EP1957319A1 - Procede et dispositif de commande de moyens de protection de personnes - Google Patents

Procede et dispositif de commande de moyens de protection de personnes

Info

Publication number
EP1957319A1
EP1957319A1 EP06807614A EP06807614A EP1957319A1 EP 1957319 A1 EP1957319 A1 EP 1957319A1 EP 06807614 A EP06807614 A EP 06807614A EP 06807614 A EP06807614 A EP 06807614A EP 1957319 A1 EP1957319 A1 EP 1957319A1
Authority
EP
European Patent Office
Prior art keywords
signal
measure
acceleration sensor
pas
evaluation circuit
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Withdrawn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
EP06807614A
Other languages
German (de)
English (en)
Inventor
Michael Bunse
Marcel Schneider
Christian Rauh
Vincent Judalet
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 EP1957319A1 publication Critical patent/EP1957319A1/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Withdrawn legal-status Critical Current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
    • B60R21/013—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
    • B60R21/0133—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 by integrating the amplitude of the input signal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/0104—Communication circuits for data transmission
    • B60R2021/01047—Architecture
    • B60R2021/01054—Bus
    • B60R2021/01068—Bus between different sensors and airbag control unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01122—Prevention of malfunction
    • B60R2021/01184—Fault detection or diagnostic circuits
    • B60R2021/0119—Plausibility check
    • 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
    • B60R2021/01302—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 body vibrations or noise

Definitions

  • the invention relates to a method and a device for controlling personal protection devices according to the preamble of the independent claims.
  • a method is known by means of which a frontal crash event is plausibilized by comparing acceleration values in the vehicle transverse direction, which are recorded by peripheral sensors, with a threshold. Only if this plausibility check is given can then be permitted on a triggering decision that is indicated by an acceleration signal in the vehicle longitudinal direction.
  • the measure of the vibration energy is compared with respective threshold values, the respective threshold values for belt tensioners or airbags being applied.
  • These thresholds may be constant or may be variable with time or depending on other variables as well as the vibration energy itself or quantities derived therefrom. There is then an adaptive threshold.
  • the evaluation circuit which may be, for example, a microcontroller in a control device for controlling personal protection means, uses the variance of the acceleration signals of the peripheral sensors in order to determine the measure of the vibration energy. It is alternatively possible that other suitable quantities are determined in order to absorb the vibration energy.
  • the acceleration sensors whose signal is used to determine the measure of the vibration energy, each disposed on the sides of the vehicle, preferably in the A, B, C pillar or the side panels or on the seat cross member or the door sills.
  • FIG. 1 shows a block diagram of the device according to the invention
  • FIG. 2 is a flowchart
  • FIG. 3 is a block diagram. description
  • Methods for controlling personal protection devices and / or corresponding devices evaluate a size in order to determine whether the personal protection devices such as airbags, belt tensioners, roll bars, crash-active headrests, etc. are to be controlled, in which case a plausibility check must also be carried out the control only takes place in the case of a real triggering event.
  • This plausibility check is usually carried out by the signal of another sensor than the sensor whose signal is used for the drive decision itself. In the present case, a configuration is used that the
  • This acceleration sensor can be located, for example, in a centrally located control unit or also be outsourced by the control unit and then also centrally, for example in a sensor box.
  • This signal may be the acceleration signal, the integrated acceleration signal or the accumulated acceleration signal or the mean value of the acceleration signal or else the twice integrated acceleration signal or an equivalent variable which is determined with a threshold value which may be fixed or variable.
  • the plausibility signal used is the signal of an acceleration sensor system sensitive in the vehicle transverse direction. In particular, the signal from peripherally arranged acceleration sensors is used for this, ie. H. These sensors are located on the sides of the vehicle. From the signal, the vibration energy occurring in a crash is determined, which is an early measure of the occurrence of a crash. Even in the case of a severe frontal crash, this evaluation allows an early plausibility check.
  • the potential energy of the vibration is in the deflection against the spring force:
  • this variance criterion of at least one peripheral acceleration sensor exceeds an applicable threshold, a mechanical event in the vehicle is concluded which causes a vibration of considerable energy content.
  • the triggering decision of an algorithm for controlling personal protection devices for a frontal crash z. B. be plausibilized based on longitudinal acceleration signals.
  • the applicable threshold can be selected differently for each restraint or personal protection means, such as a belt tensioner or an airbag, in order to achieve an early plausibility check as well as a high robustness of the triggering decision.
  • FIG. 1 shows a block diagram of the device according to the invention.
  • Vehicle longitudinal direction sensitive acceleration sensor ax is connected to a microcontroller ⁇ C, which is arranged for example in a control unit for controlling personal protection means connected.
  • This sensor ax can be inside the controller or outside the controller.
  • the acceleration sensor ax must not only be sensitive in the vehicle longitudinal direction, it may also be inclined to the vehicle longitudinal direction. It is also possible for several sensors to make up the acceleration sensor ax, wherein these acceleration sensors are inclined, for example, to the vehicle longitudinal direction at 45 ° or at another angle. It is also possible that more than one acceleration sensor is arranged in the vehicle longitudinal direction. Interface modules and redundant evaluation in the control unit are not shown here for the sake of simplicity.
  • Peripherally arranged acceleration sensors PAS-R and PAS-L are also connected to the microcontroller .mu.C. These are arranged on the right and left of the vehicle, for example in the
  • the microcontroller .mu.C Via a data input / output, the microcontroller .mu.C is connected to a memory S, which it uses to evaluate the sensor signals and by storing the corresponding algorithms, i. H. the memory S represents writable and non-writable memories.
  • the microcontroller .mu.C not only evaluates the acceleration signals, but also signals from other sensors, such as an occupant classification or recognition 1OS, which may be implemented by force measuring elements, for example. But other sensors, such as environmental sensors or other impact or contact sensors can also be used here.
  • a driving dynamics system can also provide data on this. In response to all these data, the microcontroller .mu.C then controls at least one ignition element Z1 via an ignition circuit control FLIC.
  • a pyrotechnically activatable ignition element as is typical for a pyrotechnically activated belt tensioner or airbag.
  • reversible retaining means are also controllable, such as a reversible, d. H. electric motor driven belt tensioner or a crash-active headrest, which is also electromagnetically controlled.
  • step 200 the acceleration signal obtained by the acceleration sensor ax is added up and compared in method step 201 with an adaptive threshold value. Adaptive means that the threshold value is changed depending on the acceleration signal itself. However, other evaluation algorithms are possible.
  • step 202 it is checked whether this condition, which is ultimately decisive for the Control of personal protection is, has been fulfilled or not. If it is not satisfied, then in method step 207 the method is ended. If, however, it is fulfilled, then the process goes to step 206 and only if the plausibility fulfillment is given, then a decision is made in step 206 on a control.
  • This plausibility condition is started in method step 203 by recording or generating the signals of the peripheral sensors PAS-R and PAS-L and calculating the oscillation energy therefrom in method step 204 in the method exemplified above by means of the variance.
  • the oscillation energy is then subjected to a threshold value analysis in method step 205, specifically the oscillation energies determined in each case on the basis of the signals of the acceleration sensors PAS-R and PAS-L. If only one of the threshold values is exceeded, then the plausibility criterion is given and in step 206 firing can be decided. If, however, none of the criteria is given, then the method is ended in method step 207.
  • the triggering decision is carried out separately for each personal protection device and the corresponding thresholds for the plausibility check are applied as well. Ie. for the airbag or the belt tensioner, these procedures will run parallel. If the personal protective equipment has different levels, then these procedures will also go through different stages.
  • method step 300 the signal of the peripheral acceleration sensor PAS-L is generated and in method step 301 the acceleration signal of the peripheral acceleration sensor PAS-R is generated in each case.
  • the acceleration signal of the peripheral acceleration sensor PAS-L is supplied in method step 302 to the variance criterion described above.
  • This variance representing the vibrational energy is applied to thresholds in steps 305 and 309.
  • the acceleration signal of the peripheral acceleration sensor PAS-R is supplied in method step 303 to the variance criterion described above.
  • the variance determined therewith is applied to the threshold decision makers 304 and 308.
  • the threshold decision makers 304 and 305 are set for the belt tensioner and connected to an OR gate 306.
  • the gate 307 then holds the value thus determined. Ie. If only one of the thresholds 304 or 305 is exceeded, that is, one of the determined variance criteria, then the belt tensioner is controlled. The same applies to the airbag AB.
  • threshold value deciders 308 and 309 are also connected via the outputs to an OR gate 310, which in turn is connected to a hold gate 311, then the plausibility criterion is satisfied.
  • the threshold values for the belt tensioners or the airbags can be carried out adaptively, that is, for example, depending on the variance criterion or the acceleration signals.

Landscapes

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

Abstract

L'invention concerne un dispositif et un procédé de commande de moyens de protection de personnes, un système de capteurs d'accélération, sensible dans la direction longitudinale du véhicule, produisant un premier signal et un deuxième système de capteurs d'accélération sensible dans la direction transversale du véhicule produisant un deuxième signal. En outre, l'invention concerne un circuit d'analyse qui commande en fonction du premier et du deuxième signal les moyens de protection de personnes, le commutateur de commande (µC) déterminant en fonction du deuxième signal au moins une mesure d'une énergie d'oscillation produite en cas de collision, et en fonction de cette mesure, déterminant la commande.
EP06807614A 2005-11-25 2006-10-27 Procede et dispositif de commande de moyens de protection de personnes Withdrawn EP1957319A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005056203A DE102005056203A1 (de) 2005-11-25 2005-11-25 Verfahren und Vorrichtung zur Ansteuerung von Personenschutzmitteln
PCT/EP2006/067864 WO2007060079A1 (fr) 2005-11-25 2006-10-27 Procede et dispositif de commande de moyens de protection de personnes

Publications (1)

Publication Number Publication Date
EP1957319A1 true EP1957319A1 (fr) 2008-08-20

Family

ID=37635825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06807614A Withdrawn EP1957319A1 (fr) 2005-11-25 2006-10-27 Procede et dispositif de commande de moyens de protection de personnes

Country Status (5)

Country Link
US (1) US20090055054A1 (fr)
EP (1) EP1957319A1 (fr)
JP (1) JP2009517261A (fr)
DE (1) DE102005056203A1 (fr)
WO (1) WO2007060079A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009000122A1 (de) * 2009-01-09 2010-07-15 Robert Bosch Gmbh Verfahren und Steuergerät zur Anpassung einer Auslöseinformation eines Rückhaltesystems
US9156558B2 (en) * 2011-04-05 2015-10-13 Amsafe, Inc. Inflatable personal restraint systems
JP5778236B2 (ja) * 2013-10-18 2015-09-16 本田技研工業株式会社 車両衝突判定装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5216607A (en) * 1989-05-30 1993-06-01 Trw Vehicle Safety Systems Inc. Method and apparatus for sensing a vehicle crash using energy and velocity as measures of crash violence
US5065322A (en) * 1990-04-04 1991-11-12 Trw Vehicle Safety Systems Inc. Method and apparatus for sensing a vehicle crash in real time using a frequency domain summation algorithm
US5435184A (en) * 1991-10-31 1995-07-25 Pineroli; Bruno Device for determining running variables in a motor vehicle
GB2369708B (en) * 1999-11-03 2002-08-07 Autoliv Dev "Improvements in or relating to a control system"
DE10025260B4 (de) * 2000-05-22 2004-11-25 Conti Temic Microelectronic Gmbh Verfahren zur Detektion von Überrollvorgängen bei Kraftfahrzeugen mit Sicherheitseinrichtungen
US7561951B2 (en) * 2005-05-06 2009-07-14 Ford Global Technologies Llc Occupant control system integrated with vehicle dynamics controls

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007060079A1 *

Also Published As

Publication number Publication date
US20090055054A1 (en) 2009-02-26
WO2007060079A1 (fr) 2007-05-31
DE102005056203A1 (de) 2007-06-06
JP2009517261A (ja) 2009-04-30

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