EP1713997B1 - Electric circuit arrangement - Google Patents

Electric circuit arrangement Download PDF

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Publication number
EP1713997B1
EP1713997B1 EP20050701384 EP05701384A EP1713997B1 EP 1713997 B1 EP1713997 B1 EP 1713997B1 EP 20050701384 EP20050701384 EP 20050701384 EP 05701384 A EP05701384 A EP 05701384A EP 1713997 B1 EP1713997 B1 EP 1713997B1
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EP
European Patent Office
Prior art keywords
transistor
circuit arrangement
hand
voltage source
electrical circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP20050701384
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German (de)
French (fr)
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EP1713997A1 (en
Inventor
Hartmut Paschen
Michael Kassner
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.)
Leopold Kostal GmbH and Co KG
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Leopold Kostal GmbH and Co KG
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Publication of EP1713997A1 publication Critical patent/EP1713997A1/en
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Publication of EP1713997B1 publication Critical patent/EP1713997B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings
    • E05F15/689—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings specially adapted for vehicle windows
    • E05F15/695—Control circuits therefor
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
    • E05Y2201/404—Function thereof
    • E05Y2201/422—Function thereof for opening
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
    • E05Y2201/43—Motors
    • E05Y2201/434—Electromotors; Details thereof
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/25—Emergency conditions
    • E05Y2800/252—Emergency conditions the elements functioning only in case of emergency
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/40—Physical or chemical protection
    • E05Y2800/428—Physical or chemical protection against water or ice
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Type of wing
    • E05Y2900/55—Windows

Definitions

  • the present invention is based on an electrical circuit arrangement for influencing a power switching element assigned on the output side to an electric motor provided in a motor vehicle, which on the input side is connected to the positive pole (+) of the vehicle electrical system voltage source on the one hand and by a manually operable switching device both by means of a first, controlled via an electronic control device switching transistor, as well as by means of a second directly controlled by the switching device switching transistor to the negative pole (-) is to be connected.
  • Such circuitry is intended to provide an electrically powered aggregate, such as a motor vehicle, in a motor vehicle. a window or Schiebedachverstellsystem - to influence in a way that meets the requirements and legal requirements.
  • An electrical circuit arrangement according to the preamble of the main claim is characterized by the DE 100 00 530 A1 known.
  • mechanical changeover switches are used, which allow an optional connection one and the same circuit node with different potentials.
  • switches are technically complex and error-prone due to their complexity.
  • the present invention has the object, an electrical circuit of the type mentioned in such a way that the required safety function can be met without mechanical changeover switch.
  • the circuit arrangement comprises a microcomputer designed as a control unit 3, the input 3.11 is connected to a manually operable switching device 2.
  • the manually operable switching device 2 is designed as a push-button switch, upon actuation of which the input 3.11 of the control device 3 is connected to the positive pole (+) of the vehicle electrical system voltage source, also referred to as "plus".
  • a further circuit arrangement for the closing function can certainly fall back on the same control unit 3, to which this in addition to the one shown here still further inputs and outputs 3.1 x or 3.2x has, where the corresponding other components are connected.
  • An output 3.21 of the control unit 3 is connected to the base terminal of a switching transistor 4, whose emitter terminal with the also referred to as "ground" negative pole (-) of the board supply voltage source and its collector terminal with an input 1 'of the provided for adjusting the unit in question associated electric motor Power switching element 1 is connected.
  • the power switching device 1 is an electromechanical relay, the input side thereof being formed by the relay coil.
  • the other input 1 "of the power switching device 1, that is, the second terminal of the relay coil is connected to positive, ie to the positive pole (+) of the vehicle electrical system voltage source.
  • the normal operation of the circuit arrangement is such that via actuation of the manually operable switching device 2 plus, i. a positive input signal is applied to the input 3.11 of the control unit 3, whereupon this also outputs a positive output signal via its output 3.21 to the switching transistor 4.
  • the switching transistor 4 turns on and thus causes the energization of the relay coil of the power switching element 1, so that this attracts and causes operation of the associated electric motor in the relevant direction.
  • the situation is different with an emergency operation, which may be necessary, for example, when a vehicle is immersed in an especially salty water, for example due to an accident, as a result of which ia an immediate failure of the control unit 3 is caused.
  • an emergency operation which may be necessary, for example, when a vehicle is immersed in an especially salty water, for example due to an accident, as a result of which ia an immediate failure of the control unit 3 is caused.
  • the contacts 8 'and 8 " is formed by the conductivity in particular of the saline water, a resistance which is at least so low that a turn-on of the transistor 6 is reliably ensured.
  • the contacts 8', 8" can by adjacent surfaces on the Printed circuit board or better still be formed by parallel aligned pins.
  • An embodiment with pins can advantageously be designed so that they are guided on the outside of a housing and thus come into contact with the water before the other circuitry.
  • the transistor 9 When the control unit 3 fails, the transistor 9 is activated by the pull-up By means of a Schottky diode 11, the base of the transistor 4 which effects the switching on of the relay coil current in normal operation is additionally connected to the collector terminal of the transistor 9. This prevents inadvertent switching of the Transisto rs 4 can be done by its base possibly short-circuiting water resistance to plus.

Landscapes

  • Control Of Direct Current Motors (AREA)
  • Stopping Of Electric Motors (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Amplifiers (AREA)
  • Window Of Vehicle (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

A motor control arrangement includes a device connected to positive power such that device drives motor upon connecting to negative power. A switch connects to positive power upon actuation. A first transistor connects to switch via controller and connects between device and negative power. First transistor turns on causing device to connect to negative power upon switch actuation while controller is operational. A second transistor connects to switch and connects between device and negative power when controller is malfunctioned. Second transistor turns on causing device to connect to negative power upon switch actuation while controller is malfunctioned. A sensor connects to negative power upon contact with water. A third transistor connects to switch and sensor such that its collector-emitter path is connected in parallel to device. Third transistor turns on to short-circuit device thereby preventing device from driving motor upon water contacting sensor while controller is malfunctioned and switch actuation is void.

Description

Die vorliegende Erfindung geht aus von einer elektrischen Schaltungsanordnung zur Beeinflussung eines ausgangsseitig einem zur Verstellung eines in einem Kraftfahrzeug vorhandenen Aggregates vorgesehenen Elektromotor zugeordneten Leistungsschaltorgans, welches eingangsseitig einerseits mit dem positiven Pol (+) der Bordnetzspannungsquelle verbunden und andererseits durch eine manuell betätigbare Schaltvorrichtung sowohl mittels eines ersten, über ein elektronisches Steuergerät angesteuerten Schalttransistors, als auch mittels eines zweiten durch die Schaltvorrichtung direkt angesteuerten Schalttransistors mit dem negativen Pol (-) zu verbinden ist.The present invention is based on an electrical circuit arrangement for influencing a power switching element assigned on the output side to an electric motor provided in a motor vehicle, which on the input side is connected to the positive pole (+) of the vehicle electrical system voltage source on the one hand and by a manually operable switching device both by means of a first, controlled via an electronic control device switching transistor, as well as by means of a second directly controlled by the switching device switching transistor to the negative pole (-) is to be connected.

Derartige Schaltungsanordnungen sind dazu vorgesehen, ein in einem Kraftfahrzeug vorhandenes, elektrisch betriebenes Aggregat-wie z.B. ein Fenster- bzw. Schiebedachverstellsystem - in einer den Anforderungen bzw. den gesetzlichen Vorschriften entsprechenden Art und Weise zu beeinflussen.Such circuitry is intended to provide an electrically powered aggregate, such as a motor vehicle, in a motor vehicle. a window or Schiebedachverstellsystem - to influence in a way that meets the requirements and legal requirements.

Dabei ist es erforderlich, daß bei einem in der Schaltungsanordnung auftretenden Fehler - wie z.B. bei einer elektrischen Überbrückung eines Schaltungsteils - eine sogenannte "Gefahrenöffnung" möglich ist. Diese Gefahrenöffnung ist insbesondere bei in Kraftfahrzeugen vorhandenen, elektromotorisch betriebenen Fenster- und Schiebedachverstellsystemen von besonderer Bedeutung z.B. dann, wenn ein Kraftfahrzeug durch Unachtsamkeit oder einen Unfall in ein Gewässer gerät, das so tief ist, daß ein Ausstieg der Insassen nur durch ein Fenster oder durch das Schiebedach möglich ist. In einem solchen Falle muß gewährleistet sein, daß bei einer z.B. durch Salzwasser hervorgerufenen Überbrückung von Schaltungsteilen noch ein Betrieb des Elektromotors insbesondere in einer bevorzugten, nämlich das Öffnen der betreffenden Fahrzeugöffnung bewirkenden Drehrichtung möglich ist.It is necessary that a so-called "danger opening" is possible in an error occurring in the circuit - such as in an electrical bridging of a circuit part. This danger opening is particularly important in existing in motor vehicles, electric motor-operated window and Schiebedachverstellsystemen of particular importance, for example, when a motor vehicle by carelessness or accident in a body of water that is so deep that an exit of the occupants only through a window or through the sunroof is possible. In such a case, it must be ensured that, for example, in bridging circuit parts caused by salt water, operation of the electric motor, in particular in a preferred one, namely the Opening the relevant vehicle opening causing direction of rotation is possible.

Eine elektrische Schaltungsanordnung gemäß dem Oberbegriff des Hauptanspruchs ist durch die DE 100 00 530 A1 bekannt geworden. Bei diesem vorbekannten Gegenstand sind als manuell betätigbare Schaltvorrichtungen mechanische Wechselschalter eingesetzt, die ein wahlweises Verbinden ein und desselben Schaltungsknotens mit unterschiedlichen Potentialen ermöglichen. Solche Schalter sind jedoch technisch aufwendig und durch ihre Komplexität auch fehleranfällig.An electrical circuit arrangement according to the preamble of the main claim is characterized by the DE 100 00 530 A1 known. In this prior art subject as mechanical actuated switching devices mechanical changeover switches are used, which allow an optional connection one and the same circuit node with different potentials. However, such switches are technically complex and error-prone due to their complexity.

Der vorliegenden Erfindung liegt deshalb die Aufgabe zugrunde, eine elektrische Schaltungsanordnung der eingangs erwähnten Art derart weiterzubilden, daß die erforderliche Sicherheitsfunktion auch ohne mechanische Wechselschalter erfüllt werden kann.Therefore, the present invention has the object, an electrical circuit of the type mentioned in such a way that the required safety function can be met without mechanical changeover switch.

Dies gelingt erfindungsgemäß dadurch, daß ein mit seiner Kollektor-Emitter-Strecke in Parallelschaltung zu den Eingängen des Leistungsschaltorgans liegender Schalttransistor vorhanden ist, dessen Basisanschluß einerseits über eine Diode mit der als Tastschalter ausgeführten manuell betätigbaren Schaltvorrichtung und andererseits mit einem durch zwei eng benachbarte elektrische Kontakte gebildeten Wasserfühler verbunden ist.This is achieved according to the invention in that a with its collector-emitter path in parallel with the inputs of the power switching device lying switching transistor is present, the base terminal on the one hand via a diode with the manually operated switch device designed as a pushbutton and on the other hand with a closely spaced by two electrical contacts formed water sensor is connected.

Besonders vorteilhaft bei einem solchen Aufbau einer elektrischen Schaltungsanordnung ist, daß sie in identischer Form sowohl für die Öffnungsals auch für die Schließfunktion des zu betätigenden Aggregates verwendbar ist, so daß für die komplette Funktion nur eine Duplizierung dieser grundlegenden Schaltungsanordnung erforderlich ist.Particularly advantageous in such a structure of an electrical circuit arrangement is that it can be used in identical form both for the opening and for the closing function of the unit to be actuated, so that only a duplication of this basic circuit arrangement is required for the complete function.

Weitere besonders günstige Ausgestaltungen des erfindungsgemäßen Gegenstands sind in den Unteransprüchen angegeben und werden anhand des in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.Other particularly favorable embodiments of the subject invention are set forth in the dependent claims and are explained in more detail with reference to the embodiment shown in the drawing.

Da die erfindungsgemäße Schaltungsanordnung, wie bereits erwähnt, in identischer Form sowohl für die Öffnungs- als auch für die Schließfunktion des zu betätigenden Aggregates verwendbar ist, ist sie in der Darstellung nur einmal wiedergegeben und wird beispielhaft als für die Öffnungsfunktion eingesetzt beschrieben. Wie aus der Darstellung ersichtlich, umfaßt die Schaltungsanordnung ein als Mikrocomputer ausgeführtes Steuergerät 3, dessen Eingang 3.11 mit einer manuell betätigbaren Schaltvorrichtung 2 verbunden ist. Die manuell betätigbaren Schaltvorrichtung 2 ist dabei als Tastschalter ausgeführt, bei dessen Betätigung der Eingang 3.11 des Steuergeräts 3 mit dem auch als "Plus" bezeichneten positiven Pol (+) der Bordnetzspannungsquelle verbunden wird. Eine weitere Schaltungsanordnung für die Schließfunktion kann durchaus auf das gleiche Steuergerät 3 zurückgreifen, wozu dieses neben den hier dargestellten noch über weitere Ein- und Ausgänge 3.1 x bzw. 3.2x verfügt, an denen die entsprechenden weiteren Komponenten angeschlossen sind. Ein Ausgang 3.21 des Steuergeräts 3 ist mit dem Basisanschluß eines Schalttransistors 4 verbunden, dessen Emitteranschluß mit dem auch als "Masse" bezeichneten negativen Pol (-) der Bordnetzspannungsquelle und dessen Kollektoranschluß mit einem Eingang 1' des dem zur Verstellung des betreffenden Aggregates vorgesehenen Elektromotor zugeordneten Leistungsschaltorgans 1 verbunden ist. Bei dem Leistungsschaltorgan 1 handelt es sich um ein elektromechanisches Relais, wobei die Eingangsseite desselben durch die Relaisspule gebildet ist. Der andere Eingang 1" des Leistungsschaltorgans 1, d.h. der zweite Anschluß der Relaisspule ist mit Plus, d.h. mit dem positiven Pol (+) der Bordnetzspannungsquelle verbunden.Since the circuit arrangement according to the invention, as already mentioned, can be used in identical form both for the opening and for the closing function of the unit to be actuated, it is shown only once in the illustration and is described by way of example as used for the opening function. As can be seen from the illustration, the circuit arrangement comprises a microcomputer designed as a control unit 3, the input 3.11 is connected to a manually operable switching device 2. The manually operable switching device 2 is designed as a push-button switch, upon actuation of which the input 3.11 of the control device 3 is connected to the positive pole (+) of the vehicle electrical system voltage source, also referred to as "plus". A further circuit arrangement for the closing function can certainly fall back on the same control unit 3, to which this in addition to the one shown here still further inputs and outputs 3.1 x or 3.2x has, where the corresponding other components are connected. An output 3.21 of the control unit 3 is connected to the base terminal of a switching transistor 4, whose emitter terminal with the also referred to as "ground" negative pole (-) of the board supply voltage source and its collector terminal with an input 1 'of the provided for adjusting the unit in question associated electric motor Power switching element 1 is connected. The power switching device 1 is an electromechanical relay, the input side thereof being formed by the relay coil. The other input 1 "of the power switching device 1, that is, the second terminal of the relay coil is connected to positive, ie to the positive pole (+) of the vehicle electrical system voltage source.

Der Normalbetrieb der Schaltungsanordnung sieht so aus, daß über eine Betätigung der manuell betätigbaren Schaltvorrichtung 2 Plus, d.h. ein positives Eingangssignal an den Eingang 3.11 des Steuergerätes 3 angelegt wird, worauf dieses ebenfalls ein positives Ausgangssignal über seinen Ausgang 3.21 an den Schalttransistor 4 abgibt. Der Schalttransistor 4 schaltet durch und bewirkt damit die Bestromung der Relaisspule des Leistungsschaltorgans 1, so daß dieses anzieht und einen Betrieb des zugeordneten Elektromotors in der betreffenden Richtung bewirkt.The normal operation of the circuit arrangement is such that via actuation of the manually operable switching device 2 plus, i. a positive input signal is applied to the input 3.11 of the control unit 3, whereupon this also outputs a positive output signal via its output 3.21 to the switching transistor 4. The switching transistor 4 turns on and thus causes the energization of the relay coil of the power switching element 1, so that this attracts and causes operation of the associated electric motor in the relevant direction.

Anders verhält es sich bei einem Notbetrieb, der z.B. dann erforderlich sein kann, wenn ein Fahrzeug etwa durch einen Unfall in ein insbesondere salzhaltiges Gewässer eintaucht, wodurch i.a. ein sofortiges Versagen des Steuergeräts 3 verursacht ist. Zunächst muß in diesem Falle sichergestellt sein, daß keine ungewollte Aktivierung des Leistungsschaltorgans 1 erfolgt. Dies geschieht durch den Schalttransistor 6, dessen Kollektor-Emitter-Strecke in Parallelschaltung zu den Eingängen 1', 1" des Leistungsschaltorgans 1 liegt und der im durchgeschalteten Zustand letzteres kurzschließt. Um dieses Durchschalten zu bewirken ist der Basisanschluß des Transistors 6 mit einem durch zwei eng benachbarte elektrische Kontakte 8', 8" gebildeten Wasserfühler 8 verbunden. Zwischen den Kontakten 8' und 8" bildet sich durch die Leitfähigkeit insbesondere des salzhaltigen Wassers ein Widerstand aus, der zumindest so gering ist, daß ein Durchschalten des Transistors 6 sicher gewährleistet ist. Die Kontakte 8', 8" können durch benachbarte Flächen auf der Leiterplatte oder besser noch durch parallel ausgerichtete Stifte gebildet sein. Eine Ausführung mit Stiften kann dabei vorteilhaft so ausgeführt sein, daß diese auf die Außenseite eines Gehäuses geführt sind und somit noch vor der übrigen Schaltungsanordnung mit dem Wasser in Berührung kommen.The situation is different with an emergency operation, which may be necessary, for example, when a vehicle is immersed in an especially salty water, for example due to an accident, as a result of which ia an immediate failure of the control unit 3 is caused. First, it must be ensured in this case that no unwanted activation of the power switching device 1 takes place. This is done by the switching transistor 6 whose collector-emitter path is connected in parallel with the inputs 1 ', 1 "of the power switching element 1 and short circuits the latter in the switched-through state closely adjacent electrical contacts 8 ', 8 "formed water sensor 8 connected. Between the contacts 8 'and 8 "is formed by the conductivity in particular of the saline water, a resistance which is at least so low that a turn-on of the transistor 6 is reliably ensured., The contacts 8', 8" can by adjacent surfaces on the Printed circuit board or better still be formed by parallel aligned pins. An embodiment with pins can advantageously be designed so that they are guided on the outside of a housing and thus come into contact with the water before the other circuitry.

Eine absichtliche Aktivierung des Leistungsschaltorgans 1 durch die Betätigung der Schalteinrichtung 2 ist dadurch möglich, daß diese einerseits direkt mit der Basis des Schalttransistors 5 sowie über eine Diode 7 mit der Basis des Schalttransistors 6 verbunden ist. Bei einer Betätigung der Schalteinrichtung 2 werden diese beiden mit Plus verbunden, wodurch der in Parallelschaltung zu den Eingängen 1', 1" des Leistungsschaltorgans 1 liegende Transistor 6 gesperrt und der in Reihenschaltung mit dem Leistungsschaltorgan 1 liegende Transistor 5 nach Masse hin durchgeschaltet, so daß die Relaisspule bestromt wird. Der in Reihe mit diesem Transistor 5 liegende weitere Transistor 9 dient lediglich dazu diesen Aktivierungspfad im Normalbetrieb zu unterbinden, indem dieser dann durch das Steuergerät 3 gesperrt wird. Beim Ausfall des Steuergeräts 3 ist der Transistor 9 durch den Pull-Up Widerstand 10 durchgeschaltet und ermöglicht den Stromfluß nach Masse und damit den Notbetrieb. Durch eine Schottky-Diode 11 ist die Basis des im Normalbetrieb die Einschaltung des Relaisspulenstroms bewirkenden Transistors 4 zusätzlich mit dem Kollektoranschluß des Transistors 9 verbunden. Hierdurch ist verhindert, daß eine unbeabsichtigte Schaltung des Transistors 4 durch einen seine Basis möglicherweise nach Plus hin kurzschließenden Wasserwiderstand erfolgen kann.An intentional activation of the power switching element 1 by the operation of the switching device 2 is possible in that this is on the one hand connected directly to the base of the switching transistor 5 and via a diode 7 to the base of the switching transistor 6. Upon actuation of the switching device 2, these two are connected to positive, whereby the transistor 6 is connected in parallel to the inputs 1 ', 1 "of the power switching element 1 locked and connected in series with the power switching device 1 transistor 5 to ground through, so that The further transistor 9 connected in series with this transistor 5 merely serves to suppress this activation path during normal operation, in that case it is blocked by the control unit 3. When the control unit 3 fails, the transistor 9 is activated by the pull-up By means of a Schottky diode 11, the base of the transistor 4 which effects the switching on of the relay coil current in normal operation is additionally connected to the collector terminal of the transistor 9. This prevents inadvertent switching of the Transisto rs 4 can be done by its base possibly short-circuiting water resistance to plus.

Claims (5)

  1. Electrical circuit arrangement for influencing a power switching member (1) allocated on the output end to an electromotor provided for adjusting a structural component located in a motor vehicle, the power switching member (1) being connected at the input end to the positive pole (+) of the on-board network voltage source on the one hand, and on the other hand intended to be connected to the negative pole (-) of the on-board network voltage source by means of a manually actuated operating device (2) and by means of a first switching transistor (4) controlled by an electronic control unit (3), and also by means of a second switching transistor (5) actuated directly by the operating device (2) characterised in that a third switching transistor (6) is provided which lies with its collector emitter section connected in parallel to the inputs (1', 1 ") of the power switching member (1) and whose base terminal is connected by means of a diode (7) to the manually actuated operating device (2) designed as a momentary-contact switch on the one hand, and to a water sensor (8) formed by two electrical contacts (8', 8") closely adjacent to each other, on the other hand.
  2. Electrical circuit arrangement in accordance with Claim 1, characterised in that a further transistor (9) is located between the switching transistor (5) directly actuated by the operating device (2) and the negative pole (-) of the on-board network voltage source, whose base terminal is connected by way of a pull-up resistor (10) to the positive pole (+) of the on-board network voltage source on the one hand, and by means of the control unit (3) to the negative pole (-) of the on-board network voltage source on the other hand.
  3. Electrical circuit arrangement in accordance with Claim 2, characterised in that the base terminal of the switching transistor (4) provided for activating the power switching member (1) by way of the electronic control unit (3) is additionally connected to the collector terminal of the further transistor (9).
  4. Electrical circuit arrangement in accordance with any of Claims 1 to 3, characterised in that the power switching member (1) is designed as an electro-mechanical relay.
  5. Electrical circuit arrangement in accordance with any of Claims 1 to 4, characterised in that the electronic control unit (3) is a microcontroller.
EP20050701384 2004-02-14 2005-02-09 Electric circuit arrangement Not-in-force EP1713997B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004007328A DE102004007328A1 (en) 2004-02-14 2004-02-14 Electrical circuit arrangement
PCT/EP2005/001274 WO2005078223A1 (en) 2004-02-14 2005-02-09 Electric circuit arrangement

Publications (2)

Publication Number Publication Date
EP1713997A1 EP1713997A1 (en) 2006-10-25
EP1713997B1 true EP1713997B1 (en) 2010-09-15

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EP20050701384 Not-in-force EP1713997B1 (en) 2004-02-14 2005-02-09 Electric circuit arrangement

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US (1) US7282817B2 (en)
EP (1) EP1713997B1 (en)
JP (1) JP2007522988A (en)
CN (1) CN1918353B (en)
AT (1) ATE481546T1 (en)
DE (2) DE102004007328A1 (en)
ES (1) ES2354478T3 (en)
WO (1) WO2005078223A1 (en)

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Publication number Publication date
ES2354478T3 (en) 2011-03-15
CN1918353A (en) 2007-02-21
CN1918353B (en) 2012-06-27
WO2005078223A1 (en) 2005-08-25
JP2007522988A (en) 2007-08-16
DE502005010260D1 (en) 2010-10-28
US20060284486A1 (en) 2006-12-21
EP1713997A1 (en) 2006-10-25
US7282817B2 (en) 2007-10-16
DE102004007328A1 (en) 2005-09-01
ATE481546T1 (en) 2010-10-15

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