FR2587400A1 - Intrinsically safe electronic lock and key device - Google Patents

Intrinsically safe electronic lock and key device Download PDF

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Publication number
FR2587400A1
FR2587400A1 FR8513789A FR8513789A FR2587400A1 FR 2587400 A1 FR2587400 A1 FR 2587400A1 FR 8513789 A FR8513789 A FR 8513789A FR 8513789 A FR8513789 A FR 8513789A FR 2587400 A1 FR2587400 A1 FR 2587400A1
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FR
France
Prior art keywords
lock
key
pads
studs
electronic
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.)
Pending
Application number
FR8513789A
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French (fr)
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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR8513789A priority Critical patent/FR2587400A1/en
Publication of FR2587400A1 publication Critical patent/FR2587400A1/en
Pending legal-status Critical Current

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Classifications

    • 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
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
    • 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
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
    • G07C2009/00761—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by connected means, e.g. mechanical contacts, plugs, connectors

Abstract

This electronic key and lock device, having several thousand possible combinations, is particularly suitable to be used as a protective lock for flats, vehicles or objects. The small key, which weighs a few grams, has 3 studs 1, 2 and 3, on the outside, which are applied against the studs 8, 9, 10 of the lock to open it. Only the lock is powered, the key does not need a battery. The device is especially protected against copying. Any attempt to use a fake key will result in an alarm being set off.

Description

La pressente invention a pour objet, a titre de produit industriel, un dispositif de clef et serrure electronique autoprotege pouvant intéresser toutes sortes de portes ou d'objets. The object of the present invention is, as an industrial product, a self-protected electronic key and lock device which may interest all kinds of doors or objects.

Comparativement aux dispositifs de serrures et clefs electriques ou electroniques existant le dispositif, selon l'invention, pressente de nombreux avantages - Usage très facile consistant en une simple presentation de la clef sur la
serrure.Compared to existing electric or electronic locks and keys devices, the device according to the invention has many advantages - Very easy use consisting of a simple presentation of the key on the
lock.

- Sans souci pour l'utilisateur, pas de code à retenir, pas de piles à rem
placer dans la clef.- No worries for the user, no code to remember, no rechargeable batteries
place in the key.

- Conception très simple donc très fiable et d'un cout réduit.- Very simple design therefore very reliable and of a reduced cost.

- Codage de la serrure modifiable a volonte, ce qui permet de changer les
clefs sans changer la serrure.- Coding of the lock changeable at will, which allows to change the
keys without changing the lock.

- Multiplicite des combinaisons.- Multiplicity of combinations.

- Serrures auto-protege-e, toutes tentatives de fraude declenche par exemple
une alarme ou neutralise la serrure.- Self-protected locks, all fraud attempts triggered for example
an alarm or deactivates the lock.

Le dispositif, selon l'invention, utilise pour la clef comme pour la serrure un circuit integre codeur-decodeur genre 53200 de "National Semi
Conductor" (Marque deposee) dont les montages en émetteur et en récepteur sont bien connus en soi.The device according to the invention uses for the key as for the lock an integrated coder-decoder circuit type 53200 of "National Semi
Conductor "(Trademark) whose transmitter and receiver arrangements are well known in themselves.

La clef utilise ce circuit intégré en montage emetteur : à savoir donc qu'elle delivre par un plot un code ou signal d'identification dès qu'elle est mise sous tension.The key uses this integrated circuit in transmitter mounting: that is to say that it delivers an identification code or signal by a pad as soon as it is switched on.

La serrure utilise ce circuit intégré en montage précepteur, à savoir donc qu'elle a une sortie qui change d'etat, lorsque sous tension elle reconnait le code ou le signal d'identification de la ou les clefs associes. Le changement d'etat de cette sortie permet, selon l'invention, d'actionner le penne ou la gache d'une porte-ou plus generalement les systèmes d'ouverture de portes ou objets. Le montage electronique du decodeur de la serrure est comple-- te selon l'invention par un autre montage electronìque qui détecte les- tentatives d'utilisation de fausses clefs et permet de déclencher une alarme ou encore de neutraliser temporairement la serrure.The lock uses this integrated circuit in preceptor mounting, that is to say that it has an output which changes state, when energized it recognizes the code or the identification signal of the associated key or keys. The change of state of this output allows, according to the invention, to actuate the pin or the striker of a door or more generally the systems for opening doors or objects. The electronic assembly of the lock decoder is supplemented according to the invention by another electronic assembly which detects attempts to use false keys and makes it possible to trigger an alarm or even to temporarily deactivate the lock.

Selon l'invention la clef ne dispose pas d'alimentation electrique propre elle Dresente extérieurement3nlots : 2 cour son alimentation et 1 pour de-- livrer son signal d'identification. Exterieurement la serrure pressente e-gale- ment 3 plots, 2 relies en permanence à une alimentation électrique et le 3ème lui servant à recueillir le signal d'identification venant de la clef. According to the invention, the key does not have its own electrical power supply. It is located externally. 3 lots: 2 for its power supply and 1 for delivering its identification signal. Externally, the pressing lock also has 3 studs, 2 permanently connected to an electrical supply and the 3rd used to collect the identification signal from the key.

Pour associer clef et serrure le codage des circuits ingégrés seront identiques mais aussi, selon l'invention, les 3 plots extérieurs à la clef et à la serrure seront disposes et relies électriquement de façon a se correspondre. Il y a mathématiquement 6 façons différentes de relier ces 3 plots, ce qui permet selon l'invention de multiplier par 6 les possibilités combinatoires des circuits intégrés. Les circuits intégrés utilises autorisent 4096 combinaisons (212) que nous pouvons multiplier par 6 grace a l'arrangement des plots expliques ci-avant, ce qui fait que notre dispositif présente 4096 x 6 = 24576 combinaisons differentes.To associate the key and the lock, the coding of the integrated circuits will be identical, but also, according to the invention, the 3 studs outside the key and the lock will be arranged and electrically connected so as to correspond. There are mathematically 6 different ways of connecting these 3 pads, which allows according to the invention to multiply by 6 the combinatorial possibilities of integrated circuits. The integrated circuits used allow 4096 combinations (212) which we can multiply by 6 thanks to the arrangement of the pads explained above, which means that our device has 4096 x 6 = 24576 different combinations.

L'utilisateur du dispositif met en contact les 3 plots de la clef sur les 3 plots de la serrure associée pour ouvrir une porte ou un objet. Selon l'invention, afin de faciliter la juxtaposition et le maintien des contacts clef-serrure, les 3 plots de contact de la serrure sont des aimants conducteurs du courant et les plots de contact de la clef sont en acier donc aimantable et conducteur.The user of the device brings the 3 pads of the key into contact with the 3 pads of the associated lock to open a door or an object. According to the invention, in order to facilitate the juxtaposition and the maintenance of key-lock contacts, the 3 contact pads of the lock are magnets which conduct current and the contact pads of the key are made of steel, therefore magnetizable and conductive.

La figure 1 représente le senéma électronique de la clef. Figure 1 shows the electronic senema of the key.

La figure 2 montre en perspective la clef avant surmoulage suivant un mode de réalisation préférée. Figure 2 shows in perspective the key before overmolding according to a preferred embodiment.

La figure 3 représente le schema électronique de la serrure,
La figure 4 montre en perspective la clef finie suivant un mode de réalisation préférée.FIG. 3 represents the electronic diagram of the lock,
Figure 4 shows in perspective the finished key according to a preferred embodiment.

La figure i est le schéma des connexions électriques de la clef. Celle-ci se compose principalement du circuit intégré S codeur-decodeur genre 53200 de "National Semi Conductor" (Marque Deposée) monte en codeur de signal. Ce montage est bien connu en soi, remarquons seulement que le codage de la clef est obtenu par combinaison des liaisons 6. L'alimentation des plots 1 et 3 est assurée par la serrure au moment du contact clef-serrure. Le code électrique ou signal d'identification sort par le plot 2. La diode 7 protège le circuit contre les inversions de courant. La diode électroluminescente 4 informe de la mise sous tension.Figure i is the diagram of the electrical connections of the key. This consists mainly of the integrated circuit S coder-decoder type 53200 of "National Semi Conductor" (Trademark) mounted in signal coder. This assembly is well known in itself, note only that the coding of the key is obtained by combination of the connections 6. The supply of the pads 1 and 3 is provided by the lock at the time of the key-lock contact. The electrical code or identification signal is output by the pad 2. The diode 7 protects the circuit against current reversals. The light-emitting diode 4 informs of the power up.

Sur la figure 2 apparait le montage électronique de la clef sur circuit imprimé simple face, tous les composants et en particulier le circuit intégré 5 et la diode electroluminescente 4 ont été soudés cbté cuivre. Les 3 plots 1, 2 et 3 sont cSté epoxy, avant soudage les plots 1, 2 et 3 s'apparentent à des punaises métalliques.In FIG. 2, the electronic assembly of the key appears on a single-sided printed circuit, all the components and in particular the integrated circuit 5 and the light-emitting diode 4 have been soldered on the copper side. The 3 studs 1, 2 and 3 are epoxy-coated, before the studs 1, 2 and 3 are similar to metal pins.

La figure 3 est le schéma électronique de la serrure. Celle-ci se compose principalement d'un circuit intégré 11 monté en décodeur de signal. Le circuit intégré 11 est le même que le circuit intégre 5 de la clef. Ce montage est bien connu en soit. Notons seulement que le codage de la serrure est obtenu par le commutateur 12 qui permet de modifier facilement et à vo lonté les combinaisons de la serrure. Les liaisons assures par ce commutateur 12 sont identiques à celle 6 de la clef associée.Les plots 8 et 10 sont sous tension grace à une pile 21 mais suivant une autre version par le secteur après redressement ou par pile photo-voltaque. Complétant le montage du décodeur, il y a une logique de sortie et de protection qui permet d'actionner l'ouverture de la porte et de protéger la serrure contre les fausses clefs. La sortie 22 passe de l'étatl àl'étatO si le signal attendu au plot 9 est correct. Cette logique de sortie et de protection détecte, grâce au transistor 19 et au condensateur 20, si au plot 9 il y a un signal quelquonque et le compare a l'état de la sortie 22 a l'aide des opérateurs logiques 13, 14, 15 et 16. Ce montage est bien compréhensible en soi et permet: si le signal en 9 est celui attendu, d'actionner la gache 18 de la porte.Figure 3 is the electronic diagram of the lock. This mainly consists of an integrated circuit 11 mounted as a signal decoder. The integrated circuit 11 is the same as the integrated circuit 5 of the key. This assembly is well known in itself. Note only that the coding of the lock is obtained by the switch 12 which makes it possible to easily and freely modify the combinations of the lock. The connections ensured by this switch 12 are identical to that 6 of the associated key. The pads 8 and 10 are energized by a battery 21 but according to another version by the sector after rectification or by photo-voltaic battery. Completing the installation of the decoder, there is an output and protection logic which enables the door to be opened and the lock to be protected against false keys. The output 22 goes from state 1 to state 0 if the signal expected at pad 9 is correct. This output and protection logic detects, thanks to the transistor 19 and the capacitor 20, if at the pad 9 there is any signal and compares it to the state of the output 22 using the logic operators 13, 14, 15 and 16. This assembly is understandable in itself and allows: if the signal at 9 is that expected, to actuate the keeper 18 of the door.

Si le signal en 9 est différent de celui attendu, d'actionner l'alarme 17 ou suivant une autre version de neutraliser temporairement la serrure.If the signal at 9 is different from that expected, activate alarm 17 or, according to another version, temporarily deactivate the lock.

La figure 4 montre la clef dans saversion finale et commerciale; il s'agit en fait du montage électronique de la figure 2 qui a été surmoulé pour ne laisser apparaître que les plots métalliques i, 2 et 3 et la diode électroluminescente 4. Un porte-clef 23 a été rajouté. Ce surmoulage protège et cache les combinaisons 6 et en interdit la copie ou la modification.Figure 4 shows the key in final and commercial saversion; it is in fact the electronic assembly of FIG. 2 which has been overmolded so as to reveal only the metal studs i, 2 and 3 and the light-emitting diode 4. A key holder 23 has been added. This overmolding protects and hides the combinations 6 and prohibits copying or modification.

La figure 5 laisse apparaître les 3 plots 8, 9 et 10 de la serrure qui sont 3 petits aimants conducteurs. Les 3 plots 1, 2 et 3 de la clef viennent se juxtaposer sur les 3 plots 8, 9 et 10 de la serrure.Figure 5 reveals the 3 pads 8, 9 and 10 of the lock which are 3 small conductive magnets. The 3 pads 1, 2 and 3 of the key are juxtaposed on the 3 pads 8, 9 and 10 of the lock.

L'arrangement par 3 des liaisons électriques des plots 1, 2, 3, 8, 9 et 10 peut être réalisé mathématiquement de 6 façons différentes, ce qui multiplie d'autant les combinaisons du circuit intégré utilisé.The arrangement by 3 of the electrical connections of the pads 1, 2, 3, 8, 9 and 10 can be carried out mathematically in 6 different ways, which multiplies all the combinations of the integrated circuit used.

Ce nouveau type de serrure et de clef peut avantageusement être installé sur toutes sortes de portes ou objets ; voici quelques exemples indicatifs
- portes d'immeubles, de maisons
- barrières
- courts de tennis
- véhicules
- serrures d'alarme
- coffres. This new type of lock and key can advantageously be installed on all kinds of doors or objects; here are some indicative examples
- doors of buildings, houses
- barriers
- tennis courts
- vehicles
- alarm locks
- coffers.

Claims (6)

REVENDICATIONS 1. Dispositif de serrure et de clef électronique auto-protégée utilisant pour la clef et la serrure le même circuit intégre codeur-décodeur offrant plusieurs milliers de combinaisons, caractérisé par une clef présentant extérieurement 3 plots 1, 2 et 3 puisant son énergie de fonctionnement dans la serrure au moment du contact clef-serrure, caractérisé par une serrure présentant extérieurement 3 plots 8, 9 et 10 et caractérisé par un arrangement des liaisons electriques des plots 1, 2 et 3 de la clef et des plots 8, 9 et 10 de la serrure multipliant par 6 les combinaisons des circuits intégrés utilises 5 et 11. 1. Self-protected electronic key and lock device using the same integrated coder-decoder circuit for the key and the lock offering several thousand combinations, characterized by a key externally presenting 3 pads 1, 2 and 3 drawing its operating energy in the lock at the time of the key-lock contact, characterized by a lock having 3 studs 8, 9 and 10 on the outside and characterized by an arrangement of the electrical connections of studs 1, 2 and 3 of the key and studs 8, 9 and 10 of the lock multiplying by 6 the combinations of integrated circuits used 5 and 11. 2. Dispositif selon la revendication 1 caractérisé par des plots 8, 9 et 10 de la serrure qui sont des aimants conducteurs et par des plots 1, 2 et 3 de la clef qui sont aimantables et conducteurs. 2. Device according to claim 1 characterized by pads 8, 9 and 10 of the lock which are conductive magnets and by pads 1, 2 and 3 of the key which are magnetizable and conductive. 3. Dispositif selon la revendication 1 ou 2 caractérisé par un commutateur 12 permettant de modifier la combinaison de la serrure. 3. Device according to claim 1 or 2 characterized by a switch 12 for changing the combination of the lock. 4. Dispositif selon l'une quelconque des revendications précédentes caractérisé par une serrure alimentée soit par pile 21, soit par le secteur, soit par pile photo-voltaSque.  4. Device according to any one of the preceding claims, characterized by a lock supplied either by battery 21, or by the sector, or by photo-voltaSque battery. 5. Dispositif selon l'une quelconque des revendications précédentes caractérisé par une serrure ayant une logique électronique de sortie et de protection, 13, 14, 15, 16, 19 et 20, actionnant la gache 18 si la clef utilisée est la bonne et déclenchant une alarme 17 si la clef utilisée est mauvaise. 5. Device according to any one of the preceding claims, characterized by a lock having an electronic output and protection logic, 13, 14, 15, 16, 19 and 20, actuating the keeper 18 if the key used is correct and triggering an alarm 17 if the key used is incorrect. 6. Dispositif selon l'une quelconque des revendications précédentes caractérisé par une clef ou les plots 1, 2, 3 et les composants électroniques ont été soudés sur circuits imprimés avant d'entre surmoulés.  6. Device according to any one of the preceding claims, characterized by a key or the pads 1, 2, 3 and the electronic components have been soldered on printed circuits before being overmolded.
FR8513789A 1985-09-13 1985-09-13 Intrinsically safe electronic lock and key device Pending FR2587400A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8513789A FR2587400A1 (en) 1985-09-13 1985-09-13 Intrinsically safe electronic lock and key device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8513789A FR2587400A1 (en) 1985-09-13 1985-09-13 Intrinsically safe electronic lock and key device

Publications (1)

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FR2587400A1 true FR2587400A1 (en) 1987-03-20

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FR8513789A Pending FR2587400A1 (en) 1985-09-13 1985-09-13 Intrinsically safe electronic lock and key device

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944976A (en) * 1974-08-09 1976-03-16 Rode France Electronic security apparatus
DE2557637A1 (en) * 1975-12-20 1977-07-07 Kreft Hans Diedrich Electronic lock with finter ring key - has element contg. electronic operating information moulded in hard insulating material
GB2079838A (en) * 1980-07-09 1982-01-27 Sodex Magister Lock control mechanism
FR2519057A1 (en) * 1981-12-29 1983-07-01 Lussato Bruno Electronic lock for briefcase carrying portable computer - uses matrix of contacts on card which must correspond to contact matrix in lock if lock is to open

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944976A (en) * 1974-08-09 1976-03-16 Rode France Electronic security apparatus
DE2557637A1 (en) * 1975-12-20 1977-07-07 Kreft Hans Diedrich Electronic lock with finter ring key - has element contg. electronic operating information moulded in hard insulating material
GB2079838A (en) * 1980-07-09 1982-01-27 Sodex Magister Lock control mechanism
FR2519057A1 (en) * 1981-12-29 1983-07-01 Lussato Bruno Electronic lock for briefcase carrying portable computer - uses matrix of contacts on card which must correspond to contact matrix in lock if lock is to open

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