EP1735190A2 - Control device for controlling person-protecting means - Google Patents

Control device for controlling person-protecting means

Info

Publication number
EP1735190A2
EP1735190A2 EP05716592A EP05716592A EP1735190A2 EP 1735190 A2 EP1735190 A2 EP 1735190A2 EP 05716592 A EP05716592 A EP 05716592A EP 05716592 A EP05716592 A EP 05716592A EP 1735190 A2 EP1735190 A2 EP 1735190A2
Authority
EP
European Patent Office
Prior art keywords
vehicle
processor
location
sensors
sensor
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
EP05716592A
Other languages
German (de)
French (fr)
Inventor
Alfred Kuttenberger
Matthias Wellhoefer
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
Original Assignee
Robert Bosch GmbH
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
Family has litigation
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Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1735190A2 publication Critical patent/EP1735190A2/en
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/017—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including arrangements for providing electric power to safety arrangements or their actuating means, e.g. to pyrotechnic fuses or electro-mechanic valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/0104—Communication circuits for data transmission
    • B60R2021/01047—Architecture
    • B60R2021/01054—Bus
    • B60R2021/01068—Bus between different sensors and airbag control unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/0104—Communication circuits for data transmission
    • B60R2021/01047—Architecture
    • B60R2021/01054—Bus
    • B60R2021/01075—Bus between the airbag control unit and pyrotechnic fuses or equivalent actuators

Definitions

  • the invention relates to a device for controlling personal protection devices according to the type of the independent claim.
  • the device according to the invention for controlling personal protection devices in a vehicle with the features of the independent claim has the advantage that the inertial sensors, the processor and the ignition circuit control are each arranged at different locations in the vehicle. These places are so different that they are not close to each other.
  • This has the advantage that the processor with its periphery, which makes up the control unit, can be placed freely in the vehicle this time without sensors, without having to go into the need for inertial sensors. In particular, it is no longer necessary to arrange the control unit on the vehicle tunnel, where only the inertial sensor system now has to be arranged.
  • Inertial sensors include acceleration sensors in various spatial directions, which can be arranged, for example, in the vehicle's longitudinal, transverse and vertical directions, but also at an angle to these axes. Furthermore, the inertial sensor system includes detection of rotary movements, such as rotational acceleration or rotation rate sensors. However, it is also possible for the inertial sensor system to be distributed on the periphery of the vehicle is arranged, with the periphery A, B, C pillars of the grille, etc. count. The inertial sensor system can also be attached centrally to an end wall, for example of the engine compartment-passenger compartment partition. The advantage is that, on the one hand, the sensors are mounted in the extension of the longitudinal axis of the vehicle and even detect higher signals, since they are closer to a crash event if the crash event occurs
  • the location where the inertial sensors are located is the vehicle tunnel or the B-pillars. Both are places that enable optimal sensation. There is a very central position on the vehicle tunnel, while the B-pillars are close to a side crash, but in particular a front crash can also be detected here if sensors are also used which sense not only in the vehicle transverse direction but also in the vehicle longitudinal direction. This can also be supplemented by upfront sensors, i.e. those sensors that are attached to the radiator grille in the front of the vehicle.
  • the location at which the processor and also the ignition circuit arrangement are arranged can be the trunk, the instrument panel under a vehicle seat or in a vehicle seat the vehicle roof or the engine compartment.
  • the processor can preferably be mounted on a plug-in card, so that it can be easily replaced in a maintenance cycle.
  • the processor can also advantageously be a central computer for the vehicle, which, in addition to controlling personal protection means, also performs other tasks, such as
  • the processor can be connected to the inertial sensor system and also to the ignition circuit control via a bus. Alternatively, two-wire connections that represent point-to-point connections can also be used.
  • the inertial sensor system has a signal pre-evaluation.
  • This signal pre-evaluation already relieves the processor of a few tasks, so that the process in the processor is accelerated.
  • Such signal preprocessing tasks are e.g. B. filtering, clipping, integration, derivations, normalizations or other conversions.
  • Signal preprocessing can also do intelligent data reduction perform. For this purpose, a simple processor could be assigned to the inertial sensor system, which determines these variables.
  • FIG. 1 shows a block diagram of the device according to the invention
  • Figure 2 is a top view in a vehicle.
  • Airbag control units usually have an inertial sensor system, ie
  • peripheral acceleration sensors can also be provided.
  • control device no longer has any sensors
  • sensors are then installed separately in the vehicle. They can either be implemented in separate housings or as a functional cluster. This means that the installation requirements for the control unit with the processor are reduced in such a way that the installation location can now be chosen freely, since the space in the central vehicle tunnel is very limited and expensive
  • the now outsourced sensors are connected to the now freely installable airbag control unit.
  • the inertial sensor system has, for example, two or three sensor elements in order to detect accelerations in X (vehicle longitudinal direction) Y (vehicle transverse direction) or Z direction (vehicle vertical direction). It is possible to also z the sensor at an angle. B. to be arranged by 45 ° relative to the longitudinal axis of the vehicle, in order to thereby realize a better detection of angle crashes. For a rollover module z. B. integrated a YZ acceleration sensor for low accelerations with a rotation rate sensor in a housing Depending on the requirements, the sensor module or sensors are located on the tunnel, if necessary or at another location. These can be moved within the scope of their requirements. B. a rotation rate sensor should only be in the XY plane. So there is only an angle requirement, it does not have to be arranged on the tunnel. An acceleration sensor in the vehicle longitudinal direction can on the
  • Tunnels are moved on the X axis.
  • a system consisting of two peripheral XY acceleration sensors can also be used.
  • the entire central acceleration sensor system can also be fastened in a sensor cluster centrally to the front wall (engine compartment / passenger compartment partition).
  • Extension of the X axis or the tunnel are attached and even detect higher signals because they are closer to the crash view.
  • an existing two-wire interface can be used as the interface to the processor, but other interfaces are also conceivable.
  • Such alternatives are represented, for example, by BUS systems. This allows multiple sensors and actuators to be connected together. It is also conceivable that other control units can access the sensor information and use it for further functions. These include, for example, vehicle dynamics controls.
  • the sensor modules send their measurement data via the interface to the control unit or the processor.
  • signal preprocessing such as e.g. B. a filtering, a clipping a cutting of amplitudes, an integration of a derivative, normalizations, conversions, etc. are carried out. If it is a more complex module with two or more sensor elements, intelligent data reduction can also be carried out in the module itself.
  • a small processor in the sensor module only calculates the crash-relevant quantities and only sends them to the control unit or the processor.
  • the control unit without sensors can be installed anywhere in the vehicle. Examples of this are the trunk, the instrument panel, a place under the vehicle
  • Another embodiment of the control unit without sensors is a plug-in module, ie a plug-in module that can be installed in standardized slots. This has the advantage that a simple update can be carried out in the workshop by replacing the plug-in module with the newer version. For example, 9-inch racks can be used.
  • control device is reduced to an ignition module, which represents the hardware for the airbag deployment.
  • the entire software with the triggering algorithm is either in another control unit or in a central vehicle computer.
  • the central vehicle computer has at least one BUS system that is designed for a security system. Control commands are transmitted to the ignition module with integrated intelligence as well as a reversible restraining device such as belt tensioners or headrests via this BUS system.
  • a major advantage of the central computer in the vehicle is that this system has access to all system information from different subsystems without requiring complicated networking of different control units.
  • the invention advantageously leads to the sensor module being able to be made small and thus being easy to install in confined spaces such as the center tunnel.
  • the compactness of the sensor module allows it to be better connected to the vehicle structure and is therefore more suitable for absorbing the delays more quickly. Furthermore, the compact design of the sensor module means that it is decoupled from the printed circuit board of the control unit and thus no transfer of printed circuit board vibrations to the sensor is possible.
  • FIG. 1 shows a block diagram of the device according to the invention.
  • An internal sensor system 10 is located on the vehicle tunnel 13.
  • the internal sensor system 10 is connected to an interface module 11, which is an element of a control device 16 for controlling personal protection means and is located at location 14, this is the trunk.
  • the interface module 11 transmits the data from the inertial sensor system 10 to a processor ⁇ C, which is connected to a memory 12 via a data input output in order to process the data.
  • the processor ⁇ C is connected via a data output to an ignition circuit control FLIC, which is located at location 15, for example in the instrument panel. In an ignition case, the ignition circuit control FLIC leads to energization of the ignition element ZP, the ignition of which then
  • Inflating for example, an airbag leads.
  • elements such as a safety semiconductor for parallel monitoring of the sensor values and the processor ⁇ C, are also missing in the control device 16.
  • Other sensor systems such as an interior sensor system or pre-crash sensor system are also omitted here for the sake of simplicity, but can simply be added. This division of the elements into different locations enables extremely flexible placement of these components.
  • FIG. 2a shows a configuration in a vehicle in which a control unit 21 is connected without sensors to XY sensors in the B-pillars 22 and 23 and also with a sensor 24 for detecting a rotary movement, for example, about the vehicle longitudinal axis about a so-called Rollover.
  • the ignition circuit control can be located in the control unit 21 or in other places such as a vehicle seat.
  • FIG. 2b shows an alternative, wherein the same elements are numbered with the same reference numerals.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)
  • Vehicle Body Suspensions (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

The invention relates to a control device for controlling person-protecting means in a motor vehicle comprising an inertial sensor (19) on first the location (13) of the vehicle, a processor ( mu C) on the second location (14) and an ignition circuit control unit (FLIC) on the third location of said vehicle, wherein the processor ( mu C) processes the signals of the sensor (10) and controls the ignition circuit (FLIC) accordingly.

Description

Vorrichtung zur Ansteuerung von PersonenschutzmittelnDevice for controlling personal protection devices
Stand der TechnikState of the art
Die Erfindung geht aus von einer Vorrichtung zur Ansteuerung von Personenschutzmitteln nach der Gattung des unabhängigen Patentanspruchs.The invention relates to a device for controlling personal protection devices according to the type of the independent claim.
Es ist bereits bekannt, dass es Vorrichtungen zur Ansteuerung von Personenschutzmitteln wie Airbags, Gurtstraffern oder Überrollbügel gibt.It is already known that there are devices for controlling personal protection devices such as airbags, belt tensioners or roll bars.
Vorteile der ErfindungAdvantages of the invention
Die erfindungsgemäße Vorrichtung zur Ansteuerung von Personenschutzmitteln in einem Fahizeug mit den Merkmalen des unabhängigen Patentanspruchs hat den Vorteil, dass die Inertialsensoik, der Prozessor und die Zündkreisansteuerung jeweils an verschiedenen Orten im Fahrzeug angeordnet sind. Diese Orte sind so unterschiedlich, dass sie sich nicht in der Nähe zueinander befinden. Dies hat den Vorteil, dass der Prozessor mit seiner Peripherie, die das Steuergerät ausmacht, aber diesmal ohne Sensorik frei im Fahrzeug platziert werden kann, ohne auf die Notwendigkeit der Inertialsensorik eingehen zu müssen. Insbesondere ist es nicht mehr notwendig, das Steuergerät am Fahrzeugtunnel anzuordnen, wo nunmehr nur noch die Inertialssensorik angeordnet werden muss. DieThe device according to the invention for controlling personal protection devices in a vehicle with the features of the independent claim has the advantage that the inertial sensors, the processor and the ignition circuit control are each arranged at different locations in the vehicle. These places are so different that they are not close to each other. This has the advantage that the processor with its periphery, which makes up the control unit, can be placed freely in the vehicle this time without sensors, without having to go into the need for inertial sensors. In particular, it is no longer necessary to arrange the control unit on the vehicle tunnel, where only the inertial sensor system now has to be arranged. The
Inertialsensorik umfasst Beschleunigungssensoren in verschiedenen Raumrichtungen, die beispielsweise in Fahrzeuglängs, -quer und Vertikalrichtung angeordnet sein können, aber auch winklig zu diesen Achsen. Weiterhin umfasst die Inertialsensorik eine Erfassung von Drehbewegungen, wie Drehbeschleunigungs- oder Drehratensensoren. Es ist jedoch auch möglich, dass die Inertialsensorik verteilt an der Peripherie des Fahrzeugs angeordnet ist, wobei zu der Peripherie A-, B-, C-Säulen der Kühlergrill u.s.w. zählen. Die Inertialsensorik kann auch zentral an einer Stirnwand beispielsweise der Trennwand Motorraum-Fahrgastzelle befestigt sein. Der Vorteil ist, dass einerseits die Sensoren in der Verlängerung der Fahrzeuglängsachse angebracht sind und sogar höhere Signale detektieren, da sie näher an einem Crashgeschehen liegen, sofern das Crashgeschehen einInertial sensors include acceleration sensors in various spatial directions, which can be arranged, for example, in the vehicle's longitudinal, transverse and vertical directions, but also at an angle to these axes. Furthermore, the inertial sensor system includes detection of rotary movements, such as rotational acceleration or rotation rate sensors. However, it is also possible for the inertial sensor system to be distributed on the periphery of the vehicle is arranged, with the periphery A, B, C pillars of the grille, etc. count. The inertial sensor system can also be attached centrally to an end wall, for example of the engine compartment-passenger compartment partition. The advantage is that, on the one hand, the sensors are mounted in the extension of the longitudinal axis of the vehicle and even detect higher signals, since they are closer to a crash event if the crash event occurs
Frontaufprall istFront impact is
Durch die in den abhängigen Ansprüchen aufgeführten Maßnahmen und Weiterbildungen sind vorteilhafte Verbesserungen der im unabhängigen Patenanspruch angegebenen Vorrichtungen zur Ansteuerung von Personenschutzmitteln möglich.The measures and further developments listed in the dependent claims permit advantageous improvements to the devices for controlling personal protection means specified in the independent patent claim.
Besonders vorteilhaft ist, dass der Ort an dem sich die Inertialsensorik befindet der Fahrzeugtunnel oder die B-Säulen sind. Beides sind Orte, die eine optimale Sensierung ermöglichen. Auf dem Fahrzeugtunnel ist eine sehr zentrale Position gegeben, während die B-Säulen nahe an einem Seitencrashgeschehen sind, insbesondere kann aber hier auch ein Frontcrash detektiert werden, wenn auch Sensoren verwendet werden, die nicht nur in Fahrzeugquerrichtung, sondern auch in Fahrzeuglängsrichtung sensieren. Dies kann auch um Upfrontsensoren, also solche Sensoren, die am Kühlergrill in der Fahrzeugfront angebracht sind, ergänzt werden. Der Ort, an dem der Prozessor und auch die Zündkreisanordnung angeordnet sind, können der Kofferraum, die Instrumententafel unter einem Fahrzeugsitz oder in einem Fahrzeugsitz das Fahrzeugdach oder der Motorraum sein. Der Prozessor kann vorzugsweise auf einer Steckkarte angebracht sein, so dass ein einfaches Auswechseln in einem Wartungszyklus möglich ist. Der Prozessor kann weiterhin vorteilhafterweise ein Zentralrechner für das Fahrzeug sein, der neben der Ansteuerung von Personenschutzmitteln auch andere Aufgaben erledigt, wieIt is particularly advantageous that the location where the inertial sensors are located is the vehicle tunnel or the B-pillars. Both are places that enable optimal sensation. There is a very central position on the vehicle tunnel, while the B-pillars are close to a side crash, but in particular a front crash can also be detected here if sensors are also used which sense not only in the vehicle transverse direction but also in the vehicle longitudinal direction. This can also be supplemented by upfront sensors, i.e. those sensors that are attached to the radiator grille in the front of the vehicle. The location at which the processor and also the ignition circuit arrangement are arranged can be the trunk, the instrument panel under a vehicle seat or in a vehicle seat the vehicle roof or the engine compartment. The processor can preferably be mounted on a plug-in card, so that it can be easily replaced in a maintenance cycle. The processor can also advantageously be a central computer for the vehicle, which, in addition to controlling personal protection means, also performs other tasks, such as
Komfortfύnklionen oder andere Fahrzeugsysteme wie Bremssysteme. Der Prozessor kann mit der Inertialsensorik und auch mit der Zündkreisansteuerung jeweils über einen Bus verbunden sein. Alternativ ist es möglicht, dass auch Zweidrahtverbindungen die Punkt- zu-Punkt-Verbindungen darstellen, verwendet werden.Comfort zones or other vehicle systems such as braking systems. The processor can be connected to the inertial sensor system and also to the ignition circuit control via a bus. Alternatively, two-wire connections that represent point-to-point connections can also be used.
Weiterhin ist es von Vorteil, dass die Inertialsensorik eine Signalvorauswertung aufweist Diese Signalvorauswertung nimmt dem Prozessor bereits einige Aufgäben ab, so dass im Prozessor der Ablauf beschleunigt wird. Solche Signalvorverarbeitungsaufgaben sind z. B. eine Filterung, ein Clipping, eine Integration, Ableitungen, Normierungen oder andere Umrechnungen. Die Signalvorverarbeitung kann auch eine intelligente Datenreduktion durchf hren. Dafür könnte ein einfacher Prozessor der Inertialsensorik zugeordnet sein, der diese Größen bestimmt.Furthermore, it is advantageous that the inertial sensor system has a signal pre-evaluation. This signal pre-evaluation already relieves the processor of a few tasks, so that the process in the processor is accelerated. Such signal preprocessing tasks are e.g. B. filtering, clipping, integration, derivations, normalizations or other conversions. Signal preprocessing can also do intelligent data reduction perform. For this purpose, a simple processor could be assigned to the inertial sensor system, which determines these variables.
Zeichnungdrawing
Ausfuhrungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden in der nachfolgenden Beschreibung näher erläutert.Exemplary embodiments of the invention are shown in the drawing and are explained in more detail in the description below.
Es zeigen Figur 1 ein Blockschaltbild der erfindungsgemäßen Vorrichtung undFIG. 1 shows a block diagram of the device according to the invention and
Figur 2 eine Aufsicht in einem Fahrzeug.Figure 2 is a top view in a vehicle.
Beschreibungdescription
Airbagsteuergeräte weisen üblicherweise eine Inertialsensorik, alsoAirbag control units usually have an inertial sensor system, ie
Beschleunigungssensoren und gegebenenfalls auch Sensoren zur Erfassung einer Drehbewegung auf und werden daher üblicherweise auf dem Fahrzeugtunnel angebracht. Zusätzlich können auch noch periphere Beschleunigungssensoren vorgesehen sein.Acceleration sensors and possibly also sensors for detecting a rotary movement and are therefore usually attached to the vehicle tunnel. In addition, peripheral acceleration sensors can also be provided.
Erfindungsgemäß ist vorgesehen, dass das Steuergerät keine Sensoren mehr aufweistAccording to the invention, it is provided that the control device no longer has any sensors
Diese Sensoren werden dann separat im Fahrzeug eingebaut. Dabei können Sie entweder in einzeln separaten Gehäusen oder auch als ein funktionaler Cluster ausgeführt sein. Damit ist erreicht, dass die Einbau-Anforderung an das Steuergerät mit dem Prozessor derart reduziert werden, dass der Einbauort nunmehr frei gewählt werden kann, da der Platz auf dem zentralen Fahrzeugtunnel stark begrenzt und teuer istThese sensors are then installed separately in the vehicle. They can either be implemented in separate housings or as a functional cluster. This means that the installation requirements for the control unit with the processor are reduced in such a way that the installation location can now be chosen freely, since the space in the central vehicle tunnel is very limited and expensive
Die nun ausgelagerte Sensorik wird an das nun frei einbaubare Airbagsteuergerät angeschlossen. Die Inertialsensorik weist beispielsweise zwei bzw. drei Sensorelemente auf, um in X (Fahrzeuglängsrichtung) Y (Fahrzeugquerrichtung) bzw. Z-Richtung (Fahrzeugvertikalrichtung) Beschleunigungen zu erfassen. Dabei besteht die Möglichkeit, den Sensor auch um einen Winkel z. B. um 45° gegenüber der Fahrzeuglängsachse anzuordnen, um dadurch eine bessere Erkennung von Winkelcrashes zu realisieren. Für ein Rollovermodul wird z. B. ein YZ-Beschleunigungssensor für niedrige Beschleumgungen mit einem Drehratensensor in ein Gehäuse integriert Das oder die Sensormodule sitzen je nach Anforderungen auf dem Tunnel, falls dies erforderlich ist oder auch an einem anderen Ort. Diese sind im Rahmen ihrer Anforderungen verschiebbar z. B. ein Drehratensensor sollte nur in der XY-Ebene liegen. Es besteht also lediglich eine Winkelanforderung, er muss nicht auf dem Tunnel angeordnet sein. Ein Beschleunigungssensor in Fahrzeuglängsrichtung kann auf demThe now outsourced sensors are connected to the now freely installable airbag control unit. The inertial sensor system has, for example, two or three sensor elements in order to detect accelerations in X (vehicle longitudinal direction) Y (vehicle transverse direction) or Z direction (vehicle vertical direction). It is possible to also z the sensor at an angle. B. to be arranged by 45 ° relative to the longitudinal axis of the vehicle, in order to thereby realize a better detection of angle crashes. For a rollover module z. B. integrated a YZ acceleration sensor for low accelerations with a rotation rate sensor in a housing Depending on the requirements, the sensor module or sensors are located on the tunnel, if necessary or at another location. These can be moved within the scope of their requirements. B. a rotation rate sensor should only be in the XY plane. So there is only an angle requirement, it does not have to be arranged on the tunnel. An acceleration sensor in the vehicle longitudinal direction can on the
Tunnel auf der X-Achse verschoben werden. Alternativ zu einem zentralen XY- Beschleungiungssensor auf dem Fahrzeugtunnel kann auch ein System aus zwei peripheren XY-Beschleunigungssensoren z. B. in den B-Säulen verwendet werden. Dies hat den Vorteil, dass neben einer Seitensensierung auch eine bessere Offseterkennung im Frontcrash sowie eine bessere Erkennung von Winkelcrashes erreicht werden kann, wobei gleichzeitig der Tunnel frei von der Airbagsensorik gestaltet werden kann.Tunnels are moved on the X axis. As an alternative to a central XY acceleration sensor on the vehicle tunnel, a system consisting of two peripheral XY acceleration sensors can also be used. B. used in the B-pillars. This has the advantage that, in addition to side sensing, better offset detection in the front crash and better detection of angle crashes can also be achieved, and the tunnel can be designed free of the airbag sensors at the same time.
Als weitere Ausführungsform kann die gesamte zentrale Beschleunigungssensorik auch ausgelagert in einem Sensorcluster zentral an der Stirnwand (Trennwand Motorraum- Fahrgastzelle) befestigt sein. Der Vorteil ist hier, dass einerseits die Sensoren in derAs a further embodiment, the entire central acceleration sensor system can also be fastened in a sensor cluster centrally to the front wall (engine compartment / passenger compartment partition). The advantage here is that on the one hand the sensors in the
Verlängerung der X-Achse bzw. des Tunnels angebracht sind und sogar höhere Signale delektieren, da sie näher am Crashgesehen liegen. Als Schnittstelle zum Prozessor kann beispielsweise eine bereits existierende Zweidrahtschnittstelle verwendet werden, es sind jedoch auch andere Schnittstellen denkbar. Solche Alternativen stellen beispielsweise BUS-Systeme dar. Dadurch können mehrere Sensoren sowie auch Aktuatoren zusammengeschaltet werden. Auch ist es denkbar, dass andere Steuergeräte auf die Sensorinformationen zugreifen und für weitere Funktionen nutzen können. Dazu zählen beispielsweise Fahrdynamikregelungen.Extension of the X axis or the tunnel are attached and even detect higher signals because they are closer to the crash view. For example, an existing two-wire interface can be used as the interface to the processor, but other interfaces are also conceivable. Such alternatives are represented, for example, by BUS systems. This allows multiple sensors and actuators to be connected together. It is also conceivable that other control units can access the sensor information and use it for further functions. These include, for example, vehicle dynamics controls.
In einem weiteren Schritt ist es auch denkbar, einen Drehratensensor bzw. einenIn a further step, it is also conceivable to use a rotation rate sensor or a
Beschleunigungssensor in Fahrzeuglängsrichtung zur Plausibilisierung in das Sensormodul zu integrieren, um das Airbagsteuergerät frei von Sensoren zu halten.Integrate the acceleration sensor in the vehicle's longitudinal direction into the sensor module for plausibility checking in order to keep the airbag control unit free of sensors.
Die Sensormodule senden ihre Messdaten über die Schnittstelle an das Steuergerät bzw. den Prozessor. Dabei kann in den Sensormodulen bereits eine Signalvorverarbeitung wie z. B. eine Filterung, ein Clipping also ein Abschneiden von Amplituden, eine Integration einer Ableitung, Normierungen, Umrechnungen u. s. w. durchgeführt werden. Handelt es sich um ein komplexeres Modul mit zwei oder mehr Sensorelementen, so kann im Modul selbst auch eine intelligente Datenreduktion durchgeführt werden. Ein kleiner Prozessor im Sensormodul berechnet nur jeweils die crashrelevanten Größen und übersendet nur diese an das Steuergerät bzw. den Prozessor.The sensor modules send their measurement data via the interface to the control unit or the processor. In this case, signal preprocessing such as e.g. B. a filtering, a clipping a cutting of amplitudes, an integration of a derivative, normalizations, conversions, etc. are carried out. If it is a more complex module with two or more sensor elements, intelligent data reduction can also be carried out in the module itself. A small processor in the sensor module only calculates the crash-relevant quantities and only sends them to the control unit or the processor.
Das Steuergerät ohne Sensoren kann im Fahrzeug an beliebiger Stelle eingebaut werden. Beispiele hierfür sind der Kofferraum, die Instrumententafel, ein Ort unter derThe control unit without sensors can be installed anywhere in the vehicle. Examples of this are the trunk, the instrument panel, a place under the
Rücksitzbank oder unter den Vordersitzen, im Dach, im Motorraum oder im Sitz. Eine weitere Ausfuhrungsform des Steuergeräts ohne Sensorik stellt ein Einschubmodul dar, also ein Steckmodul, welches in standardisierte Steckplätze montiert werden kann. Dies hat den Vorteil, dass ein einfaches Update in der Werkstatt vorgenommen werden kann, indem das Steckmodul durch die neuere Version ersetzt wi d. Dafür können beispielsweise 9-Zoll-Racks verwendet werden.Rear seat bench or under the front seats, in the roof, in the engine compartment or in the seat. Another embodiment of the control unit without sensors is a plug-in module, ie a plug-in module that can be installed in standardized slots. This has the advantage that a simple update can be carried out in the workshop by replacing the plug-in module with the newer version. For example, 9-inch racks can be used.
In einer weiteren Ausführungsform wird das Steuergerät auf ein Zündmodul reduziert, das die Hardware für die Airbagauslösung darstellt. Die gesamte Software mit dem Auslösealgorithmus befindet sich entweder in einem weiteren Steuergerät oder einem zentralen Fahrzeugrechner. Alternativ verfugt der zentrale Fahrzeugrechner über mindestens ein BUS-System, das für ein Sicherheitssystem ausgelegt ist. Über dieses BUS-System werden Steuerbefehle an das Zündmodul mit integrierter Intelligenz sowie direkt ein reversibler Rückhaltemittel wie Gurtstraffer oder Kopfstützen übertragen. Ein großer Vorteil des Zentralrechners im Fahrzeug ist, dass dieses System Zugriff auf sämtliche Systeminformationen aus verschiedenen Subsystemen hat, ohne eine komplizierte Vernetzung von verschiedenen Steuergeräten zu fordern.In a further embodiment, the control device is reduced to an ignition module, which represents the hardware for the airbag deployment. The entire software with the triggering algorithm is either in another control unit or in a central vehicle computer. Alternatively, the central vehicle computer has at least one BUS system that is designed for a security system. Control commands are transmitted to the ignition module with integrated intelligence as well as a reversible restraining device such as belt tensioners or headrests via this BUS system. A major advantage of the central computer in the vehicle is that this system has access to all system information from different subsystems without requiring complicated networking of different control units.
Vorteilhafterweise führt die Erfindung dazu, dass das Sensormodul klein gestaltet werden kann und damit bei beengten Platzverhältnissen wie dem Mitteltunnel leicht einbaubar ist.The invention advantageously leads to the sensor module being able to be made small and thus being easy to install in confined spaces such as the center tunnel.
Weiterhin kann das Sensormodul durch seine Kompaktheit besser an die Fahrzeugstruktur angeschlossen werden und ist damit besser geeignet, die Verzögerungen schneller aufzunehmen. Weiterhin fuhrt die kompakte Gestaltung des Sensormoduls dazu, dass es von der Leiterplatte des Steuergeräts entkoppelt ist und somit keine Übertragung von Leiterplattenschwingungen auf den Sensor möglich wird. DerFurthermore, the compactness of the sensor module allows it to be better connected to the vehicle structure and is therefore more suitable for absorbing the delays more quickly. Furthermore, the compact design of the sensor module means that it is decoupled from the printed circuit board of the control unit and thus no transfer of printed circuit board vibrations to the sensor is possible. The
Prozessor, der das Steuergerät darstellt, kann darüber hinaus auch an anderen Plätzen im Fahrzeug eingebaut werden, wo Bauraum zur Verfügung steht, z. B. wie oben dargestellt unter dem Sitz oder im Kofferraum, da der Platz auf dem Fahrzeugtunnel sehr teuer ist Ferner ist bei einem Defekt auf dem Airbagsteuergerät der Austausch einfacher, da der Zugang z. B. der Kofferraum relativ einfach ist. Figur 1 zeigt ein einem Blockschaltbild die erfindungsgemäße Vorrichtung. Auf dem Fahrzeugtunnel 13 befindet sich eine Intertialsensorik 10. Die Intertialsensorik 10 ist an einen Schnittstellenbaustein 11 angeschlossen, der Element eines Steuergeräts 16 zur Ansteuerung von Personenschutzmitteln ist und sich am Ort 14, dies ist der Kofferraum, befindet. Der Schnittstellenbaustein 11 überträgt die Daten von der Inertialsensorik 10 zu einem Prozessor μC, der über einen DateneinJ-ausgang mit einem Speicher 12 verbunden ist, um die Daten zu verarbeiten. Der Prozessor μC ist über einen Datenausgang mit einer Zündkreisansteuerung FLIC verbunden, die sich am Ort 15 befindet, beispielsweise in der Instrumententafel. Die Zündkreisansteuerung FLIC fuhrt in einem Zündfall zu einer Bestromung des Zündelements ZP, dessen Zündung dann zumProcessor, which represents the control unit, can also be installed in other places in the vehicle where space is available, for. B. as shown above under the seat or in the trunk, since the space on the vehicle tunnel is very expensive. B. the trunk is relatively simple. Figure 1 shows a block diagram of the device according to the invention. An internal sensor system 10 is located on the vehicle tunnel 13. The internal sensor system 10 is connected to an interface module 11, which is an element of a control device 16 for controlling personal protection means and is located at location 14, this is the trunk. The interface module 11 transmits the data from the inertial sensor system 10 to a processor μC, which is connected to a memory 12 via a data input output in order to process the data. The processor μC is connected via a data output to an ignition circuit control FLIC, which is located at location 15, for example in the instrument panel. In an ignition case, the ignition circuit control FLIC leads to energization of the ignition element ZP, the ignition of which then
Aufblasen beispielsweise eines Airbags führt. Der Einfachheit halber sind hier nur Einzelelement dargestellt und auch im Steuergerät 16 fehlen Elemente wie beispielsweise ein Sicherheitshalbleiter zur parallelen Überwachung der Sensorwerte und des Prozessors μC. Auch weitere Sensoriken, wie eine Innenraumsensorik oder Precrashsensorik sind hier der Einfachheit halber weggelassen, können aber in einfacherweise hinzugefügt werden. Diese Aufteilung der Elemente an verschiedenen Orten ermöglicht eine äußerst flexible Platzierung dieser Komponenten.Inflating, for example, an airbag leads. For the sake of simplicity, only individual elements are shown here and elements, such as a safety semiconductor for parallel monitoring of the sensor values and the processor μC, are also missing in the control device 16. Other sensor systems, such as an interior sensor system or pre-crash sensor system are also omitted here for the sake of simplicity, but can simply be added. This division of the elements into different locations enables extremely flexible placement of these components.
Die Figuren 2a und b zeigen Beispiele vor solcher Ausführungen. In Figur 2a ist eine Konfiguration in einem Fahrzeug dargestellt, bei dem ein Steuergerät 21 ohne Sensoren mit jeweils XY-Sensoren in den B-Säulen 22 und 23 verbunden ist und auch mit einem Sensor 24 zur Erfassung einer Drehbewegung beispielsweise um die Fahrzeuglängsachse um einen sogenannten Überschlag zu erkennen. Die Zündkreisansteuerung kann sich im Steuergerät 21 befinden oder auch an anderen Orten wie beispielsweise einem Fahrzeugsitz.Figures 2a and b show examples before such designs. FIG. 2a shows a configuration in a vehicle in which a control unit 21 is connected without sensors to XY sensors in the B-pillars 22 and 23 and also with a sensor 24 for detecting a rotary movement, for example, about the vehicle longitudinal axis about a so-called Rollover. The ignition circuit control can be located in the control unit 21 or in other places such as a vehicle seat.
Figur 2b zeigt eine Alternative, wobei gleiche Elemente mit gleichen Bezugszeichen beziffert sind. In dem Steuergerät 21, den beiden XY-Sensoren 22 und 23, in den B- Säulen und dem Sensor 24 zur Erfassung der Drehbewegimg, beispielsweise ein Drehratensensor ist hier nun auch ein Upfrontsensor 25 in der Fahrzeugfront vorgesehen, der eine schnelle Detektierung eines Frontcrashes ermöglicht Figure 2b shows an alternative, wherein the same elements are numbered with the same reference numerals. In the control unit 21, the two XY sensors 22 and 23, in the B-pillars and the sensor 24 for detecting the rotational movement, for example a rotation rate sensor, an upfront sensor 25 is now also provided in the front of the vehicle here, which enables rapid detection of a front crash

Claims

Ansprüche Expectations
1. Vorrichtung zur Ansteuerung von Personenschutzmitteln in einem Fahrzeug, dadurch gekennzeichnet, dass eine Inertialsensorik (10) an einem ersten Ort (13) in einem Fahrzeug (20), ein Prozessor (μC) zur Auswertung eines Signals der Inertialsensorik (10) an einem zweiten Ort (14) im Fahrzeug (20) und eine Zündkreisansteuerung (FLIC), die in Abhängigkeit von einem zweiten Signal des Prozessors (μC) angesteuert wird, an einem dritten Ort (15) im Fahrzeug vorgesehen sind.1. Device for controlling personal protection devices in a vehicle, characterized in that an inertial sensor system (10) at a first location (13) in a vehicle (20), a processor (μC) for evaluating a signal of the inertial sensor system (10) on one a second location (14) in the vehicle (20) and an ignition circuit control (FLIC), which is triggered as a function of a second signal from the processor (μC), are provided at a third location (15) in the vehicle.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der erste Ort (13) der Falirzeugtunnel oder die B-Säulen sind.2. Device according to claim 1, characterized in that the first location (13) is the Falirzeugtunnel or the B-pillars.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der zweite und/oder der dritte Ort (14, 15) einen Kofferraum oder die Instrumententafel oder unter oder in einem Fahrzeugsitz oder das Fahrzeugdach oder der Motorraum sind.3. Device according to claim 1 or 2, characterized in that the second and / or the third location (14, 15) are a trunk or the instrument panel or under or in a vehicle seat or the vehicle roof or the engine compartment.
4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Prozessor (μC) ein Zentralrechner für das Fahrzeug (20) ist.4. Device according to one of the preceding claims, characterized in that the processor (μC) is a central computer for the vehicle (20).
5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Inertialsensorik (10) eine Sensorsignalvorauswertung aufweist5. Device according to one of the preceding claims, characterized in that the inertial sensor system (10) has a sensor signal pre-evaluation
6. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Inertialsensorik (10) mit dem Prozessor (μC) mit der Zündkreisansteuerung (FLIC) jeweils über ein BUS- System verbunden sind. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Prozessor (μC) auf einem Steckmodul angeordnet ist. 6. The device according to claim 1, characterized in that the inertial sensors (10) with the processor (μC) with the ignition circuit control (FLIC) are each connected via a BUS system. Device according to one of the preceding claims, characterized in that the processor (μC) is arranged on a plug-in module.
EP05716592A 2004-03-27 2005-01-25 Control device for controlling person-protecting means Ceased EP1735190A2 (en)

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DE102004015125.3A DE102004015125B4 (en) 2004-03-27 2004-03-27 Device for controlling personal protective equipment
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DE102004015125B4 (en) 2017-09-14
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US20080290636A1 (en) 2008-11-27
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