EP0895559A1 - Locking system, particularly for motor vehicles - Google Patents

Locking system, particularly for motor vehicles

Info

Publication number
EP0895559A1
EP0895559A1 EP97918137A EP97918137A EP0895559A1 EP 0895559 A1 EP0895559 A1 EP 0895559A1 EP 97918137 A EP97918137 A EP 97918137A EP 97918137 A EP97918137 A EP 97918137A EP 0895559 A1 EP0895559 A1 EP 0895559A1
Authority
EP
European Patent Office
Prior art keywords
handle
locking system
electrode
data
control unit
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.)
Granted
Application number
EP97918137A
Other languages
German (de)
French (fr)
Other versions
EP0895559B1 (en
Inventor
Andreas Van Den Boom
Stefan Lange
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.)
Huf Huelsbeck and Fuerst GmbH and Co KG
Original Assignee
Huf Huelsbeck and Fuerst GmbH and Co KG
Huelsbeck and Fuerst GmbH and Co KG
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 Huf Huelsbeck and Fuerst GmbH and Co KG, Huelsbeck and Fuerst GmbH and Co KG filed Critical Huf Huelsbeck and Fuerst GmbH and Co KG
Publication of EP0895559A1 publication Critical patent/EP0895559A1/en
Application granted granted Critical
Publication of EP0895559B1 publication Critical patent/EP0895559B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/54—Electrical circuits
    • E05B81/64—Monitoring or sensing, e.g. by using switches or sensors
    • E05B81/76—Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles
    • E05B81/78—Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles as part of a hands-free locking or unlocking operation
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/54—Electrical circuits
    • E05B81/64—Monitoring or sensing, e.g. by using switches or sensors
    • E05B81/76—Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles
    • 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
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/54—Electrical circuits
    • E05B81/64—Monitoring or sensing, e.g. by using switches or sensors
    • E05B81/76—Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles
    • E05B81/77—Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles comprising sensors detecting the presence of the hand of a user
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
    • E05B85/10—Handles
    • E05B85/14—Handles pivoted about an axis parallel to the wing
    • E05B85/16—Handles pivoted about an axis parallel to the wing a longitudinal grip part being pivoted at one end about an axis perpendicular to the longitudinal axis of the grip part
    • 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
    • G07C2009/00793—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 Hertzian waves
    • 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
    • G07C2209/00—Indexing scheme relating to groups G07C9/00 - G07C9/38
    • G07C2209/60—Indexing scheme relating to groups G07C9/00174 - G07C9/00944
    • G07C2209/63—Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle
    • G07C2209/65—Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle using means for sensing the user's hand

Definitions

  • the invention relates to a locking system of the type mentioned in the preamble of claim 1.
  • access authorization is checked by means of an electromagnetic data query.
  • the field of application of the invention is particularly directed to motor vehicles, access to security zones, etc.
  • Vehicle-mounted mechanical switch or a sensor e.g. one
  • Light barrier triggered, which on a door handle or at least in the area of a
  • Data carrier by a control unit, e.g. in a vehicle, by actuating the switch, more precisely by moving the door handle, or by means of the
  • the triggered pulse is passed on from the control unit to a transmitter, which transmits the data query to the data carrier.
  • the data carrier receives the command to query the data and passes it on to a data unit, which sends the requested data to one
  • the transmitter then transmits the data again via the vehicle-side transmission / reception unit to the control unit in the vehicle, which issues a command to unlock the locking system in the event of positive data recognition
  • the data query therefore only occurs when a handle such as a handle or a flap of a door handle is actuated for the first time, and thus at a relatively late point in time, since, as described in the description above can be seen, follow a few steps.
  • This delayed data query, as well as the subsequent reaction time of a central locking make such a system uncomfortable. In some cases, this means that the locking system is not yet unlocked when the door handle is operated for the first time and the person requesting access must press the door handle again to open a door
  • a security system for securing a motor vehicle in which the data query of a transponder is triggered inductively by an induction coil arranged on the vehicle near a door handle.
  • the person requesting access triggers the data query of the transponder in that it approaches the vehicle with the induction coil, and the transponder is thereby addressed.
  • the transponder then sends the data stored in it, the identification code, to a control unit which checks the access authorization. In the event of positive data recognition, the control unit then issues the command to unlock the locking system
  • the locking system can be inadvertently unlocked if the user inadvertently and accidentally approaches his vehicle, which is secured by the described safety device, after the closing process
  • the data carrier consists of a luminescent diode which is attached to a portable transmitter.
  • a receiver is located on the door-side locking device and is coupled to control electronics , which evaluates an incoming signal from the portable transmitter.
  • the user To unlock the locking system, the user must point the portable transmitter with the LED at the locking device-side receiver and operate the transmitter.
  • the light signal emitted by the transmitter which has a characteristic wavelength, is then received by the receiver and transmitted to the control unit, which checks whether there is a coincidence between the emitted by the transmitter and the set light frequency. If this is the case, the control unit releases the locking device
  • a locking system is known from DE 36 21 592 Cl, which consists of an infrared transmitter and a plurality of infrared receivers mounted on the vehicle side in the area of the vehicle outer skin, which control the locking system
  • the user To unlock the locking system, the user must, as already in the aforementioned case, point the portable transmitter with the IR diode at the locking system-side receiver and actuate the transmitter.
  • the IR light emitted by the transmitter which has a characteristic wavelength, is then analyzed by the receiver and checks whether there is a coincidence between the emitted by the transmitter and the set light frequency. If this is the case, the control unit unlocks the locking device
  • the object of the invention is to develop a system of the type mentioned in the preamble of claim 1, which enables a user to access, for example, a motor vehicle in a comfortable and secure manner. This is achieved according to the invention by the measures mentioned in the characterizing part of claim 1, which have the following special meaning
  • At least one electrode is installed in the handles of the door handles and in the part of the door opposite the handle, a counter electrode is attached, which can also be the door itself Field built up, this can be used in an advantageous manner to already sense the access request of a person reaching for a door handle.
  • This is done according to the invention in that one hand reaches for one the handle on the door reaches, when you approach it already causes a change in the capacitance built up between the two electrodes.
  • the hand has the special function that it changes the dielectric between the handle-side electrode and the door-side counter electrode by changing part of the ambient air is replaced by the dielectric of the hand and thus another overall dielectric results summatively.
  • the entire process from sensing the approach of the hand to receiving the data transmitted by the data carrier and then unlocking the locking system in the event of recognition of an access authorization is also included Safety completed before the handle is actually operated
  • An electromotive which perceives the change in capacity and translates it into a command pulse, is preferably contained in the handle of the door handle to save space.
  • the command pulse generated by this electronics triggers the query of the data carrier in the electrical control unit.
  • FIG. 1 schematically shows a vehicle with an integrated locking system
  • Fig. 2 shows schematically a data carrier, which in the embodiment of a
  • FIG. 3 shows a door handle shown in perspective
  • Figure 4 shows a handle and part of a door in cross section
  • the invention is a locking system which consists of several components 13 - 37 and which is integrated in a vehicle 10 in the exemplary embodiment shown here.
  • This locking system is intended for the authorized user of the Vehicle 10 on as possible Comfortable and simple way to allow access to the vehicle 10.
  • a door handle 13 and a lock 14 are attached to two doors 12.
  • the handle 13 includes a handle 27, such as a handle or a handle flap, which contains a capacitive sensor 30-34.
  • Conductor tracks 18 run from the door handles 13 from the capacitive sensor 30-34 to an electrical control unit 16.
  • a signal from the capacitive sensor 30-34 is transmitted via these conductor tracks 18 if a hand approaches the space between Door handle 13 and the door 12 delivered to the electrical control unit 16
  • a signal triggers a data query from an operator-side data carrier 20 (FIG. 2), which the electrical control unit 16 forwards via the conductor tracks 19 to a plurality of transmitting / receiving units 15 which electromagnetically query the data at the data center shown in FIG transmit häger 20
  • the command for data output via an antenna 24 is received in the data carrier 20 and forwarded to a receiver 22 of the data carrier 20 Data carrier 20 transmitted to the transmitting / receiving units 15 in the vehicle 10
  • the data carrier 20 also contains a power supply 26 and electronics 25 which also control the functions of the data carrier 20
  • the transmitting / receiving units 15 pass on the received data to the electrical control unit 16 via the conductor tracks 19.
  • the data supplied by the data carrier 20 are compared with the identification data stored in the electrical control unit 16. which converts the handles 27 from an ineffective into an effective mode. In this effective state of the handles 27, the locksmith 14 can be opened by actuating the handle
  • a first electrode 30 of the capacitive sensor 30 - 34 in this exemplary embodiment is divided in two and is arranged symmetrically in an inner shell 28 of a handle 27.
  • the cross profiles of the two parts of the first electrode 30 have, as from that Cross section of the handle 27 in FIG. 4, an L-Pro sap.
  • the compensation electrode 33 is arranged in the middle between the two parts of the electrode 30.
  • the electronics 34 of the capacitive sensor 30-34 in this exemplary embodiment are located in the part of the handle 27 facing the locking cylinder 37 of the inner shell 28.
  • the electrodes 30, 33 and the electronics 34 are covered with an insulating layer 36 in an air-tight manner
  • Fig. 3 it can be seen that in an outer shell 29 of the handle 27 there is a key switch 35, which in this embodiment enables the locking system 13-37 to be locked by actuating the same
  • the conductor track 18 is guided along the outer shell 29. Furthermore, the approximate propagation of an electric field 32 between the first electrode 30 and a second electrode 31, which corresponds to the door 12 of the vehicle 10 in this embodiment, is shown in FIG. 4
  • the door 12 can also be opened by means of the locking cylinder 37 with a key provided for such cases
  • the embodiment shown here represents only an exemplary implementation of the invention. However, this is not limited to this.
  • the pushbutton switch could be replaced by a second sensor, which is additionally arranged in the outer shell of the handle 27 and which senses a person's wish to secure the vehicle by moving his hand past the side of the handle 27 facing away from the vehicle 10.
  • the electrodes are likewise not restricted to a specific shape, but rather can have any shape that is possible for the respective electrode.
  • the number of sensors is likewise not restricted to a specific number Reference list

Landscapes

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

Abstract

In a locking system, as for instance used on a vehicle, a switch or sensor, initiates the interrogation of a data storage medium via a control unit to check for access authorisation. If access authorisation is given the control unit releases the locks of the locking system automatically. To improve user convenience regarding the system release, the invention proposes to integrate at least one capacitive sensor in at least one door handle. For this purpose at least one first electrode is situated in the inner shell of the door handle and a second electrode is placed in the area of a door opposite the handle. By applying an antipole voltage to both electrodes an electrical field is generated between the two. The approach of a hand, which in the invention acts as a dielectric, causes a change in the cumulative dielectric state between the two electrodes. Such a change is recognised by the capacitive sensor and transformed into an electric pulse which initiates in the electrical control unit interrogation of the data storage medium. The data storage medium then sends its data to the on-board electrical control unit which compares the data received with the data stored and releases the locks on the doors of the vehicle if the data match.

Description

Schließsystem, insbesondere für Kraftfahrzeuge Locking system, in particular for motor vehicles
Die Erfindung richtet sich auf ein Schließsystem der im Oberbegriff des Anspruches 1 genannten Art Bei einem solchen Schließsystem wird eine Zutrittsberechtigung mittels einer elektromagnetischen Datenabfrage geprüft Das Anwendungsgebiet der Erfindung richtet sich insbesondere auf Kraftfahrzeuge, Zugänge zu Sicherheitszonen etc .The invention relates to a locking system of the type mentioned in the preamble of claim 1. In such a locking system, access authorization is checked by means of an electromagnetic data query. The field of application of the invention is particularly directed to motor vehicles, access to security zones, etc.
Bei Schließsystemen der oben genannten Art ist es bekannt, einer Person Zutritt zu z.B einem Fahrzeug über eine Datenabfrage eines Datenträgers, z.B einerIn locking systems of the type mentioned above, it is known for a person to have access to, for example, a vehicle via a data query from a data carrier, for example one
Scheckkarte, zu ermöglichen. Die Datenabfrage wird hierbei durch einen amCheck card, to enable. The data query is carried out by an am
Fahrzeug angebrachten mechanischen Schalter oder einem Sensor, z.B einerVehicle-mounted mechanical switch or a sensor, e.g. one
Lichtschranke, ausgelöst, welche an einem Türgriff oder zumindest im Bereich einesLight barrier, triggered, which on a door handle or at least in the area of a
Türgriffs installiert sind. Die Zutritt begehrende Person lost die Datenabfrage desDoor handle are installed. The person requesting access triggers the data query of the
Datenträgers durch eine Steuereinheit, z.B. in einem Fahrzeug, durch ein Betatigen des Schalters, genauer gesagt durch ein Bewegen des Türgriffs, oder mittels desData carrier by a control unit, e.g. in a vehicle, by actuating the switch, more precisely by moving the door handle, or by means of the
Durchfahrens einer Lichtschranke mit einer Hand aus. Der ausgelöste Impuls wird hierbei von der Steuereinheit an einen Sender weitergegeben, der die Datenabfrage an den Datenträger übermittelt. Der Datenträger empfangt den Befehl zur Datenabfrage und gibt diesen weiter an eine Dateneinheit, die die geforderten Daten an einenDriving through a light barrier with one hand. The triggered pulse is passed on from the control unit to a transmitter, which transmits the data query to the data carrier. The data carrier receives the command to query the data and passes it on to a data unit, which sends the requested data to one
Sender weiterleitet. Der Sender übermittelt die Daten dann wieder über die fahrzeugseitige Sende/Empfangseinheit an die Steuereinheit im Fahrzeug, die im Falle einer positiven Datenerkennung einen Befehl zur Entsicherung des Schließ Systems ausgibtSender forwards. The transmitter then transmits the data again via the vehicle-side transmission / reception unit to the control unit in the vehicle, which issues a command to unlock the locking system in the event of positive data recognition
Die Datenabfrage geschieht also erst bei einem ersten Betätigen einer Handhabe wie einem Griffbügel oder einer Griffklappe eines Türgriffs und somit zu einem verhältnismäßig spaten Zeitpunkt, da ihr, wie aus der obigen Beschreibung zu entnehmen ist, noch einige Schritte nachfolgen Diese verzögerte Datenabfrage, sowie die sich anschließende Reaktionsszeit einer Zentralverπegelung machen ein solches System unkomfortabel In manchen Fallen hat dies zur Folge, daß das Schließsystem bei der ersten Betätigung des Türgriffs noch nicht entsichert ist und die den Zutritt begehrende Person erneut den Türgriff erneut betätigen muß, um eine Türe zu offnenThe data query therefore only occurs when a handle such as a handle or a flap of a door handle is actuated for the first time, and thus at a relatively late point in time, since, as described in the description above can be seen, follow a few steps. This delayed data query, as well as the subsequent reaction time of a central locking make such a system uncomfortable. In some cases, this means that the locking system is not yet unlocked when the door handle is operated for the first time and the person requesting access must press the door handle again to open a door
Aus der DE 44 35 894 AI ist ein Sicherungssystem zur Sicherung eines Kraftfahrzeugs bekannt, bei dem die Datenabfrage eines Transponders induktiv durch eine am Fahrzeug, in der Nahe eines Türgriffs angeordnete Induktionsspule ausgelost wird Die Zutritt begehrende Person lost die Datenabfrage des Transponders dadurch aus, daß sie sich dem Fahrzeug mit der Induktionsspule nähert, und der Transponder dadurch angesprochen wird Der Transponder sendet sodann die in ihm gespeicherten Daten, den Identifikationscode an eine Steuereinheit, die die Zugangsberechtigung überprüft. Die Steuereinheit gibt dann im Falle einer positiven Datenerkennung den Befehl zur Entsicherung des SchließsystemsFrom DE 44 35 894 AI a security system for securing a motor vehicle is known in which the data query of a transponder is triggered inductively by an induction coil arranged on the vehicle near a door handle. The person requesting access triggers the data query of the transponder in that it approaches the vehicle with the induction coil, and the transponder is thereby addressed. The transponder then sends the data stored in it, the identification code, to a control unit which checks the access authorization. In the event of positive data recognition, the control unit then issues the command to unlock the locking system
Bei der vorgenannten Vorrichtung ist es von Nachteil, daß ein unbeabsichtigtes Entsichern des Schließsytems erfolgen kann, wenn sich der Benutzer unbeabsichtigt und zufallig nach dem Schließvorgang nochmals seinem Fahrzeug etc nähert, welches über die beschriebene Sicherheitseinrichtung gesichert istIn the above-mentioned device, it is disadvantageous that the locking system can be inadvertently unlocked if the user inadvertently and accidentally approaches his vehicle, which is secured by the described safety device, after the closing process
Aus der DE AS 15 66 733 ist eine Anordnung zum Entriegeln und zur Überwachung eines Schließsystems bekannt Bei dieser Anordnung besteht der Datenträger aus einer Lumineszensdiode, die an einem portablen Sender angebracht ist An der türseitigen Schließeinrichtung befindet sich ein Empfanger, der mit einer Steuerelektronik gekoppelt ist, der ein eingehendes Signal vom portablen Sender auswertet Zur Entsicherung des Schließsystems muß der Benutzer hierbei den portablen Sender mit der Lumineszenzdiode auf den schließeinrichtungsseitigen Empfanger richten und den Sender betätigen Das vom Sender ausgesandte Lichtsignal, welches eine charakteristische Wellenlange aufweist, wird sodann vom Empfanger empfangen und an die Steuereinheit übermittelt, die überprüft, ob eine Koinzidenz der vom Sender ausgesandten mit der eingestellten Lichtfrequenz vorliegt Ist dies der Fall, dann entsichert die Steuereinheit die Schließeinrichtung Hierbei ist es von Nachteil, dass der Benutzer noch selbst umständlich tatig werden muß, indem er den Sender gezielt auf den schließeinrichtungsseitigen Empfanger richten muß, was das System unkomfortabel machtAn arrangement for unlocking and monitoring a locking system is known from DE AS 15 66 733. In this arrangement, the data carrier consists of a luminescent diode which is attached to a portable transmitter. A receiver is located on the door-side locking device and is coupled to control electronics , which evaluates an incoming signal from the portable transmitter To unlock the locking system, the user must point the portable transmitter with the LED at the locking device-side receiver and operate the transmitter.The light signal emitted by the transmitter, which has a characteristic wavelength, is then received by the receiver and transmitted to the control unit, which checks whether there is a coincidence between the emitted by the transmitter and the set light frequency. If this is the case, the control unit releases the locking device It is disadvantageous here that the user still has to be cumbersome to act by specifically directing the transmitter towards the receiver on the locking device side, which makes the system uncomfortable
Aus der DE 36 21 592 Cl ist eine Schließanlage bekannt, die aus einem Infrarot Sender sowie aus mehreren fahrzeugseitig im Bereich der Fahrzeugaussenhaut angebrachten Infrarot Empfangern besteht, die die Schließanlage steuernA locking system is known from DE 36 21 592 Cl, which consists of an infrared transmitter and a plurality of infrared receivers mounted on the vehicle side in the area of the vehicle outer skin, which control the locking system
Zur Entsicherung der Schließanlage muß der Benutzer hierbei, wie bereits im vorgenannten Fall, den portablen Sender mit der IRdiode auf den schließanlagenseitigen Empfanger richten und den Sender betätigen Das vom Sender ausgesandte IR-Licht, welches eine charakteristische Wellenlange aufweist, wird sodann vom Empfanger analysiert und überprüft, ob eine Koinzidenz der vom Sender ausgesandten mit der eingestellten Lichtfrequenz vorliegt. Ist dies der Fall, dann entsichert die Steuereinheit die SchließeinrichtungTo unlock the locking system, the user must, as already in the aforementioned case, point the portable transmitter with the IR diode at the locking system-side receiver and actuate the transmitter.The IR light emitted by the transmitter, which has a characteristic wavelength, is then analyzed by the receiver and checks whether there is a coincidence between the emitted by the transmitter and the set light frequency. If this is the case, the control unit unlocks the locking device
Hierbei besteht ebenfalls der Nachteil, dass der Benutzer noch selbst umständlich tatig werden muß, indem er den Sender gezielt auf den schließeinrichtungsseitigen Empfanger richten muß, was das System unkomfortabel machtHere, too, there is the disadvantage that the user still has to be cumbersome to act by specifically pointing the transmitter at the receiver on the locking device side, which makes the system uncomfortable
Aus der DE 34 40 442 AI ist weiterhin ein Einbaudrucktaster für Fahrzeugturen bekannt, der zwei Tastelemente aufweist, über die ein Mikroschalter betatigbar istFrom DE 34 40 442 AI a built-in push button for vehicle doors is also known, which has two sensing elements, via which a microswitch can be actuated
Aufgabe der Erfindung ist es, ein System der im Oberbegriff des Anspruches 1 genannten Art zu entwickeln, das einem Benutzer auf komfortable und sichere Weise Zutritt zu z B. einem Kraftfahrzeug ermöglicht. Dies wird erfindungsgemäß durch die im kennzeichnenden Teil des Anspruches 1 genannten Maßnahmen erreicht, denen folgende besondere Bedeutung zukommtThe object of the invention is to develop a system of the type mentioned in the preamble of claim 1, which enables a user to access, for example, a motor vehicle in a comfortable and secure manner. This is achieved according to the invention by the measures mentioned in the characterizing part of claim 1, which have the following special meaning
Die Besonderheit der dort beschriebenen Maßnahmen liegt darin, daß in den Handhaben der Türgriffe wenigstens je eine Elektrode installiert ist und in dem der Handhabe gegenüber liegenden Teil der Türe eine Gegenelektrode angebracht ist, welche auch die Türe an sich sein kann Wird zwischen beiden Elektroden ein elektrisches Feld aufgebaut, so kann dieses in vorteilhafter Weise dazu benutzt werden, bereits den Zutrittswunsch einer nach einem Türgriff greifenden Person zu sensieren Dieses geschieht erfindungsgemäß dadurch, daß eine Hand die nach einem der an den Türen befindlichen Handhaben langt, bei Ihrer Annäherung bereits eine Änderung der zwischen den beiden Elektroden aufgebauten Kapazität herbeiführt Der Hand kommt dabei die besondere Funktion zu, daß sie das Dielektrikum zwischen der handhabenseitigen Elektrode und der turseitigen Gegenelektrode verändert, indem ein Teil der Umgebungsluft durch das Dielektrikum der Hand ersetzt wird und sich somit summativ ein anderes Gesamt-Dielektrikum ergibt Vorteilhafterweise ist der gesamte Vorgang von der Sensierung der Annäherung der Hand bis hin zum Empfang der vom Datenträger übermittelten Daten und dem darauffolgenden Entsichern des Schließsystems im Erkennungsfall einer Zugangsberechtigung, mit Sicherheit noch vor einer tatsachlichen Betätigung der Handhabe abgeschlossenThe peculiarity of the measures described there is that at least one electrode is installed in the handles of the door handles and in the part of the door opposite the handle, a counter electrode is attached, which can also be the door itself Field built up, this can be used in an advantageous manner to already sense the access request of a person reaching for a door handle. This is done according to the invention in that one hand reaches for one the handle on the door reaches, when you approach it already causes a change in the capacitance built up between the two electrodes. The hand has the special function that it changes the dielectric between the handle-side electrode and the door-side counter electrode by changing part of the ambient air is replaced by the dielectric of the hand and thus another overall dielectric results summatively. Advantageously, the entire process from sensing the approach of the hand to receiving the data transmitted by the data carrier and then unlocking the locking system in the event of recognition of an access authorization is also included Safety completed before the handle is actually operated
Eine Elektromk, die die Veränderung der Kapazität wahrnimmt und in einen Befehlsimpuls übersetzt, ist vorzugsweise platzsparend in der Handhabe des Türgriffs enthalten. Der von dieser Elektronik erzeugte Befehlsimpuls löst in der elektrischen Steuereinheit die Abfrage des Datenträgers aus.An electromotive, which perceives the change in capacity and translates it into a command pulse, is preferably contained in the handle of the door handle to save space. The command pulse generated by this electronics triggers the query of the data carrier in the electrical control unit.
Von Nutzen ist es auch, wenn eine weitere Elektrode zum Einsatz gelangt, die die Aufgabe hat, dem System Daten für eine Kompensation von Kapazitätsunterschieden aufgrund von wechselnden äußeren Rahmenbedingungen, wie z B. durch wechselnde Witterungsverhältnisse, zu liefernIt is also useful if an additional electrode is used, which has the task of supplying the system with data for compensating for differences in capacitance due to changing external conditions, such as changing weather conditions
Weitere Maßnahmen und Vorteile der Erfindung ergeben sich aus den Unteranspruchen, der nachfolgenden Beschreibung und den Zeichnungen. In den Zeichnungen ist die Erfindung in einem Ausführungsbeispiel dargestellt. Es zeigenFurther measures and advantages of the invention result from the subclaims, the following description and the drawings. In the drawings, the invention is shown in one embodiment. Show it
Fig 1 schematisch ein Fahrzeug mit einem integriertem Schließsystem,1 schematically shows a vehicle with an integrated locking system,
Fig 2 schematisch einen Datenträger, der hier in der Ausfuhrungsform einerFig. 2 shows schematically a data carrier, which in the embodiment of a
Scheckkarte dargestellt ist, Fig 3 einen perspektivisch dargestellten Türgriff, Fig 4 eine Handhabe und einen Teil einer Tur im QuerschnittCheck card is shown, Figure 3 shows a door handle shown in perspective, Figure 4 shows a handle and part of a door in cross section
Wie aus Fig 1 bis Fig 4 zu entnehmen ist, handelt es sich bei der Erfindung um ein Schließsytem, das aus mehreren Komponenten 13 - 37 besteht, und das in dem hier dargestellten Ausführungsbeispiel in ein Fahrzeug 10 integriert ist Dieses Schließsystem soll dem berechtigten Benutzer des Fahrzeugs 10 auf möglichst komfortable und einfache Weise den Zutritt zum Fahrzeug 10 ermöglichen Aus Fig 1 ist zu entnehmen, daß in diesem Ausführungsbeispiel an zwei Türen 12 je ein Türgriff 13 und ein Schloß 14 angebracht sind Zum Türgriff 13 gehört eine Handhabe 27, wie ein Griffbugel oder eine Griffklappe, die einen kapazitiven Sensor 30 - 34 enthalt Von den Türgriffen 13 aus laufen Leiterbahnen 18 vom kapazitiven Sensor 30 - 34 zu einer elektrischen Steuereinheit 16 Über diese Leiterbahnen 18 wird em Signal vom kapazitiven Sensor 30 - 34 im Falle der Annäherung einer Hand an den Zwischenraum zwischen Türgriff 13 und der Türe 12 an die elektrische Steuereinheit 16 abgegeben In der elektrischen Steuereinheit 16 lost ein solches Signal eine Datenabfrage eines bedienerseitigen Datenträgers 20 (Fig 2) aus, die die elektrische Steuereinheit 16 über die Leiterbahnen 19 an mehrere Sende- /Empfangseinheiten 15 weitergibt, welche die Datenabfrage elektromagnetisch an den in Fig 2 dargestellten Datenträger 20 übermittelnAs can be seen from FIGS. 1 to 4, the invention is a locking system which consists of several components 13 - 37 and which is integrated in a vehicle 10 in the exemplary embodiment shown here. This locking system is intended for the authorized user of the Vehicle 10 on as possible Comfortable and simple way to allow access to the vehicle 10. It can be seen from FIG. 1 that in this exemplary embodiment a door handle 13 and a lock 14 are attached to two doors 12. The handle 13 includes a handle 27, such as a handle or a handle flap, which contains a capacitive sensor 30-34. Conductor tracks 18 run from the door handles 13 from the capacitive sensor 30-34 to an electrical control unit 16. A signal from the capacitive sensor 30-34 is transmitted via these conductor tracks 18 if a hand approaches the space between Door handle 13 and the door 12 delivered to the electrical control unit 16 In the electrical control unit 16, such a signal triggers a data query from an operator-side data carrier 20 (FIG. 2), which the electrical control unit 16 forwards via the conductor tracks 19 to a plurality of transmitting / receiving units 15 which electromagnetically query the data at the data center shown in FIG transmit häger 20
Im Datenträger 20 wird das Kommando zur Datenausgabe über eine Antenne 24 aufgefangen und an einen Empfänger 22 des Datenträgers 20 weitergeleitet Der Empfanger 22 gibt das Signal an die Dateneinheit 23 des Datenträgers 20 weiter, der die abgerufenen Daten über einen Sender 21 und die Antenne 24 des Datenträgers 20 an die SendeJEmpfangseinheiten 15 im Fahrzeug 10 übermittelt Im Datenträger 20 befinden sich neben den oben genannten Einheiten in diesem Ausführungsbeispiel auch noch eine Stromversorgung 26 sowie eine Elektronik 25, die die Funktionen des Datenträgers 20 mit steuertThe command for data output via an antenna 24 is received in the data carrier 20 and forwarded to a receiver 22 of the data carrier 20 Data carrier 20 transmitted to the transmitting / receiving units 15 in the vehicle 10 In addition to the above-mentioned units in this exemplary embodiment, the data carrier 20 also contains a power supply 26 and electronics 25 which also control the functions of the data carrier 20
Die Sende-/Empfangseinheiten 15 geben die empfangenen Daten über die Leiterbahnen 19 an die elektrische Steuereinheit 16 weiter. In der elektrischen Steuereinheit 16 werden die vom Datenträger 20 gelieferten Daten mit den in der elektrischen Steuereinheit 16 gespeicherten Kennungsdaten verglichen Im positiven Datenerkennungsfall (Anerkennung der Zutrittsberechtigung) gibt die elektrische Steuereinheit 16 mittels der Leiterbahnen 17 ein Signal zur Entsicherung der Schlosser 14 an diese weiter, welches die Handhaben 27 von einem unwirksamen in einen wirksamen Modus überfuhrt In diesem wirksamen Zustand der Handhaben 27 ist eine Öffnung der Schlosser 14 durch Betätigung der Handhabe möglichThe transmitting / receiving units 15 pass on the received data to the electrical control unit 16 via the conductor tracks 19. In the electrical control unit 16, the data supplied by the data carrier 20 are compared with the identification data stored in the electrical control unit 16. which converts the handles 27 from an ineffective into an effective mode. In this effective state of the handles 27, the locksmith 14 can be opened by actuating the handle
Die Stromversorgung des Schließsystems, der elektrischen Steuereinheit 16 und der anderen wirksamen elektrischen Bauteile wird bei diesem Ausfuhrungsbeispiel von der Autobatterie 1 1 übernommen Wie aus Fig 3 und Fig 4 zu entnehmen ist, ist eine erste Elektrode 30 des kapazitiven Sensors 30 - 34 in diesem Ausführungsbeispiel zweigeteilt und symmetrisch in einer Innenschale 28 einer Handhabe 27 angeordnet Die Querprofile der beiden Teile der ersten Elektrode 30 haben, wie aus dem Querschnitt der Handhabe 27 in Fig 4 ersichtlich, ein L-Profü Mittig zwischen den beiden Teilen der Elektrode 30 ist die Kompensationselektrode 33 angeordnet In dem dem Schließzylinder 37 zugewandten Teil der Handhabe 27 ist die Elektronik 34 des kapazitiven Sensors 30-34 in diesem Ausführungsbeispiel auf der Innenschale 28 angebracht Die Elektroden 30, 33 und die Elektronik 34 sind luftabschlussig mit einer Isolierschicht 36 überzogenThe power supply of the locking system, the electrical control unit 16 and the other effective electrical components is taken over by the car battery 1 1 in this exemplary embodiment As can be seen from FIGS. 3 and 4, a first electrode 30 of the capacitive sensor 30 - 34 in this exemplary embodiment is divided in two and is arranged symmetrically in an inner shell 28 of a handle 27. The cross profiles of the two parts of the first electrode 30 have, as from that Cross section of the handle 27 in FIG. 4, an L-Profü. The compensation electrode 33 is arranged in the middle between the two parts of the electrode 30. The electronics 34 of the capacitive sensor 30-34 in this exemplary embodiment are located in the part of the handle 27 facing the locking cylinder 37 of the inner shell 28. The electrodes 30, 33 and the electronics 34 are covered with an insulating layer 36 in an air-tight manner
Aus Fig 3 ist zu ersehen, daß sich in einer Außenschale 29 der Handhabe 27 ein Tastschalter 35 befindet, der in dieser Ausführungsform ein Verriegeln des Schließsystems 13 - 37 durch ein Betatigen desselben ermöglichtFrom Fig. 3 it can be seen that in an outer shell 29 of the handle 27 there is a key switch 35, which in this embodiment enables the locking system 13-37 to be locked by actuating the same
Wie aus Fig. 4 ersichtlich, wird in dieser Ausführungsform entlang der Außenschale 29 die Leiterbahn 18 geführt. Desweiteren ist in der Fig 4 die ungefähre Ausbreitung eines elektrischen Feldes 32 zwischen der ersten Elektrode 30 und einer zweiten Elektrode 31, die in dieser Ausführungsform der Tur 12 des Fahrzeugs 10 entspricht, dargestelltAs can be seen from FIG. 4, in this embodiment the conductor track 18 is guided along the outer shell 29. Furthermore, the approximate propagation of an electric field 32 between the first electrode 30 and a second electrode 31, which corresponds to the door 12 of the vehicle 10 in this embodiment, is shown in FIG. 4
Im Falle eines Stromausfalls kann die Türe 12 auch mittels des Schließzylinders 37 mit einem für solche Fälle vorgesehenen Schlüssel geöffnet werdenIn the event of a power failure, the door 12 can also be opened by means of the locking cylinder 37 with a key provided for such cases
Es bleibt nun noch zu bemerken, dass die hier dargestellte Ausführungsform nur eine beispielhafte Verwirklichung der Erfindung darstellt. Diese ist jedoch nicht darauf beschrankt. Es könnte so z.B. der Tastschalter durch einen zweiten, zusätzlich in der Außenschale der Handhabe 27 angebrachten Sensor ersetzt werden, der den Wunsch einer Person nach einem Sichern des Fahrzeugs durch Vorbeistreichen der Hand vor der dem Fahrzeug 10 abgewandten Seite der Handhabe 27 sensiert Die Elektroden sind ebenfalls nicht auf eine bestimmte Form beschrankt, sie können vielmehr jede Form aufweisen, die für die jeweilige Elektrode möglich ist Die Anzahl der Sensoren ist gleichfalls nicht auf eine bestimmte Anzahl beschrankt BezugszeichenlisteIt remains to be noted that the embodiment shown here represents only an exemplary implementation of the invention. However, this is not limited to this. For example, the pushbutton switch could be replaced by a second sensor, which is additionally arranged in the outer shell of the handle 27 and which senses a person's wish to secure the vehicle by moving his hand past the side of the handle 27 facing away from the vehicle 10. The electrodes are likewise not restricted to a specific shape, but rather can have any shape that is possible for the respective electrode. The number of sensors is likewise not restricted to a specific number Reference list
Fahrzeug Autobatterie Tür Türgriff Schloß Sende-/Empfangseinheit elektrische Steuereinheit Leiterbahn (elektrische Steuereinheit - Schließzylinder) Leiterbahn (elektrische Steuereinheit - kapazitiver Sensor) Leiterbahn (elektrische Steuereinheit - Sende-/Empfangseinheit) Datenträger Sender (des Datenträgers) Empfanger (des Datenträgers) Dateneinheit (des Datenträgers) Antenne (des Datenträgers) Elektronik (des Datenträgers) Stromversorgung (des Datenträgers) Handhabe Innenschale (der Handhabe) Außenschale (der Handhabe) erste Elektrode zweite Elektrode elektrisches Feld Kompensationselektrode Elektronik (des kapazitiven Sensors) Tastschalter Isolierschicht Schließzylinder Vehicle car battery door door handle lock transmitter / receiver unit electrical control unit conductor track (electrical control unit - lock cylinder) conductor track (electrical control unit - capacitive sensor) conductor track (electrical control unit - transmitter / receiver unit) data carrier sender (of the data carrier) receiver (of the data carrier) data unit (of the Data carrier) antenna (data carrier) electronics (data carrier) power supply (data carrier) handle inner shell (handle) outer shell (handle) first electrode second electrode electrical field compensation electrode electronics (capacitive sensor) pushbutton switch insulating layer lock cylinder

Claims

Patentansprüche claims
Schließsystem, insbesondere bei Kfz, fahrzeugseitig bestehend aus einem über eine Handhabe (27) zu betätigendem Schloß (14) an wenigstens einer Tur (12), Klappe od dgl ,Locking system, in particular for motor vehicles, on the vehicle side consisting of a lock (14) to be actuated via a handle (27) on at least one door (12), flap or the like,
wobei das Schloß (14) zwischen zwei Stellungen umstellbar ist, namlich einer die Handhabe (27) unwirksam setzenden gesicherten Stellungthe lock (14) being switchable between two positions, namely a secured position which ineffectively sets the handle (27)
und einer die Handhabe (27) wirksam setzenden Stellung, bei der das Schloß (14) über eine Betätigung der Handhabe (27) zu offnen ist ,and a position effectively setting the handle (27), in which the lock (14) can be opened by actuating the handle (27),
und bei dem ein im Bereich der Handhabe (27) befindlicher Sensor (30 - 34), der mit einer elektrischen Steuereinheit (16) verbunden ist, die Datenabfrage eines bedienerseitigen Datenträgers (20) durch die elektrische Steuereinheit ( 16) auslöst,and in which a sensor (30 - 34) located in the area of the handle (27), which is connected to an electrical control unit (16), triggers the data query of an operator-side data carrier (20) by the electrical control unit (16),
wobei die elektrische Steuereinheit (16) mit einer Sende/ Empfangseinheit (15) verbunden ist und über diese die Datenanfrage an den bedienerseitigen Datenträger (20) übermittelt,wherein the electrical control unit (16) is connected to a transmitting / receiving unit (15) and transmits the data request to the operator-side data carrier (20),
und der Datenträger (20) seinerseits seine Daten aus einer Dateneinheit (23) über einen Sender (21) an die fahrzeugseitige Sende/Empfangseinheit (15) übermittelt,and the data carrier (20) in turn transmits its data from a data unit (23) via a transmitter (21) to the vehicle-side transmission / reception unit (15),
und die Sende/Empfangseinheit (15) die Daten an die elektrischen Steuereinheit (16) weiterleitet, und die elektrische Steuereinheit (16) im positiven Datenidentifizierungsfall ein Entsichern des/der Schlosser an wenigstens einer Tur (12), einer Klappe od dgl des Fahrzeugs (10) veranlaßt,and the transmitting / receiving unit (15) forwards the data to the electrical control unit (16), and in the event of positive data identification, the electrical control unit (16) causes the locksmith (s) to unlock the at least one door (12), a flap or the like of the vehicle (10),
d a d u r c h g e k e n n z e i c h n e t ,characterized ,
daß der Sensor (30-34) als kapazitiver Sensor ausgebildet ist, daß mindestens eine erste Elektrode (30) des kapazitiven Sensors (30 - 34) in der Handhabe (27) integriert ist und eine zweite Elektrode (31) des kapazitiven Sensors (30 - 34) im Bereich der Handhabe (27) turseitig als Bestandteil der Turblechkonstruktion angeordnet ist, so daß zwischen den Elektroden ein elektrisches Feld (32) aufgebaut ist und daß die Kapazität zwischen den beiden Elektroden (30, 31) vom Dielektrikum einer in den Bereich des elektrischen Feldes (32) gelangenden menschlichen Hand veränderbar und damit sensierbar istthat the sensor (30-34) is designed as a capacitive sensor, that at least a first electrode (30) of the capacitive sensor (30 - 34) is integrated in the handle (27) and a second electrode (31) of the capacitive sensor (30 - 34) in the area of the handle (27) is arranged on the door side as part of the door panel construction, so that an electric field (32) is built up between the electrodes and that the capacitance between the two electrodes (30, 31) from the dielectric one into the area of the electric field (32) reaching human hand is changeable and therefore sensible
Schließsystem nach Anspruch 1, dadurch gekennzeichnet, daß die Elektronik (34) des kapazitiven Sensors (30 - 34) in der Handhabe (27) integriert istLocking system according to claim 1, characterized in that the electronics (34) of the capacitive sensor (30 - 34) are integrated in the handle (27)
Schließsystem nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, daß die Handhabe (27) eine weitere Elektrode aufweist, die als Kompensationselektrode (33) fungiertLocking system according to one of claims 1 to 2, characterized in that the handle (27) has a further electrode which functions as a compensation electrode (33)
Schließsystem nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die erste Elektrode (30) in zwei Elektrodenteile gegliedert istLocking system according to one of claims 1 to 3, characterized in that the first electrode (30) is divided into two electrode parts
Schließsystem nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die erste Elektrode (30) symmetrisch in einer Innenschale (28) der Handhabe (27) angeordnet istLocking system according to one of claims 1 to 4, characterized in that the first electrode (30) is arranged symmetrically in an inner shell (28) of the handle (27)
Schließsystem nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die beiden Elektrodenteile der ersten Elektrode (30) in den Langsrandbereichen der Innenschale (28) der Handhabe (27) angeordnet sind Locking system according to one of claims 1 to 5, characterized in that the two electrode parts of the first electrode (30) are arranged in the longitudinal edge regions of the inner shell (28) of the handle (27)
7 Schließsystem nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Kompensationselektrode (33) zwischen den beiden Elektrodenteilen der ersten Elektrode (30) angebracht ist.7 locking system according to one of claims 1 to 6, characterized in that the compensation electrode (33) is attached between the two electrode parts of the first electrode (30).
8. Schließsystem nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß ein zusätzlicher Sensor zum Sichern des Schließsystems in der Handhabe (27) eingebaut ist.8. Locking system according to one of claims 1 to 7, characterized in that an additional sensor for securing the locking system in the handle (27) is installed.
9 Schließsystem nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß dem zusätzlichen Sensor wenigstens eine zusätzliche Elektrode in der Handhabe (27) zugeordnet ist.9 locking system according to one of claims 1 to 8, characterized in that the additional sensor is assigned at least one additional electrode in the handle (27).
10. Schließsystem nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß das Sichern des Schließsystems über einen mechanischen Tastschalter (35) ausgelöst wird. 10. Locking system according to one of claims 1 to 9, characterized in that the locking of the locking system is triggered by a mechanical key switch (35).
EP97918137A 1996-04-27 1997-04-16 Locking system for motor vehicles Expired - Lifetime EP0895559B1 (en)

Applications Claiming Priority (3)

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DE19617038A DE19617038C2 (en) 1996-04-27 1996-04-27 Locking system, in particular for motor vehicles
DE19617038 1996-04-27
PCT/EP1997/001890 WO1997041322A1 (en) 1996-04-27 1997-04-16 Locking system, particularly for motor vehicles

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EP0895559A1 true EP0895559A1 (en) 1999-02-10
EP0895559B1 EP0895559B1 (en) 2002-01-16

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EP (1) EP0895559B1 (en)
JP (1) JP2000509121A (en)
KR (1) KR100406329B1 (en)
CN (1) CN1119488C (en)
AU (1) AU731480B2 (en)
BR (1) BR9708868A (en)
DE (2) DE19617038C2 (en)
ES (1) ES2166535T3 (en)
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