EP0242578A2 - Procédé de transmission bidirectionnelle de données et application à un système de serrure - Google Patents

Procédé de transmission bidirectionnelle de données et application à un système de serrure Download PDF

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Publication number
EP0242578A2
EP0242578A2 EP87103669A EP87103669A EP0242578A2 EP 0242578 A2 EP0242578 A2 EP 0242578A2 EP 87103669 A EP87103669 A EP 87103669A EP 87103669 A EP87103669 A EP 87103669A EP 0242578 A2 EP0242578 A2 EP 0242578A2
Authority
EP
European Patent Office
Prior art keywords
key
lock
microprocessor
circuit
electronic lock
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP87103669A
Other languages
German (de)
English (en)
Other versions
EP0242578A3 (fr
Inventor
Klaus Dipl.-Ing. Stösser
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.)
BKS GmbH
Original Assignee
BKS GmbH
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 BKS GmbH filed Critical BKS GmbH
Publication of EP0242578A2 publication Critical patent/EP0242578A2/fr
Publication of EP0242578A3 publication Critical patent/EP0242578A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional 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
    • G07C2009/00769—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 wireless means
    • G07C2009/00785—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 wireless means by light

Definitions

  • the invention relates to a method for bidirectional data transmission and an electronic lock system operating in accordance therewith, in which the mutual data transfer between the key and lock takes place via existing light transmitters and receivers forming a transmission channel, in particular semiconductor diodes working in the infrared range.
  • An electronic lock system working according to the above method is known from DE-OS 32 34 538. It is intended in particular for motor vehicles with a built-in central locking system, with copying of the key-side transmission signal by Unbe added should be prevented that a new matching code number is set in the transmitter and receiver after each transmission and reception process and that the key from the returning lock is sent an acknowledgment signal for switching to the next code.
  • the data exchange taking place in dialog form between the key and the lock can be carried out as far as desired, so that such lock systems can meet the highest security requirements.
  • an infrared light-emitting photodiode and a transmission channel containing the light-receiving phototransistor are required for each data transmission direction, so that, on the key and lock side, one photodiode and one phototransistor together with associated amplifiers and the like Receive circuit are required.
  • the accommodation of a particular receiving and transmitting circuit is particularly disadvantageous on the key side, because the key offers only limited accommodation options because of its spatial dimensions, unless it would have to be dimensioned excessively large.
  • the invention is based on the object of improving and perfecting a method for bidirectional data transmission in an electronic lock system of the type mentioned at the outset in such a way that it requires less circuitry and in particular avoids installation difficulties which occur on the key side.
  • This object is essentially achieved in that the data transfer between the key and the lock is carried out in both directions over one and the same transmission channel with a corresponding change of transmitter and receiver. So after that Always the same transmission channel is used for data transfer both in the direction from the key to the lock and in the opposite direction.
  • An electronic lock system operating according to the method of the invention the key and lock of which are each provided in a known manner with a microprocessor and a transmission and reception circuit which can be alternately switched to its input and output and which contains amplifiers and infrared transmitters and receivers designed in such a way that in the key and in the lock only one circuit containing a semiconductor diode is provided and both circuits can be switched in opposite directions by the associated microprocessor as the transmitting and receiving circuit.
  • a microprocessor and a transmission and reception circuit which can be alternately switched to its input and output and which contains amplifiers and infrared transmitters and receivers designed in such a way that in the key and in the lock only one circuit containing a semiconductor diode is provided and both circuits can be switched in opposite directions by the associated microprocessor as the transmitting and receiving circuit.
  • the transmitting or receiving circuits in the key and lock can have the same circuit. This means a further significant simplification, especially in terms of production and assembly.
  • the semiconductor diode can be applied alternately in the forward and reverse direction by means of a changeover switch (relay) which is built into its circuit and controlled by the microprocessor. If the semiconductor diode is operated in the forward direction, it works as a transmitter that emits infrared light, whereas when the voltage is applied in the reverse direction, it acts as a light receiver ger works in photodiode circuit. However, since the changeover switches causing the voltage reversal still have a not inconsiderable electrical resistance, it is necessary to work with comparatively larger voltages in order to obtain a sufficient photodiode current.
  • a transistor is installed in the voltage supply line to the semiconductor diode and can be released by the output of the associated microprocessor in the sense of data transmission. In this case, low-voltage transmission and reception is possible with mutual data exchange.
  • the dash-dotted box A contains the electronics belonging to the lock and the box B the electronics belonging to the corresponding key.
  • the lock A is provided with a microprocessor 1, which allows the lock bolt to be locked or released via a control circuit 2.
  • a circuit 3 which is used both for sending and receiving data to be transmitted, is connected, in which the semiconductor diode 6 as well as the one between the two opposing switches 4, 5 associated resistors 7 and 8 are located.
  • the opposite switch 4; 5 can, as dashed indicated, are actuated or switched by the relay 9 controlled by the microprocessor 1, in such a way that the photodiode 6 is thereby to be applied to voltage either in the forward direction (FIG. 1) or in the blocking direction (FIG. 2).
  • the key B is provided with a corresponding microprocessor 1 'and, moreover, has the same circuit as the lock A, that is to say a corresponding circuit 3' with switches 4 ', 5', the semiconductor diode 6 1 , the resistors 7 ', 8 present therein 'and the relay 9 1 .
  • the z. B. from the semiconductor material gallium arsenide existing semiconductor diode 6 in the forward direction. As a result, it works as an infrared transmitter, being able to emit the data signal 10 coming from the microprocessor 1 in the direction of the key B.
  • the latter is set to receive this data signal 10 by virtue of the fact that its photodiode 6 'acts as a photodiode, since it is in the blocking direction by the changeover switches 4 1 , 5'.
  • the semiconductor diode 6 'thus becomes a radiation detector, with increasing radiation of its semiconductor barrier layer additionally creating free charge carriers which considerably increase its reverse current, which is low in itself.
  • the ratios are in the case of FIG. 2, where after corresponding switching-controlled by their microprocessors 1 and 1 1 relay 9 and 9 'and the change-over switch 4, 5 or 4', 5 'now in the forward direction to Voltage-sensitive semiconductor diode 6 'to the infrared light-emitting transmitter and the lock side, in the reverse direction, voltage-sensitive semiconductor diode 6 to the light-receiving photodiode which is able to receive the data signal 10 'emitted by the key B and to pass it on to the lock-side microprocessor 1.
  • FIGS. 3 and 4 the operation of the electronic lock system shown in FIGS. 3 and 4 is simpler and less stressful, wherein A and B in turn represent the lock and key side, 1 and 1 'the associated microprocessors.
  • transistors 11 and 11 ' are installed in the associated circuits 3 and 3', which in turn correspond in terms of circuitry, which allow the semiconductor diodes 6, 6 'to be operated more easily.
  • an operational amplifier 12 with associated resistor R and the resistors 13 and R LED are also present in the circuits 3, 3 '.
  • the circuit in lock A operates in the transmit mode, the semiconductor diode 6 being switched through the transistor 11 in the forward direction and therefore emitting infrared light.
  • the light radiation is controlled accordingly by the data signal 10 supplied to the transistor 11 by the microprocessor 1. Since the transistor 11 'located on the key side is blocked by the basic signal 10''coming from the microprocessor 1' and the semiconductor diode 6 'thus with no external power supply, it works as a photodiode.
  • the light emitted by the lock-side semiconductor diode 6 thus generates a photo voltage in the key-side semiconductor diode 6 ', which is amplified in the operational amplifier 12' and further processed in the subsequent electronic circuit in the microprocessor 1 '.

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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)
  • Optical Communication System (AREA)
EP87103669A 1986-04-23 1987-03-13 Procédé de transmission bidirectionnelle de données et application à un système de serrure Withdrawn EP0242578A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3613666 1986-04-23
DE19863613666 DE3613666A1 (de) 1986-04-23 1986-04-23 Verfahren zur bidirektionalen datenuebertragung und danach arbeitendes elektronisches schlosssystem

Publications (2)

Publication Number Publication Date
EP0242578A2 true EP0242578A2 (fr) 1987-10-28
EP0242578A3 EP0242578A3 (fr) 1989-02-01

Family

ID=6299297

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87103669A Withdrawn EP0242578A3 (fr) 1986-04-23 1987-03-13 Procédé de transmission bidirectionnelle de données et application à un système de serrure

Country Status (2)

Country Link
EP (1) EP0242578A3 (fr)
DE (1) DE3613666A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3836026A1 (de) * 1988-10-22 1990-04-26 Zimmer Hans J Zentralverriegelung fuer eine mehrzahl von einheiten und/oder teilen einer gesamtanlage, insbesondere diebstahlsicherung fuer kraftfahrzeuge
WO1999047774A1 (fr) * 1998-03-17 1999-09-23 Schlumberger Systemes Dispositif bidirectionnel de transfert d'energie et de donnees entre deux circuits sans connexion electrique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19647214C1 (de) * 1996-11-15 1998-02-12 Zam Ev Anordnung zum optischen Empfangen und Senden von Daten

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0151087A2 (fr) * 1984-01-27 1985-08-07 Angewandte Digital Elektronik GmbH Dispositif pour échange mutuel d'information
FR2570841A1 (fr) * 1984-09-25 1986-03-28 Thomson Csf Dispositif optoelectronique emetteur-recepteur dans un systeme de transmission d'informations par fibre optique comprenant un organe de test in situ

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2629356C2 (de) * 1976-06-30 1983-07-21 AEG-Telefunken Nachrichtentechnik GmbH, 7150 Backnang Elektrooptischer Wandler zum Senden oder Empfangen
DE2828624C3 (de) * 1978-06-29 1981-10-29 Siemens AG, 1000 Berlin und 8000 München Einrichtung zur Rückkanalübertragung bei der Programmübertragung über Lichtwellenleiter
US4289373A (en) * 1978-08-17 1981-09-15 Nippon Electric Co., Ltd. Bidirectional optical fiber transmission system
US4317232A (en) * 1979-01-12 1982-02-23 Deere & Company Fiber optic signal conditioning circuit
DE3225754A1 (de) * 1982-07-09 1984-01-12 Hülsbeck & Fürst GmbH & Co KG, 5620 Velbert Verfahren zur schliesswirksamen wechselwirkung eines schluesselartigen teils mit einem schlossartigen teil
DE3326406A1 (de) * 1983-07-22 1985-02-07 ANT Nachrichtentechnik GmbH, 7150 Backnang Optische sende- und empfangseinheit
DE3344751A1 (de) * 1983-12-10 1985-06-20 Dornier Gmbh, 7990 Friedrichshafen Programmierkoppler
DE3406746A1 (de) * 1984-02-24 1985-08-29 Vdo Adolf Schindling Ag, 6000 Frankfurt Steuervorrichtung
DE3524430A1 (de) * 1985-07-09 1987-01-22 Albatron Elektronik Gmbh Vorrichtung zur verbindung der schnittstellen insbesondere des typs v24 selbstaendiger schaltwerke von datenverarbeitungsanlagen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0151087A2 (fr) * 1984-01-27 1985-08-07 Angewandte Digital Elektronik GmbH Dispositif pour échange mutuel d'information
FR2570841A1 (fr) * 1984-09-25 1986-03-28 Thomson Csf Dispositif optoelectronique emetteur-recepteur dans un systeme de transmission d'informations par fibre optique comprenant un organe de test in situ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, Band 13, Nr. 3, August 1970, Seite 651, Armonk, New York, US; F.D. OWEN et al.: "SOLID-STATE CONTROL CIRCUIT FOR BILATERAL LED" *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3836026A1 (de) * 1988-10-22 1990-04-26 Zimmer Hans J Zentralverriegelung fuer eine mehrzahl von einheiten und/oder teilen einer gesamtanlage, insbesondere diebstahlsicherung fuer kraftfahrzeuge
WO1999047774A1 (fr) * 1998-03-17 1999-09-23 Schlumberger Systemes Dispositif bidirectionnel de transfert d'energie et de donnees entre deux circuits sans connexion electrique
FR2776412A1 (fr) * 1998-03-17 1999-09-24 Schlumberger Ind Sa Dispositif bidirectionnel de transfert d'energie et de donnees entre deux circuits sans connexion electrique

Also Published As

Publication number Publication date
DE3613666A1 (de) 1987-10-29
EP0242578A3 (fr) 1989-02-01

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