Classifications

• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B49/00—Electric permutation locks; Circuits therefor ; Mechanical aspects of electronic locks; Mechanical keys therefor
• • 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
  • G07C9/00817—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys where the code of the lock can be programmed
• • 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
  • G07C9/00857—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys where the code of the data carrier can be programmed
• • 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
• • 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
  • G07C9/00817—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys where the code of the lock can be programmed
  • G07C2009/00841—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys where the code of the lock can be programmed by a portable device
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T70/00—Locks
  • Y10T70/70—Operating mechanism
  • Y10T70/7441—Key
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T70/00—Locks
  • Y10T70/70—Operating mechanism
  • Y10T70/7441—Key
  • Y10T70/778—Operating elements
  • Y10T70/7791—Keys

Definitions

• the present invention relates to the field of mechanical / electronic or electronic locks and associated security combination keys.
• lock / key assembly such as in the automobile industry (steering lock) or more generally in industry, in particular for operating authorization. or the security of multiple devices or of racks or electronic cabinets.
• 2,561,292 shows an electronic key which can be implemented with a mechanical / electronic lock and comprising both notches for mechanical coding and an electronic microprocessor circuit supplied with current by a battery disposed directly in a part of the key.
• both of the aforementioned locks have a major defect in that their security essentially depends on the type of cylinder. mechanical used to receive the keys, the electronic device being only an additional security element. Indeed, maximum security is provided above all by a complex production of the cylinder, which has the consequence of causing a very high cost of the lock. In addition, any loss of the key will systematically lead to the replacement of this cylinder (the modification of this mechanical element is not possible), whether or not it is associated with electronic means. Of course, to guarantee this high security, each cylinder is associated with a key and only one.
• the holder of application EP 0 388 997 has envisaged a fully electronic lock in which the opening of a door is controlled in the event of a correspondence between an identification code of the key and that of the lock.
• the key has a memory that can receive several codes corresponding to different locks and the cylinder of each lock has a source of energy for supplying its electronic circuits and those of the key.
• the cylinder described can have standardized dimensions similar to those of a conventional lock cylinder.
• This electronic locking system however still has certain drawbacks, in particular in the event of loss of the key or in the event of weakness of the energy source, which greatly limit its practical interest and in fact prohibit any commercial use thereof. Indeed, for example in the event of loss of his key, the user must systematically resort to the manufacturer who will have to move to carry out a reprogramming of the codes of each lock. Possibly, if the manufacturer authorizes it and he wishes to carry out this reprogramming alone, the user will have to resort to a centralized IT device. But then the complexity of the system thus obtained makes it particularly expensive and difficult to use for a non-professional user.
• the object of the present invention is to overcome the aforementioned drawbacks by proposing a programmable electronic closing device which is particularly simple and inexpensive and can be implemented by any user, even a non-professional one.
• An essential object of the invention is to allow, by individual programming of each key, access by its user to all of the security characteristics of the lock.
• Another object of the invention is also to produce an electronic device which can replace the existing mechanical devices, in particular for the purpose of increasing safety, without requiring excessive expenditure, that is to say without requiring a complex intervention on these devices or the structures in which they are incorporated.
• Yet another object of the invention is to provide a device whose characteristics can be advantageously compared with those of current devices and also has additional functions.
• an electronic programmable closing device comprising a lock intended to be operated by a key when an identity between an identification code of the lock and an identification code of the associated key is observed, characterized in that the lock comprises a barrel provided with a part in which is formed at least one opening for receiving said key, the barrel comprising at least one electrical connection means, an electronic control means comprising at least one memory means for storing at least an identification code and connected to the at least one electrical connection means, and an unlocking means sensitive to said electronic control means and intended to proceed with unlocking the lock, and in that the key comprises a first connection means electrical intended to cooperate with the electrical connection means of the lock when the key is introduced in the corresponding opening, a first electronic control means comprising at least a first memory means for storing at least one identification code and connected to the first electrical connection means and a programming means for modifying, under the control of a means of entering a confidential code, the data contained in each of the electronic means for controlling the key and the lock, the power supply to the electronic means for controlling the key and the
• the presence of means for programming the electronic circuits of the lock and of the key directly at the level of this key prevents the user from having to resort to external programming (via the manufacturer for example) and dispenses him from making a connection. possibly heavy and necessarily expensive IT resources.
• the technical means defined above in combination allow the production of a device which is really com thanks to it, so that it is called upon to to replace the existing mechanical devices, today present on the market. Indeed, the device of the invention is first of all easy to use because it is presented like current systems and therefore does not require a change of habit on the part of the user.
• first and second electrical connection means can be replaced by first and second wireless connection means, for example radiofrequency or optical, arranged respectively in the key and the barrel.
• first and second wireless connection means for example radiofrequency or optical
• the power supply means comprises a rechargeable battery or a disposable battery placed in the key, which avoids frequent and numerous disassembly if this battery or battery was placed in the barrel.
• energy generation means arranged in the barrel of the lock and actuated by the introduction (withdrawal) or the rotation of the key, are provided to allow at least the power supply to the unlocking means which constitutes the largest consumer of energy from the barrel.
• the key is formed of first and second separate parts connected by an intermediate part which can be constituted either by a flexible electrical connection or by a wireless connection.
• the first part is in the form of a rod provided with an operating head and comprising the first electrical connection means and the second part which can act as a multifunction electronic assembly further comprises the electronic and power supply means of the key and the programming means.
• the key is constituted by the separable connection of a first rod-shaped part provided with an operating head and comprising the first means of electrical connection and at least the means of supplying energy and the first memory means, and of a second part which can act as a multifunction electronic assembly and comprising all the means necessary to allow the programming of the data contained in the electronic means of this key and of the lock as well as a third electrical connection means for receiving the first electrical connection means.
• This multifunction electronic assembly can be constituted by numerous current devices and in particular a calculator, an agenda, a watch, a paging receiver, a telephone dialer, an alarm or even a simple sensor of physical parameters.
• the key can also further comprise a complementary connection means intended for remote programming of the data contained in the electronic means for controlling this key and the lock.
• this complementary connection means consists of the first electrical connection means.
• it may include a wireless connection means, for example radiofrequency or optical.
• Each electronic means for controlling the lock or the key or both also comprises comparison means for making a comparison between the identification code of the lock and at least one corresponding code of the key received through the means of electrical connection.
• each identification code comprises first and second identification codes and, in a normal mode, the comparison of the respective identification codes of the lock and of the key is carried out only on the first code identification whereas, in a security mode, this comparison is carried out on the first and second identification codes.
• each identification code is formed by two words of n bits and the electronic means for controlling the lock barrel performs, firstly, by means of comparison means arranged in the barrel, comparing the first word of n bits of the identification code of the lock with the first word of n bits of the code of identification of the key received from the key through the electrical connection means and, in a second step, the first electronic key control means which also includes comparison means performs, in case of identity between these first two words, a comparison between the second word of n bits of the key identification code and the second word n bits of the identification code of the lock received from the lock through the electrical connection means, a new identity relating to these two second words can alone authorize unlocking of the lock.
• the present invention also relates to any lock, any barrel or any key that can be used in the programmable electronic device described.
• the key may further comprise means of sound or light indication to inform the user of the operation of the key in the normal mode or in the security mode or else of good programming.
• the programming means include a specific function key (SECURITY) allowing only users of keys that can operate in the security mode to modify the identification codes of the locks.
• the programming means also include a specific function key (RESERVE) allowing the holder of a key to validate access to one or more locks determined from among all of the locks operable by this key, which allows very simply to prohibit certain persons to whom this key is entrusted access to unauthorized places.
• these programming means may include a determined combination of specific function keys (RESERVE and ZERO) allowing the holder of a key to prohibit its use by deactivating its essential reading and comparison functions.
• this prohibition may only be temporary or be carried out automatically after a determined period of operation.
• FIG. 1 is a partial perspective view of a landing door fitted a lock according to the invention with its associated key
• FIG. 2 represents a schematic view in longitudinal section of an exemplary embodiment of a standardized barrel for the lock of FIG. 1,
• FIGS. 3 and 4 are two other exemplary embodiments of barrels in accordance with the present invention
• - Figures 5 and 6 are exterior views (cover removed) and side view of a first embodiment of the key of Figure 1
• FIG. 7 shows schematically the internal components of the key of Figure 1
• - Figures 8 and 9 show two other embodiments of the key
• FIG. 10 is a flowchart detailing the programming logic of the lock.
• FIG. 1 shows in perspective a partial view of a leaf, for example of a door 10, in which a lock for high safety 12 according to the present invention.
• This lock is provided with a barrel 14 which comprises a cylindrical member 14A forming a rotor in which an opening in the form of a slot 16 is made in which a key 18 can be inserted (more precisely the rod or blade of this key).
• the key 18 which will be described in more detail with reference to FIGS. 5 and 6 comprises, at one end, a first part 18A, called a blade, in the form of a flat rod of dimensions conforming to the opening 16 of the cylindrical rotor 14A of the lock, which can for example have a notched profile (there are indeed other types of coding, for example with fins or fingerprints), and provided with a first electrical connection means 19 comprising a set of individual contacts, to authorize the actuation of a bolt 20 of this lock 12, and, at the other end, a second part 18B, called a head, which can have a ring shape, to allow by its rotation the operation of this bolt and therefore the unlocking of the door leaf 10.
• a first part 18A called a blade
• a blade in the form of a flat rod of dimensions conforming to the opening 16 of the cylindrical rotor 14A of the lock, which can for example have a notched profile (there are indeed other types of coding, for example with fins or fingerprints)
• FIG. 2 shows a very schematic view in longitudinal section of a barrel with a symmetrical European profile with double entry (double cylinder) 14 whose external shapes and dimensions are similar to those of conventional mechanical double cylinders used for locking landing doors d 'house, which allows to simply replace them (after removal of the headrest screw 25 of Figure 1 and extraction of the mechanical cylinder).
• This double barrel conventionally comprises an upstream part 30, a downstream part 32 and an intermediate rotary part 34 for actuating the bolt (directly or through conventional mechanical means).
• Each upstream and downstream part comprises a rotor element 30a (respectively 32a) and a stator element 30b (respectively 32b) surrounding this rotor element in which is made the opening 16 and which is secured (by known means not shown) to the rotary intermediate part 34.
• the rotor element 32a of the downstream part of the barrel of the lock 10 comprises on the one hand a second electrical connection means 39 intended to cooperate with the first electrical connection means 19 of the key and provided with corresponding individual contacts and on the other hand electronic means formed by an electronic circuit 40, advantageously with a microprocessor, comprising a central unit 42 or a similar module, a program memory 44 and a data memory 46 connected by a common bus 48
• the upstream rotor element 30a comprises, in addition to a third electrical connection means 49 accessible on an opposite face of the barrel, locking / unlocking means 50 actuable under the control of the central unit 42 and which make it possible to ensure unlocking.
• unlocking means 50 comprise ent for example advantageously one or more pins or pins 52 mounted movably in one or more first corresponding housings 54 and projecting, in a rest position (locked cylinder), under the action of elastic elements 56 placed in these first housings, in second housings 58 of the upstream stator part 30b facing them.
• An electromagnet 60 or any other similar device is provided to ensure, under the control of the central unit 42, the withdrawal of the pins 52 in their housing 54 and thus allow a free rotation of the rotor elements and therefore an operation of the bolt 20.
• the pins are arranged regularly around the longitudinal axis of the barrel and parallel to this axis, and the electromagnet 60 acts simultaneously on each of the pins to cause displacement (a simple means to ensure this displacement is for example to produce these pins as plunger cores of the electromagnet).
• the barrel can also include energy generation means 62 actuated by the introduction or rotation of the key and supplying the energy necessary for the actuation of the microactuator 60 (electromagnet, micromotor or similar device), without any additional energy supply by means of a rechargeable battery or a disposable battery for example. This last solution which seems a priori simpler however poses the problem of regular replacement of this battery in the barrel.
• locking / unlocking means 50 which comprise a microactuator such as the electromagnet or the micromotor described above could also include a piezoelectric actuator consisting of a screw subjected to the simultaneous action of pairs of piezoelectric pushers located in screw opposite and controlled by the central unit.
• FIG. 3 very schematically show alternative embodiments of the cylinder or lock cylinder 14 also suitable for residential doors.
• this barrel with a European profile is of the simple button cylinder type and the pins 52 are arranged along axes perpendicular to the longitudinal axis of the cylinder (an arrangement along multidirectional axes is of course possible).
• the number of pins is indifferent and unlocking means 50 in the form of a single key placed in a housing formed according to a generator of the rotor element are just as possible.
• FIG. 4 represents a barrel of the half-cylinder type in which the unlocking means 50 and the electronic circuit 40 are arranged on the same side, preferably in the upstream part furthest from the external face of the door 10.
• This key mainly consists of two parts 18A, 18B and comprises, at one end, a flat rod provided with the first connection means electrical 19 comprising a set of individual contacts (formed for example of a ground contact and a simple data contact) intended to cooperate with the corresponding contacts of the second electrical connection means 39 present in the opening 16 of the lock and, at the other end, a head whose shape is indifferent, but which can advantageously be parallelepipedal, and which comprises, protected by a reclosable flap 78 allowing protection of the keyboard and the display out of phases programming, a keyboard 80 provided with a set of function keys 82 and numeric keys 84 and a display 86.
• the first connection means electrical 19 comprising a set of individual contacts (formed for example of a ground contact and a simple data contact) intended to cooperate with the corresponding contacts of the second electrical connection means 39 present in the opening 16 of the lock and, at the other end, a head whose shape is indifferent, but which can advantageously be parallelepipedal, and which comprises, protected by
• an additional connection means 29 can be provided for connecting the key to an external programming module.
• the contacts are arranged at the free end of the rod of the key 18, it is clear that a person skilled in the art can envisage any other configuration, such as an arrangement on the side or on the top of this rod (see in particular the above-mentioned application EP 0 388 997).
• the electrical connection means 19; 39,49 can be reduced to simple wireless data link means of the radio frequency or optical type (infrared for example).
• Figure 7 shows very schematically the different electronic components constituting this key.
• the key 18 comprises, on the one hand, also electronic means 90 comprising a central processing unit 92 or any other equivalent module, a program memory 94 and a data memory 96 connected by a common bus 98 and, on the other hand, a module 95 for supplying energy to these various electronic components, for example a rechargeable battery or a disposable battery, and means for sound or light indication 97.
• This power supply module also constitutes a source of energy for the electronic circuits of the lock for which it supplies power, through the first and second electrical connection means 19, 39.
• the program memory 94 which consists of a read-only memory (or ROM type memory) or any similar circuit, is intended to record the programs necessary for the execution of the various functions useful for controlling the central units 92 and 42 for ensure the safe operation and programming of the lock (it may be noted that the central unit of the barrel can also be controlled by its own program memory 44).
• the data memory 96 which consists of a non-volatile memory such as an electrically erasable programmable read-only memory (or EEPROM), is intended to record different types of data and in particular the different identification codes of the locks accessible by a key given.
• this key 18 When this key 18 includes the complementary connection means 29, the latter is connected directly to the common bus 98 or, in the case of a wireless link with the external programming module, via a specific interface 93, for example an optical or radiofrequency receiver (for an infrared or radiofrequency link). In this case, the sound or light indication means 97 can serve as a witness to good programming.
• the first electrical connection means 19 also as a means of connection to the external programming module for allow remote programming of the data memory 96 of this key.
• specific interfaces must be provided in the key as at the barrel (like the interfaces shown in Figure 8A for the connection wireless between the two parts of the key).
• FIGS. 8 and 9 show two other embodiments of the key 18.
• the first and second parts 18A and 18B are separated and linked together by a flexible cable 18C.
• the first part 18A consists of a simple blade (then terminated by a gripping and operating means) provided with the first electrical connection means 19.
• the second part 18B now presents itself in the form of a multifunction electronic system, such as a calculator or an electronic diary, integrating at least the electronic circuits 90 and the power supply module 95, as well as the complementary connector 29 (including its interface) if necessary.
• the power supply of the barrel and the transfer of data to the electronic circuits of this barrel being carried out by the cable 18C containing the common bus 90.
• this particular configuration has the advantage of being able to be integrated into the invention the multiple functions available today only in a calculator, a diary or an electronic watch, for example a calendar, a telephone directory, a telephone dialer, a pager, a set of measurement of different physical characteristics such as temperature or pressure, or even an alarm control device for a car or a home.
• a wireless link in particular by infrared, could be validly envisaged for the link between the two parts of the key (see for example FIG.
• FIG. 8 shows a variant of the second embodiment of the key described above in which the first and second parts 18A, 18B can be completely dissociated, the first part constituting an extractable element from the second part and electrically connectable to it by the first electrical connection means 19 which cooperates with equivalent means 69 in the second part.
• the battery 95 and the data memory 96 are arranged in the first extractable part 18A of the key (the reading of this memory can indeed be done directly under the control of the central unit 42 of the lock when it is introduced into the barrel), the other electronic elements of this key being able to be present only in its second part 18B.
• each lock has a unique identification code (A or A + B) whereas a key can on the contrary include several distinct identification codes (of type A or A + B).
• a or A + B unique identification code
• a key can on the contrary include several distinct identification codes (of type A or A + B).
• the aforementioned process can be secured in various ways, notably conventionally by a particular coding by encryption key (by means of a specific algorithm).
• a relatively simple security to set up can consist in dividing each code into two words of n bits (for example 2 times 8 bits).
• the key addresses the lock only the first part of its identification code (the first word of n bits) and the lock then performs a comparison between this first part of the code and the first part of its own code identification. If an identity is identified, the electronic circuit of the lock transmits the second part of the lock code to the key which can in turn compare this second part of code with that which it has in memory. In the event of a new identity, it can be carried out as above.
• Another simple way of securing the data communications between the key and the lock is to have at the data memory of the lock 46 a memory space accessible in read only and comprising only a reference number of this lock.
• its central control unit 92 reads through electrical connection means 19 (or any equivalent connection means) the content of this memory space and then sends the lock code only corresponding identification which can then, as before, be compared in the lock to its own identification code.
• electrical connection means 19 or any equivalent connection means
• the modification of the identification codes of the lock as well as of the key can be carried out by the user directly from the key.
• No external IT device personal computer for example
• the user is also not obliged to resort to the manufacturer, even in case of loss of the key. In the latter case, however, the user must have taken care to write down and keep the personal code or codes necessary for reprogramming their new key.
• the programming of the codes at the level of the key 18 is carried out from the keyboard 80 and is checked on the display 86.
• a first step 100 the user activates a first ON / OFF (O) function key to access the various advanced functions (in particular programming) of the key.
• the action on a second SECRET function key (I) during a next step 110 makes it possible to validate the entry of a confidential code (on m bits, for example 5 bits) made by means of the numeric keys 84, in step 120, and to display on the display 86 a first memory location of the key in order in particular to possibly authorize a subsequent modification of the data present at this location.
• This write access is only possible after the action, during step 130, of a third PROGRAM function key (P) and is carried out, in a new step 140, by writing a first lock code also using the numeric keys, the validation of this code being carried out during a terminal step 150 by a fourth function key SET (V).
• the following codes in the event of a plurality of locks or of several code levels, A and B for example) can then be entered by also making use, in subsequent steps 180 and 190, of other movement function keys ( ff DD).
• the key is programmed and is ready to operate, and the first ON / OFF function key can be pressed again to end the key programming process.
• This manual programming process described above can be applied as well during a first programming as during subsequent modifications of one or more codes or addition of new codes.
• automatic programming is equally possible and is even preferable when greater security is sought (in terms of housing in particular).
• This can be carried out after the entry of the confidential code and on the basis of an internal algorithm present in the read-only memory 94.
• the entry of an additional personal code may in this case be necessary to allow the generation of the different identification codes.
• To carry out the programming of the codes at the level of the various locks it is necessary to introduce the key into the lock for which it is desired to modify the identification code.
• the user first of all successively actuates the ON / OFF and SECRET function keys, enters their confidential code, and introduces the key in the lock (it is here possible to search for the memory location corresponding to the code of the lock to change with the arrow keys, as previously indicated).
• the electronic circuit of the key and / or the electronic circuit of the lock verifies then, in step 200, the identity of the identification codes of the lock and key and validates, in a next step 210, the action on the third PROGRAM function key which allows the entry of a new identification code (step 220) which, after pressing the fourth SET function key in step 230, is transmitted to the lock for entry in its memory of data.
• the key can then be removed from the lock and the ON / OFF key pressed one last time.
• Additional function keys are also provided to program the lock in normal mode (with comparison on code A only) and in high security mode (comparison on codes A and B). These two keys NORMAL (N) and SECURITY (S) are only active for a user having a key comprising identification codes provided with codes A and B.
• NORMAL (N) and SECURITY (S) are only active for a user having a key comprising identification codes provided with codes A and B.
• the emission by the sound or light indication means 97 of one or two sound or light signals allows the user to be informed of the current mode. These signals can also be emitted during the introduction of the key to validate the connection.
• a RESERVE (R) key can also be provided to limit the use of the key to one or more locks.
• the deactivation function thus obtained which can be only temporary or be carried out automatically after a determined period of operation, is particularly useful when the user has several copies of the same key and some of the inputs remain unused ( these keys can therefore be deactivated and made unusable in the event of loss or theft). Note that for total security, this function could advantageously be activated between two uses.
• the programmable closing device according to the invention is therefore perfectly suited to replace, with greater safety and flexibility of use, the current mechanical devices while providing them with many new particularly interesting functions.
• Other improvements can also be envisaged, in particular with a view to reducing the consumption of the key battery or further improving its security.
• the life of the battery can be significantly increased by dissociating, as has been said previously, the power supply of the electronic circuits, effected by this battery, from that necessary for controlling the release of the bolt (control of the microactuator 60).
• At least three known solutions are currently possible for creating, by the introduction or rotation of the key, the electric current necessary for this control.
• this current can be generated by a magnetic induction resulting for example from the displacement of a magnet, under the effect of the introduction of the key, in a coil which surrounds it (it may be preferable to store the current induced by the change in magnetic flux rather than using it immediately).
• this current can also be produced by a mini-generator of current launched by the rotation of the key and coupled to an adequate reduction device.
• piezoelectric generators can also be considered. These systems are based on a mechanical device which, driven by the introduction or rotation of the key, exerts a force on a piezoelectric crystal (directly or through an elastic element constrained by this device) which in return generates charges creating electric current.
• the security of the device can be increased by conventionally protecting the barrel and the key against electromagnetic emissions by radiation or by preventing unauthorized access (due to a successive scanning of all the codes in particular), for example by obliging the user to withdraw his key after any unsuccessful attempt or by imposing a minimum waiting period before any new attempt.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Lock And Its Accessories (AREA)
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Applications Claiming Priority (3)

Publications (2)

Family

ID=9475470

Family Applications (1)

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Cited By (1)

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• 1995
  • 1995-01-25 FR FR9500822A patent/FR2729700B1/fr not_active Expired - Fee Related
• 1996
  • 1996-01-03 SK SK977-97A patent/SK97797A3/sk unknown
  • 1996-01-03 CZ CZ972388A patent/CZ238897A3/cs unknown
  • 1996-01-03 BR BR9606857A patent/BR9606857A/pt not_active IP Right Cessation
  • 1996-01-03 DE DE1996608665 patent/DE69608665T2/de not_active Expired - Lifetime
  • 1996-01-03 US US08/894,217 patent/US6331812B1/en not_active Expired - Lifetime
  • 1996-01-03 WO PCT/FR1996/000003 patent/WO1996023122A1/fr not_active Application Discontinuation
  • 1996-01-03 KR KR1019970705078A patent/KR19980701682A/ko not_active IP Right Cessation
  • 1996-01-03 EE EE9700158A patent/EE03314B1/xx not_active IP Right Cessation
  • 1996-01-03 CA CA 2211256 patent/CA2211256A1/en not_active Abandoned
  • 1996-01-03 PL PL96321537A patent/PL180493B1/pl unknown
  • 1996-01-03 TR TR97/00690T patent/TR199700690T1/xx unknown
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