EP1901943A1 - Dispositif pour regler la force exercee par une ceinture de securite dans un vehicule - Google Patents

Dispositif pour regler la force exercee par une ceinture de securite dans un vehicule

Info

Publication number
EP1901943A1
EP1901943A1 EP06755298A EP06755298A EP1901943A1 EP 1901943 A1 EP1901943 A1 EP 1901943A1 EP 06755298 A EP06755298 A EP 06755298A EP 06755298 A EP06755298 A EP 06755298A EP 1901943 A1 EP1901943 A1 EP 1901943A1
Authority
EP
European Patent Office
Prior art keywords
belt
belt force
force
occupant
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.)
Withdrawn
Application number
EP06755298A
Other languages
German (de)
English (en)
Inventor
Frank Ewerhart
Reiner Marchthaler
Thomas Lich
Stephan Stabrey
Georg Mayer
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
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1901943A1 publication Critical patent/EP1901943A1/fr
Withdrawn legal-status Critical Current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
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01558—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use monitoring crash strength
    • 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
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512—Passenger detection systems
    • B60R21/01516—Passenger detection systems using force or pressure sensing means
    • 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
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512—Passenger detection systems
    • B60R21/01544—Passenger detection systems detecting seat belt parameters, e.g. length, tension or height-adjustment
    • B60R21/0155—Passenger detection systems detecting seat belt parameters, e.g. length, tension or height-adjustment sensing belt tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/18—Anchoring devices
    • B60R22/19—Anchoring devices with means for reducing belt tension during use under normal conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/18—Anchoring devices
    • B60R22/195—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type

Definitions

  • the invention relates to a device for adjusting a belt force of a safety belt in a vehicle according to the preamble of the independent claim.
  • the inventive device for adjusting a belt force of a seat belt in a vehicle has the advantage that minimized by the Gurtkraftregelung invention based on a Gurtkraft Anlagen the burden on the vehicle occupant by the transmitted belt forces and thus the risk of injury caused by the belt is reduced. This is achieved in that the space that exists between the vehicle occupant and the steering wheel, is used optimally.
  • the path that the vehicle occupant may travel to the steering wheel or the dashboard without striking the steering wheel or the dashboard is included in an adapted and situation-dependent use of the belt tensioner.
  • the device according to the invention has, for example, a belt force sensor for detecting the belt force and a belt force actuator Influencing the belt force.
  • the measured belt force is compared with the belt force target value so as to generate a belt force actuator drive signal.
  • the device adjusts the belt force in dependence on a difference of the desired value of a measured value.
  • the difference between the nominal value and the measured value is the simplest possibility of comparison, although other comparison possibilities may also be present.
  • the device is advantageously coupled with a Gurtkraftaktor to allow the adjustment of the belt force
  • the belt force limit is variably adjustable in order to adjust the belt force limit adaptively and thus situation-dependent.
  • the belt force limitation may be adjustable, for example, by virtue of the fact that a torsion bar, which serves to limit the belt force, can be rotated with a variable length and thus the belt force limitation changes.
  • a slip clutch is used.
  • Another alternative is an electromotive trained Gurtkraftaktor, in which the belt force is actively built and thus electrically adjustable.
  • a pneumatic solution is also possible here.
  • the Gurtkraftaktor or even Gurtkraftautor to the Gurtkraftaktor
  • the Gurtkraftaktor can also have a reversible electromotive unit in addition to an irreversible pyrotechnic unit.
  • the device can be coupled with a belt force sensor for measuring the belt force, wherein the belt force sensor, the belt force is connected, for example, with the buckle and that on the opposite side at which the belt tongue is inserted into the buckle. But even at the end fitting and / or on the belt height adjustment of the belt force sensor can be attached. Is that the Belt force sensor with the Gurtkraftaktor in operative connection, then a force measurement is also possible via current measurement. Otherwise, the belt force is measured as a tensile force.
  • the device determines the desired value as a function of an occupant mass and / or a crash severity and / or an occupant position and / or further occupant-related data, because these parameters determine which belt force has to be expended in order to restrain the occupant in a corresponding situation with the belt .
  • the weight of the occupant plays a role and also its position, ie how far it is bent in the direction of the dashboard.
  • the crash severity determines the force with which the vehicle occupant is delayed.
  • Age- or condition-specific data can also be used here via the occupant-related data in order to determine which belt force an occupant can be subjected to without injuring him.
  • Vorverlagerungsweges to the steering wheel a smaller force can be used to reduce the burden of the retention force in these elderly people.
  • the occupant-related data can be detected by sensors and / or, for example, read via a chip card in the vehicle and / or be stored in a database, which is retrievable from the vehicle.
  • the device determines the occupant mass and / or the occupant position on the seat with the aid of an existing sensor for seat occupancy recognition and / or occupant classification.
  • This may be, for example, force measuring pins in the frame of the seat or sensor mats in
  • the absolute position of the occupant can be estimated.
  • the absolute position of the occupant can advantageously also be detected with an imaging sensor system, preferably a video sensor system.
  • the occupant mass can also be estimated via the video sensors based on the volume.
  • the occupant position can also be determined as a function of the position of the vehicle seat, for example in the case of an electrically adjustable seat.
  • the crash severity is determined by means of an accident sensor.
  • accident sensors includes impact sensors such as acceleration sensors,
  • an imaging sensor for example, the video sensor or a radar sensor and / or an ultrasonic sensor and / or Lidarsensorik.
  • the determination of the collision speed is possible, which can be a measure of the crash severity.
  • the data of the environment sensors can be used for the preventive activation of the belt force actuator, for example the electric motor, which applies the belt force.
  • the belt extension length is, for example, on the number of turns on the
  • Figure 1 is a block diagram of the device according to the invention
  • Figure 2 is a block diagram
  • Figure 3 is a power timing diagram
  • Figure 4 shows different positions of the driver on the vehicle seat
  • Figure 5 is another power timing diagram.
  • Personal protective equipment such as the belt and the airbag should prevent the vehicle occupants from injuring themselves during an accident due to an impact on parts inside the vehicle. Since the vehicle can be extremely delayed in a frontal collision and the Inmates are accelerated relative to the vehicle as strong, must be transferred by the restraint systems large forces. Since the load capacity of the human body is limited, the physiological characteristics of the occupants must be taken into account when designing restraint systems. Thus, according to the state of the art, belt systems have mechanical solutions which limit the maximum force transmitted by the belt to a fixed value. Since the body, for example, are less resilient to older people, the belt forces should not be greater than for the retention of the occupant it is necessary.
  • Safety belts a measurement of belt force and a set value for the belt force to be considered.
  • a control loop for the belt force is created, with a sensor, the belt force is detected and an actuator, the belt force is adjusted.
  • the measured belt force is compared with a setpoint for the belt force, so as to generate a drive signal for the actuator.
  • the Gurtkraftaktor may for example be a Gurtkraftautomat, in which the force limit is variable when rolling.
  • a Gurtkraftaktor may additionally have a drive that allows an active building a belt force. Thus, for example, in a detected crash initially the slack can be reduced. With appropriate dimensioning of the Gurtkraftaktors one of the person and the situation adapted belt force can be adjusted in the subsequent crash case.
  • the desired value can be set as a function of the occupant mass and / or the occupant position and / or the crash severity and / or the occupant age and / or the occupant gender and / or the crash direction and / or the crash type, for example rollover.
  • To determine the occupant mass and the occupant position is an interior sensing necessary, in which case seat force sensors are proposed, which can detect in particular the occupant weight and also with a corresponding configuration, the occupant position.
  • an imaging sensor such as a video sensor is suitable.
  • an age determination or the recognition of a child seat or other physiological parameters is relevant in order to be able to specify a suitable belt force as the target variable and thus a desired value.
  • the crash severity can be determined by many known methods, wherein Here both an environment sensor and impact sensors such as acceleration sensors, contact sensors can be used.
  • FIG. 1 shows in a first block diagram the device according to the invention.
  • a vehicle occupant 13 sits on a vehicle seat 10 with a backrest 11 and a
  • the person 13 is secured by a belt 102, for example a three-point belt, wherein a belt force sensor 15 is arranged on the belt tongue.
  • a belt force sensor 15 is arranged on the belt tongue.
  • an actuator 14 is provided to pressurize the belt with a predetermined force.
  • This can be an electromotive or pneumatic drive unit. Other drive units are possible here.
  • Seat 10 has seat force sensors 16 and 17 which are installed in the frame of the vehicle seat 10 and generate a signal corresponding to the weight of the vehicle occupant 13 over a distance change by the applied seat force and transmit it to a control unit SG.
  • the measured belt force is transmitted from the belt force sensor 15 to the control unit SG.
  • the controller SG controls the actuator 14 to apply the corresponding force to the belt 102.
  • the control unit SG is further connected via a signal evaluation 19 with a video sensor 18, which observes the vehicle occupant 13 on the vehicle seat 10.
  • the video sensor 18 may be formed as a monovideo sensor or as a stereo video sensor.
  • the signal evaluation 19, for example, a signal processor prepares the signals of
  • Video sensor 18 and outputs, for example, a signal processed in this way to the control unit SG, which already indicates in which predetermined position the vehicle occupant 13 is located, that is, for example, very close to the steering wheel, in a middle position or very far back. These positions can then be transmitted coded accordingly.
  • the control unit SG itself the
  • control unit SG is connected to an impact sensor 101 and also to an environment sensor system 100 in order to be able to determine the crash severity, in which case the collision speed is preferably used as the parameter characterizing the crash severity.
  • the control unit SG can here with more
  • Personal protection means such as a pedestrian protection sensor and airbags be connected to control this according to an evaluation of the sensor signals.
  • the function which assumes the control unit SG here, is distributed to various control units.
  • the controller of the vehicle dynamics control from Apply brake data to the Brake Assist or other control units for evaluation.
  • the control unit SG determines from the sensor data of the environment sensor system 100, the accident sensor system 101, the seat force sensors 16 and 17 and the video sensor system 18
  • Vehicle occupant is recognized in terms of its age by the video sensors or biometric data can be read, which can lead to the adjustment of the belt force.
  • a child seat recognition can also be implemented here.
  • FIG. 1 is only an example, individual components can be omitted or also supplemented.
  • a Grundkonf ⁇ guration consists only of the control unit SG, the belt force sensor and the Gurtkraftaktor.
  • FIG. 2 shows a block diagram of the regulation of the belt force.
  • the belt force is detected by the belt force sensor 15 and compared in block 22 with the set value 21 for the belt force, in which case a difference is formed.
  • a signal is generated in the belt force controller to adjust the belt force to the target value.
  • the actuator is then generated according to the signal of the belt force controller 23, so that thus the actual value of the belt force 25 is present.
  • This control can be set variously sensitive to introduce a fast control or a gentle control. This can be done depending on the situation.
  • FIG. 3 shows a comparison of a conventional application of force to the belt with the belt-force control loop according to the invention, in which FIG Occupant movements are shown.
  • the curve 30 in the force timing diagram in Figure 3 shows the Gurtkraftbeaufschlagung the vehicle occupant at a constant belt force limit to the value F max according to the prior art. Due to the high belt force, the forward displacement in Sl in FIG. 3 is comparatively low, but the load on the occupant due to the belt force is unnecessarily high.
  • the curve 31 shows the belt force curve in a belt force control according to the invention, wherein a Gurtkraftaktor was accepted with the possibility of active construction of a belt force.
  • a Gurtkraftaktor was accepted with the possibility of active construction of a belt force.
  • the slack is reduced during the period 32 by actively building up a belt force.
  • the situational and occupant-dependent setpoint for the belt force and consequently the belt force actually set by the control are significantly lower in the case shown than in the prior art. This will increase the risk of injury due to being transferred
  • Figure 5 shows in a further belt force-time diagram two advantageous
  • the horizontal line 50 is the conventional constant belt force limit.
  • the curve 51 describes the belt force according to the invention in the event of a serious crash and an occupant classified as correspondingly resilient. Due to the high crash severity a correspondingly high belt force is set with the belt force control according to the invention, with the constant Gurtkraftbegrenzung according to the prior art, a sufficient retention would not be guaranteed.
  • the curve 52 describes the application of the belt force according to the invention in a slight crash. Here is a lower belt force necessary than the fixed belt force allows. The load of the occupant by the applied belt force is therefore lower than in the solution according to the prior art, which
  • Injuries can be avoided in less resilient, such as older occupants.
  • the invention thus enables a situation-adapted application of the belt force.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Air Bags (AREA)

Abstract

L'invention concerne un dispositif servant à régler la force exercée par une ceinture de sécurité (102) dans un véhicule. Le dispositif selon l'invention règle la force exercée par la ceinture en fonction d'une mesure de cette force et d'une valeur de consigne pour cette force.
EP06755298A 2005-07-04 2006-05-24 Dispositif pour regler la force exercee par une ceinture de securite dans un vehicule Withdrawn EP1901943A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510031031 DE102005031031A1 (de) 2005-07-04 2005-07-04 Vorrichtung zur Einstellung einer Gurtkraft eines Sicherheitsgurts in einem Fahrzeug
PCT/EP2006/062603 WO2007003471A1 (fr) 2005-07-04 2006-05-24 Dispositif pour regler la force exercee par une ceinture de securite dans un vehicule

Publications (1)

Publication Number Publication Date
EP1901943A1 true EP1901943A1 (fr) 2008-03-26

Family

ID=36764527

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06755298A Withdrawn EP1901943A1 (fr) 2005-07-04 2006-05-24 Dispositif pour regler la force exercee par une ceinture de securite dans un vehicule

Country Status (3)

Country Link
EP (1) EP1901943A1 (fr)
DE (1) DE102005031031A1 (fr)
WO (1) WO2007003471A1 (fr)

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US20070007066A1 (en) * 2005-07-08 2007-01-11 Siemens Vdo Automotive Corporation Peak load detection determination for deploying load limiting restraint devices
DE102008000984B4 (de) 2008-04-03 2019-04-25 Robert Bosch Gmbh Gurtaufrolleinheit sowie Verfahren zum Aufrollen von mindestens einem Gurtband sowie Gurtsystem für ein Insassenschutzsystem in einem Fahrzeug mit mindestens einer solchen Gurtaufrolleinheit
DE102009005301B4 (de) * 2009-01-16 2012-08-23 Autoliv Development Ab Reversibler Gurtstraffer
DE102009000656B9 (de) * 2009-02-06 2018-05-09 Robert Bosch Gmbh Verfahren und Steuergerät zur Ansteuerung einer Sicherheitsaktuatorik eines Fahrzeugs
DE102009049195A1 (de) * 2009-10-13 2011-04-21 Daimler Ag Verfahren für eine fahrdynamische Adaption einer Insassenfixierung
DE102012009081B4 (de) 2012-05-09 2023-10-05 Zf Automotive Germany Gmbh Gurtaufroller für einen Fahrzeug-Sicherheitsgurt
DE102012022392B4 (de) 2012-11-15 2016-02-04 Audi Ag Verfahren und Vorrichtung zur Steuerung einer mit einem Sicherheitsgurt verbundenen Sicherheitsgurt-Vorrichtung eines Fahrzeugs mit einer vorausschauenden Kollisionserkennungseinheit
DE102012022822A1 (de) * 2012-11-22 2013-08-14 Audi Ag Elektrisch verstellbare Komponente für ein Kraftfahrzeug und zugehöriges Betriebsverfahren
DE102014000842B4 (de) * 2014-01-22 2016-11-10 Audi Ag Verfahren zum Steuern einer Personen-Rückhalteeinrichtung eines Sicherheitssystems eines Fahrzeugs
DE102015207805B4 (de) * 2015-04-28 2019-10-10 Volkswagen Aktiengesellschaft System zur Erkennung der Sitzplatzbelegung eines Kraftfahrzeugsitzes
DE102019205375B4 (de) * 2019-04-15 2021-10-21 Zf Friedrichshafen Ag Gewichtsbestimmung eines Fahrzeuginsassen
KR20210003343A (ko) 2019-07-01 2021-01-12 현대자동차주식회사 차량의 안전 장비 제어 장치 및 방법
DE102019212408A1 (de) * 2019-08-20 2021-02-25 Zf Friedrichshafen Ag Verfahren zum Ermitteln des Körpergewichts und/oder der Sitzposition, Steuergerät sowie Kraftfahrzeug
DE102019218031B4 (de) * 2019-11-22 2023-06-15 Joyson Safety Systems Germany Gmbh Gurtaufroller

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GB2371780A (en) 2001-02-06 2002-08-07 Autoliv Dev A safety-belt arrangement
DE10121956C1 (de) * 2001-05-05 2002-11-28 Daimler Chrysler Ag Fahrzeugbasiertes Notfall-System
DE10310069B4 (de) * 2003-03-07 2007-02-22 Key Safety Systems, Inc., Sterling Heights Verfahren und Vorrichtung zur Regelung oder Steuerung eines Rückhaltesystems eines Kraftfahrzeugs
DE10345726B4 (de) * 2003-10-01 2013-11-14 Robert Bosch Gmbh Rückhaltesystem zum Zurückhalten eines Insassen in einem Kraftfahrzeug und Verfahren zum dynamischen Steuern eines derartigen Rückhaltesystems

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Also Published As

Publication number Publication date
WO2007003471A1 (fr) 2007-01-11
DE102005031031A1 (de) 2007-01-18

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