EP0490008B1 - Sicherheitsschloss mit elektro-mechanischem Schlüssel - Google Patents

Sicherheitsschloss mit elektro-mechanischem Schlüssel Download PDF

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Publication number
EP0490008B1
EP0490008B1 EP90440118A EP90440118A EP0490008B1 EP 0490008 B1 EP0490008 B1 EP 0490008B1 EP 90440118 A EP90440118 A EP 90440118A EP 90440118 A EP90440118 A EP 90440118A EP 0490008 B1 EP0490008 B1 EP 0490008B1
Authority
EP
European Patent Office
Prior art keywords
key
lock
electrical
signal
electronic circuit
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
EP90440118A
Other languages
English (en)
French (fr)
Other versions
EP0490008A1 (de
Inventor
Eric Barge
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.)
Deny
Original Assignee
Deny
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 Deny filed Critical Deny
Priority to EP90440118A priority Critical patent/EP0490008B1/de
Priority to DE69032428T priority patent/DE69032428D1/de
Priority to AT90440118T priority patent/ATE167545T1/de
Publication of EP0490008A1 publication Critical patent/EP0490008A1/de
Application granted granted Critical
Publication of EP0490008B1 publication Critical patent/EP0490008B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the present invention relates to a lock device inviolable comprising a key whose operation is both mechanical and electronic.
  • the present invention intends to remedy these drawbacks by proposing a device incorporating a mechanical key having at least one bit connected to a lock by only two or three electrical contacts one of which is the bit itself, the key and the lock incorporating electronic circuits and exchanging signals coded identification.
  • the present invention thus relates to a device for control of the bolt of a lock of the type comprising a key having an electrically conductive rod and at least a bit and a lock comprising a key housing, said key being adapted to control the rotation of said key housing, said lock comprising a circuit electronic and electrical control means of the bolt, comprising an electronic circuit connected to contacts electrical, said electronic circuit including a memory, characterized in that the key contacts include the electrically conductive rod or a blade of said rod and a second electrical contact positioned at the end of the key and electrically isolated from said rod, said electronic circuit comprises a modulator-demodulator connected to electrical contacts of the key and a digital circuit connected to this modulator-demodulator in such a way that the logic signals emitted by the lock and by the circuit modulate a tension power supply to the circuit, said key housing comprises rotating electrical contacts corresponding to electrical contacts of the key and the electronic circuit of the lock includes a modulator-demodulator connected to one of the rotating electrical contacts, a microcontroller or a serial
  • Figure 1 an electrically rod conductor 1 carrying two bits 2 and 3 and an electrical contact 4, hollowed out along its axis by a recess 5, said recess 5 containing an electrical connection 6 electrically connected to electrical contact 4 and isolated electrically from rod 1, rod 1 and the electrical connection 6 being connected to two terminals 8 and 9 of an electronic circuit 50 comprising a modulator-demodulator 7, said modulator-demodulator 7 being in turn connected to a digital circuit 10 by four electrical connections 11, 12, 13 and 14.
  • the rod 1 and the bits 2 and 3 are mechanically compatible with mechanical locks classics.
  • the modulator-demodulator 7 transmits, depending on the electrical signal which it receives between the rod 1 and the connection 6, two reference voltages, one positive on link 11, the other negative on link 14 and a binary signal on link connection 13. To do this, the modulator-demodulator 7 can in particular contain a digitizer, a threshold circuit, capacitors or operational amplifiers, depending on known electrical diagrams.
  • the electrical connections 6, 11, 12, 13, 14 can be made by electric wires or by tracks on a printed circuit, for example.
  • the digital circuit 10 includes a memory not volatile 15 and a coding means 16.
  • Non-volatile memory 15 keeps a unique identification number.
  • Way to coding 16 codes the signal received on link 13 according to the identification number kept in memory 15, according to a common mathematical combination of all keys and stored in memory 15, or in a combination mathematics performed by wired or masked logic, and returns an encoded signal on link 12.
  • the coding means 16 may in particular consist of a microcontroller with hidden memory.
  • the function of the modulator-demodulator 7 is therefore, at input, to demodulate a variable signal and a signal DC voltage both carried by the rod 1 and the link electric 6, and, at the output, to modulate the variable signal from circuit 10 with the DC voltage signal from so as to emit this modulated signal on link 6 and the rod 1.
  • the modulator-demodulator 7 can modulate and demodulate the signals by multiplication or addition.
  • the number kept in memory 15 is inviolable since the coding carried out by the microcontroller 16 prevents direct reading of the number kept in ROM 15.
  • the description of Figures 2 and 3 will help to understand what types of signals are sent to the key between rod 1 and the electrical contact 4.
  • the rod 1 serves as ground and carries a zero reference voltage.
  • FIG. 2 a housing of key 17 comprising two rotary electrical contacts 18 and 52, a bolt 49, an electrical control means 25 of the bolt 49, a driver 26, a mechanical bolt guide 27 and a circuit electronics 51 comprising a modulator-demodulator 19, a power supply 20, a microcontroller 21, a generator random numbers 22 and a memory 23.
  • Contact 18 and modulator-demodulator 19 are connected by a link electric 28.
  • the microcontroller 21 is connected by means of control 25 by electrical connections 29.
  • the key housing 17 has a rotation controlled by the key as shown opposite the figure 1.
  • the electrical contacts 18 and 52 are placed opposite of the key contacts and the electrical contacts between the key and the lock are secured during the rotation of the housing of key 17.
  • the lock shown opposite of Figure 2 includes the elements of a mechanical lock classic, namely a rotary key housing 17 and a bolt 49.
  • control means 25 can be consisting of an electric clutch connecting mechanical key housing 17 and coach 26.
  • the control means 25 can also be constituted electro-motor circuits of electric bolt, these circuits being directly controlled by the electronic circuit 51.
  • the electronic circuit 51 has a similar function to that presented for electronic circuit 50 opposite Figure 1.
  • the modulator-demodulator 19 modulates the signal representing the random number generated by the generator 22 by the supply voltage from the supply electric 20.
  • the signal from the key is demodulated by the modulator-demodulator 19 and the microcontroller 21 checks that this signal represents a number equal to one of those which are stored in memory 23.
  • the signals presented in figure 3 correspond to the device as presented opposite Figures 1 and 2 with modulator-demodulators 7 and 19 operating by multiplication.
  • a binary signal representing a random number 38, a voltage signal of reference 39, a signal 40 corresponding to the modulation of the signal 39 by signal 38, a signal 41 for coding signal 38 by the microcontroller 16, a signal 42 corresponding to the modulation of signal 39 by signal 41.
  • These signals are represented on time axes whose origins are vertically aligned.
  • Binary signals vary between zero and one, while voltage signals and modulated signals vary between a low voltage V1 and the reference voltage V.
  • the signal 38 corresponds to the signal emitted by the microcontroller 21 to the modulator-demodulator 19.
  • the signal 39 corresponds to the reference voltage emitted by the power supply 20.
  • the signal 40 corresponds to the signal sent by the modulator-demodulator 19 to the modulator-demodulator 7. It is easy to understand that signal 39 is the signal present on electrical connections 11 and 14 and that signal 38 is the signal present on the electrical connection 13, after demodulation of signal 40 by the modulator-demodulator 7.
  • the signal 41 corresponds to the signal emitted by the digital circuit 10 on the electrical connection 12.
  • the signal 42 corresponds to the signal emitted by the modulator-demodulator 7 towards the modulator-demodulator 19.
  • the signal 41 corresponds to the signal transmitted by the modulator-demodulator 19 to the microcontroller 21.
  • the signal 40 takes the low value V1 when signal 38 corresponds to a signal value logic 1 and the value of the reference voltage V when signal 38 corresponds to a logical value signal 0, the same correspondence existing between signals 42 and 41.
  • FIG. 4 represents a second mode of realization of the key according to the invention. There are all elements of Figure 1 except digital circuit 10 and its electrical connections.
  • the circuit electronics 10 is replaced by a serial-parallel interface circuit 42 and by a programmable read only memory 43, commonly known as PROM.
  • PROM programmable read only memory
  • the read only memory 43 retains share an identification number and also serve as a table conversion, i.e. its address bus 44 is connected at the parallel output 45 of the interface circuit 42.
  • This assembly is known by the English name of look-up table. Function mathematical is then coded in the conversion table.
  • the serial-parallel interface circuit 42 works here in both directions, as input by transforming the signal from modulator-demodulator 7 as a signal parallel on parallel output 45 and transforming output the outgoing parallel signal on the data bus 46 of the memory 43 and entering on its parallel input bus 47 in serial signal which is transmitted to the modulator-demodulator 7.
  • Figure 5 is shown a third mode for producing the key according to the invention comprising all the elements of figure 1 as well as a number generator random 48.
  • the key first transmits a random number towards the lock which codes this number thanks to a second mathematical function wired or stored in memory dead. This number being coded is returned to the key according to a operation similar to that presented previously, in look at figure 1, 2 and 3.
  • the invention does not limit the number of electrical contacts between the key and the lock.
  • the panetons 2 and 3 can be electrically insulated each other and each serve as an electrical contact for the control of a demodulator circuit 7 and 19 are eliminated, the three electrical connections between circuits 50 and 51 one carrying a reference voltage, the other a voltage power supply and the third the signals exchanged by these circuits.
  • the invention is particularly of interest for separate restricted areas with openings provided with a lock according to the invention of a room whose access is fitted with a conventional mechanical lock.
  • the device object of the present invention of memorize access and identify the keys used.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)

Claims (9)

  1. Vorrichtung zur Betätigung des Riegels (49) eines Schlosses, mit einem Schlüssel, der einen elektrisch leitfähigen Schaft (1) und wenigstens einen Schlüsselbart (2, 3) aufweist, und mit einem Schloß, das eine Schlüsselaufnahme (17) aufweist, wobei der Schlüssel daran angepaßt ist, die Drehung der Schlüsselaufnahme (17) herbeizuführen, wobei das Schloß einen elektronischen Schaltkreis (51) und ein Mittel (25) zur elektrischen Betätigung des Riegels (49) aufweist, mit einem elektronischen Schaltkreis (50), der mit elektrischen Kontakten verbunden ist, wobei der elektronische Schaltkreis (50) einen Speicher (15) aufweist, dadurch gekennzeichnet, daß
    die Kontakte des Schlüssels den elektrisch leitfähigen Schaft (1) oder einen Schlüsselbart (2, 3) des Schaftes und einen zweiten elektrischen Kontakt (4) aufweisen, der am Ende des Schlüssels angeordnet und gegen den Schaft (1) elektrisch isoliert ist,
    der elektronische Schaltkreis (50) einen Modulator/Demodulator (7), der mit den elektrischen Kontakten des Schlüssels verbunden ist, und einen Digitalschaltkreis (10) aufweist, der mit diesem Modulator/Demodulator (7) derart verbunden ist, daß die logischen Signale, die durch das Schloß und durch den Schaltkreis (10) abgegeben werden, eine Speisespannung des Schaltkreises (50) modulieren,
    die Schlüsselaufnahme (17) elektrische Drehkontakte (18, 52) entsprechend den elektrischen Kontakten des Schlüssels aufweist und
    der elektronische Schaltkreis (51) des Schlosses einen Modulator/Demodulator (19), der mit einem der elektrischen Drehkontakte (18) verbunden ist, einen Mikrocontroller (21) oder einen Reihen-Parallel-Interface-Schaltkreis (42), der mit einem Mittel (25) zur elektrischen Betätigung des Riegels (49) verbunden ist, und einen Speicher (23) aufweist, wobei der Mikrocontroller (21) darauf eingerichtet ist, das Mittel (25) zur elektrischen Betätigung zu speisen.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Schlüsselaufnahme (17) und der Schlüssel jeweils zwei elektrische Kontakte aufweisen.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Schlüsselaufnahme (17) und der Schlüssel jeweils drei elektrische Kontakte aufweisen.
  4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Riegel (49) durch eine von dem elektronischen Schaltkreis (51) gesteuerte, elektrische Kupplung (25) mechanisch mit der Schlüsselaufnahme (17) verbunden ist.
  5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Riegel (49) elektrisch ist und durch den elektronischen Schaltkreis (51) gesteuert ist.
  6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Codiermittel (16) ein Mikrocontroller ist.
  7. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Codiermittel (16) eine Umwandlungstabelle ist.
  8. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sie einen Zufallszahlengenerator (22, 48) aufweist.
  9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß der elektronische Schaltkreis (50) den Zufallszahlengenerator (48) aufweist und daß das Schloß ein zweites Codiermittel für von dem Schlüssel empfangene Signale aufweist.
EP90440118A 1990-12-11 1990-12-11 Sicherheitsschloss mit elektro-mechanischem Schlüssel Expired - Lifetime EP0490008B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP90440118A EP0490008B1 (de) 1990-12-11 1990-12-11 Sicherheitsschloss mit elektro-mechanischem Schlüssel
DE69032428T DE69032428D1 (de) 1990-12-11 1990-12-11 Sicherheitsschloss mit elektro-mechanischem Schlüssel
AT90440118T ATE167545T1 (de) 1990-12-11 1990-12-11 Sicherheitsschloss mit elektro-mechanischem schlüssel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90440118A EP0490008B1 (de) 1990-12-11 1990-12-11 Sicherheitsschloss mit elektro-mechanischem Schlüssel

Publications (2)

Publication Number Publication Date
EP0490008A1 EP0490008A1 (de) 1992-06-17
EP0490008B1 true EP0490008B1 (de) 1998-06-17

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ID=8205820

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EP90440118A Expired - Lifetime EP0490008B1 (de) 1990-12-11 1990-12-11 Sicherheitsschloss mit elektro-mechanischem Schlüssel

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EP (1) EP0490008B1 (de)
AT (1) ATE167545T1 (de)
DE (1) DE69032428D1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2711716B1 (fr) * 1993-10-29 1995-12-15 Setics Dispositif de verrouillage électronique à clé.
FR2738586A1 (fr) * 1995-09-07 1997-03-14 Valeo Electronique Cle a contact et dispositif de verrouillage a cle et serrure l'incorporant, notamment pour vehicule automobile
KR100577080B1 (ko) * 1999-07-06 2006-05-04 주식회사 유니패스 전자식 록 구조
DE102006010794A1 (de) 2006-03-08 2007-09-13 Hewi Heinrich Wilke Gmbh Schlüssel mit Kontakteinrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4209782A (en) * 1976-08-05 1980-06-24 Maximilian Wachtler Method and circuit arrangement for the electronically controlled release of door, safe and function locks using electronically coded keys
GB2073808B (en) * 1980-04-11 1984-05-23 Haskell H A Electronic locks
US4642631A (en) * 1984-11-01 1987-02-10 Rak Stanley C Interactive security system

Also Published As

Publication number Publication date
EP0490008A1 (de) 1992-06-17
DE69032428D1 (de) 1998-07-23
ATE167545T1 (de) 1998-07-15

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