WO1999047383A1 - A safety arrangement in a motor vehicle - Google Patents

A safety arrangement in a motor vehicle Download PDF

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Publication number
WO1999047383A1
WO1999047383A1 PCT/SE1999/000371 SE9900371W WO9947383A1 WO 1999047383 A1 WO1999047383 A1 WO 1999047383A1 SE 9900371 W SE9900371 W SE 9900371W WO 9947383 A1 WO9947383 A1 WO 9947383A1
Authority
WO
WIPO (PCT)
Prior art keywords
roll
vehicle
angular speed
threshold
angle
Prior art date
Application number
PCT/SE1999/000371
Other languages
French (fr)
Inventor
Jonas BÄRGMAN
Dion Kruse
Original Assignee
Autoliv Development Ab
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 Autoliv Development Ab filed Critical Autoliv Development Ab
Priority to AU29672/99A priority Critical patent/AU2967299A/en
Publication of WO1999047383A1 publication Critical patent/WO1999047383A1/en

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
    • B60R21/013—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 collisions, impending collisions or roll-over
    • B60R21/0132—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 collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
    • 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
    • B60R21/013—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 collisions, impending collisions or roll-over
    • 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
    • B60R2021/0002—Type of accident
    • B60R2021/0018—Roll-over
    • 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
    • B60R21/013—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 collisions, impending collisions or roll-over
    • B60R2021/01306—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 collisions, impending collisions or roll-over monitoring vehicle inclination
    • 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
    • B60R21/013—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 collisions, impending collisions or roll-over
    • B60R21/0132—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 collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
    • B60R2021/01327—Angular velocity or angular acceleration
    • 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
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/232—Curtain-type airbags deploying mainly in a vertical direction from their top edge

Definitions

  • THE PRESENT INVENTION relates to a safety arrangement, and more particularly relates to a safety arrangement to be incorporated into a motor vehicle.
  • Roll-over accidents are the cause of a substantial proportion of all motor vehicle fatalities each year, even though rollover accidents only make up a relatively small proportion of the accidents that occur. Most of the injuries are in the head/face region, and in most cases are due to contact with the ground, due to full or partial ejection. Although the risk of injury is reduced by wearing a seat belt, nevertheless, in any roll over accident, the risk of injury is very high.
  • a roll-over accident may be initiated by various mechanisms but, in particular, may be initiated by the vehicle sliding into a curb (or other "solid” object) or sliding on a friction plane, such as soil. In such cases a lateral force acts on the wheels of the vehicle below the centre of gravity. Thus a torque is created that might "trip” the vehicle into a roll-over, and this type of accident 2 may be called a "tripped roll-over” accident.
  • tripped roll over accidents constitute a substantial proportion of all roll-over accidents.
  • Another type of roll-over accident occurs when the vehicle moves, possibly with a sliding action, into a region where the ground slopes.
  • An example of this is where a vehicle inadvertently moves towards a ditch provided at the side of the road.
  • two of the wheels on one side of the vehicle may temporarily be located above the sloping region of the ground or, in other cases, whilst one wheel on the side of the vehicle where the ground slopes may be in contact with the ground, the other wheel will be in the air.
  • a vertical force provided by gravity, creates a torque that might cause a roll-over.
  • the inflatable curtain is a restraint system in the form of an air-bag that is initially located in the roof of the motor vehicle just above the door opening, the air-bag being adapted, upon inflation, to form a substantially rigid curtain located adjacent the side windows of the vehicle.
  • the air-bag prevents the head of the occupant from passing through the window opening. It is now thought that an inflatable curtain could be used to prevent occupant ejection, and hence prevent injuries due to contact with the ground, in a roll over accident.
  • an appropriate triggering arrangement is required, and the present invention seeks to provide a safety arrangement which incorporates an appropriate triggering system.
  • a safety arrangement in a motor vehicle comprising a roll sensor apparatus adapted to sense conditions indicative of a roll-over accident, to provide an output signal when a roll of the vehicle is anticipated or occurs, to trigger actuation of a safety device to provide protection for an occupant of the vehicle during a roll-over accident, the roll sensor apparatus being responsive to both an angular parameter such as the angle of roll ( ⁇ x ) of the vehicle or angular speed of the vehicle ( ⁇ x ) around the longitudinal axis thereof, and the lateral acceleration (a y ) of the vehicle.
  • the roll sensor apparatus comprises an angular speed sensor to measure the angle of roll (ot ⁇ ) and/or angular speed ( ⁇ x ) and an accelerometer to measure the lateral acceleration (a y ).
  • the roll sensor apparatus is adapted so that the triggering signal is generated only if the angle of roll ( ⁇ ) or the angular speed ( ⁇ x ) exceeds a predetermine threshold, and the lateral acceleration (a y ) also exceeds a predetermined threshold.
  • the threshold for angle of roll ( ⁇ x ) or angular speed ( ⁇ x ) is a constant.
  • the threshold for angle of roll ( ⁇ x ) or angular speed ( ⁇ x ) is a function of at least one other parameter.
  • the threshold for the angular speed ( ⁇ x ) is a function of the roll angle (ot ⁇ ).
  • the threshold for angle of roll ( ⁇ x ) or angular speed ( ⁇ x ) is a function of lateral acceleration (a y ).
  • the threshold for lateral acceleration is a constant.
  • the threshold for lateral acceleration is a function of at least one parameter.
  • the safety device comprises an inflatable side curtain.
  • FIGURE 1 is a block diagram of one embodiment of the invention
  • FIGURE 2 is a block diagram of another embodiment of the invention.
  • FIGURE 3 is a block diagram of another embodiment of the invention.
  • a safety arrangement in accordance with the present invention comprises a sensor 1 adapted to sense the angle of roll ⁇ x or the angular speed ⁇ x of a motor vehicle about the longitudinal axis of the vehicle.
  • the arrangement also comprises a sensor 2 adapted to sense the lateral acceleration a y of the motor vehicle, that is to say the acceleration of the vehicle in a direction which is horizontal and which is substantially perpendicular to the longitudinal axis of the vehicle.
  • the angular speed sensor 1 is connected to a processor 3 where the instantaneous angle of roll ⁇ x or angular speed ⁇ x is compared with a threshold such as an angular speed threshold ⁇ j. In this example, if the instantaneous angular speed ⁇ x exceeds the threshold such as an angular speed ⁇ i, a signal is passed from the processor 3 to an AND gate 4.
  • the output of the lateral acceleration sensor 2 is passed to a processor 5 where the lateral acceleration a y is compared with a threshold value ai . If the instantaneous lateral acceleration a y exceeds the threshold value a;, then a signal is passed from the processor 5 to the AND gate 4.
  • the AND gate 4 receives signals from both the processor 3 and the processor 5, an output signal is generated which is passed to a safety device 6, to actuate the safety device.
  • the safety device 6 is adapted to protect an occupant of a motor vehicle during a roll over accident.
  • the safety device may comprise an inflatable curtain in the form of an air-bag which, when inflated, is located adjacent the side windows of the motor vehicle in order to minimise the risk of the head of the occupant of the vehicle passing through the window opening.
  • the safety device may comprise, for example, a seat belt pre-tensioner.
  • the safety device is activated only if the angle of roll ⁇ x and/or angular speed ⁇ x exceeds a predetermined threshold, and if lateral acceleration a y also exceeds a certain threshold.
  • the thresholds could be constant thresholds or could be functions of other parameters.
  • the threshold for angular acceleration ⁇ x might be a function of the lateral acceleration, a y and/or the roll angle ⁇ x .
  • Figure 1 is a safety arrangement which comprises a roll sensor apparatus adapted to sense conditions indicative of a roll over accident.
  • An output signal is provided when a roll of the vehicle is anticipated, or when a roll-over actually occurs, the output signal triggers activation of a safety device to provide protection for the occupant of the vehicle.
  • the roll sensor apparatus is responsive to both an angular parameter, such as the angle of roll ⁇ x of the vehicle or angular speed of the vehicle co x , and also the lateral acceleration a y of the vehicle. 7
  • FIG. 2 illustrates an alternative arrangement in accordance with the invention, where some parts are identical with the parts described above, these parts being identified by identical reference numbers.
  • a processor 7 is provided adapted to receive signals from the angle of roll or angular speed sensor 1 and the lateral acceleration sensor 2.
  • the instantaneous angle of roll or angular speed ⁇ ft is compared with a threshold value, such as the value ⁇ > ⁇ (a y ) which is a threshold value which is a function of the instantaneous lateral acceleration.
  • the output of the sensor is provided directly to the safety device 6, to actuate the safety device.
  • the angle of roll, or in this example the instantaneous angular speed ⁇ x is compared with a threshold value ⁇ > ⁇ (a y ) which is a function of the instantaneous lateral acceleration.
  • the instantaneous lateral acceleration a y is compared with a threshold value ai .
  • This threshold value may be fixed or may be a function of a parameter such as roll angle ( ⁇ x ).
  • Outputs of the processors 5 and 7 are fed to the AND gate 4, to generate an output signal 2 to deploy the safety device 6.

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

Abstract

A safety arrangement is provided in a motor vehicle. The safety arrangement comprises a roll sensor apparatus to sense conditions indicative of a roll-over accident to provide an output signal (4) to trigger actuation of a safety device (6). The roll sensor apparatus is responsive to both an angular parameter such as angular speed of the vehicle (φx (1) - for example, whether the angular speed of the vehicle exceeds a threshold (3) and also responds to the lateral acceleration (ay) (2) - again comparing the latter acceleration with a threshold (5). One or both of the thresholds used for comparison purposes may be a function of another parameter of the vehicle, or may be fixed thresholds.

Description

A SAFETY ARRANGEMENT IN A MOTOR VEHICLE
THE PRESENT INVENTION relates to a safety arrangement, and more particularly relates to a safety arrangement to be incorporated into a motor vehicle.
A substantial number of people each year are injured or killed in motor vehicle accidents in which the vehicle rolls completely or partially over. Accidents in which a vehicle rolls by at least 90° relative to its longitudinal axis are known as "roll-over accidents". Roll-over accidents are the cause of a substantial proportion of all motor vehicle fatalities each year, even though rollover accidents only make up a relatively small proportion of the accidents that occur. Most of the injuries are in the head/face region, and in most cases are due to contact with the ground, due to full or partial ejection. Although the risk of injury is reduced by wearing a seat belt, nevertheless, in any roll over accident, the risk of injury is very high.
A roll-over accident may be initiated by various mechanisms but, in particular, may be initiated by the vehicle sliding into a curb (or other "solid" object) or sliding on a friction plane, such as soil. In such cases a lateral force acts on the wheels of the vehicle below the centre of gravity. Thus a torque is created that might "trip" the vehicle into a roll-over, and this type of accident 2 may be called a "tripped roll-over" accident. These tripped roll over accidents constitute a substantial proportion of all roll-over accidents.
Another type of roll-over accident occurs when the vehicle moves, possibly with a sliding action, into a region where the ground slopes. An example of this is where a vehicle inadvertently moves towards a ditch provided at the side of the road. In such a situation, two of the wheels on one side of the vehicle may temporarily be located above the sloping region of the ground or, in other cases, whilst one wheel on the side of the vehicle where the ground slopes may be in contact with the ground, the other wheel will be in the air. In such a case, a vertical force, provided by gravity, creates a torque that might cause a roll-over.
It has been proposed to provide motor vehicles with a so-called "inflatable curtain". The inflatable curtain is a restraint system in the form of an air-bag that is initially located in the roof of the motor vehicle just above the door opening, the air-bag being adapted, upon inflation, to form a substantially rigid curtain located adjacent the side windows of the vehicle. The air-bag prevents the head of the occupant from passing through the window opening. It is now thought that an inflatable curtain could be used to prevent occupant ejection, and hence prevent injuries due to contact with the ground, in a roll over accident.
For such an arrangement to be feasible, an appropriate triggering arrangement is required, and the present invention seeks to provide a safety arrangement which incorporates an appropriate triggering system.
It has been proposed to provide a sensor arrangement to sense a roll-over accident (see GB-A-2,314,187) in which the generation of a triggering signal is 3 dependent upon the angular speed of the vehicle, and also the instantaneous angle of rotation of the vehicle. Whilst an arrangement of this type does have some value, for example in the case of a slope roll-over, it is now felt that if a safety device needs to be deployed very rapidly, then a sensor arrangement which uses this type of algorithm will not respond sufficiently rapidly. In other words, the arrangement is not able to distinguish "roll" from "not roll" early enough to deploy the safety device in time in certain types of accident including a tripped roll-over accident.
Also, of course, if angular speed is determined by using an angular speed sensor, and if the angle of roll is determined by integrating the output from the angular speed sensor, there is a risk that an inadvertent deployment of the safety device might arise if there is an error in the angular speed sensor.
According to this invention there is provided a safety arrangement in a motor vehicle, the safety arrangement comprising a roll sensor apparatus adapted to sense conditions indicative of a roll-over accident, to provide an output signal when a roll of the vehicle is anticipated or occurs, to trigger actuation of a safety device to provide protection for an occupant of the vehicle during a roll-over accident, the roll sensor apparatus being responsive to both an angular parameter such as the angle of roll (αx) of the vehicle or angular speed of the vehicle (ωx) around the longitudinal axis thereof, and the lateral acceleration (ay) of the vehicle.
Preferably the roll sensor apparatus comprises an angular speed sensor to measure the angle of roll (otχ) and/or angular speed (ωx) and an accelerometer to measure the lateral acceleration (ay). 4 Conveniently the roll sensor apparatus is adapted so that the triggering signal is generated only if the angle of roll (θχ) or the angular speed (ωx ) exceeds a predetermine threshold, and the lateral acceleration (ay) also exceeds a predetermined threshold.
Advantageously the threshold for angle of roll (αx) or angular speed (ωx) is a constant.
Alternatively the threshold for angle of roll (αx) or angular speed (ωx) is a function of at least one other parameter.
Conveniently the threshold for the angular speed (ωx) is a function of the roll angle (otχ).
In one embodiment the threshold for angle of roll (αx) or angular speed (ωx) is a function of lateral acceleration (ay).
It is envisaged that in one embodiment the threshold for lateral acceleration is a constant.
Alternatively the threshold for lateral acceleration is a function of at least one parameter.
In a preferred embodiment of the invention the safety device comprises an inflatable side curtain.
In order that the invention may be more readily understood, and so that further features thereof may be appreciated, the invention will now be 5 described, by way of example, with reference to the accompanying drawings in which:
FIGURE 1 is a block diagram of one embodiment of the invention,
FIGURE 2 is a block diagram of another embodiment of the invention, and
FIGURE 3 is a block diagram of another embodiment of the invention,
Referring initially to Figure 1 of the accompanying drawings, a safety arrangement in accordance with the present invention comprises a sensor 1 adapted to sense the angle of roll αx or the angular speed ωx of a motor vehicle about the longitudinal axis of the vehicle. The arrangement also comprises a sensor 2 adapted to sense the lateral acceleration ay of the motor vehicle, that is to say the acceleration of the vehicle in a direction which is horizontal and which is substantially perpendicular to the longitudinal axis of the vehicle.
The angular speed sensor 1 is connected to a processor 3 where the instantaneous angle of roll αx or angular speed ωx is compared with a threshold such as an angular speed threshold ωj. In this example, if the instantaneous angular speed ωx exceeds the threshold such as an angular speed ωi, a signal is passed from the processor 3 to an AND gate 4.
The output of the lateral acceleration sensor 2 is passed to a processor 5 where the lateral acceleration ay is compared with a threshold value ai . If the instantaneous lateral acceleration ay exceeds the threshold value a;, then a signal is passed from the processor 5 to the AND gate 4. When the AND gate 4 receives signals from both the processor 3 and the processor 5, an output signal is generated which is passed to a safety device 6, to actuate the safety device. The safety device 6 is adapted to protect an occupant of a motor vehicle during a roll over accident. The safety device may comprise an inflatable curtain in the form of an air-bag which, when inflated, is located adjacent the side windows of the motor vehicle in order to minimise the risk of the head of the occupant of the vehicle passing through the window opening. Alternatively the safety device may comprise, for example, a seat belt pre-tensioner.
It is to be noted that in the arrangement illustrated in Figure 1, the safety device is activated only if the angle of roll αx and/or angular speed ωx exceeds a predetermined threshold, and if lateral acceleration ay also exceeds a certain threshold. The thresholds could be constant thresholds or could be functions of other parameters. Thus, for example, the threshold for angular acceleration ωx might be a function of the lateral acceleration, ay and/or the roll angle αx.
Consequently the arrangement of Figure 1 is a safety arrangement which comprises a roll sensor apparatus adapted to sense conditions indicative of a roll over accident. An output signal is provided when a roll of the vehicle is anticipated, or when a roll-over actually occurs, the output signal triggers activation of a safety device to provide protection for the occupant of the vehicle. The roll sensor apparatus is responsive to both an angular parameter, such as the angle of roll αx of the vehicle or angular speed of the vehicle cox, and also the lateral acceleration ayof the vehicle. 7
Figure 2 illustrates an alternative arrangement in accordance with the invention, where some parts are identical with the parts described above, these parts being identified by identical reference numbers.
In the arrangement of Figure 2, a processor 7 is provided adapted to receive signals from the angle of roll or angular speed sensor 1 and the lateral acceleration sensor 2. In the processor 7, the instantaneous angle of roll or angular speed ωft is compared with a threshold value, such as the value α>ι(ay) which is a threshold value which is a function of the instantaneous lateral acceleration. The output of the sensor is provided directly to the safety device 6, to actuate the safety device.
It is to be appreciated that, in a further embodiment, as shown in Figure 3, (where again the same reference numerals are used for components that have been described above), the output of the angle of roll or angular speed sensor 1 is fed to a processor 7 while the output of the lateral acceleration sensor is fed to a processor 5 and also to the processor 7.
In the processor 7, the angle of roll, or in this example the instantaneous angular speed ωx is compared with a threshold value α>ι(ay) which is a function of the instantaneous lateral acceleration. In the processor 5, the instantaneous lateral acceleration ay is compared with a threshold value ai . This threshold value may be fixed or may be a function of a parameter such as roll angle (αx). Outputs of the processors 5 and 7 are fed to the AND gate 4, to generate an output signal 2 to deploy the safety device 6.
In utilising embodiments of the invention, it is possible to use a relatively low threshold value for angle of roll or angular velocity, since triggering is not only dependent upon angle of roll or angular velocity or the 8 output of the angular speed sensor. Instead, in embodiments of the invention it is necessary, for activation of the safety device to occur, for there to be a predetermined minimum angle of roll or angular speed, and also a predetermined lateral acceleration.

Claims

CLAIMS:
1. A safety arrangement in a motor vehicle, the safety arrangement comprising a roll sensor apparatus adapted to sense conditions indicative of a roll-over accident, to provide an output signal when a roll of the vehicle is anticipated or occurs, to trigger actuation of a safety device to provide protection for an occupant of the vehicle during a roll-over accident, the roll sensor apparatus being responsive to both an angular parameter such as the angle of roll (αx) of the vehicle or angular speed of the vehicle (ωx) around the longitudinal axis thereof, and the lateral acceleration (ay) of the vehicle.
2. A safety arrangement according to Claim 1 wherein the roll sensor apparatus comprises an angular speed sensor to measure the angle of roll (θχ) and/or angular speed (ωx) and an accelerometer to measure the lateral acceleration (ay).
3. An arrangement according to Claim 1 or Claim 2, wherein the roll sensor apparatus is adapted so that the triggering signal is generated only if the angle of roll (αx) or the angular speed (ωx) exceeds a predetermined threshold, and the lateral acceleration (ay) also exceeds a predetermined threshold.
4. An arrangement according to Claim 3 wherein the threshold for angle of roll or angular speed is a constant.
5. An arrangement according to Claim 3 wherein the threshold for angle of roll (αx) or angular speed (ωx) is a function of at least one other parameter. 10
6. An arrangement according to Claim 5 wherein the threshold for the angular speed (ωx) is a function of the roll angle (αx).
7. An arrangement according to Claim 5 wherein the threshold for angle of roll (αx) or angular speed (ωx) is a function of lateral acceleration (ay).
8. An arrangement according to any one of Claims 3 to 7 wherein the threshold for lateral acceleration is a (ay) constant.
9. An arrangement according to any one of Claims 3 to 7 wherein the threshold for lateral acceleration (ay) is a function of at least one parameter.
10. A safety arrangement according to any one of the preceding Claims wherein the safety device comprises an inflatable side curtain.
PCT/SE1999/000371 1998-03-17 1999-03-11 A safety arrangement in a motor vehicle WO1999047383A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU29672/99A AU2967299A (en) 1998-03-17 1999-03-11 A safety arrangement in a motor vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9805690A GB2335521B (en) 1998-03-17 1998-03-17 Improvements in or relating to a safety arrangement
GB9805690.6 1998-03-17

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WO1999047383A1 true WO1999047383A1 (en) 1999-09-23

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WO2001032475A1 (en) * 1999-11-03 2001-05-10 Autoliv Development Ab Improvements in or relating to a control system
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EP1270337A3 (en) * 2001-06-28 2003-10-01 Robert Bosch Corporation A rollover-sensing system for a vehicle and method of operating the same
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US7162343B2 (en) 2004-09-17 2007-01-09 Ford Global Technologies, Llc Intelligent vehicle rollover detection methods and systems
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001032475A1 (en) * 1999-11-03 2001-05-10 Autoliv Development Ab Improvements in or relating to a control system
WO2002085675A1 (en) * 2001-04-23 2002-10-31 Siemens Aktiengesellschaft Control unit and method for identifying the form of impact in a passenger protection system
EP1270337A3 (en) * 2001-06-28 2003-10-01 Robert Bosch Corporation A rollover-sensing system for a vehicle and method of operating the same
DE102006048414B3 (en) * 2006-10-12 2008-06-26 Siemens Ag Method and arrangement for detecting a rollover situation
US7996132B2 (en) 2007-11-29 2011-08-09 Robert Bosch Gmbh Fast sensing system and method for soil- and curb-tripped vehicle rollovers
JP2020069814A (en) * 2018-10-29 2020-05-07 トヨタ自動車株式会社 Control device of seat belt for vehicle
US11364873B2 (en) * 2018-10-29 2022-06-21 Toyota Jidosha Kabushiki Kaisha Control device for vehicle seat belt
JP7135723B2 (en) 2018-10-29 2022-09-13 トヨタ自動車株式会社 Vehicle seat belt controller

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AU2967299A (en) 1999-10-11
GB2335521B (en) 2001-11-28
GB2335521A (en) 1999-09-22
GB9805690D0 (en) 1998-05-13

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