EP0826857B1 - Device for controlling a plurality of actuators in a central locking system - Google Patents

Device for controlling a plurality of actuators in a central locking system Download PDF

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Publication number
EP0826857B1
EP0826857B1 EP97111805A EP97111805A EP0826857B1 EP 0826857 B1 EP0826857 B1 EP 0826857B1 EP 97111805 A EP97111805 A EP 97111805A EP 97111805 A EP97111805 A EP 97111805A EP 0826857 B1 EP0826857 B1 EP 0826857B1
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EP
European Patent Office
Prior art keywords
signal
locking device
central locking
wire connection
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.)
Expired - Lifetime
Application number
EP97111805A
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German (de)
French (fr)
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EP0826857A1 (en
Inventor
Jörg Havemann
Andreas Hümpel
Michael Dipl.-Ing. Kastner
Dieter Klenke
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Volkswagen AG
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Volkswagen AG
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Publication of EP0826857A1 publication Critical patent/EP0826857A1/en
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B77/00—Vehicle locks characterised by special functions or purposes
    • E05B77/46—Locking several wings simultaneously
    • E05B77/48—Locking several wings simultaneously by electrical means

Definitions

  • the invention relates to a central locking device for motor vehicles with a number of in doors and / or actuators arranged in flaps and a device for controlling the Actuators in which each of the actuators has at least one control element and at least one a signal generator are assigned.
  • the output signal of the signal generator gives one State of the control element again.
  • the control elements are controlled by a control unit Dependency of at least the output signal of a signal generator of one of the actuators controlled.
  • a central locking unit is known from the document EP 0 446 574 A2, which has a security part in addition to a central locking part. This is about one Control input only controlled when a locking switch and a Unlocking switches are operated simultaneously. A corresponding signal becomes Switching on or activating the mechanical safety device or one Control block used. Again, through a targeted Unlocking potential has been unlocked and the vehicle can be opened in a relatively simple manner.
  • the object of the invention is to provide a device for controlling a number of doors and / or flaps arranged actuators of a central locking device create the security of the central locking unit against unauthorized persons Actuation is increased.
  • a second can be used in addition to the usual signal line
  • Wire connection can be designed as a reference line.
  • This reference line can be a Establish a connection to activate an immobilizer and / or alarm system or be connected to a redundant connection of the control unit. A Cutting the reference line, possibly together with the signal line, then leads to Alarm signal, possibly to a blocking of the control element or prevents moving away of the vehicle.
  • a wire connection is used signal inverse to the output signal of a signal generator on the other wire connection transfer.
  • the inversion is here by an active component, preferably in the area of the signal generator, with which preferably also generates a periodic signal becomes.
  • the control unit is set to process such signals. For a potential A burglar is the generation and application of such signals to severed lines usually not possible.
  • a coded Signal is transmitted as the output signal of a signal generator, the coding vehicle and / or door-specific.
  • Voltage coding is simple and practical feasible using a resistance ratio of resistors in the wire connections and / or can take place via diodes assigned to a signal transmitter.
  • For a high Security is different on the two or multi-wire connections transmit coded signals.
  • Such coding is from a potential burglar difficult to see through and usually not comprehensible, especially not if there are different codes in every vehicle and on every door are used.
  • a self-learning control device is preferred used, which learns the coding used in normal operation and with others, supplied code signals blocked and / or an alarm system and / or an immobilizer controls.
  • the multi-wire, in particular two-wire connection according to the invention is also one Central locking device can be used in which each actuator has a decentralized control unit is assigned and the decentralized control units are connected to a central control unit are.
  • the security against burglary is ensured by a connection according to the invention between signal generators and assigned decentralized control units increased. Likewise such a connection between the decentralized control units and the central control unit possible.
  • diodes for decoupling which may be used for coding in a further use.
  • the central locking device for a motor vehicle shown in FIG. 1 includes the Central locking control of the doors VL, VR, HL and HR.
  • the Locking function of a tailgate can be included.
  • Each of the doors VL, VR, HL and HR is equipped with an actuator 1 to 4 designed as a door lock, each of the Actuators 1 to 4, depending on the use in the motor vehicle, a different number of Signal generators 5 to 8.
  • the signal generators 5a and 7a each send a status signal "System opening" and the signal generators 5b and 7b "System closing".
  • More signal heads 5c, 5d, 6c, 6d, 7c, 7d and 8c, 8d indicate the state of the respective door and the Signal generators 5e, 6e, 7e and 8e send a signal which indicates whether the anti-theft device is activated is.
  • the doors HL and HR do not have any door locks 3 and which can be activated by the user 4 on. For this reason, the signaling devices intended for this are missing here. All signal heads are designed as Hall sensors or microswitches.
  • the output signals of the signal generators 5 to 8 are fed to the central control device 9, which from the output signals, the control signals S1 to S8 to control the Motors M1 to M4 determined.
  • the output signals 5a, 5b and 7a, 7b are active Signals, i.e. depending on their change, the control signals S1 to S8 are formed primary.
  • the output signals of the remaining signal generators are only used as status signals considered. A change in these status signals does not trigger the motors M1 to M4.
  • the signal transmitters 5a and 7a are each in order to prevent burglary a two-wire connection via electrical lines 51, 52 and 71, 72 to the central one Control unit 9 connected.
  • the signal transmitters 5a and 7a are door-specific, ohmic Resistors connected downstream, the lines 51 and 52, the resistors R11 and R12 and resistors R21 and R22 are assigned to lines 71 and 72, respectively.
  • the input resistances for the two-wire connections of the Control unit 9 are set accordingly, the lines 51 and 52, the input resistances R31 and R32 and lines 71 and 72 are the input resistors R41 and R42 are assigned. In Fig. 1, these input resistances are only understandable Representation drawn outwards.
  • the output signals I1 and I9 the signal generator 5a and 7a corresponding to the resistance ratios R11, R31; R12, R32 as well as R21, R41; R22, R42 coded and as coded output signals I1a1, I1a2 and I9a1, I9a2 transmitted.
  • the voltage level transmitted by the signal generators 5a, 7a is therefore dependent on the above-mentioned Resistances and resistance relationships. It becomes a potential burglar difficult when cutting through the plurality of different output signals carrying lines 51, 52 and 71, 72, an effective level for opening the doors of the To find motor vehicle. This is particularly difficult because of the two-wire connections at two inputs of the control unit 9 for opening a door at the same time two him unknown, different signal levels would have to apply. At best, this would also be for a knowledgeable burglar with a lot of time, who during breakouts and Theft is usually not available.
  • the coding of the output signals can be Use I1 and I9 of signal generators 5a and 7a.
  • a central locking device shown in Fig. 2 is each of the doors VL, VR, HL and HR with an actuator 1 to designed as a door lock 4 equipped, the actuators 1 and 2 in turn the signal generator 5a, 7a, which is an output signal Deliver I1, I9 to open the central locking device and the signal transmitter 5b, 7b, which is an output signal for closing the central locking device deliver, exhibit. All actuators 1 to 4 also have the signal transmitters 5c, 5d, 6c, 6d, 7c, 7d, 8c, 8d that send a status signal indicating whether the door is open or closed is. The output signals of the signal generators 5e, 6e, 7e and 8e indicate whether the Theft protection is activated.
  • the output signals of the signal transmitters are sent to the decentralized control units 10 to 13 assigned to the individual actuators 1 to 4 transmitted, which communicate here with the central control unit 9 in time-division multiplexing.
  • each decentralized control unit receives 10 to 13 also selected output signals of the signal generators of the other actuators 1 to 4, from which the control devices 10 to 13 control signals 1 to 8 for controlling the Determine the respective motor M1 to M4.
  • connection between the signal generators 5a and 7a with the assigned, decentralized ones Control units 10 and 11 are also designed as two-wire connections.
  • Corresponding 1 in the two-wire connections are resistors arranged, on the one hand the signal transmitters 5a and 7a and on the other hand as input resistors are assigned to the decentralized control units 10 and 11.
  • the two-wire connection of the signal generator 5a are in turn the resistance ratios R11, R31 and R12, R32 before.
  • the two-wire connection of the signal generator 7a the resistance ratios R21, R41 and R22, R42.
  • control devices 10, 11 could also be mechanically connected to the associated door locks be integrated, as indicated by the dashed frames 53 and 73. This would lead to connections between the signal generators 5a and 7a Decentralized control units 10 and 11 may be omitted or inaccessible. It could however, conventional signal transmission takes place in each case to the central control unit 9. Also for a connection between the central control unit 9 and the decentralized control units 10 to 13, depending on the circumstances, using the above described principle to improve the security against burglary.
  • Fig. 3 in an alternative embodiment, only the circuit of the signal generator 5a and 7a.
  • the connection to a central control device 9 takes place in each case via a two-wire connection 51, 52 or 71, 72.
  • the lines 52 and 72 serve here as Reference lines that are connected and connected to the control unit 9 with a single line 57 are fed.
  • the two-wire connection is through the lines 51 and 52 of the signal generator 5a shown with a central control device 9, on the latter Input a comparator circuit 91 is.
  • the signal I1 of the signal generator 5a becomes one Active element in the manner of a decentralized control unit 10 to which the two Lines 51 and 52 are connected.
  • This control unit forms for transmission on the Line 51 a periodic square wave signal I1a1 and for transmission with the line 52 an inverse signal I1a2.
  • Only in the case of transmission and detection of such Signal sequences by the control device 9 are control signals for controlling the motors M1 to M4 delivered.
  • the rectangle height and width can also be used for a vehicle and / or Door-specific coding can be used, so that there is a high level of security against break-ins given is.

Description

Die Erfindung betrifft eine Zentralverriegelungseinrichtung für Kraftfahrzeuge mit einer Anzahl von in Türen und/oder in Klappen angeordneten Aktuatoren und einer Vorrichtung zur Steuerung der Aktuatoren, bei der jedem der Aktuatoren mindestens ein Stellelement und mindestens ein Signalgeber zugeordnet sind. Das Ausgangssignal der Signalgeber gibt einen Zustand des Stellelements wieder. Die Stellelemente werden von einem Steuergerät in Abhängigkeit zumindest des Ausgangssignals eines Signalgebers eines der Aktuatoren gesteuert.The invention relates to a central locking device for motor vehicles with a number of in doors and / or actuators arranged in flaps and a device for controlling the Actuators in which each of the actuators has at least one control element and at least one a signal generator are assigned. The output signal of the signal generator gives one State of the control element again. The control elements are controlled by a control unit Dependency of at least the output signal of a signal generator of one of the actuators controlled.

Bei der deutschen Patentschrift DE 40 32 613 C1 führt ein Potentialwechsel an einem der Eingänge zu einer Ansteuerung der Ausgänge der zentralen Steuereinheit. Die Betätigung der Stellelemente im Verriegelungs- oder Entriegelungssinn ist von der Richtung des Potentialwechsels abhängig. Dabei liegt in den Steuerschaltungen bei einem entriegelten Fahrzeug an allen Eingängen der zentralen Steuereinheit Pluspotential und bei verriegeltem Fahrzeug Minuspotential an. Für unautorisierte Personen besteht damit die Möglichkeit, die Leitungen zu durchtrennen und durch gezielte Potentialaufschaltung ein Stellelement im Entriegelungssinn zu betätigen und damit das Fahrzeug unbefugt zu öffnen.In the German patent DE 40 32 613 C1, a change of potential leads to one of the inputs to control the outputs of the central control unit. The Actuation of the control elements in the locking or unlocking direction is from Direction of potential change depending. This is included in the control circuits an unlocked vehicle at all entrances to the central control unit Plus potential and with locked vehicle minus potential. For unauthorized This gives people the opportunity to cut the lines and through targeted activation of a control element in the unlocking sense and thus opening the vehicle without authorization.

Weiter ist aus der Schrift EP 0 446 574 A2 eine Zentralverriegelungseinheit bekannt, die neben einem Zentralverriegelungsteil ein Sicherungsteil aufweist. Dieses wird über einen Steuereingang nur angesteuert, wenn ein Verriegelungsschalter und ein Entriegelungsschalter gleichzeitig betätigt werden. Ein entsprechendes Signal wird zur Einschaltung bzw. Aktivierung der mechanischen Sicherheitsvorrichtung bzw. einer Stellelementblockierung verwendet. Auch hier kann durch eine gezielte Potentialaufschaltung durch unbefugte Personen eine Entriegelung vorgenommen und das Fahrzeug auf relativ einfache Weise geöffnet werden. Furthermore, a central locking unit is known from the document EP 0 446 574 A2, which has a security part in addition to a central locking part. This is about one Control input only controlled when a locking switch and a Unlocking switches are operated simultaneously. A corresponding signal becomes Switching on or activating the mechanical safety device or one Control block used. Again, through a targeted Unlocking potential has been unlocked and the vehicle can be opened in a relatively simple manner.

In der nicht vorveröffentlichten deutschen Patentanmeldung DE 196 09 753.3 ist eine Zentralverriegelungseinrichtung beschrieben, bei der ein Signal zwischen einem Signalgeber als Schalter und einem Steuergerät fahrzeug- und/oder türspezifsch kodiert ist. Insbesondere ist dies das Ausgangssignal des Signalgebers, der den Zustand "System-Öffnen" wiedergibt. Damit ist es einer unbefugten Person nicht möglich, durch einfaches Durchtrennen der elektrischen Verbindung zwischen dem Signalgeber und dem Steuergerät und Anlegen eines beispielsweise im Fahrzeug vorhandenen Spannungspegels (Masse oder Bordnetzspannung) das Kraftfahrzeug zu öffnen.In the unpublished German patent application DE 196 09 753.3 there is one Central locking device described in which a signal between a Signal transmitter as switch and a control unit coded vehicle and / or door specific is. In particular, this is the output signal of the signal generator, the state "System Open" shows. It is not possible for an unauthorized person to go through simply cut the electrical connection between the signal generator and the control unit and creating an existing one in the vehicle, for example Voltage level (mass or vehicle electrical system voltage) to open the motor vehicle.

Aufgabe der Erfindung ist es, eine Vorrichtung zur Steuerung einer Anzahl von in Türen und/oder Klappen angeordneten Aktuatoren einer Zentralverriegelungseinrichtung zu schaffen, durch die die Sicherheit der Zentralverriegelungseinheit gegen unbefugte Betätigung erhöht wird.The object of the invention is to provide a device for controlling a number of doors and / or flaps arranged actuators of a central locking device create the security of the central locking unit against unauthorized persons Actuation is increased.

Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst. Vorteilhafte Ausbildungen der Erfindung sind in den Unteransprüchen dargestellt.
Gemäß der Erfindung ist vorgesehen, daß zwischen wenigstens einem Signalgeber und dem Steuergerät zur Signalübertragung eine Verbindung aus wenigstens zwei Drähten als Mehrdrahtverbindung, zweckmäßig als Zweidrahtverbindung, hergestellt ist. Eine solche Anordnung wird bevorzugt zwischen einem Steuergerät und Signalgebem hergestellt, denen das Ausgangssignal "System-Öffnen" zugeordnet ist.This object is achieved by the features of patent claim 1. Advantageous developments of the invention are presented in the subclaims.
According to the invention it is provided that between at least one signal transmitter and the control unit for signal transmission a connection of at least two wires is established as a multi-wire connection, expediently as a two-wire connection. Such an arrangement is preferably produced between a control unit and signal transmitter, to which the output signal "system opening" is assigned.

Durch unterschiedliche Signalarten und/oder Signalverarbeitungen im Steuergerät in Verbindung mit den einzelnen Drahtleitungen, ist es einer unbefugten Person nur mit erheblichen Schwierigkeiten und einem erheblichen Zeitaufwand möglich, das Kraftfahrzeug zu öffnen. Insbesondere ist ein Öffnen des Kraftfahrzeugs durch ein einfaches Anlegen eines fahrzeugintem vorhandenen Spannungspegels nicht möglich.By different signal types and / or signal processing in the control unit in Connection to the individual wire lines, it is only with an unauthorized person considerable difficulties and a considerable amount of time possible, the Open motor vehicle. In particular, the motor vehicle is opened by a It is not possible to simply apply an existing voltage level in the vehicle.

In einer Ausführungsform kann zusätzlich zu der üblichen Signalleitung eine zweite Drahtverbindung als Referenzleitung ausgebildet sein. Diese Referenzleitung kann eine Verbindung zur Aktivierung einer Wegfahrsperre und/oder Alarmanlage herstellen oder an einen redundanten Anschluß des Steuergeräts angeschlossen sein. Eine Durchtrennung der Referenzleitung, evtl. zusammen mit der Signalleitung, führt dann zur Alarmgabe, ggf. zu einer Blockierung des Stellelements oder verhindert ein Wegfahren des Fahrzeugs. In one embodiment, a second can be used in addition to the usual signal line Wire connection can be designed as a reference line. This reference line can be a Establish a connection to activate an immobilizer and / or alarm system or be connected to a redundant connection of the control unit. A Cutting the reference line, possibly together with the signal line, then leads to Alarm signal, possibly to a blocking of the control element or prevents moving away of the vehicle.

In einer anderen oder weiterführenden Ausführungsform wird auf einer Drahtverbindung ein zu dem Ausgangssignal eines Signalgebers inverses Signal auf der anderen Drahtverbindung übertragen. Die Invertierung ist hier durch ein aktives Bauteil, bevorzugt im Bereich des Signalgebers, durchzuführen, mit dem bevorzugt auch ein periodisches Signal erzeugt wird. Das Steuergerät ist auf eine Verarbeitung solcher Signale eingestellt. Für einen potentiellen Einbrecher ist das Erzeugen und Anlegen solcher Signale an durchtrennte Leitungen üblicherweise nicht möglich.In another or further embodiment, a wire connection is used signal inverse to the output signal of a signal generator on the other wire connection transfer. The inversion is here by an active component, preferably in the area of the signal generator, with which preferably also generates a periodic signal becomes. The control unit is set to process such signals. For a potential A burglar is the generation and application of such signals to severed lines usually not possible.

Eine alternative oder weiterführende Ausführungsform besteht darin, daß ein codiertes Signal als Ausgangssignal eines Signalgebers übertragen wird, wobei die Codierung fahrzeug- und/oder türspezifisch ist. Einfach und zweckmäßig ist eine Spannungscodierung durchführbar, die über ein Widerstandsverhältnis von Widerständen in den Drahtverbindungen und/oder über einem Signalgeber zugeordnete Dioden erfolgen kann. Für eine hohe Sicherheit werden auf den Zwei- oder Mehrdrahtverbindungen jeweils unterschiedlich codierte Signale übertragen. Eine solche Codierung ist von einem potentiellen Einbrecher nur mit großen Schwierigkeiten zu durchschauen und üblicherweise nicht nachzuvollziehen, insbesondere dann nicht, wenn in jedem Fahrzeug und an jeder Tür andere Codierungen verwendet sind. In einer solchen Anordnung wird bevorzugt ein selbstlemendes Steuergerät eingesetzt, das die verwendeten Codierungen im normalen Betriebsfall lernt und bei anderen, zugeführten Codesignalen blockiert und/oder eine Alarmanlage und/oder eine Wegfahrsperre ansteuert.An alternative or further embodiment is that a coded Signal is transmitted as the output signal of a signal generator, the coding vehicle and / or door-specific. Voltage coding is simple and practical feasible using a resistance ratio of resistors in the wire connections and / or can take place via diodes assigned to a signal transmitter. For a high Security is different on the two or multi-wire connections transmit coded signals. Such coding is from a potential burglar difficult to see through and usually not comprehensible, especially not if there are different codes in every vehicle and on every door are used. In such an arrangement, a self-learning control device is preferred used, which learns the coding used in normal operation and with others, supplied code signals blocked and / or an alarm system and / or an immobilizer controls.

Die erfindungsgemäße Mehrdraht-, insbesondere Zweidrahtverbindung, ist auch bei einer Zentralverriegelungseinrichtung verwendbar, bei dem jedem Aktuator ein dezentrales Steuergerät zugeordnet ist und die dezentralen Steuergeräte an ein zentrales Steuergerät angeschlossen sind. Die Einbruchssicherheit wird durch eine erfindungsgemäße Verbindung zwischen Signalgebern und zugeordneten dezentralen Steuergeräten erhöht. Ebenso ist eine solche Verbindung zwischen den dezentralen Steuergeräten und dem zentralen Steuergerät möglich. The multi-wire, in particular two-wire connection according to the invention is also one Central locking device can be used in which each actuator has a decentralized control unit is assigned and the decentralized control units are connected to a central control unit are. The security against burglary is ensured by a connection according to the invention between signal generators and assigned decentralized control units increased. Likewise such a connection between the decentralized control units and the central control unit possible.

Bei der Verbindung von Drahtverbindungen unterschiedlicher Signalgeber, insbesondere bei der Verbindung von Referenzleitungen, wird vorgeschlagen, zur Entkopplung Dioden einzusetzen, die ggf. in einer weiteren Verwendung zur Codierung herangezogen werden können.When connecting wire connections of different signal generators, especially with the connection of reference lines, it is proposed to use diodes for decoupling, which may be used for coding in a further use.

Anhand einer Zeichnung werden Ausführungsbeispiele der Erfindung näher erläutert.Exemplary embodiments of the invention are explained in more detail with reference to a drawing.

Es zeigen:

Fig. 1
ein Blockschaltbild einer erfindungsgemäßen Zentralverriegelungseinrichtung,
Fig. 2
ein Blockschaltbild einer zweiten, erfindungsgemäßen Zentralverriegelungseinrichtung,
Fig. 3
ein Blockschaltbild eines Teils einer dritten, erfindungsgemäßen Zentralverriegelungseinrichtung und
Fig.4
ein Blockschaltbild einer vierten, erfindungsgemäßen Zentralverriegelungseinrichtung.
Show it:
Fig. 1
2 shows a block diagram of a central locking device according to the invention,
Fig. 2
2 shows a block diagram of a second central locking device according to the invention,
Fig. 3
a block diagram of part of a third central locking device according to the invention and
Figure 4
a block diagram of a fourth, central locking device according to the invention.

Die in der Fig. 1 gezeigte Zentralverriegelungseinrichtung für ein Kraftfahrzeug beinhaltet die Zentralverriegelungssteuerung der Türen VL, VR, HL und HR. Zusätzlich könnte die Schließfunktion einer Heckklappe einbezogen werden. Jede der Türen VL, VR, HL und HR ist mit einem als Türschloß ausgebildeten Aktuator 1 bis 4 ausgestattet, wobei jeder der Aktuatoren 1 bis 4, je nach Einsatz im Kraftfahrzeug, eine unterschiedliche Anzahl von Signalgebern 5 bis 8 aufweist. Die Signalgeber 5a und 7a senden jeweils ein Zustandssignal "System-Öffnen" und die Signalgeber 5b und 7b "System-Schließen". Weitere Signalgeber 5c, 5d, 6c, 6d, 7c, 7d und 8c, 8d geben den Zustand der jeweiligen Tür an und die Signalgeber 5e, 6e, 7e und 8e senden ein Signal, das angibt, ob die Diebstahlsicherung aktiviert ist. Die Türen HL und HR weisen keine vom Benutzer aktivierbaren Türschlösser 3 und 4 auf. Aus diesem Grund fehlen hier die dafür vorgesehenen Signalgeber. Alle Signalgeber sind als Hall-Sensoren oder Mikroschalter ausgebildet. The central locking device for a motor vehicle shown in FIG. 1 includes the Central locking control of the doors VL, VR, HL and HR. In addition, the Locking function of a tailgate can be included. Each of the doors VL, VR, HL and HR is equipped with an actuator 1 to 4 designed as a door lock, each of the Actuators 1 to 4, depending on the use in the motor vehicle, a different number of Signal generators 5 to 8. The signal generators 5a and 7a each send a status signal "System opening" and the signal generators 5b and 7b "System closing". More signal heads 5c, 5d, 6c, 6d, 7c, 7d and 8c, 8d indicate the state of the respective door and the Signal generators 5e, 6e, 7e and 8e send a signal which indicates whether the anti-theft device is activated is. The doors HL and HR do not have any door locks 3 and which can be activated by the user 4 on. For this reason, the signaling devices intended for this are missing here. All signal heads are designed as Hall sensors or microswitches.

Die Ausgangssignale der Signalgeber 5 bis 8 werden dem zentralen Steuergerät 9 zugeführt, welches aus den Ausgangssignalen die Steuersignale S1 bis S8 zur Ansteuerung der Motoren M1 bis M4 ermittelt. Die Ausgangssignale 5a, 5b und 7a, 7b sind dabei aktive Signale, d.h. in Abhängigkeit deren Änderung erfolgt die Bildung der Steuersignale S1 bis S8 primär. Die Ausgangssignale der restlichen Signalgeber werden nur als Zustandssignale berücksichtigt. Eine Änderung dieser Zustandssignale bewirkt keine Ansteuerung der Motoren M1 bis M4.The output signals of the signal generators 5 to 8 are fed to the central control device 9, which from the output signals, the control signals S1 to S8 to control the Motors M1 to M4 determined. The output signals 5a, 5b and 7a, 7b are active Signals, i.e. depending on their change, the control signals S1 to S8 are formed primary. The output signals of the remaining signal generators are only used as status signals considered. A change in these status signals does not trigger the motors M1 to M4.

Im Ausführungsbeispiel sind zur Einbruchssicherung die Signalgeber 5a und 7a jeweils in einer Zweidrahtverbindung über elektrische Leitungen 51, 52 bzw. 71, 72 mit dem zentralen Steuergerät 9 verbunden. Den Signalgebern 5a und 7a sind türspezifische, ohmsche Widerstände nachgeschaltet, wobei den Leitungen 51 und 52 die Widerstände R11 und R12 und den Leitungen 71 und 72 entsprechend die Widerstände R21 und R22 zugeordnet sind.In the exemplary embodiment, the signal transmitters 5a and 7a are each in order to prevent burglary a two-wire connection via electrical lines 51, 52 and 71, 72 to the central one Control unit 9 connected. The signal transmitters 5a and 7a are door-specific, ohmic Resistors connected downstream, the lines 51 and 52, the resistors R11 and R12 and resistors R21 and R22 are assigned to lines 71 and 72, respectively.

Gleichzeitig können auch die Eingangswiderstände für die Zweidrahtverbindungen des Steuergeräts 9 entsprechend festgelegt werden, wobei den Leitungen 51 und 52 die Eingangswiderstände R31 und R32 sowie den Leitungen 71 und 72 die Eingangswiderstände R41 und R42 zugeordnet sind. In Fig. 1 sind diese Eingangswiderstände nur zur verständlicheren Darstellung nach außen gezeichnet. Damit werden die Ausgangssignale I1 und I9 der Signalgeber 5a und 7a entsprechend den Widerstandsverhältnissen R11, R31; R12, R32 sowie R21, R41; R22, R42 codiert und als codierte Ausgangssignale I1a1, I1a2 und I9a1, I9a2 übertragen.At the same time, the input resistances for the two-wire connections of the Control unit 9 are set accordingly, the lines 51 and 52, the input resistances R31 and R32 and lines 71 and 72 are the input resistors R41 and R42 are assigned. In Fig. 1, these input resistances are only understandable Representation drawn outwards. The output signals I1 and I9 the signal generator 5a and 7a corresponding to the resistance ratios R11, R31; R12, R32 as well as R21, R41; R22, R42 coded and as coded output signals I1a1, I1a2 and I9a1, I9a2 transmitted.

Der von den Signalgebern 5a, 7a übertragene Spannungspegel ist somit abhängig von den o.g. Widerständen und Widerstandsverhältnissen. Es wird somit einem potentiellen Einbrecher schwer fallen, beim Durchtrennen der die Mehrzahl unterschiedlicher Ausgangssignale tragenden Leitungen 51, 52 bzw. 71, 72, einen wirksamen Pegel zum öffnen der Türen des Kraftfahrzeugs zu finden. Dies ist besonders schwierig, da er durch die Zweidrahtverbindungen an zwei Eingängen des Steuergeräts 9 für die Öffnung einer Tür gleichzeitig zwei ihm unbekannte, unterschiedliche Signalpegel anlegen müßte. Dies wäre allenfalls auch für einen fachkundigen Einbrecher mit hohem Zeitaufwand verbunden, der bei Aufbrüchen und Diebstählen meist nicht zur Verfügung steht. The voltage level transmitted by the signal generators 5a, 7a is therefore dependent on the above-mentioned Resistances and resistance relationships. It becomes a potential burglar difficult when cutting through the plurality of different output signals carrying lines 51, 52 and 71, 72, an effective level for opening the doors of the To find motor vehicle. This is particularly difficult because of the two-wire connections at two inputs of the control unit 9 for opening a door at the same time two him unknown, different signal levels would have to apply. At best, this would also be for a knowledgeable burglar with a lot of time, who during breakouts and Theft is usually not available.

Auch bei einer Zentralverriegelungseinrichtung gemäß Fig. 2, bei der jedem Aktuator 1 bis 4 ein dezentrales Steuergerät 10 bis 13 zugeordnet ist, läßt sich die Codierung der Ausgangssignale I1 und I9 der Signalgeber 5a und 7a anwenden.Also in the case of a central locking device according to FIG. 2, in which each actuator 1 to 4 A decentralized control unit 10 to 13 is assigned, the coding of the output signals can be Use I1 and I9 of signal generators 5a and 7a.

Nach dieser in Fig. 2 dargestellten Ausführungsform einer Zentralverriegelungseinrichtung ist jede der Türen VL, VR, HL und HR mit einem als Türschloß ausgebildeten Aktuator 1 bis 4 ausgestattet, wobei die Aktuatoren 1 und 2 wiederum die Signalgeber 5a, 7a, die ein Ausgangssignal I1, I9 zum Öffnen der Zentralverriegelungseinrichtung abgeben und die Signalgeber 5b, 7b, die ein Ausgangssignal zum Schließen der Zentralverriegelungseinrichtung abgeben, aufweisen. Alle Aktuatoren 1 bis 4 besitzen außerdem die Signalgeber 5c, 5d, 6c, 6d, 7c, 7d, 8c, 8d, die ein Zustandssignal senden, das angibt, ob die Tür offen oder geschlossen ist. Die Ausgangssignale der Signalgeber 5e, 6e, 7e und 8e geben an, ob die Diebstahlsicherung aktiviert ist.According to this embodiment of a central locking device shown in Fig. 2 is each of the doors VL, VR, HL and HR with an actuator 1 to designed as a door lock 4 equipped, the actuators 1 and 2 in turn the signal generator 5a, 7a, which is an output signal Deliver I1, I9 to open the central locking device and the signal transmitter 5b, 7b, which is an output signal for closing the central locking device deliver, exhibit. All actuators 1 to 4 also have the signal transmitters 5c, 5d, 6c, 6d, 7c, 7d, 8c, 8d that send a status signal indicating whether the door is open or closed is. The output signals of the signal generators 5e, 6e, 7e and 8e indicate whether the Theft protection is activated.

Die Ausgangssignale der Signalgeber werden jeweils an die ebenfalls in den Türen befindlichen, den einzelnen Aktuatoren 1 bis 4 zugeordneten, dezentralen Steuergeräte 10 bis 13 übertragen, welche hier im Zeitmultiplexverfahren mit dem zentralen Steuergerät 9 kommunizieren.The output signals of the signal transmitters are sent to the decentralized control units 10 to 13 assigned to the individual actuators 1 to 4 transmitted, which communicate here with the central control unit 9 in time-division multiplexing.

Neben den Ausgangssignalen der eigenen Signalgeber erhält jedes dezentrale Steuergerät 10 bis 13 auch ausgewählte Ausgangssignale der Signalgeber der anderen Aktuatoren 1 bis 4, aus denen die Steuergeräte 10 bis 13 die Steuersignale 1 bis 8 zur Ansteuerung des jeweiligen Motors M1 bis M4 ermitteln.In addition to the output signals of the own signal generators, each decentralized control unit receives 10 to 13 also selected output signals of the signal generators of the other actuators 1 to 4, from which the control devices 10 to 13 control signals 1 to 8 for controlling the Determine the respective motor M1 to M4.

Die Verbindung zwischen den Signalgebem 5a und 7a mit den zugeordneten, dezentralen Steuergeräten 10 und 11 ist auch hier als Zweidrahtverbindung ausgeführt. Entsprechend der Ausführungsform nach Fig. 1 sind in den Zweidrahtverbindungen wiederum Widerstände angeordnet, die einerseits den Signalgebern 5a und 7a sowie andererseits als Eingangswiderstände den dezentralen Steuergeräten 10 und 11 zugeordnet sind. In der Zweidrahtverbindung des Signalgebers 5a liegen dadurch wiederum die Widerstandsverhältnisse R11, R31 und R12, R32 vor. Entsprechend liegen in der Zweidrahtverbindung des Signalgebers 7a die Widerstandsverhältnisse R21, R41 und R22, R42 vor. Diese Widerstandskombinationen sind wiederum türspezifisch festgelegt, so daß auch hier codierte Ausgangssignale I1a1, I1a2 und I9a1, I9a2 übertragen werden. Dadurch ist es für einen potentiellen Einbrecher mit erheblichen Schwierigkeiten verbunden, nach Durchtrennung einer der Zweidrahtverbindungen eines der dezentralen Steuergeräte 10, 11 so anzusteuern, daß vom zentralen Steuergerät 9 ein öffnungssignal für eine Tür abgegeben wird.The connection between the signal generators 5a and 7a with the assigned, decentralized ones Control units 10 and 11 are also designed as two-wire connections. Corresponding 1 in the two-wire connections are resistors arranged, on the one hand the signal transmitters 5a and 7a and on the other hand as input resistors are assigned to the decentralized control units 10 and 11. In the two-wire connection of the signal generator 5a are in turn the resistance ratios R11, R31 and R12, R32 before. Correspondingly, the two-wire connection of the signal generator 7a the resistance ratios R21, R41 and R22, R42. These combinations of resistances are in turn set specific to the door, so that here too coded output signals I1a1, I1a2 and I9a1, I9a2 are transmitted. This makes it a potential burglar associated with considerable difficulties after cutting one of the two-wire connections to control one of the decentralized control units 10, 11 so that the central Control unit 9 an opening signal for a door is issued.

Alternativ könnten die Steuergeräte 10, 11 auch in die zugeordneten Türschlösser mechanisch integriert sein, wie dies mit den strichlierten Rahmen 53 und 73 angedeutet ist. Dadurch würden Leitungsverbindungen zwischen den Signalgebern 5a bzw. 7a zu den dezentralen Steuergeräten 10 bzw. 11 ggf. entfallen oder unzugänglich sein. Es könnte jedoch eine herkömmliche Signalübermittlung jeweils an das zentrale Steuergerät 9 erfolgen. Auch für eine Verbindung zwischen dem zentralen Steuergerät 9 und den dezentralen Steuergeräten 10 bis 13 kann je nach den Gegebenheiten unter Anwendung des vorstehend beschriebenen Prinzips eine Verbesserung der Einbruchssicherheit erhalten werden.Alternatively, the control devices 10, 11 could also be mechanically connected to the associated door locks be integrated, as indicated by the dashed frames 53 and 73. This would lead to connections between the signal generators 5a and 7a Decentralized control units 10 and 11 may be omitted or inaccessible. It could however, conventional signal transmission takes place in each case to the central control unit 9. Also for a connection between the central control unit 9 and the decentralized control units 10 to 13, depending on the circumstances, using the above described principle to improve the security against burglary.

In Fig. 3 ist in einer alternativen Ausführungsform nur die Schaltung der Signalgeber 5a und 7a dargestellt. Auch hier erfolgt die Verbindung zu einem zentralen Steuergerät 9 jeweils über eine Zweidrahtverbindung 51, 52 bzw. 71, 72. Die Leitungen 52 und 72 dienen hier als Referenzleitungen, die verbunden und mit einer einzigen Leitung 57 dem Steuergerät 9 zugeführt sind. Für eine Entkopplung sind in den Leitungszweigen 52 und 72 jeweils Dioden 54 und 74 angeordnet.In Fig. 3, in an alternative embodiment, only the circuit of the signal generator 5a and 7a. Here, too, the connection to a central control device 9 takes place in each case via a two-wire connection 51, 52 or 71, 72. The lines 52 and 72 serve here as Reference lines that are connected and connected to the control unit 9 with a single line 57 are fed. For decoupling, there are diodes in the line branches 52 and 72, respectively 54 and 74 arranged.

In Fig. 4 ist in einer weiteren Ausführungsform die Zweidrahtverbindung durch die Leitungen 51 und 52 des Signalgebers 5a mit einem zentralen Steuergerät 9 dargestellt, an dessen Eingang eine Vergleicherschaltung 91 liegt. Das Signal I1 des Signalgebers 5a wird einem aktiven Element in der Art eines dezentralen Steuergeräts 10 zugeführt, an das die beiden Leitungen 51 und 52 angeschlossen sind. Dieses Steuergerät bildet zur Übertragung auf der Leitung 51 ein periodisches Rechtecksignal I1a1 und für eine Übertragung mit der Leitung 52 ein dazu inverses Signal I1a2. Nur bei einer Übertragung und Erkennung solcher Signalfolgen durch das Steuergerät 9 werden Steuersignale zur Ansteuerung der Motoren M1 bis M4 abgegeben. Die Rechteckhöhe und -breite kann zudem für eine fahrzeugund/oder türspezifische Codierung verwendet werden, so daß hier eine hohe Einbruchssicherheit gegeben ist.4, in a further embodiment, the two-wire connection is through the lines 51 and 52 of the signal generator 5a shown with a central control device 9, on the latter Input a comparator circuit 91 is. The signal I1 of the signal generator 5a becomes one Active element in the manner of a decentralized control unit 10 to which the two Lines 51 and 52 are connected. This control unit forms for transmission on the Line 51 a periodic square wave signal I1a1 and for transmission with the line 52 an inverse signal I1a2. Only in the case of transmission and detection of such Signal sequences by the control device 9 are control signals for controlling the motors M1 to M4 delivered. The rectangle height and width can also be used for a vehicle and / or Door-specific coding can be used, so that there is a high level of security against break-ins given is.

Claims (12)

  1. Central locking device for vehicles having a number of actuators arranged in doors and/or in flaps, and a device for controlling the actuators in which at least one final controlling element and at least one signal transmitter (5, 6, 7, 8) is assigned to each of the actuators (1, 2, 3, 4), the output signal of the signal transmitter (5, 6, 7, 8) representing a state of the final controlling element, and the final controlling elements being controlled by a control unit as a function of at least the output signal of a signal transmitter of one of the actuators, characterized in that a multi-wire connection composed of at least two lines (51, 52 and 71, 72) is produced as a two-wire connection between at least one signal transmitter (5a; 7a) and the control unit (9; 10, 11) for transmitting signals.
  2. Central locking device according to Claim 1, characterized in that at least the signal transmitters (5a, 7a) to which the "open system" output signal is assigned have the connection to at least two lines (51, 52 and 71, 72) as a two-wire connection.
  3. Central locking device according to Claim 1 or 2, characterized in that a wire connection (52, 72 in Fig. 3) is embodied as a reference line.
  4. Central locking device according to Claim 1 or 2, characterized in that on a wire connection (52 in Fig. 4), an inverse signal (I1a2 in Fig. 4) to the output signal (I1a1 in Fig. 4) of a signal transmitter (5a) is transmitted on the other wire connection (51 in Fig. 4).
  5. Central locking device according to Claim 1 or 2, characterized in that a coded signal (I1a1, I1a2 and I9a1, I9a2) is transmitted as an output signal of a signal transmitter (5a, 7a) on at least one wire connection (51, 52 and 71, 72), the coding being vehicle-specific and/or door-specific.
  6. Central locking device according to Claim 5, characterized in that the output signal is voltage-coded.
  7. Central locking device according to Claim 6, characterized in that the voltage coding is carried out by means of a resistance ratio (R11, R31; R12, R32 and R21, R41; R22, R42) which can be learned by the control unit, an ohmic resistor (R11, R12 and R21, R22) being assigned to the respective signal transmitter (5a, 7a), and a resistor (R31, R32 and R41, R42) being assigned to the respective input of the control unit (9).
  8. Central locking device according to Claim 6, characterized in that the voltage coding is carried out by means of one or more diodes (54, 74) which are assigned to the signal generator (5a,7a).
  9. Central locking device according to one of Claims 5 to 8, characterized in that signals which are coded differently are transmitted on the individual lines of the multi-wire connection.
  10. Central locking device according to one of Claims 1 to 9, characterized in that decentralized control units (10, 11, 12, 13) to which a signal generator (5a, 7a) is connected with a multi-wire connection are assigned to the actuators (1, 2, 3, 4) and in that the decentralized control units (10, 11, 12, 13) are connected to a central control unit (9).
  11. Central locking device according to Claim 10, characterized in that the connection between at least one of the decentralized control units (10, 11, 12, 13) and the central control unit (9) is produced by means of at least one two-wire connection.
  12. Central locking device according to one of Claims 1 to 11, characterized in that wire connections (52, 72) are connected to one another, in particular as a reference line of different signal generators (5a, 7a), and are supplied to a common input (line 57) of the control unit (9) by means of a wire connection, and in that upstream of the connection point there are diodes (54, 74) in the wire connections (52, 72) for the purpose of decoupling.
EP97111805A 1996-08-24 1997-07-11 Device for controlling a plurality of actuators in a central locking system Expired - Lifetime EP0826857B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19634261 1996-08-24
DE19634261 1996-08-24

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DE19924301A1 (en) * 1999-05-27 2000-12-21 Mekra Lang Gmbh & Co Kg Control system for electrically operated functional units in motor vehicles

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DE4032613C1 (en) * 1990-10-15 1991-05-02 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Control circuit for automobile centralised locking system - has relay coupled to positive battery terminal via key-operated switch
DE19518306B4 (en) * 1994-05-27 2007-04-19 Volkswagen Ag Device for controlling a number of mutually communicating actuators of a system

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