EP0562277B1 - Verfahren zum Steuern einer Zentralverriegelungsanlage und Zentralverriegelungsanlage - Google Patents

Verfahren zum Steuern einer Zentralverriegelungsanlage und Zentralverriegelungsanlage Download PDF

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Publication number
EP0562277B1
EP0562277B1 EP93102591A EP93102591A EP0562277B1 EP 0562277 B1 EP0562277 B1 EP 0562277B1 EP 93102591 A EP93102591 A EP 93102591A EP 93102591 A EP93102591 A EP 93102591A EP 0562277 B1 EP0562277 B1 EP 0562277B1
Authority
EP
European Patent Office
Prior art keywords
pressure
signal
pump
switching
switch
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
EP93102591A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0562277A1 (de
Inventor
Armin Dipl.-Ing. Kleinmann
Klaus Dipl.-Ing. Kiefer
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.)
Robert Bosch GmbH
Daimler Benz AG
Original Assignee
Robert Bosch GmbH
Daimler Benz AG
Mercedes Benz AG
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Filing date
Publication date
Application filed by Robert Bosch GmbH, Daimler Benz AG, Mercedes Benz AG filed Critical Robert Bosch GmbH
Publication of EP0562277A1 publication Critical patent/EP0562277A1/de
Application granted granted Critical
Publication of EP0562277B1 publication Critical patent/EP0562277B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E05B77/50—Locking several wings simultaneously by pneumatic or hydraulic means

Definitions

  • the invention relates to a method for controlling a central locking system with the features of the preamble of claim 1 and to a central locking system with the generic features of the independent patent claim 5, which is particularly suitable for carrying out the method.
  • ZVA central locking system
  • DE 32 43 411 C2 European Patent Application Laidiol
  • an electric motor driven bi-pressure air pump both locking actuators for door and flap locks of the ZVA, which are assigned to a ZV branch of the system, as well as other air pressure consumers supplied, e.g. B. inflatable seat back cushions and a pressure buffer tank in a comfort branch of the system.
  • comfort consumers e.g. B. inflatable seat back cushions and a pressure buffer tank in a comfort branch of the system.
  • comfort consumers stands here and in the following as an abbreviation for "central locking".
  • the two system branches mentioned can alternately be connected to the pump outlet by means of a switching valve - which, depending on the direction of rotation of the pump, supplies the pressure types positive or negative pressure; depending on the location of the pressure request - comfort or ZV branch - switched, with the ZV branch usually enjoying priority because of its safety relevance.
  • a ZV pressure switch is provided in the ZV branch, which is used for the automatic end shutdown of the pump after completion of an unlocking or locking process, but otherwise has no further monitoring function.
  • the comfort branch of the system also includes a pressure switch or pressure monitoring switch, the main task of which is to maintain the pressure level prescribed in this branch by, if necessary, electrically activating the pump and the associated switching valve.
  • this known ZVA also includes a pneumatic line branch (comfort branch) for connecting at least one inflatable cushion to the pump of the ZVA; In this line branch too, a pressure switch is electrically connected to the central control circuit.
  • a central locking of the closures can be carried out during vehicle operation, although the driver does not want this.
  • the object of the invention is to provide, starting from a generic method for controlling a central locking system, those method steps with which an undesired ZV actuation of the types mentioned above can be counteracted, and to make a generic central locking system safer against such undesirable or incorrect actuations.
  • the pressure switch which is present anyway for switching off the pump after each ZVA operating cycle, is now also used for the detection of unauthorized and / or unwanted pressure build-up or reduction on the closure adjusting elements in addition to its limit switch function. From the knowledge that its switching signal is generated only in connection with an activation of the pump by a signal from a control switch, which is used by vehicle users to unlock and lock the locks z. B. is operated directly manually (internal switch) or by means of a locking cylinder or an internal locking button, it was deduced that a response of the pressure switch without connection with a signal from the control switch can only go back to an undesirable pressure or vacuum introduction. In this case, preferably depending on the response direction of the pressure switch, a corresponding opposite activation of the pump can restore the previously set (locking or unlocking) state.
  • An anti-theft device of the vehicle can be effectively supported with this control method.
  • an unlocking overpressure at any point of the ZVA piping system is automatically counteracted by the pump is switched on in this case for generating negative pressure (or for generating positive pressure if negative pressure is used for unlocking).
  • Modern ZVA are controlled by a central control circuit, to which the input signals from various control and pressure cut-offs are fed and which controls the operation of the ZVA depending on their input signals, e.g. B. by driving the pump and switching valves etc.
  • This central control circuit regularly includes a programmable microprocessor. This simplifies the implementation of the method described here, since the logical comparison operations required for this can be represented purely in software by appropriate programming.
  • a device for performing the method can also be implemented with discrete electronic components, that is to say logic gates, memory circuits, etc.
  • the single figure shows a schematic circuit diagram of a central locking system with which the method can be carried out.
  • a central locking system comprises, according to the figure, a central control circuit (hereinafter ZS for short) 1 with its own power supply from the vehicle electrical system of a vehicle, not shown, which via an input EV (locking input) signals from control switches 2 connected in parallel and via an input EE (Input unlocking) signals from control switches 3 which are also connected in parallel to one another can be fed.
  • ZS central control circuit
  • control switches 2 If one of the control switches 2 is actuated - for. B. by locking the vehicle from the outside by means of a locking cylinder, to which one of the control switches 2 and 3 is assigned -, the ZS 1 switches on a reversible electric motor 4 for operating a bi-pressure pump 5 for generating negative pressure. This then evacuates a ZV line system 6, to which the working chambers of closure actuating elements, not shown, and also a ZV pressure switch 7 are connected in the usual manner. The connected control elements are then switched from their unlocked to their locked position. If, on the other hand, one of the control switches 3 is actuated - for. B.
  • the ZVA can be controlled from several locking points, each with control switches 2 and / or 3, in particular on the driver's door, passenger door and boot lid (multi-point operation), but only two control inputs EE and EV are required for any number of control points on the ZS 1 are.
  • the bistable closure actuating elements can only be moved if a type of pressure acts on them, which of those who created the current state works in the opposite direction. If the closure actuating elements are repeatedly subjected to the same type of pressure, their position does not change during repetitions. In an appropriately designed system, it would of course also be possible to apply vacuum to adjust the unlocking and pressurize to adjust the locking.
  • the ZV pressure switch 7 is electrically connected to the ZS 1; it responds in the usual way to both underpressure and overpressure in the ZV line system 6 when the respective pressure level falls below or exceeds a certain threshold value, and then generates a signal corresponding to the respectively detected pressure type, which is normally used to switch off the Pump 5 or the electric motor 4 leads.
  • the threshold values of the pressure levels mentioned are usually selected such that the closure adjusting elements have been changed over safely before the ZV pressure switch 7 responds.
  • a switchable valve 8 here designed as a 3/2-way solenoid valve which is resiliently returned to a rest position and which is electrically operated by a signal from the ZS 1 from the rest position - ZV line system connected to the pump - can be switched into a switching position connecting a comfort branch 9 of the system with the pump 5.
  • Such multiple uses of a pump are widely known; it can be - as outlined here - negative pressure secondary branches as well as positive pressure secondary branches; If both types of secondary branches are present at the same time, then these are to be separated from each other via a non-return valve - only permeable to the required type of pressure - behind the switchable valve 8 in the comfort branch 9; of course could a switchable branch valve can also be provided for each branch.
  • the comfort branch serves to provide pressure-level-dependent support by the electrically operable pump 5 in a vacuum supply system, which is normally evacuated by the intake manifold vacuum of the vehicle's internal combustion engine.
  • a check valve 10 is connected in series with the switchable valve 8 in the comfort branch 9, which prevents undesired ventilation of the comfort branch when the switchable valve 8 is switched over.
  • the comfort branch 9 is equipped in a known manner with a pressure monitor device 11 which is electrically connected to the ZS 1 and which generates a request signal to the ZS 1 when the pressure in the comfort branch rises above a predetermined threshold value.
  • the threshold is determined by the vacuum level at which the consumers connected here, e.g. B. single-acting actuators for the flap control of an automatic climate control, can no longer be operated safely. It goes without saying that corresponding devices can also be provided for a secondary branch of the system which can be operated with excess pressure.
  • a connection for an operating switch Zü is also indicated as a further input of the ZS 1.
  • the vacuum support from the pump can only be guaranteed when the internal combustion engine is not running (the operating switch is then regularly open), but it can also be provided that signals from the pressure monitor device are only sent to the above-mentioned device when the vehicle is in operation (operating switch closed) Start pump 5.
  • This check can be carried out, for example, on the basis of a position feedback, which is supplied by one or all of the closures or closure actuating elements of the ZS 1 in the form of an electrical signal. But it can also, for. B. the response direction of the ZV pressure switch 7 when the pump is last switched off. If this was the opposite of the new signal of this switch, which occurs without a control switch signal, the initial state must be restored by switching on the pump.
  • the ZV line system 6 has been or will be subjected to a type of pressure which works in the opposite direction to that which has brought about the actual state - that is, for example, negative pressure was applied in the present unlocked state or positive pressure was built up in the present locked state, it can now again due to a logical combination of the electrical input signals of the ZS 1 or its microprocessor of this undesired exposure can be counteracted by switching the switchable valve 8 to its rest position and switching on the pump 5 or its electric motor 4 in the sense that the previously set state of the closure adjusting elements is restored. This is ultimately confirmed by a renewed signal from the ZV pressure switch 7.
  • this device can not only prevent a possible malfunction of the valve 7, but also - and regardless of the presence of a comfort branch of the system - an unauthorized introduction, in particular of a type of pressure into the ZV line system, which leads to an unlocking the locked closures should lead.
  • the ZV pressure switch can be given an additional switching point in addition to its usual switching point that can be reached after the ZV adjusting elements have been changed (end stop of the pump), especially for its pressure switch function, or it can include a corresponding device with such a switching point that is earlier, i.e. is reached before or at the same time as the actuating elements respond. This switching point is then disregarded for the final shutdown. H. in normal operation of the ZVA, it is simply run over without triggering a switching effect.
  • the ZV pressure switch being a component, in particular as a sensor, of a vehicle.
  • Theft protection can be seen.

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  • Lock And Its Accessories (AREA)
EP93102591A 1992-03-25 1993-02-19 Verfahren zum Steuern einer Zentralverriegelungsanlage und Zentralverriegelungsanlage Expired - Lifetime EP0562277B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4209598A DE4209598C1 (ja) 1992-03-25 1992-03-25
DE4209598 1992-03-25

Publications (2)

Publication Number Publication Date
EP0562277A1 EP0562277A1 (de) 1993-09-29
EP0562277B1 true EP0562277B1 (de) 1995-04-12

Family

ID=6454925

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93102591A Expired - Lifetime EP0562277B1 (de) 1992-03-25 1993-02-19 Verfahren zum Steuern einer Zentralverriegelungsanlage und Zentralverriegelungsanlage

Country Status (4)

Country Link
EP (1) EP0562277B1 (ja)
CZ (1) CZ39893A3 (ja)
DE (2) DE4209598C1 (ja)
ES (1) ES2073313T3 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19705419C2 (de) * 1997-02-13 2000-08-31 Daimler Chrysler Ag Pneumatikstellelement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735119C2 (de) * 1977-08-04 1986-06-05 Daimler-Benz Ag, 7000 Stuttgart Vorrichtung zur Steuerung des Betriebszustandes einer elektrisch betriebenen Unterdruckpumpe eines Kraftfahrzeuges
DE3243411C2 (de) * 1982-11-24 1985-12-12 Daimler-Benz Ag, 7000 Stuttgart Pneumatische Zentralverriegelungsanlage für die Türen, Klappen oder dergleichen eines Kraftfahrzeuges
DE3400945A1 (de) * 1984-01-13 1985-07-25 Robert Bosch Gmbh, 7000 Stuttgart Zentralverriegelungsanlage eines kraftfahrzeugs
DE3717515A1 (de) * 1986-06-03 1987-12-10 Volkswagen Ag Pneumatische zentralverriegelung fuer ein kraftfahrzeug
DE3641276A1 (de) * 1986-12-03 1988-06-16 Vdo Schindling Anordnung zur steuerung eines drehrichtungsumkehrbaren elektrischen antriebs einer bidruckpumpe in einem pneumatischen system einer zentralverriegelungsanlage eines kraftfahrzeugs
DE3929843A1 (de) * 1989-09-08 1991-03-14 Vdo Schindling Verfahren zum betaetigen einer zentralverriegelungsanlage und zentralverriegelungsanlage zu seiner durchfuehrung

Also Published As

Publication number Publication date
ES2073313T3 (es) 1995-08-01
CZ39893A3 (en) 1993-10-13
EP0562277A1 (de) 1993-09-29
DE59300130D1 (de) 1995-05-18
DE4209598C1 (ja) 1993-05-06

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