EP0708952B1 - Dispositif electronique assurant une communication permanente ou discontinue entre des personnes et des objets - Google Patents

Dispositif electronique assurant une communication permanente ou discontinue entre des personnes et des objets Download PDF

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Publication number
EP0708952B1
EP0708952B1 EP94923033A EP94923033A EP0708952B1 EP 0708952 B1 EP0708952 B1 EP 0708952B1 EP 94923033 A EP94923033 A EP 94923033A EP 94923033 A EP94923033 A EP 94923033A EP 0708952 B1 EP0708952 B1 EP 0708952B1
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EP
European Patent Office
Prior art keywords
receiver
transmitter
transmitters
electronic device
distance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94923033A
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German (de)
English (en)
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EP0708952A1 (fr
Inventor
Girolamo Buonavoglia
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Individual
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Individual
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Filing date
Publication date
Priority claimed from IT93MI001559A external-priority patent/IT1266576B1/it
Priority claimed from ITMI941390A external-priority patent/IT1271204B/it
Application filed by Individual filed Critical Individual
Publication of EP0708952A1 publication Critical patent/EP0708952A1/fr
Application granted granted Critical
Publication of EP0708952B1 publication Critical patent/EP0708952B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0205—Specific application combined with child monitoring using a transmitter-receiver system
    • G08B21/0213—System disabling if a separation threshold is exceeded
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
    • G08B13/1427—Mechanical actuation by lifting or attempted removal of hand-portable articles with transmitter-receiver for distance detection
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0227—System arrangements with a plurality of child units
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/023—Power management, e.g. system sleep and wake up provisions
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0241—Data exchange details, e.g. data protocol
    • G08B21/0247—System arrangements wherein the alarm criteria uses signal strength

Definitions

  • the invention concerns alarm and safety devices for persons and mobile objects.
  • the transmitter is carried by the person or object to be protected while the receiver is controlled by the person entrusted with their protection.
  • the Nutter Enterprises patent WO A 87 06748 comprises a system of remote control and alarm operating between a transmitter carried by a person or object and a receiver to which alarm signals are sent from a distance by the transmitter.
  • the coded FM signals are produced at intervals by the transmitter in the form of digital words.
  • the receiver immediately produces an alarm if at least one of the coded words is not received during any one of the intervals.
  • the receiver can control two transmitters simultaneously, adjusting the coded words so that they can appear at different intervals.
  • this apparatus has two transmitters, it does not deal with the problem of supervising several objects, persons or animals with a aingle receiver, partly for reasons of bulk, partly because of the difficulty of stowing away the different parts when not in use and partly because of the problem of coordinating the operative and idle phases of one or other of the transmitters.
  • Purpose of the present invention is to provide an inexpensive and easily carried device able to eliminate or reduce the seriousness of the above accidents by maintaining connections, which may even be continuous, by means of electromagnetic waves between the user and other persons and objects placed under the protection or at least under the control of the user making it easy to raise an alarm, operate means of security and various types of equipment.
  • Subject of the invention is an electronic unit able to establish continuous, or intermittent, connection among persons or between persons and objects, said unit comprising two devices, the first that here will be called a receiver, and the second formed of one or more bodies that will here be called a transmitter.
  • the receiver and each of the transmitters are connected by electromagnetic waves, to be employed respectively by the user and by the persons or objects who are under the projection or control of said user.
  • the electromagnetic waves are, as the case may be, radio waves, microwaves, sound waves, supersonic waves, infrared waves and others.
  • the receiving and transmitting devices have independent electric feed by batteries and the like or photoelectric panels.
  • the devices are preferably pocket-size and miniaturized.
  • the signals sent out by the electromagnetic waves can be coded to prevent interference among transmitters.
  • the receiver comprises one or more compartments each carrying one transmitter.
  • the automatic devices for activation and deactivation may be microswitches worked when the transmitter is connected with or disconnected from the receiver.
  • the means for attraction and disactivation may be magnetic attracting means that simultaneously retain the transmitter in the receiver and activate a magnetic microswitch within the transmitter that deactivates it.
  • the microswitch reactivates the transmitter.
  • Transmission by electromagnetic waves is made by using a double, or multiple, carrier technique to improve reception in closed environments or to overcome any blind spots that may be caused by obstacles or reflection of the signal.
  • the transmitter sends out signals on one or more different frequencies, which are fixed or dynamically variable over time.
  • the receiver uses the alternative frequency instead of one which may have been weakened by obstacles or reflection.
  • the transmitters can comprise a circuit which, due to activation of a special control device on said transmitter or due to emission of a vocal sound, produces a signal towards the receiver which then sends out an alarm signal useful for checking on the safety of children or of any person in need of help. Said vocal sound could be a baby crying.
  • the transmitters can comprise a circuit containing an acoustic warning which sounds when the transmitter receives from the receiver a certain signal; in this way the transmitter is relocalised when, for example, persons or objects have been found.
  • a special circuit constantly evaluates the distance between transmitters and the receiver. Said distance is compared with an electronic threshold which the user modifies by means of a special selecting device.
  • This alarm is acoustic or visual, or of both kinds.
  • the chosen function is operated by a push button from among those available corresponding to that function.
  • the device gives rise to an operative function if the threshold value is exceeded because a distance has been reached either greater than that corresponding to the threshold value, or lesser.
  • the purpose of this is to permit, for example, automatic remote activation of an anti-theft device for an automobile, for a home or some enclosed space, of an automatic closing device on a gate and a door or for deactivating a system, such as lighting or heating, when the user with the transmitter goes away from, for example, the automobile in which the receiver is installed, or else to permit the opposite functions when the user is approaching.
  • a special circuit and means of control such as a two-way selector on the receiver, will set off the alarm
  • the distance varying between a transmitter and a receiver is visualised numerically on the receiver. The distance can be found by measuring the delay in the echo signal compared with the signal sent out by the device called a receiver to a transmitter.
  • the distance can be found by measuring the time taken by a signal emitted by a transmittor or by the receiver when ordered to emit it by the other.
  • a special circuit constantly evaluates the direction between the receiver and one or more of the transmitters visualising said direction on a dial on the receiver.
  • the direction may be analogically visualised on a linear or circular bar-graph or with pointers or with digits on a numerical display.
  • the direction may be measured by triangulation techniques.
  • the direction of each transmitter in relation to the receiver can be found by manual or automatic rotation of an antenna on the receiver and measuring the variation in amplitude of the echo signal in relation to that sent out by the device called a receiver, to a transmitter.
  • the receiving and transmitting devices have independent electric feed by batteries and the like or by photoelectric panels.
  • Receiver and transmitters can be equipped with already known devices, operating on radio frequencies or with supersonic or infrared waves or by other means and can be completed with acoustic transducers, microphones and loud speakers and with devices suited to transmission and reception of Morse signals and be fitted with suitably powerful batteries to permit use of the device in searching for persons or objects in difficult environmental conditions.
  • Communication can thus be maintained between underwater divers and their boats on the surface, between emergency aid services and people lost in the snow, in fog or hidden under avalanches.
  • the invention offers evident advantages.
  • the user can be immediately informed if some person or object, to whom or to which a transmitter has been associated, goes away or is removed beyond the distance set by the receiver.
  • the user can therefore be warned if a thief steals his wallet in some crowded means of public transport, or if he forgets his umbrella or to supervise his baggage.
  • the invented receiver After walking away for a certain distance (the distance is that which said user has set on the device) the invented receiver, in the user's coat pocket, sounds a warning signal.
  • a parent does not want his little boy, playing in a park, to get too far away, for example not more than 40 m. Using the knob of the potentiometer he sets this distance on the receiver and puts a transmitter into the child's clothing.
  • the thief brings the transmitter closer to the receiver, on the occupier's bedside table for example, thus setting off the warning signal.
  • a shortsighted person does not remember where he has put down his glasses or the remote control to which the invented transmitters are applied, or else he wants to find his cat who likes to hide away and who has a transmitter on him.
  • the user sets a low value (e.g. 50-100 cm) on the receiver and then searches every corner in the house until a warning informs him that he is close to his glasses, his remote control device or to his cat.
  • a low value e.g. 50-100 cm
  • Automatic activation of alarm signals can be made in automobiles, at work, in the home, for closing gates and doors, for turning off lights, heating and other useful functions when the house occupier leaves home or gets out of his car.
  • the electronic unit described is extremely simple in its structure, is inexpensive and practical to use, thus permitting universal diffusion.
  • the receiver 10 of electromagnetic waves shaped like a flat box, has a compartment 11 to house the transmitter 30 of electromagnetic waves, this too shaped like a small flat box.
  • the receiver 10 comprises a battery 12 for electricity, a microswitch 13 for connection to this electric feed, an antenna 14, an AF demodulator filter 15, a preamplifier 16, a decoder amplifier 17, a comparator 18, a potentiometer 19 with graded scale 20, a slide selector 21, an output stage 22 for a visual or acoustic alarm signal, an analogico-digital converter 23, a 3-figure display 24, an electric ringer 25.
  • the transmitter 30 comprises a battery 31 for electric feed, a microswitch 32, an oscillator 33, a variable condenser 34, an amplifier 35, a modulator 36, an antenna 37, a LED 38.
  • the receiver 40 possesses the essential features of the receiver 10 but instead has four compartments 41-44 substantially the same as the compartment 11 of the receiver 10 housing the transmitter 30 and the transmitters 52-54 substantially the same as the transmitter 30.
  • a carrier is generated at the previously established frequency, by means of the variable condenser 34.
  • Said carrier suitably amplified in the amplifier 35 and modulater in the AF modulator 36, is sent to the antenna 37 for transmission of the signal.
  • the receiving antenna 14 picks up the signals transmitted by the transmitter 30 and these are sent to the AF demodulator filter 15.
  • This filter eliminates the carrier and extracts the modulator superimposed over it, on condition that the transmitter 30 has been tuned in, through the variable condenser 34, to the frequency of the receiver 10.
  • the AF demodulator filter 15 generates at its output a signal that is suitably preamplified in the preamplifier 16 and sent to the amplifier-decoder 17.
  • the alarm signal is sent to the output stage 22 of the receiver 10 for a visual signal, by means of a LED 38, or an acoustic signal.
  • Said alarm will therefore mean that the distance between the transmitter and the receiver is lesser or greater than a previously established value.
  • the signal sent out by the transmitter is sent to an A/D converter 23 and there changed into a numerical signal that appears on a display 24 to show the actual distance in metres between transmitter and receiver.
  • Fig. 6 diagrammatically shows the use of a double carrier technique to find the distance between the receiving device 59 and the transmitter 30.
  • the receiver 60 at A frequency alternates with the receiver 61 at B frequency by means of the carrier alternating logic 62.
  • the circuit 63 finds the amplitude variations on the basis of which said distance is visualised in the circuit 64.
  • Figure 7 shows in diagrammatic form how the double carrier technique is used to detect the angular position between the receiving device 69 and the transmitter 30.
  • the receiver 70 at A frequency alternates with the receiver 17 at B frequency by means of the carrier alternating logic 72.
  • circuit 73 finds the amplitude variations in accordance with which the angular position between the receiver 69 and the transmitter 30 is visualised in the circuit 76.
  • Indication of this position facilitates continuity of connection between the user who has the receiver and the person or object to be protected in possession of the transmitter.
  • Figure 8 shows in diagrammatic form an improvement to the electronic unit described by addition of receiver-transmitters for communication by voice as well, useful in the presence of snow, fog and the like, and also of the Morse system for communication under water.
  • the receiver device 80 comprises the receivers 81 and 82 which by two-way radio control 93 are connected alternatively to transmitters 91 and 92 of the transmitter 90.
  • the microphone 86 and loudspreaker 87 can be seen.
  • Morse type announcement or reply can be made it pushbutton 88.
  • Transmitters 84 and 85 in the receiver 80 are alternately connected to the receivers 94 and 95 in the transmitter 90 by the two-way radio control 83.
  • the microphone 96 and loudspeaker 97 can be seen.
  • Morse type announcement and reply can be made with the pushbuttons 88 and 98.
  • Figure 9 shows diagrammatically an electronic unit with receiver and transmitter in sealed shockproof containers provided with circuits for relocalizing the transmitter and therefore persons or objects to be controlled and protected in the event of contact having been lost.
  • the receiver 100 comprises the receiver circuits 101 and 102 which are connected, at normal power, with the transmitter circuits 101 and 102 of the transmitter 100.
  • a maximum power signal can be sent to the receiving circuits 104 and 105 in the transmitter 100 by the transmitting circuits 114 and 115, and diffused by the loud speaker 106.
  • This acoustic signal assists in finding the object or person connected to the transmitter, by the user connected to the receiver.
  • Said acoustic signal can function authomatically if the connection has gone too far away or is lost.
  • the transmitter will in any case emit the maximum power in making the acoustic signal increasing the power of emission of its own localizing signal so as to remake the lost connection.

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  • Child & Adolescent Psychology (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Emergency Alarm Devices (AREA)
  • Burglar Alarm Systems (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Adornments (AREA)
  • Alarm Systems (AREA)
  • Information Transfer Systems (AREA)
  • Telephone Function (AREA)

Claims (10)

  1. Groupe électronique pour la liaison même continue entre les personnes et les choses, comprenant deux dispositifs miniaturisés et de poche, avec alimentation électrique autonome également avec des panneaux photovoltaïques, dont le premier est ici appelé récepteur (10, 40, 59, 69, 80, 110) et le second est formé par un ou plusieurs corps ici appelés émetteurs (30, 52-54, 90, 100), ces dispositifs étant reliés par des ondes hertziennes, des micro-ondes, des ondes sonores, des ultrasons, des infrarouges, des ondes électromagnétiques en général et destinés respectivement à l'utilisateur et aux personnes ou aux objets soumis à la protection et au contrôle de l'utilisateur lui-même,
    caractérisé par le fait que le récepteur (10, 40, 59, 69, 80, 110) comprend un ou plusieurs compartiments (11, 41-44) chacun logeant un émetteur (30, 52-54, 90, 100), et par le fait que des dispositifs spéciaux (13, 32) et des circuits déterminent au moment de la séparation physique de chacun des émetteurs du récepteur l'activation du récepteur et de l'émetteur qui s'est séparé et au moment de la réintroduction physique de chaque émetteur dans le récepteur, le débranchement de l'émetteur et ils déterminent, lors du rebranchement de tous les émetteurs, le débranchement du récepteur.
  2. Groupe électronique conformément à la revendication 1),
    caractérisé par le fait que les signaux émis par les ondes électromagnétiques sont codés de manière à empêcher des interférences entre les émetteurs (30, 52-54, 90, 100).
  3. Groupe électronique conformément à la revendication 1),
    caractérisé par le fait que les dispositifs de branchement et de débranchement automatique sont des microcontacts (13, 32) actionnés par le branchement ou le débranchement des émetteurs (30, 52-54, 90, 100) par rapport au récepteur (10, 40, 59, 69, 80, 110).
  4. Groupe électronique conformément à la revendication 7),
    caractérisé par le fait que les dispositifs de branchement et de débranchement sont des rattrapeurs magnétiques qui déterminent en même temps la retenue de l'émetteur (30, 52-54, 90, 100) dans le récepteur (10, 40, 59, 69, 80, 110) et l'activation dans l'émetteur d'un microcontact magnétique qui le désactive alors qu'au débranchement, le champ magnétique venant à manquer, le microcontact remet en fonction l'émetteur lui-même.
  5. Groupe électronique conformément à la revendication 1),
    caractérisé par le fait que les émetteurs (30, 52-54, 90, 100) comprennent un circuit qui, par l'effet de l'actionnement d'une commande spéciale sur l'émetteur lui-même ou par l'effet d'une émission vocale, détermine un signal vers le récepteur (10, 40, 59, 69, 80, 110) adapté à faire se déclencher sur ce dernier un signal d'alarme utile au contrôle et à la sauvegarde d'enfants et de personnes nécessitant d'assistance en général, cette émission vocale pouvant également être les pleurs d'un bébé.
  6. Groupe électronique conformément à la revendication 1),
    caractérisé par le fait qu'un circuit prévu à cet effet évalue à chaque instant la distance entre les émetteurs (30, 52-54, 90, 100) et le récepteur (10, 40, 59, 69, 110) cette distance étant tour à tour comparée avec un seuil électronique de valeur modifiable par l'utilisateur au moyen d'un régulateur spécial (19) et déterminant dans le récepteur le déclenchement d'un ou de plusieurs dispositifs correspondant à des fonctions d'alarme ou opérationnelles lorsqu'une distance déterminée correspondant à une valeur de seuil donnée est dépassée, le dispositif d'alarme, acoustique ou optique ou des deux types, étant la fonction choisie réalisée en actionnant une touche parmi celles disponibles, correspondant à la fonction choisie.
  7. Groupe électronique conformément à la revendication 13,
    caractérisé par le fait que le déclenchement des dispositifs ayant des fonctions d'alarme ou opérationnelles a lieu si la valeur de seuil est dépassée à cause de l'obtention d'une distance aussi bien supérieure à celle correspondant à la valeur de seuil qu'inférieure, et cela dans le but de permettre, par exemple avec la télécommande, l'activation automatique d'un antivol pour voitures, pour habitations, pour des établissements en général, la fermeture automatique d'un portail, d'une porte, ou le débranchement d'une installation par exemple d'éclairage et de chauffage lorsque l'utilisateur en possession de l'émetteur (30, 52-54, 90, 100) s'éloigne d'un endroit par exemple de la voiture où est installé le récepteur et de consentir la vérification des phénomènes inverses lorsque l'utilisateur se rapproche de cet endroit.
  8. Groupe électronique conformément à la revendication 7)
    caractérisé par le fait qu'un circuit prévu à cet effet au moyen d'une commande adéquate tel un sélecteur (21) à deux positions sur le récepteur (10, 40, 59, 69, 80, 110), détermine le déclenchement de l'alarme à son gré;
    - ou lorsque la variation de la distance entre l'émetteur et le récepteur (10, 40, 59, 69, 80, 110) est en augmentation,
    - ou lorsque la variation de cette distance est en diminution,
    la première configuration étant utile lorsque, par exemple, on veut éviter l'éloignement de personnes ou d'objets et la seconde configuration lorsque, par exemple, on désire chercher une personne ou un objet égaré.
  9. Groupe électronique conformément à la revendication 1),
    caractérisé par le fait que le récepteur (10, 40, 59, 69, 80, 110) et les émetteurs (30, 52-54, 90, 100) sont munis de dispositifs fonctionnant en radiofréquence ou avec des canaux aux ultrasons ou à infrarouges ou avec d'autres moyens et intégrés avec des transducteurs acoustiques, microphone (86) et haut-parleur (87), et équipés de batteries d'une puissance adaptée, de manière à consentir l'utilisation comme communicateur et aide à la recherche de personnes et de choses dans des environnements difficiles ou dans des conditions extrêmes comme en présence de neige ou de brouillard ou de basses températures ou d'autres situations environnementales difficiles et par conséquent respectivement les communications entre les secouristes et les personnes disparues ou emportées par des avalanches ou de toute façon nécessitant des secours.
  10. Groupe électronique conformément à la revendication 1),
    caractérisé par le fait que le récepteur (10, 40, 59, 69, 80, 110) et les émetteurs (30, 52-54, 90, 100) sont protégés dans des conteneurs étanches et antichocs et qu'ils sont munis de dispositifs fonctionnant en radiofréquence ou avec des canaux aux ultrasons ou à infrarouges ou avec d'autres moyens et intégrés avec des transducteurs et des dispositifs (88, 89) adaptés à la transmission et à la réception de signaux de type morse de manière à consentir les communications également sans utiliser la bouche comme, par exemple, dans le cas de plongeurs sous-marins.
EP94923033A 1993-07-15 1994-07-07 Dispositif electronique assurant une communication permanente ou discontinue entre des personnes et des objets Expired - Lifetime EP0708952B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
ITMI931559 1993-07-15
IT93MI001559A IT1266576B1 (it) 1993-07-15 1993-07-15 Dispositivo elettronico di sicurezza
ITMI941390A IT1271204B (it) 1994-07-04 1994-07-04 Dispositivo elettronico per il collegamento anche continuo tra persone e cose
ITMI941390 1994-07-04
PCT/IT1994/000105 WO1995002874A1 (fr) 1993-07-15 1994-07-07 Dispositif electronique assurant une communication permanente ou discontinue entre des personnes et des objets

Publications (2)

Publication Number Publication Date
EP0708952A1 EP0708952A1 (fr) 1996-05-01
EP0708952B1 true EP0708952B1 (fr) 1997-03-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP94923033A Expired - Lifetime EP0708952B1 (fr) 1993-07-15 1994-07-07 Dispositif electronique assurant une communication permanente ou discontinue entre des personnes et des objets

Country Status (8)

Country Link
EP (1) EP0708952B1 (fr)
JP (1) JPH09500226A (fr)
AT (1) ATE150886T1 (fr)
AU (1) AU7274094A (fr)
BR (1) BR9407196A (fr)
CA (1) CA2166961A1 (fr)
DE (1) DE69402320D1 (fr)
WO (1) WO1995002874A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6300902B1 (en) 1999-02-10 2001-10-09 At&T Corp Personalized locator method and apparatus

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WO1995002874A1 (fr) 1995-01-26
CA2166961A1 (fr) 1995-01-26
JPH09500226A (ja) 1997-01-07
EP0708952A1 (fr) 1996-05-01
ATE150886T1 (de) 1997-04-15
AU7274094A (en) 1995-02-13
DE69402320D1 (de) 1997-04-30
BR9407196A (pt) 1996-09-17

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