EP3844033A1 - Procédé pour faire fonctionner un système de retenue et système de retenue pour un véhicule - Google Patents

Procédé pour faire fonctionner un système de retenue et système de retenue pour un véhicule

Info

Publication number
EP3844033A1
EP3844033A1 EP19829405.0A EP19829405A EP3844033A1 EP 3844033 A1 EP3844033 A1 EP 3844033A1 EP 19829405 A EP19829405 A EP 19829405A EP 3844033 A1 EP3844033 A1 EP 3844033A1
Authority
EP
European Patent Office
Prior art keywords
airbag
distance
determined
threshold value
restraint system
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Withdrawn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
EP19829405.0A
Other languages
German (de)
English (en)
Inventor
Franz Fürst
Christoph Grundheber
Walter Krönes
Bernd Jakobs
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 EP3844033A1 publication Critical patent/EP3844033A1/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Withdrawn legal-status Critical Current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
    • B60R21/01512—Passenger detection systems
    • B60R21/01552—Passenger detection systems detecting position of specific human body parts, e.g. face, eyes or hands
    • 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
    • B60R2021/01204—Actuation parameters of safety arrangents
    • B60R2021/01211—Expansion of air bags
    • B60R2021/01218—Expansion of air bags control of expansion speed
    • 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
    • B60R2021/01204—Actuation parameters of safety arrangents
    • B60R2021/01211—Expansion of air bags
    • B60R2021/01225—Expansion of air bags control of expansion volume
    • 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
    • B60R2021/01286—Electronic control units

Definitions

  • the invention relates to a method for operating a restraint system according to the preamble of claim 1. Furthermore, the invention relates to a restraint system for a vehicle. Methods for operating restraint systems and restraint systems for vehicles are known in numerous variations. To ensure that passengers in the first row of seats are well protected by a belt and airbag in the event of an accident, the logbook provides information on the correct seat adjustment. These notes relate, among other things, to a seat distance to be selected from the steering wheel or the instrument panel and to the correct adjustment of the seat back.
  • the occupants of the first row of seats are not permitted to take a comfortable sitting position while driving, which is characterized either by a greater distance from the steering wheel or the instrument panel and / or by a greater backrest angle.
  • future vehicles with automated driving functions one would also like to offer the occupants of the first row of seats “comfort positions” or “rest positions” during a partially or fully automated journey.
  • DE 198 26 662 A1 discloses a generic method and a generic device for controlling the inflation behavior of an air bag, in particular a front airbag of a motor vehicle.
  • the airbag is inflated depending on a distance between the airbag and the head or upper body of the occupant, the distance between the airbag and the head or upper body of the occupant from the adjustment position of at least one adjustment part of a seat in relation to the Position of the airbag and the distance of the head or upper body is determined in relation to one of the adjustment parts, in which the distance sensor is integrated.
  • the inflation behavior can include the inflation volume and / or the inflation speed and / or the start of inflation of the airbag.
  • the distance sensor can be arranged, for example, in the headrest or in the shoulder region of the backrest and control the height of the headrest, the height of a height-adjustable backrest and / or the seat occupancy detection.
  • the positions of the seat longitudinal adjustment, the seat cushion height adjustment, the backrest adjustment, and the steering wheel depth and steering wheel tilt adjustment can be used to determine the distance. If the distance between the occupant and the airbag falls below a first predetermined minimum distance, which also poses a considerable risk of injury to the occupant by the airbag when the airbag is deployed to a minimum, the airbag is not deployed. If the distance between the occupant and the airbag is above the first predetermined minimum distance and below a defined second minimum distance, the airbag is inflated to a reduced extent.
  • the airbag is inflated completely with all the energy available. If the distance between the airbag and the occupant lies above the defined second minimum distance and below a predetermined third minimum distance, the airbag is inflated completely. Exceeds the distance between the occupant and the Airbag the defined third minimum distance, then the airbag is inflated completely, but with a time delay, in order to compensate for an adaptation to the excessive distance of the occupant to the airbag.
  • the invention is based on the object of providing a method for operating a restraint system and a restraint system for a vehicle which provide an appropriate level of occupant protection for various seat positions.
  • a head position of a vehicle occupant is continuously determined to a reference point in the vehicle, with a distance between the head from the specific head position of the vehicle occupant of the vehicle occupant and the at least one airbag in the idle state, it is determined, and the determined distance is evaluated by a comparison with stored reference values and at least one trigger size of the at least one airbag is determined on the basis of the comparison, with the restraint system being triggered with the at least one triggering variable corresponding triggering signals to the at least one airbag who the transmitted.
  • At least one airbag for bridging the distance between the head of the vehicle occupant and the at least one airbag has different deployment depths.
  • a first trigger size is determined, which activates the at least one airbag with a first deployment depth, if the determined distance is below a first threshold value or corresponds to the first threshold value
  • a second trigger size being determined, which includes the at least one airbag a second greater deployment depth activated when the determined distance is above the first threshold, and a warning message is issued to the occupant, which indicates an unsafe seating position when the determined distance is above a second threshold, which is greater than the first threshold.
  • a restraint system for a vehicle with at least one air bag, at least one evaluation and control unit and at least one sensor system is proposed, the at least one sensor system continuously determining a head position of a vehicle occupant relative to a reference point in the vehicle and to the evaluation and control unit is transmitted, which determines a distance between the head of the vehicle occupant and the at least one airbag at rest from the determined head position of the vehicle occupant and evaluates the determined distance by a comparison with reference values stored in a memory, the evaluation and control unit using the comparison at least determines a trigger size of the at least one airbag, the evaluation and control unit transmitting trigger signals corresponding to the at least one trigger size to the at least one airbag in the event of a triggering of the restraint system.
  • At least one airbag for bridging the distance between the head of the vehicle occupant and the at least one airbag has different deployment depths
  • the evaluation and control unit determining a first trigger size which activates the at least one airbag with a first deployment depth when the determined distance is below is a first threshold value or corresponds to the first threshold value
  • the evaluation and control unit determining a second trigger variable which activates the at least one airbag with a second greater deployment depth if the determined distance lies above the first threshold value
  • the evaluation and Control unit outputs a warning message to the occupant via an output unit, which indicates an unsafe seating position of the occupant if the determined distance lies above a second threshold value which is greater than the first threshold value.
  • a control criterion for this adaptivity of the deployment depth is thus formed for the control of the adaptivity of the deployment depth in at least one airbag with the aid of the reference variable “head clearance”.
  • the categories corresponding to the activation of the at least one airbag are formed as a function of various threshold values.
  • the at least one airbag is preferably a front airbag, such as a driver airbag or a passenger airbag.
  • a distance between the head and a reference point in the region of the impact pot or steering wheel is determined, in which the driver airbag is arranged in the rest position.
  • a distance between the head and a reference point in the area of the instrument panel is determined, in which the front passenger airbag is arranged in the rest position.
  • Embodiments of the present invention allow occupants of the first row of seats, such as a driver and / or front passenger, to take a comfortable sitting position during a partially automated or fully automated journey and, in the event of an accident, experience a comparable level of protection through the corresponding airbag as in upright sitting positions.
  • an inflation speed of the at least one airbag can be set as a function of the determined distance.
  • the at least one airbag can be inflated at a first speed if the determined distance is below a third threshold value or is equal to the third threshold value, which is smaller than the first threshold value.
  • the at least one airbag can be inflated at a higher second speed if the mean distance is above the third threshold value.
  • a damping behavior of the at least one airbag can be set as a function of the determined distance.
  • at least one trigger variable for setting the damping behavior can be determined based on the comparison of the Distance determined with stored reference values and a corresponding trigger signal to the at least one airbag are output.
  • the damping behavior of the at least one airbag can also be adapted to different positions of the occupant.
  • a position of a seat can be changed before or when the restraint system is triggered such that the distance between the head of the vehicle occupant and the at least one airbag is in the range of the defined threshold values.
  • the corresponding seat can be moved in the direction of the steering wheel or in the direction of the instrument panel if the determined distance was greater than the third threshold.
  • the head position of a vehicle occupant can be determined directly by means of a distance sensor.
  • the distance sensor system can comprise, for example, an ultrasound system and / or an infrared system and / or a camera system, which can determine the head position of a vehicle occupant directly to a reference point in the vehicle.
  • the head position of a vehicle occupant can be determined indirectly by means of a seat position sensor system.
  • the seat position sensor system can include, for example, a seat cushion sensor that detects a set height and a longitudinal position of the seat cushion of the corresponding seat, a seat back sensor that detects a set inclination of the seat back, and a headrest sensor that detects a set position of the headrest.
  • an upper region of the seat back which is also referred to as a back head
  • at least one further sensor can detect a set position of the upper region of the seat back or of the backrest head relative to a lower region of the seat back.
  • the exact head position of the occupant determined by the distance sensor system can then be used to specify the inflation behavior and / or the damping behavior of the corresponding airbag for the determined ge exact head position of the vehicle occupant.
  • inflation volume and / or inflation speed and / or start of inflation and / or cushioning of the airbag can be adapted to the determined head position of the vehicle occupant.
  • a steering wheel position can be taken into account when determining the distance between the head of the vehicle occupant and the at least one airbag in the idle state. Since the position of the corresponding airbag is changed in the idle state by changing the steering wheel position, the steering wheel position has an influence on the distance between the head of the vehicle occupant and the airbag in the idle state. Therefore, the steering wheel position is advantageously taken into account when determining the distance, in particular when the head position is determined indirectly via the seat position sensor system.
  • the restraint system can include a belt tensioner and / or an adaptive belt force limiter, at which different force levels can be set.
  • at least one trigger size of the belt tensioner and / or that of the adaptive belt force limiter can be determined on the basis of the comparison of the determined distance with stored reference values, and in each case corresponding trigger signals on the belt tensioner and / or on the adaptive ven belt force limiters are transmitted.
  • the functions of the belt tensioner and / or the belt force limiter can also be adapted to different positions of the occupant.
  • At least one airbag generator can be provided, the evaluation and control unit controlling the airbag generator in order to set an inflation speed of the at least one airbag as a function of the determined distance.
  • the air bag generator can inflate the at least one air bag at a first speed if the determined distance is below a third threshold value or is equal to the third threshold value, which is smaller than the first threshold value.
  • the airbag generator can inflate the at least one airbag at a higher second speed if the determined distance is above the third threshold value.
  • the at least one airbag can comprise at least one tensioning strap which limits deployment of the at least one airbag to the first deployment depth.
  • the evaluation and control unit can release the at least one tensioning strap via a release element in order to activate the at least one airbag with the second greater deployment depth.
  • the at least one tensioning strap makes it possible in a simple manner to specify a desired deployment depth when the airbag is activated.
  • the at least one airbag can comprise at least one valve.
  • the evaluation and control unit can determine at least one trigger size of the at least one valve based on the comparison of the determined distance with stored reference values and output a corresponding trigger signal to the at least one valve in order to set the damping behavior of the at least one airbag.
  • the at least one valve makes it easy to specify a desired damping behavior when the airbag is activated.
  • the evaluation and control unit can change a position of the seat via at least one adjustment element before or in the event of a triggering of the restraint system such that the distance between the head of the vehicle occupant and the at least one airbag is in the range of the defined threshold values lies.
  • the at least one adjustment element for example, a position of the seat cushion in the vehicle vertical direction and / or in the vehicle longitudinal direction or an inclination angle of the vehicle backrest or a position of a headrest or a position of a backrest head can be changed.
  • the at least one adjustment element can comprise, for example, an electrical or hydraulic or pneumatic actuator.
  • Figure 1 is a schematic block diagram of a vehicle with an embodiment of a restraint system for a vehicle according to the invention.
  • Fig. 2 is a schematic representation of a section of an interior of the vehicle of Figure 1 with an occupant and a seat in a normal position and an airbag triggered with a first deployment depth.
  • 3 shows a schematic representation of the detail of the interior of the vehicle from FIG. 2 with the occupant and the seat in a comfort position and the airbag deployed with a second deployment depth;
  • FIG. 4 shows a schematic flow diagram of an exemplary embodiment of a method according to the invention for operating a restraint system.
  • the restraint system 10 for a vehicle 1 has at least one airbag 12, at least one evaluation and control unit 14 and at least one sensor system 16.
  • the at least one sensor system 16 continuously determines a head position of a vehicle occupant 3 with respect to a reference point in the vehicle 1 and transmits the head position of the vehicle occupant 3 to the evaluation and control unit 14, which determines a distance A between the head 5 of the vehicle head 3 from the determined head position Vehicle occupants 3 and the at least one airbag 12 at rest were determined and the determined distance A was evaluated by a comparison with reference values stored in a memory 18.
  • the evaluation and control unit 14 uses the comparison to determine at least one trigger size of the at least one airbag 12 and, in the event of a triggering of the restraint system 10, transmits trigger signals that correspond to the at least one trigger variable to the at least one airbag 12.
  • at least one airbag 12A for bridging the distance A between the head 5 of the vehicle occupant 3 and the at least one airbag 12A has different deployment depths ET 1, ET2.
  • the evaluation and control unit 14 determines a first trigger variable which activates the at least one airbag 12A with a first deployment depth ET 1 when the determined distance A is below a first threshold value or corresponds to the first threshold value.
  • the evaluation and control unit 14 determines a second trigger variable which activates the at least one airbag 12A with a second greater deployment depth ET2 if the determined distance A is above the first threshold value. In addition, the evaluation and control unit 14 issues a warning message to the occupant 3 via an output unit 19, which indicates an unsafe seating position of the occupant 3 when the mean distance A is above a second threshold value which is greater than the first threshold value.
  • the occupant 3 If the determined distance A is above the second threshold value, then the occupant 3 is too far away from the airbag 12A to be deployed, so that its second deployment depth ET2 is not sufficient to accommodate the occupant in the event of a crash. Therefore, by issuing the warning message, the occupant 3 is informed or warned in good time of a deployment of the airbag 12A if he has assumed an unsafe seating position.
  • the airbag 12A is shown as a driver airbag with different deployment depths ET1, ET2.
  • the passenger airbag (not shown) is designed as an airbag 12A with different deployment depths ET1, ET2.
  • the restraint system 10 also comprises two airbags 12 designed as knee airbags 12B, which have only one deployment depth. Again, only the knee air bag 12B is shown for the driver. The knee airbag 12B for the passenger is not shown.
  • the restraint system 10 can also include further airbags 12, such as curtain airbags, window airbags, roof airbags, etc.
  • the illustrated airbag 12A comprises at least one tension band, which limits deployment of the at least one airbag 12A to the first deployment depth ET1.
  • the evaluation and control unit 14 can release the at least one tension band via a corresponding trigger signal and a release element, not shown, in order to activate the at least one airbag 12A with the second greater deployment depth ET2.
  • the restraint system 10 also includes an airbag generator 17 for the at least one airbag 12A.
  • the evaluation and control unit 14 controls the airbag generator 17 in order to set an inflation speed of the at least one airbag 12A as a function of the determined distance A. If the determined distance A is below a third threshold value or is equal to the third threshold value, which is smaller than the first threshold value, the evaluation and control unit 14 controls the airbag generator 17 such that the airbag generator 17 controls the at least one airbag 12A with one inflates at first speed. If the determined distance A is above the third threshold value, the evaluation and control unit 14 controls the airbag generator 17 in such a way that the airbag generator 17 inflates the at least one airbag 12A at a higher second speed.
  • the at least one airbag 12A comprises at least one valve, not shown, in order to adjust the damping behavior of the at least one airbag 12A.
  • the evaluation and control unit 14 can at least determine a trigger size of the at least one valve on the basis of the comparison of the determined distance A with stored reference values and output corresponding trigger signals to the at least one valve in order to adjust the damping behavior of the at least one airbag 12A.
  • the at least one sensor system 16 in the exemplary embodiment shown comprises one arranged in the roof area Distance sensor system 16A, which determines the head position of a vehicle occupant 3 directly.
  • the distance sensor system 16A is designed as a camera system.
  • the distance sensor system 16A can also use other suitable systems, such as, for example, an ultrasound system or an infrared system, in order to determine the head position of a vehicle occupant 3 directly.
  • the at least one sensor system 16 includes a seat position sensor system 16B, which indirectly determines the head position of a vehicle occupant 3.
  • the seat position sensor system 16B comprises a seat cushion sensor 16.1, which detects a set fleas and a longitudinal position of the seat cushion of the corresponding seat 7, a seat back sensor 16.2, which detects an adjusted inclination of the seat back of the seat 7, and a headrest sensor 16.3, which one set position of the headrest of the seat 7 detected.
  • the seat back is made in several parts. In such a multi-part seat back, an upper area of the seat back, which is also referred to as a backrest head, can be adjusted by at least one corresponding adjustment element relative to a lower area of the seat back.
  • at least one further sensor can detect a set position of the upper region of the seat back or of the backrest head relative to a lower region of the seat back.
  • the at least one sensor system 16 in the exemplary embodiment shown comprises a steering wheel sensor system 16C, which determines a current steering wheel position.
  • the evaluation and control unit 14 takes into account the steering wheel position when determining the distance A between the head 5 of a vehicle occupant 3 and the airbag 12A in the idle state.
  • the restraint system 10 comprises a belt tensioner 11.
  • the evaluation and control unit 14 determines at least one trigger size of the belt tensioner 11 using the comparison of the determined distance A with stored reference values and transmits corresponding trigger signals to the belt tensioner 11.
  • the restraint system 10 also includes an adaptive system Belt force limiter 13, at which different force levels can be set, the evaluation and control unit 14 determining at least one trigger variable of the adaptive belt force limiter 13 on the basis of the comparison of the determined distance A with stored reference values and transmitting corresponding trigger signals to the adaptive belt force limiter 13.
  • the functions of the belt tensioner 11 and the adaptive belt force limiter 13 in the exemplary embodiment shown can also be adapted to a position of the occupant 3, the evaluation and control unit 14 determining or estimating the position of the occupant 3 based on the determined head position of the occupant 3 .
  • the seat 7 leads out as an “active” seat 7.
  • the seat 7 has a seat length and seat height adjustment 7.1, a seat back adjustment 7.2 and a headrest adjustment 7.3, by means of which the position and position of the seat 7 can be adjusted via corresponding adjustment elements.
  • the adjusting element can include, for example, an electrical or hydraulic or pneumatic actuator.
  • the evaluation and control unit 14 can change a position of the active seat 7 via the adjustment elements before or in the event of a triggering of the restraint system 10 such that the distance A between the head 5 of the vehicle occupant 3 and the airbag 12A in the region of defined thresholds.
  • the evaluation and control unit 14 controls the seat length and seat height adjustment 7.1, the seat back adjustment 7.2 and the headrest adjustment 7.3 such that the corresponding seat 7 is moved in the direction of the steering wheel 9 or in the direction of the instrument panel when the determined Ab A was greater than the second threshold. At the same time, the seat back is raised and the headrest is applied to the head 5 of the occupant 3.
  • the seat back is made in several parts.
  • the evaluation and control unit 14 can also control the upper region of the seat backrest or the backrest head via at least one corresponding Adjust the adjusting element relative to a lower region of the seat back and move it towards the head 5 of the occupant if the determined distance A is greater than the second threshold value.
  • a head position of a vehicle occupant 3 is continuously determined at a reference point in the vehicle 1 in a step S100.
  • a distance A between the head 5 of the vehicle occupant 3 and the at least one airbag 12 in the idle state is determined from the determined head position of the vehicle occupant 3.
  • the determined distance A is evaluated by a comparison with stored reference values, and at least one deployment variable of the at least one airbag 12 is determined on the basis of the comparison.
  • At least one airbag 12A for bridging the distance A between the head 5 of the vehicle occupant 3 and the at least one airbag 12A has different deployment depths ET1, ET2. It is checked in step S130 whether the determined distance A is below a first threshold value or is equal to the first threshold value. If the determined distance A is below the first threshold value or if the determined distance A corresponds to the first threshold value, then a first trigger size is determined in step S140 which activates the at least one airbag 12A with a first deployment depth ET1. The method 100 then continues with a step S180, in which it is checked whether the restraint system 10 is triggered.
  • step S150 a second trigger variable is determined in step S150, which activates the at least one airbag 12A with a greater second deployment depth ET2. It is then checked in step S160 whether the determined distance A is above a second threshold value which is greater than the first threshold value. If the determined distance A is not above the second threshold value, then the method 100 continues with step S180, in which it is checked whether there is a triggering case of the restraint system 10. If the determined distance A is above the second threshold, then In step S170, a warning message is issued to the occupant 3, which indicates an unsafe seating position. The method 100 then continues with step S180, in which it is checked whether the restraint system 10 is triggered.
  • step S180 If the check in step S180 shows that there is no triggering event of the restraint system 10, then the method 100 is repeated starting with step S100. If the check in step S180 shows that the restraint system 10 is triggered, the at least one airbag 12A with the determined trigger size is activated in step S190.
  • an inflation speed of the at least one airbag 12A is set as a function of the determined distance A.
  • the at least one airbag 1 is inflated at a first speed if the determined distance A is below a third threshold value or is equal to the third threshold value, which is smaller than the first threshold value.
  • the at least one airbag 12A is inflated at a higher second speed if the determined distance is above the third threshold value.
  • a damping behavior of the at least one airbag 12A is set as a function of the determined distance.
  • the at least one trigger variable for setting the damping behavior is determined on the basis of the comparison of the determined distance A with stored reference values.
  • Corresponding trigger signals are also output to the at least one airbag 12A.
  • a position of the seat 7 is also changed such that the distance A between the head 5 of the vehicle occupant 3 and the at least one airbag 12A is in the range of the defined threshold values.
  • the head position of a vehicle occupant 3 is determined directly by means of a distance sensor system 16A and indirectly by means of a seat position sensor system 16B.
  • determining the distance A between the head 5 of the vehicle occupant 3, here the driver, and the at least one air bag 12 takes into account a steering wheel position in the idle state.
  • At least one trigger size of the belt tensioner 11 and the adaptive belt force limiter 13, at which different force levels can be set is determined on the basis of the comparison of the determined distance A with stored reference values, and corresponding trigger signals on the belt tensioner 11 and on the adaptive belt force limiter 13 transmitted.
  • Embodiments of the invention allow occupants of the first row of seats (driver and front passenger) to take a comfortable sitting position while driving.
  • the occupant can be informed or warned in good time of an airbag deployment if he has assumed an unsafe seating position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

Selon l'invention, au moins un airbag (12A) présente pour couvrir une distance entre la tête du passager du véhicule et l'au moins un airbag (12A) des profondeurs de déploiement différentes, une première grandeur de déclenchement étant déterminée, laquelle active l'au moins un airbag (12A) avec une première profondeur de déploiement, lorsque la distance déterminée est inférieure à une première valeur de seuil ou correspond à la première valeur de seuil, une deuxième grandeur de déclenchement étant déterminée, laquelle active l'au moins un airbag (12A) avec une deuxième profondeur de déploiement plus grande, lorsque la distance déterminée est supérieure à la valeur de seuil, et un message d'avertissement étant transmis au passager, lequel indique une position de siège dangereuse, lorsque la distance déterminée est supérieure à une deuxième valeur de seuil, laquelle est supérieure à la première valeur de seuil.
EP19829405.0A 2019-01-23 2019-12-03 Procédé pour faire fonctionner un système de retenue et système de retenue pour un véhicule Withdrawn EP3844033A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019200813.5A DE102019200813B4 (de) 2019-01-23 2019-01-23 Verfahren zum Betreiben eines Rückhaltesystems und Rückhaltesystem für ein Fahrzeug
PCT/EP2019/083467 WO2020151863A1 (fr) 2019-01-23 2019-12-03 Procédé pour faire fonctionner un système de retenue et système de retenue pour un véhicule

Publications (1)

Publication Number Publication Date
EP3844033A1 true EP3844033A1 (fr) 2021-07-07

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Application Number Title Priority Date Filing Date
EP19829405.0A Withdrawn EP3844033A1 (fr) 2019-01-23 2019-12-03 Procédé pour faire fonctionner un système de retenue et système de retenue pour un véhicule

Country Status (5)

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US (1) US20220001823A1 (fr)
EP (1) EP3844033A1 (fr)
CN (1) CN113165591A (fr)
DE (1) DE102019200813B4 (fr)
WO (1) WO2020151863A1 (fr)

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US11390230B2 (en) 2019-10-24 2022-07-19 GM Global Technology Operations LLC System and method to establish a deployment force for an airbag
CN113415251B (zh) * 2021-07-22 2022-11-18 一汽奔腾轿车有限公司 一种自适应乘员约束系统及其控制方法
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