et l'entretien des équipements fixes par la seule vente des dispositifs portatifs.Preferably also, the portable transmitting device has an operating validity limited in time, which makes it possible to finance the installation and maintenance of the fixed equipment by the sole sale of the portable devices.

Par ailleurs, le dispositif émetteur portatif, une fois actionné, a une durée de fonctionnement limitée dans le temps.Furthermore, the portable transmitting device, once actuated, has a limited duration of operation.

Avantageusement, le système de téléalarme selon l'invention comporte en outre au moins un dispositif récepteur mobile, muni d'une antenne directrice, afin de permettre de localiser le dispositif émetteur ayant déclenché l'alarme.Advantageously, the remote alarm system according to the invention further comprises at least one mobile receiving device, provided with a directing antenna, in order to make it possible to locate the transmitting device which has triggered the alarm.

Dans une forme de réalisation particulière de l'invention, le dispositif émetteur portatif est constitué par un boîtier de petite taille renfermant un émetteur radioélectrique susceptible d'être alimenté à partir d'une source d'énergie autonome par l'intermédiaire d'un interrupteur commandé par un bouton faisant saillie à la surface du boîtier.In a particular embodiment of the invention, the portable transmitter device consists of a small box containing a radio transmitter capable of being supplied from an autonomous energy source by means of a switch controlled by a button protruding from the surface of the housing.

De préférence, le bouton de commande de l'interrupteur est normalement recouvert par un capuchon de protection rendu solidaire du boîtier et qui ne peut en être désolidarisé que par la rupture d'un ergot de maintien.Preferably, the switch control button is normally covered by a protective cap made integral with the housing and which can only be detached from it by the rupture of a retaining lug.

Ainsi, l'alarme ne peut pas être déclenchée de manière inopinée puisqu'il faut d'abord retirer le capuchon de protection par une action volontaire irréversible et seulement ensuite actionner le bouton de commande.Thus, the alarm cannot be triggered unexpectedly since it is first necessary to remove the protective cap by an irreversible voluntary action and only then to actuate the control button.

Avantageusement, le bouton de commande est du type bouton poussoir et comporte un système anti-retour, de façon à ne pouvoir être actionné qu'une seule fois.Advantageously, the control button is of the push button type and includes a non-return system, so that it can be actuated only once.

Dans une forme de réalisation particulière de l'invention, l'émetteur radioélectrique est associé à un modulateur caractérisant sa date de validité, ce qui permet de donner à chaque dispositif portatif une durée de validité limitée dans le temps tenant compte du taux de renouvellement jugé nécessaire.In a particular embodiment of the invention, the radio transmitter is associated with a modulator characterizing its validity date, which makes it possible to give each portable device a validity period limited in time taking account of the renewal rate judged necessary.

De plus, en variante, chaque dispositif portatif possède un code individuel émis en même temps que le signal d'alerte, ce qui permet d'identifier éventuellement la personne ayant déclenché l'alarme grâce à un fichier central.In addition, as a variant, each portable device has an individual code sent at the same time as the alert signal, which makes it possible to possibly identify the person who triggered the alarm using a central file.

Plusieurs formes d'exécution de l'invention sont décrites ci-après à titre d'exemples, en référence aux dessins annexés dans lesquels :

  • la figure 1 est un schéma synoptique d'un dispositif émetteur portatif individuel faisant partie du système de téléalarme conforme à l'invention ;
  • la figure 2 est un schéma synoptique d'un dispositif récepteur faisant partie de ce système de téléalarme ;
  • la figure 3 est une vue en perspective d'un mode de réalisation pratique du dispositif émetteur portatif individuel représenté sur la figure 1 ;
  • la figure 4 est une vue en coupe de ce dispositif;
  • la figure 5 est une vue partielle à plus grande échelle illustrant le fonctionnement d'un tel dispositif ; et
  • la figure 6 est un schéma synoptique d'un dispositif récepteur mobile faisant partie du système de téléalarme, dans une variante de réalisation de l'invention.
Several embodiments of the invention are described below by way of examples, with reference to the accompanying drawings in which:
  • Figure 1 is a block diagram of an individual portable transmitter device forming part of the remote alarm system according to the invention;
  • FIG. 2 is a block diagram of a receiving device forming part of this remote alarm system;
  • Figure 3 is a perspective view of a practical embodiment of the individual portable transmitter device shown in Figure 1;
  • Figure 4 is a sectional view of this device;
  • Figure 5 is a partial view on a larger scale illustrating the operation of such a device; and
  • FIG. 6 is a block diagram of a mobile receiver device forming part of the remote alarm system, in an alternative embodiment of the invention.

Le système de téléalarme selon l'invention se compose essentiellement de dispositifs émetteurs portatifs individuels 1, du type de celui représenté schématiquement sur la figure 1, et de dispositifs récepteurs 2, du type de celui représenté schématiquement sur la figure 2, disposés à des emplacements fixes appropriés d'un site à protéger tel qu'un lieu public, comme par exemple l'enceinte du métropolitain. Bien entendu, de tels dispositifs fixes peuvent non seulement être disposés dans les couloirs ou les stations, mais également à bord des rames de transport.The remote alarm system according to the invention essentially consists of individual portable transmitting devices 1, of the type of that shown schematically in FIG. 1, and of receiving devices 2, of the type of that shown schematically in FIG. 2, arranged at locations appropriate landlines of a site to be protected such as a public place, such as the metropolitan area. Of course, such fixed devices can not only be arranged in the corridors or stations, but also on board the transport trains.

Le dispositif émetteur portatif 1 est essentiellement constitué d'un modulateur 3 et d'un émetteur radioélectrique 4, susceptibles d'être alimentés à partir d'une source d'énergie autonome telle qu'une pile 5, par l'intermédiaire d'un interrupteur 6 à actionnement manuel, afin d'émettre un signal d'alerte prédéterminé. L'émetteur radioélectrique 4 est associé à une antenne d'émission 7 et il aura de préférence une faible portée, par exemple une centaine de mètres.The portable transmitter device 1 essentially consists of a modulator 3 and a radio transmitter 4, capable of being supplied from an autonomous energy source such as a battery 5, via a switch 6 with manual actuation, in order to emit a predetermined alert signal. The radio transmitter 4 is associated with a transmission antenna 7 and it will preferably have a short range, for example a hundred meters.

Quant au dispositif récepteur 2, il est essentiellement constitué d'un récepteur radioélectrique 8 associé à une antenne de réception 9 et apte à recevoir le signal d'alerte émis par l'un quelconque des dispositifs portatifs 1 se trouvant à portée. Ce récepteur radioélectrique est suivi d'un démodulateur 10 et d'une interface 11 associée à un relais 12. Ainsi, lorsque le récepteur 8 reçoit un signal d'alerte, le relais 12 est actionné et permet, par des moyens connus, de retransmettre l'alarme à du personnel de surveillance se trouvant à proximité en vue d'une intervention rapide sur les lieux. Le cas échéant, l'alarme peut également être retransmise directement à la police ou à la gendarmerie.As for the receiving device 2, it essentially consists of a radio receiver 8 associated with a receiving antenna 9 and able to receive the alert signal emitted by any of the portable devices 1 being within range. This radio receiver is followed by a demodulator 10 and an interface 11 associated with a relay 12. Thus, when the receiver 8 receives an alert signal, the relay 12 is actuated and allows, by known means, to retransmit alarm to nearby surveillance personnel for rapid intervention on site. If necessary, the alarm can also be sent directly to the police or gendarmerie.

Dans le mode de réalisation pratique représenté sur les figures 3 à 5, le dispositif émetteur portatif individuel 1 est constitué par un boîtier parallélépipédique de petite taille 13 en matière plastique moulée et scellée, dont les dimensions seront voisines de celles d'un briquet, par exemple 70 mm de hauteur, 35 mm de largeur et 10 mm d'épaisseur, de façon à pouvoir être tenu discrètement dans la main.In the practical embodiment represented in FIGS. 3 to 5, the individual portable transmitting device 1 is constituted by a small rectangular box 13 made of molded and sealed plastic material, the dimensions of which will be close to those of a lighter, by example 70 mm high, 35 mm wide and 10 mm thick, so that it can be held discreetly in the hand.

A l'intérieur de ce boîtier et comme représenté sur la figure 4, se trouvent la pile d'alimentation 5 et un circuit imprimé 14 portant l'émetteur 4 et le modulateur 3, l'antenne d'émission 7 étant intégrée directement au boîtier. Quant à l'interrupteur 6, il est constitué ici par un bouton poussoir 15 faisant saillie à la surface du boîtier dans une découpe 16 prévue à cet effet. Ce bouton poussoir est réalisé en matière plastique et comporte à sa partie inférieure une pièce métallique conductrice 17 susceptible d'effectuer un contact électrique entre deux languettes métalliques 18 faisant partie du circuit imprimé 14 et qui sont supportées par des pièces souples isolantes 19. Un ressort 20 est en outre interposé entre le bouton poussoir 15 et le circuit imprimé 14.Inside this box and as shown in FIG. 4, there is the supply battery 5 and a printed circuit 14 carrying the transmitter 4 and the modulator 3, the transmitting antenna 7 being integrated directly into the housing. As for the switch 6, it is constituted here by a push button 15 projecting from the surface of the housing in a cutout 16 provided for this purpose. This push button is made of plastic and has at its lower part a conductive metal part 17 capable of making electrical contact between two metal tabs 18 forming part of the printed circuit 14 and which are supported by flexible insulating parts 19. A spring 20 is also interposed between the push button 15 and the printed circuit 14.

Selon une caractéristique de la présente invention, le dispositif émetteur portatif 1 est prévu à usage unique. Autrement dit, lorsqu'il est actionné pour la première fois afin d'émettre une signal d'alerte, il ne peut plus resservir et doit impérativement être remplacé. A cet effet, le bouton poussoir 15 est pourvu sur sa périphérie d'une dentelure 21 coopérant avec une dentelure de forme correspondante ménagée dans la paroi du boîtier 13, ces dentelures étant orientées de telle manière que lorsque le bouton est enfoncé à l'encontre de l'action du ressort 20, il ne peut plus remonter.According to a characteristic of the present invention, the portable transmitter device 1 is intended for single use. In other words, when it is actuated for the first time in order to issue an alert signal, it can no longer be used and must imperatively be replaced. For this purpose, the push button 15 is provided on its periphery with a serration 21 cooperating with a serration of corresponding shape formed in the wall of the housing 13, these serrations being oriented in such a way that when the button is pressed against of the action of the spring 20, it can no longer rise.

Par ailleurs, le logement du bouton poussoir 15 est normalement recouvert par un capuchon de protection 22, rendu solidaire du boîtier 13 par l'intermédiaire d'une languette 23 venant en prise dans une rainure 24 du boîtier et d'une partie en forme de crochet 25 venant en prise par encliquetage sur un ergot de maintien 26 pourvu d'une amorce de rupture 27. Une patte de préhension saillante 28 est en outre prévue sur le capuchon 22 au niveau de la partie en forme de crochet 25.Furthermore, the housing of the push button 15 is normally covered by a protective cap 22, made integral with the housing 13 by means of a tongue 23 engaging in a groove 24 of the housing and of a part in the form of hook 25 engaging by snap-fastening on a retaining lug 26 provided with a breaking primer 27. A projecting gripping tab 28 is also provided on the cap 22 at the level of the hook-shaped part 25.

Ainsi, pour actionner le dispositif, il faut nécessairement exercer deux actions volontaires successives, exécutables d'une seule main, qui ont pour résultat de modifier irrémédiablement ledit dispositif. L'alarme ne peut donc pas être déclenchée de manière inopinée à la suite d'une manipulation nerveuse ou accidentelle de ce dispositif.Thus, to activate the device, it is necessary to exercise two successive voluntary actions, executable with one hand, which result in irreparably modifying said device. The alarm cannot therefore be triggered unexpectedly following nervous or accidental manipulation of this device.

En effet, pour déclencher une alarme, l'usager porteur d'un tel dispositif doit tout d'abord, par une pression du pouce sur la patte saillante 28 prévue à cet usage, soulever le capuchon protecteur 22, tout en maintenant le boîtier 13 entre la paume et les autres doigts de la main, à la manière d'un briquet. Pour ce faire, l'usager doit vaincre la résistance exercée par l'ergot de maintien 26 qui finit par se briser au niveau de son amorce de rupture 27. Le capuchon 22 se trouve ainsi déverrouillé, mais ne peut pas être remis en place sur le boîtier en raison de la rupture de l'ergot 26.Indeed, to trigger an alarm, the user carrying such a device must first of all, by pressing the thumb on the protruding tab 28 provided for this purpose, lift the protective cap 22, while maintaining the housing 13 between the palm and the other fingers of the hand, like a lighter. To do this, the user must overcome the resistance exerted by the retaining lug 26 which ends up breaking at the level of its breaking point 27. The cap 22 is thus unlocked, but cannot be replaced on the housing due to the rupture of lug 26.

L'accès au bouton poussoir 15 se trouve alors dégagé et l'usager peut donc exercer une pression sur ce bouton, toujours avec le pouce, comme illustré sur la figure 5. Ce faisant, l'usager rencontre d'abord une résistance mécanique due au système anti-retour constitué par les dentelures 21, à laquelle viendra s'ajouter ultérieurement la résistance exercée par le ressort 20 au fur et à mesure de l'enfoncement du bouton.Access to the push button 15 is then clear and the user can therefore exert pressure on this button, still with the thumb, as illustrated in FIG. 5. In doing so, the user first encounters mechanical resistance due to the non-return system constituted by the serrations 21, to which will be added later the resistance exerted by the spring 20 as the button is pressed.

En fin de course, la pièce métallique conductrice 17 du bouton vient prendre appui sur les deux languettes métalliques 18, en refermant le circuit d'alimentation de l'émetteur porté par le circuit imprimé 14. La force exercée par le bouton sur les languettes comprime les pièces isolantes souples 19 et lorsque l'usager relâche sa pression sur le bouton, celui-ci ne peut pas remonter à cause du système anti-retour, tandis que lesdites pièces souples maintiennent le contact électrique en absorbant le jeu mécanique inhérent à un tel système.At the end of the race, the conductive metal part 17 of the button comes to bear on the two metal tabs 18, closing the supply circuit of the transmitter carried by the printed circuit 14. The force exerted by the button on the tabs compresses the flexible insulating parts 19 and when the user releases his pressure on the button, the latter cannot go up because of the non-return system, while said flexible parts maintain electrical contact by absorbing the mechanical play inherent in such a system.

L'émetteur 4 du dispositif portatif 1 émet donc de façon continue un signal d'alerte prédéterminé et ce de préférence pendant une durée limitée à par exemple quelques minutes, afin de ne pas saturer le récepteur 8 de l'installation fixe 2. Cette durée de fonctionnement limitée peut être obtenue facilement par un épuisement plus ou moins rapide de la source d'énergie 5, mais il va de soi que l'on pourrait également obtenir le même résultat par d'autres moyens, par exemple une minuterie ou une horloge.The transmitter 4 of the portable device 1 therefore continuously transmits a predetermined alert signal, preferably for a period limited to, for example, a few minutes, so as not to saturate the receiver 8 of the fixed installation 2. This duration of limited operation can be easily obtained by more or less rapid exhaustion of the energy source 5, but it goes without saying that the same result could also be obtained by other means, for example a timer or a clock .

Selon une autre caractéristique de l'invention, le dispositif émetteur portatif 1 a également une durée de validité limitée dans le temps. A cet effet, il émet dans sa bande de fréquence un signal codé par le modulateur 3 qui peut être identifié par le récepteur 8 de l'installation fixe 2. La liste des codes identifiables est chargée dans l'installation fixe et il est ainsi possible de désactiver des séries de codes correspondant à du matériel jugé obsolète.According to another characteristic of the invention, the portable transmitter device 1 also has a validity period limited in time. For this purpose, it transmits in its frequency band a signal coded by the modulator 3 which can be identified by the receiver 8 of the fixed installation 2. The list of identifiable codes is loaded in the fixed installation and it is thus possible deactivate series of codes corresponding to material deemed obsolete.

Au-delà de sa durée de validité, avantageusement marquée de façon indélébile sur le corps du boîtier 13, le dispositif portatif ne sera plus reconnu par les installations fixes et deviendra donc inutilisable. Ceci permet de procéder régulièrement au renouvellement du parc de dispositifs portatifs et de financer ainsi les coûts d'équipement et d'exploitation des installations fixes. Une telle disposition permet également de se prémunir dans une certaine mesure contre la fabrication de dispositifs pirates. Une autre disposition pour lutter contre un usage pirate par réemploi du dispositif consiste à réaliser le boîtier 1 de façon non démontable sans destruction du circuit imprimé 14.Beyond its period of validity, advantageously marked indelibly on the body of the housing 13, the portable device will no longer be recognized by fixed installations and will therefore become unusable. This makes it possible to regularly renew the fleet of portable devices and thus finance the equipment and operating costs of fixed installations. Such an arrangement also makes it possible to protect to a certain extent against the manufacture of pirate devices. Another provision to combat pirate use by re-using the device consists in making the housing 1 in a non-removable manner without destroying the printed circuit 14.

Dans une variante de réalisation de l'invention, chaque dispositif portatif 1 possède en outre un code individuel émis en même temps que le signal d'alerte, grâce à une mémoire de code 29 associée au modulateur 3, comme représenté sur la figure 1. Le dispositif récepteur fixe 2 est alors équipé d'un décodeur 30 et d'un afficheur 31, comme représenté sur la figure 2. On peut ainsi garder une trace du code généré dans une mémoire au poste central, ce qui permet, le cas échéant, d'identifier ultérieurement l'auteur de l'alarme grâce à un fichier.In an alternative embodiment of the invention, each portable device 1 also has an individual code transmitted at the same time as the alert signal, thanks to a code memory 29 associated with the modulator 3, as shown in FIG. 1. The fixed receiver device 2 is then equipped with a decoder 30 and a display 31, as shown in FIG. 2. It is thus possible to keep track of the code generated in a memory at the central station, which allows, if necessary , subsequently identify the author of the alarm using a file.

Dans une autre variante de réalisation de l'invention, le système de téléalarme est complété par un certain nombre de dispositifs récepteurs mobiles 32 tels que celui représenté sur la figure 6. Ce dispositif comprend une antenne directrice 33 suivie d'un récepteur 34, d'un démodulateur 35 et d'un amplificateur 36 associé à un haut-parleur 37. Le cas échéant, ce dispositif pourra également comprendre un décodeur 38 et un afficheur 39 dans le cas où il est fait utilisation d'un code individuel pour chaque dispositif émetteur portatif.In another alternative embodiment of the invention, the remote alarm system is supplemented by a number of mobile receiving devices 32 such as that shown in FIG. 6. This device comprises a directing antenna 33 followed by a receiver 34, d 'a demodulator 35 and an amplifier 36 associated with a loudspeaker 37. If necessary, this device may also include a decoder 38 and a display 39 in the case where use is made of an individual code for each device portable transmitter.

Grâce à ses capacités directrices, un tel dispositif récepteur mobile 32 permet au personnel d'intervention de localiser, par exemple dans une foule, la zone où se trouve l'émetteur en état d'alerte, en s'orientant en fonction de la puissance sonore délivrée par le haut-parleur. Bien entendu, le système sonore pourrait être remplacé ou complété par un système lumineux ou autre.Thanks to its guiding capacities, such a mobile receiving device 32 allows intervention personnel to locate, for example in a crowd, the area where the transmitter is on alert, orienting themselves according to the power sound output from the speaker. Of course, the sound system could be replaced or supplemented by a light system or the like.

On voit donc en définitive que le système de téléalarme selon l'invention qui vient d'être décrit permet de répondre de manière efficace au problème de l'insécurité dans les lieux publics. En effet, l'usager porteur d'un dispositif émetteur portatif individuel miniaturisé 1 conforme à l'invention peut, lorsqu'il est victime ou témoin d'un agression ou d'un accident, alerter discrètement et instantanément au moyen de ce dispositif le personnel de police ou les agents de sécurité. Il sera alors aisément localisé grâce au message transmis par le dispositif récepteur fixe 2 se trouvant à portée, puis éventuellement de manière plus précise grâce à un dispositif récepteur mobile 32. Ceci permet de réduire la quantité d'équipes de surveillance et de prendre par avance des mesures visant à empêcher le ou les agresseurs de prendre la fuite, comme par exemple le verrouillage des portes d'accès du lieu ainsi surveillé.We therefore see that the remote alarm system according to the invention which has just been described makes it possible to respond effectively to the problem of insecurity in public places. Indeed, the user carrying a miniature individual portable transmitter device 1 according to the invention can, when he is a victim or witness of an assault or an accident, alert discreetly and instantly by means of this device the police or security personnel. It will then be easily located thanks to the message transmitted by the fixed receiving device 2 being in range, then possibly more precisely thanks to a mobile receiving device 32. This makes it possible to reduce the number of monitoring teams and to take in advance measures to prevent the attacker (s) from fleeing, such as locking the access doors to the place being monitored.

Claims (10)

Système de téléalarme, caractérisé en ce qu'il comprend des dispositifs émetteurs portatifs individuels (1) à faible portée, actionnables manuellement afin d'émettre un signal d'alerte prédéterminé, et une multiplicité de dispositifs récepteurs fixes (2) disposés à des emplacements appropriés d'un site à protéger, ces dispositifs récepteurs (2) étant aptes à recevoir le signal d'alerte émis par l'un quelconque des dispositifs portatifs (1) se trouvant à portée et à retransmettre l'alerte ainsi détectée à du personnel d'intervention.Remote alarm system, characterized in that it comprises individual portable transmitting devices (1) with short range, manually operable in order to emit a predetermined alert signal, and a multiplicity of fixed receiving devices (2) arranged at locations suitable for a site to be protected, these receiving devices (2) being capable of receiving the alert signal emitted by any of the portable devices (1) being within range and of transmitting the alert thus detected to personnel intervention. Système de téléalarme selon la revendication 1, caractérisé en ce que le dispositif émetteur portatif (1) est à usage unique et ne peut être démonté sans destruction.Remote alarm system according to claim 1, characterized in that the portable transmitter device (1) is for single use and cannot be dismantled without destruction. Système de téléalarme selon la revendication 1 ou 2, caractérisé en ce que le dispositif émetteur portatif (1) possède une validité de fonctionnement limitée dans le temps.Remote alarm system according to claim 1 or 2, characterized in that the portable transmitting device (1) has an operating validity limited in time. Système de téléalarme selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le dispositif émetteur portatif (1), une fois actionné, a une durée de fonctionnement limitée dans le temps.Remote alarm system according to any one of Claims 1 to 3, characterized in that the portable transmitting device (1), once activated, has a duration of operation limited in time. Système de téléalarme selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'il comporte en outre au moins un dispositif récepteur mobile (32), muni d'une antenne directrice (33), afin de permettre de localiser le dispositif émetteur (1) ayant déclenché l'alarme.Remote alarm system according to any one of Claims 1 to 4, characterized in that it also comprises at least one mobile receiving device (32), provided with a directing antenna (33), in order to allow the device to be located transmitter (1) that triggered the alarm. Système de téléalarme selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le dispositif émetteur portatif (1) est constitué par un boîtier (13) de petite taille renfermant un émetteur radioélectrique (4) susceptible d'être alimenté à partir d'une source d'énergie autonome (5) par l'intermédiaire d'un interrupteur (6) commandé par un bouton (15) faisant saillie à la surface du boîtier (13).Remote alarm system according to any one of Claims 1 to 5, characterized in that the portable transmitter device (1) consists of a small housing (13) containing a radio transmitter (4) capable of being supplied from an autonomous energy source (5) via a switch (6) controlled by a button (15) projecting from the surface of the housing (13). Système de téléalarme selon la revendication 6, caractérisé en ce que le bouton de commande (15) de l'interrupteur (6) est normalement recouvert par un capuchon de protection (22) rendu solidaire du boîtier (13) et qui ne peut en être désolidarisé que par la rupture d'un ergot de maintien (26).Remote alarm system according to claim 6, characterized in that the control button (15) of the switch (6) is normally covered by a protective cap (22) made integral with the housing (13) and which cannot be removed therefrom. disconnected only by the rupture of a retaining lug (26). Système de téléalarme selon la revendication 6 ou 7, caractérisé en ce que le bouton de commande (15) est du type bouton poussoir et comporte un système anti-retour (21), de façon à ne pouvoir être actionné qu'une seule fois.Remote alarm system according to claim 6 or 7, characterized in that the control button (15) is of the push button type and includes a non-return system (21), so that it can be actuated only once. Système de téléalarme selon l'une quelconque des revendications 6 à 8, caractérisé en ce que l'émetteur radioélectrique (4) est associé à un modulateur (3) caractérisant sa date de validité.Remote alarm system according to any one of Claims 6 to 8, characterized in that the radio transmitter (4) is associated with a modulator (3) characterizing its date of validity. Système de téléalarme selon la revendication 9, caractérisé en ce que chaque dispositif portatif (1) possède un code individuel (29) émis en même temps que le signal d'alerte.Remote alarm system according to claim 9, characterized in that each portable device (1) has an individual code (29) transmitted at the same time as the alert signal.
EP94401245A 1993-06-09 1994-06-06 Telealarm system Withdrawn EP0628938A1 (en)

Applications Claiming Priority (2)

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FR9306890A FR2706656B1 (en) 1993-06-09 1993-06-09 Remote alarm system.
FR9306890 1993-06-09

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JP (1) JPH07220190A (en)
AU (1) AU6460294A (en)
BR (1) BR9401762A (en)
FR (1) FR2706656B1 (en)
IL (1) IL109855A0 (en)

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AU6460294A (en) 1994-12-22
JPH07220190A (en) 1995-08-18
IL109855A0 (en) 1994-10-07
FR2706656A1 (en) 1994-12-23
BR9401762A (en) 1995-01-17
FR2706656B1 (en) 1995-09-08
US5461366A (en) 1995-10-24

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