WO2004030999A1 - Verfahren zur auslösung eines rückhaltesystems in einem fahrzeug - Google Patents
Verfahren zur auslösung eines rückhaltesystems in einem fahrzeug Download PDFInfo
- Publication number
- WO2004030999A1 WO2004030999A1 PCT/DE2003/001775 DE0301775W WO2004030999A1 WO 2004030999 A1 WO2004030999 A1 WO 2004030999A1 DE 0301775 W DE0301775 W DE 0301775W WO 2004030999 A1 WO2004030999 A1 WO 2004030999A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- triggering
- impact
- crash
- speed
- vehicle
- Prior art date
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
- 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
- B60R2021/01322—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 comprising variable thresholds, e.g. depending from other collision parameters
Definitions
- the invention relates to a method for triggering a restraint system in a vehicle according to the preamble of the independent claim.
- the vehicle with the features of the independent patent claim has the advantage that the triggering times for fast and hard crashes are better met according to the requirements, with the transferability of triggering behavior to crash types or accident types being guaranteed with fewer crash tests.
- the essence of the method is that, depending on the vehicle, there is a speed limit G above which a linear regression line does not describe the deployment behavior of the airbag very well. These linear regression lines are found by crash tests and in one Speed tripping time diagram entered.
- the procedure according to the invention makes it possible to transfer the triggering behavior from knowledge of the triggering behavior in the lower speed range to the speed range which lies between the speed limit G and the speed P. This means, for example, a speed range between 70 and 130 km / h.
- the triggering characteristic is linear between the first and the second impact speed value.
- the crash tests which are carried out, for example, at 15, 20, 25 to 70 km / h, lead to a tripping characteristic with a linear behavior.
- a trigger characteristic is the function that defines the relationship between impact speed and trigger time for a given crash type. Each crash type can have its own trigger characteristic.
- the trigger characteristics can result from the requirements of the vehicle manufacturer. These requirements determine when the restraint means, for example an airbag or a belt tensioner, should be triggered in the event of a crash onto a given barrier at a specific impact speed.
- a crash or accident type is understood here to mean, for example, a frontal impact, an offset crash, a side impact, a rear impact, an impact on a hard bar, an impact on a soft barrier and a pile crash, and a rollover process.
- the type of accident describes the type of accident.
- a device for triggering a restraint system with the method according to the invention includes, in particular, a control unit that is equipped with the corresponding sensors, for example, a pre-crash sensor system for detecting the impact speed and an inertial sensor system for detecting the acceleration in the event of a crash.
- the control unit will then control the restraint system accordingly.
- FIG. 1 shows a block diagram of the device according to the invention
- FIG. 2 shows an impact speed release time diagram
- Figure 3 shows another impact velocity deployment timing diagram.
- the signal is evaluated by an acceleration sensor or a plurality of acceleration sensors.
- the values of signal characteristics are determined for this signal. These values are compared with a threshold or a threshold function and if they exceed this threshold, the return means, for example a pyrotechnic belt tensioner or an airbag of the first or second stage, is triggered.
- this threshold can be selected depending on the impact speed.
- the form of the threshold function depends on the characteristics of the vehicle. To be able to set up the threshold function, an in
- Grid lying at the speed release time level is required. Points of the grid are used as support points with which the threshold values are determined. This grid results from the triggering characteristics explained below at specific speeds, the speed being, for example, 15, 20, 25, ..., 70 km / h.
- the trigger characteristics in the system currently in use are determined by linear regression lines. These straight lines result from the tripping time required by the vehicle manufacturer for a crash test.
- the linear regression lines describe the required trigger behavior well in the speed range in which the crash tests are run. The behavior in the higher speed range, for example for speeds between 70 and 130 km / h and for fast, hard crashes, is described less well if the regression line selir specifies short triggering times, for example shorter than 5 ms.
- a speed limit G is specified from which the linear regression line no longer describes the deployment behavior of the airbag well. Furthermore, there is a speed P which is dependent on the vehicle and at which the return means is either ignited at a specified early point in time or not triggered at all without a detailed distinction between the various types of crash.
- the procedure described here makes it possible to transfer the triggering behavior from knowledge of the triggering behavior in the lower speed range to the speed range which lies between the speed limit G and the speed P.
- FIG. 1 shows the device according to the invention as a block diagram.
- An environment sensor 1 is connected to a control unit 3 via a first data input.
- an acceleration sensor 2 is connected to the control unit 3 at a second data input.
- Control unit 3 is assigned a processor 4, on which an algorithm for calculating the triggering times of a restraint device runs. It is possible that other algorithms for controlling other restraint devices are also processed.
- Control unit 3 is connected to restraint devices 5 via a data output. These restraint devices 5 are, for example, airbags, belt tensioners or a roll bar and thus form the restraint system.
- the control for the return means 5_ can either be in the control unit 3 or in a further control unit for the return means.
- the environment sensor 1 is, for example, a radar or ultrasound sensor or an optical sensor.
- the acceleration sensor 2 serves as an impact sensor, which determines the acceleration resulting from the impact.
- the method described below for determining the tripping characteristics is the basis for the algorithm running in control unit 3.
- a prerequisite for this method is that the triggering characteristics for the crash type under consideration are valid for the lower or middle speed range.
- the position of the limit G is also dependent on the crash type. It can thus be represented, for example, as a straight polyline or any other mathematical function in the speed release time level. This limit can be selected, for example, so that it is essentially above the crash tests carried out by the vehicle manufacturer. For speeds below this limit, the linear tripping characteristics describe the tripping behavior well.
- the triggering characteristics for each crash type can be determined, for example, as follows: One chooses a straight line between P mx and the intersection S CraS - ⁇ y p ⁇ Der point S Cras - type is calculated as the intersection of the boundary of G and the operating characteristic in the lower speed range for the considered crash type.
- Knowledge that has been extracted from the data of the crash tests represents the trigger characteristics from the lower speed range. Since the triggering characteristics are used to define the intersection points S ra s h - ⁇ yp , the knowledge extracted from the crash tests is generalized to the upper speed range. Furthermore, this section-wise linear approach allows the trigger characteristics to be applied to crash types with fewer crash tests can be generalized. In addition, this section-by-section approach has the advantage that the triggering characteristics can be selected steeper for the higher speed range than for the lower. The course thus better corresponds to the ideal, initially steep, then flattening course. The method according to the invention thus represents an optimal compromise between the transferability to other crash types and the quality of the description of the triggering behavior.
- FIG. 2 shows the regression lines that describe the triggering characteristics and various crash tests are defined in a speed triggering time diagram.
- the release time is plotted in ms on the abscess, while the impact speed is shown in km / h on the ordinate.
- Three linear regression lines are shown here, which were drawn through measuring points for crash tests. From the limit 201, the triggering characteristics, which are defined by the regression lines, are no longer valid, since here the impact speed is such that there is a different behavior. Much shorter tripping times should be provided here.
- FIG. 3 now shows in a further speed release time diagram the use of the impact speed values according to the invention in order to control the release behavior accordingly.
- the release time is given in ms on the abscissa, while the impact speed is shown in km / h on the ordinate.
- Three regression lines 301, 302 and 303 are given here for three accident types.
- curve G which defines the speed limit from which these regression lines no longer describe the required release behavior with sufficient accuracy
- the slope of the individual regression lines changes. The slope changes so that they meet at point P m ⁇ x , which is here, for example, at 130 km / h, from this speed a fixed triggering time is specified.
- the area between the speed limit G and the point P max for the individual regression lines can also be interpolated by other curves, which, however, then mean a greater computing effort.
- the left regression line describes the earliest trigger characteristic, while the right regression line 301 indicates the latest trigger characteristic.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/512,756 US7933702B2 (en) | 2002-10-01 | 2003-05-30 | Method for activating a restraint system in a vehicle |
EP03797953A EP1551670B1 (de) | 2002-10-01 | 2003-05-30 | Verfahren zur auslösung eines rückhaltesystems in einem fahrzeug |
DE50312120T DE50312120D1 (de) | 2002-10-01 | 2003-05-30 | Verfahren zur auslösung eines rückhaltesystems in einem fahrzeug |
US13/090,106 US20110254253A1 (en) | 2002-10-01 | 2011-04-19 | Method for activating a restraint system in a vehicle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10245781.6 | 2002-10-01 | ||
DE10245781A DE10245781A1 (de) | 2002-10-01 | 2002-10-01 | Verfahren zur Auslösung eines Rückhaltesystems in einem Fahrzeug |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/090,106 Division US20110254253A1 (en) | 2002-10-01 | 2011-04-19 | Method for activating a restraint system in a vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004030999A1 true WO2004030999A1 (de) | 2004-04-15 |
Family
ID=32010045
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2003/001775 WO2004030999A1 (de) | 2002-10-01 | 2003-05-30 | Verfahren zur auslösung eines rückhaltesystems in einem fahrzeug |
Country Status (4)
Country | Link |
---|---|
US (2) | US7933702B2 (de) |
EP (1) | EP1551670B1 (de) |
DE (2) | DE10245781A1 (de) |
WO (1) | WO2004030999A1 (de) |
Families Citing this family (11)
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DE10109043C1 (de) * | 2001-02-24 | 2002-07-25 | Bosch Gmbh Robert | Verfahren zur Auslösung wenigstens eines Airbags in einem Fahrzeug |
DE10246800A1 (de) * | 2002-10-08 | 2004-04-22 | Robert Bosch Gmbh | Vorrichtung und Ansteuerung eines Rückhaltesystems |
JP3693053B2 (ja) * | 2003-01-07 | 2005-09-07 | 日産自動車株式会社 | 車両衝突状態検出装置 |
US7370721B2 (en) * | 2004-12-03 | 2008-05-13 | Autoliv Asp, Inc. | Seatbelt tensioning device and method |
US20070232983A1 (en) * | 2005-09-30 | 2007-10-04 | Smith Gregory A | Handheld apparatus to deliver active agents to biological interfaces |
DE102009020074B4 (de) * | 2009-05-06 | 2016-12-01 | Continental Automotive Gmbh | Verfahren zur Ansteuerung von Kraftfahrzeuginsassen-Schutzsystemen |
US20120239247A1 (en) * | 2011-03-16 | 2012-09-20 | General Dynamics Land Systems, Inc. | Systems and methods for active mitigation of sudden accelerative forces in vehicles |
CN102898527B (zh) | 2011-07-25 | 2016-12-21 | 三星电子株式会社 | 融合蛋白、药物组合物及预防或治疗癌症的方法 |
US20150066346A1 (en) * | 2013-08-28 | 2015-03-05 | Elwha LLC, a limited liability company of the State of Delaware | Vehicle collision management system responsive to a situation of an occupant of an approaching vehicle |
JP2015048835A (ja) * | 2013-09-04 | 2015-03-16 | トヨタ自動車株式会社 | 燃料供給制御装置 |
US9580033B2 (en) | 2013-11-20 | 2017-02-28 | Ford Global Technologies, Llc | Dual airbags in vehicle with reconfigurable interior |
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2002
- 2002-10-01 DE DE10245781A patent/DE10245781A1/de not_active Withdrawn
-
2003
- 2003-05-30 EP EP03797953A patent/EP1551670B1/de not_active Expired - Lifetime
- 2003-05-30 US US10/512,756 patent/US7933702B2/en not_active Expired - Fee Related
- 2003-05-30 WO PCT/DE2003/001775 patent/WO2004030999A1/de active Application Filing
- 2003-05-30 DE DE50312120T patent/DE50312120D1/de not_active Expired - Lifetime
-
2011
- 2011-04-19 US US13/090,106 patent/US20110254253A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
---|---|
US20050143886A1 (en) | 2005-06-30 |
US7933702B2 (en) | 2011-04-26 |
EP1551670A1 (de) | 2005-07-13 |
US20110254253A1 (en) | 2011-10-20 |
EP1551670B1 (de) | 2009-11-11 |
DE10245781A1 (de) | 2004-04-15 |
DE50312120D1 (de) | 2009-12-24 |
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