WO2014005663A1 - Procédé d'utilisation d'un système de sécurité pour une automobile et système de sécurité - Google Patents

Procédé d'utilisation d'un système de sécurité pour une automobile et système de sécurité Download PDF

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Publication number
WO2014005663A1
WO2014005663A1 PCT/EP2013/001553 EP2013001553W WO2014005663A1 WO 2014005663 A1 WO2014005663 A1 WO 2014005663A1 EP 2013001553 W EP2013001553 W EP 2013001553W WO 2014005663 A1 WO2014005663 A1 WO 2014005663A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor vehicle
signal
control unit
collision
control units
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.)
Ceased
Application number
PCT/EP2013/001553
Other languages
German (de)
English (en)
Inventor
Michael Stadler
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.)
Audi AG
Original Assignee
Audi AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Audi AG filed Critical Audi AG
Publication of WO2014005663A1 publication Critical patent/WO2014005663A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
    • B60K28/10—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle 
    • B60K28/14—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle  responsive to accident or emergency, e.g. deceleration, tilt of vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
    • B60K2028/006—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions disconnecting the electric power supply, e.g. the vehicle battery

Definitions

  • the invention relates to a method for operating a safety system for a motor vehicle and a safety system for a motor vehicle.
  • DE 10 2006 007 960 A1 discloses a safety system for a motor vehicle, in which an airbag control unit is connected via a control line or a bus system to a motor control. Upon detection of an accident event, such as a collision, the airbag control unit outputs an accident alert signal to the bus system or control line. The bus system or the control line transmits this accident warning signal to the engine control. The detection of the accident warning signal by a sensor device of the engine control then causes a reduction in the operating voltage provided at a drive motor or an interruption of the power supply of the drive motor.
  • DE 197 47 708 A1 shows a safety device for preventing the triggering of at least one airbag.
  • An essential part of the safety device is an emergency switch arrangement, by which at least one belonging to an airbag control system line or line arrangement can be interrupted and / or switched to transmit an off signal to an airbag control unit.
  • a trigger signal supplied by at least one crash sensor is not only used for selectively activating an airbag or a group of airbags, but at the same time triggers the permanent deactivation of the unillustrated airbags.
  • EP 0 791 942 A2 discloses a safety system for a motor vehicle, in which motor electronics are connected via a load line parallel to a battery line via a circuit breaker to an energy store. After an accident, the circuit breaker, for example triggered by an airbag control unit and disconnects the battery line from the energy storage.
  • A1 shows a safety system for a motor vehicle with a high-voltage system.
  • a sensor serves to provide a sensor signal and a control device for switching off the high-voltage system in response to the sensor signal.
  • the sensors and the control unit are used exclusively for switching off the high-voltage system in the motor vehicle.
  • An inventive method for operating a security system for a motor vehicle comprises the following steps:
  • control unit-specific predefined time intervals can be specified within which the signal must be received or detected Before deactivation of the control device occurs, unwanted deactivations of control devices can be prevented In particular, a longer time period can be predetermined for those control devices which are necessary for driving the motor vehicle ground than with less critical ECUs. An unwanted lying of the motor vehicle is thereby safely prevented.
  • the collision detection device comprises an airbag control unit, wherein the signal is emitted by the airbag control unit.
  • the airbag control unit has the important task of triggering the airbags in time and tighten the belt tensioners at the right moment.
  • the airbag control unit is connected to sensors which send a signal to the airbag control unit in the event of an impact.
  • sensors are also installed directly in the airbag control unit, which also collect data and are relevant for triggering.
  • control unit-specific predetermined time periods are predetermined in dependence on a respective hazard potential of be switched off in a collision of the motor vehicle functions of the respective control units.
  • a respective hazard potential of be switched off in a collision of the motor vehicle functions of the respective control units For example, in such control devices, through their further operation after a collision of the motor vehicle, an increased risk, for example in the form of a fire or the like, provided with a shorter period of time than such control devices, in which in the event of a collision of the motor vehicle and their further Be - drove a lower risk potential exists.
  • one of the control units is an engine control unit, to which the signals are emitted and by means of which a fuel supply of an engine of the motor vehicle is interrupted as soon as the signal within a motor control unit specific predetermined time from the engine control unit received and this was turned off. In the event of a collision of the motor vehicle thereby the risk of fire due to escaping fuel is prevented.
  • an engine control unit-specific time period is selected such that a maximum amount of fuel that can be provided within this time period falls below a predetermined value.
  • the engine control unit-specific time span can thus be selected to be at least large enough that a critical amount of fuel would not escape in the event of a collision, since the engine control unit would previously be deactivated and thus the fuel supply would be interrupted. Due to the correspondingly selectable time span, the probability of a false triggering, that is to say a deactivation of the engine control unit, can be minimized, the deactivation being provided despite, for example, a break in the bus line, which leads to a greater robustness of the function.
  • one of the control units is a high-voltage control unit, to which the signals are sent cyclically and by means of which a power supply of a high-voltage system of the motor vehicle is interrupted as soon as the signal is not received within a cryvolt discipline experts in the environment of the motor vehicle are thus safely protected, since the high-voltage system is interrupted in this case.
  • the signals are transmitted via a Flexray and / or a CAN bus of the bus system or another bus system to the control units. It is thus used in the car existing infrastructure for signaling, so that no additional connections between the individual control units are required for the security system.
  • An inventive safety system for a motor vehicle comprises a collision detection device, which is designed to send a signal cyclically via a bus system of the motor vehicle to a plurality of control units of the motor vehicle, as long as the collision detection device not at least one collision of the motor vehicle with a strength above a predetermined Threshold was detected, and a monitoring device which is adapted to monitor whether the signal is received by the respective control devices within respective ECU specific predetermined periods of time and to deactivate those control devices in which the signal was not received within the predetermined time period.
  • the safety system comprises means with which the method steps can be carried out.
  • the sole FIGURE shows a motor vehicle with a safety system, which comprises a collision detection device, which is connected via lines of a bus system of the motor vehicle with respective control devices.
  • a schematic representation of a motor vehicle 10 is shown in the single figure.
  • the motor vehicle 10 includes a safety system 12, which has a collision detection device 14, an engine control unit 16 and a high-voltage control unit 18.
  • the collision detection device 14 comprises an airbag control unit 20, wherein the engine control unit 16 and the high-voltage control unit 18 each have a monitoring unit 22, 24.
  • the collision detection device 14 and the airbag control unit 20 are connected via an unspecified bus system of the motor vehicle 10 to the engine control unit 16 and the high-voltage control unit 18.
  • the collision detection device 14 or the airbag control unit 20 are designed to transmit a signal cyclically via the bus system of the motor vehicle 10 to the engine control unit 16 and the high-voltage control unit 18, as long as the collision detection device 14 or the airbag control unit 20 at least a collision of the motor vehicle 10 having a magnitude above a predetermined threshold has been detected.
  • the signals are transmitted via a Flexray and / or a CAN bus of the bus system or, for example, via LIN, MOST or other bus systems to the respective control units 16, 18.
  • the safety system 12 may moreover include a plurality of further, not shown here, control devices of the motor vehicle 10, which may also be connected via the bus system with the collision detection device 14 and the airbag control unit 20.
  • the safety system 12 serves to deactivate in particular critical functions of the motor vehicle 10 in the event of a collision in a crash or in a corresponding collision of the motor vehicle 10 with other objects by timely deactivating the corresponding control units 16, 18 or other control devices.
  • the following is a procedure for Operating the safety system 12 for the motor vehicle 0 explained.
  • the airbag control unit 20 cyclically sends a signal via the bus system of the motor vehicle 10 to the engine control unit 16 and the high-voltage control unit 18 as long as at least one collision of the motor vehicle 10 with a magnitude above a predetermined threshold value has been detected by the airbag control unit 20.
  • different collision types can be predetermined, for example a frontal impact, a side impact, a rear impact, a rollover or the like, for which different threshold values are predefined, for example in the form of force or acceleration values. It may also be provided that for different types of collision different control devices of the motor vehicle 10 are supplied earlier or later no longer with the signal.
  • the monitoring units 22 and 24 is continuously monitored whether the signal from the respective control units 16, 18 is received within respective control unit specific predetermined periods.
  • the monitoring units 22, 24 deactivate those control units 16, 18 in which the signal was not received within the respective predetermined period of time.
  • the airbag control unit 20 stops the transmission of the signal, whereby the control units 16, 18 is signaled that a crash has occurred, after which the respective control units 16, 18 be switched off.
  • a crash message is also sent to the control units 16, 18 in the event of a detected accident or a corresponding collision, which likewise causes a deactivation of the control units 16, 18.
  • the monitoring of the cyclically transmitted signals is thus an additional solution in order to provide a redundant safety precaution in the event of a non-portability of the crash signal, so that the control devices 16, 18 are reliably deactivated even in such a case.
  • the control unit-specific predetermined periods of time can be specified depending on a respective hazard potential of in a collision of the motor vehicle 10 functions to be shut off the respective control units 16, 18.
  • the engine control unit-specific period of time for the engine control unit 16 is selected such that a maximum amount of fuel that can be provided within this time period falls below a predetermined value.
  • this fuel quantity it can , for example, a leakage amount of 5x10 "4 I, with a corresponding motor control unit specific period of time could be set for example to up to 2 seconds.
  • the motor control device-specific period of time, wherein the maximum suppliable amount of fuel still below the superiors specified value of course the motor vehicle-specific, in particular depend It depends on what kind of engine is installed in the motor vehicle 10.
  • the high-voltage control unit 18 can be deactivated so that a voltage supply of a high-voltage system of the motor vehicle 10, not shown here, is interrupted. In the event of a collision, this ensures that vehicle occupants or helpers who free the vehicle occupants from the motor vehicle 10 are not endangered by the high-voltage system.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Air Bags (AREA)

Abstract

L'invention concerne un procédé d'utilisation d'un système de sécurité (12) pour une automobile (10), comprenant les étapes suivantes : émission cyclique d'un signal par un dispositif de détection de collision (14) par le biais d'un système de bus de l'automobile (10) à destination d'une pluralité de contrôleurs (16, 18) de l'automobile (10) tant qu'au moins une collision de l'automobile (10) ayant une intensité supérieure à une valeur seuil prédéfinie n'a pas été détectée par le dispositif de détection de collision (14) ; surveillance de la réception du signal par les contrôleurs (16, 18) respectifs dans des intervalles de temps prédéfinis spécifiques à chaque contrôleur ; désactivation des contrôleurs (16, 18) qui n'ont pas reçu le signal dans l'intervalle de temps respectivement prédéfini. L'invention concerne en outre un système de sécurité (12) pour une automobile (10).
PCT/EP2013/001553 2012-07-06 2013-05-25 Procédé d'utilisation d'un système de sécurité pour une automobile et système de sécurité Ceased WO2014005663A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012013502.5 2012-07-06
DE102012013502A DE102012013502B3 (de) 2012-07-06 2012-07-06 Verfahren zum Betreiben eines Sicherheitssystems für einen Kraftwagen und Sicherheitssystem

Publications (1)

Publication Number Publication Date
WO2014005663A1 true WO2014005663A1 (fr) 2014-01-09

Family

ID=48534318

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/001553 Ceased WO2014005663A1 (fr) 2012-07-06 2013-05-25 Procédé d'utilisation d'un système de sécurité pour une automobile et système de sécurité

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DE (1) DE102012013502B3 (fr)
WO (1) WO2014005663A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015207222A1 (de) 2015-04-21 2016-10-27 Volkswagen Aktiengesellschaft Verfahren und Vorrichtung für ein Hochvolt-Energiesystem eines Fahrzeugs
DE102023120510A1 (de) * 2023-08-02 2025-02-06 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Sicherheitsabschaltung wenigstens eines elektrischen Geräts eines Fahrzeugs

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0583157A2 (fr) * 1992-08-10 1994-02-16 Fujikura Ltd. Dispositif de sécurité pour réservoir de combustible
EP0745514A1 (fr) * 1995-05-29 1996-12-04 MAGNETI MARELLI S.p.A. Un réseau de commande local pour l'utilisation dans des véhicules à moteur
EP0791942A2 (fr) 1996-02-21 1997-08-27 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Circuit électrique pour véhicule à moteur
DE19747708A1 (de) 1997-09-19 1999-03-25 Volkswagen Ag Sicherheitseinrichtung
US20020103590A1 (en) * 2001-01-31 2002-08-01 Schondorf Steven Yellin Restraint and fuel system cutoff control module
DE102006007960A1 (de) 2006-02-21 2007-09-06 Volkswagen Ag Fahrzeugmotor-Steuervorrichtung für einen Elektro-Fahrzeugmotor
DE102009039913A1 (de) 2009-09-03 2010-06-24 Daimler Ag Kraftfahrzeug mit automatischer Abschaltung des Hochvoltsystems

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009051293A1 (de) * 2009-10-29 2011-05-05 Bayerische Motoren Werke Aktiengesellschaft Schaltungsanordnung zum Trennen einer Spannungsquelle von einem elektrischen Energienetz eines Fahrzeugs

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0583157A2 (fr) * 1992-08-10 1994-02-16 Fujikura Ltd. Dispositif de sécurité pour réservoir de combustible
EP0745514A1 (fr) * 1995-05-29 1996-12-04 MAGNETI MARELLI S.p.A. Un réseau de commande local pour l'utilisation dans des véhicules à moteur
EP0791942A2 (fr) 1996-02-21 1997-08-27 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Circuit électrique pour véhicule à moteur
DE19747708A1 (de) 1997-09-19 1999-03-25 Volkswagen Ag Sicherheitseinrichtung
US20020103590A1 (en) * 2001-01-31 2002-08-01 Schondorf Steven Yellin Restraint and fuel system cutoff control module
DE102006007960A1 (de) 2006-02-21 2007-09-06 Volkswagen Ag Fahrzeugmotor-Steuervorrichtung für einen Elektro-Fahrzeugmotor
DE102009039913A1 (de) 2009-09-03 2010-06-24 Daimler Ag Kraftfahrzeug mit automatischer Abschaltung des Hochvoltsystems

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