EP1392550A1 - Dispositif de captation d'impacts lateraux - Google Patents

Dispositif de captation d'impacts lateraux

Info

Publication number
EP1392550A1
EP1392550A1 EP02732423A EP02732423A EP1392550A1 EP 1392550 A1 EP1392550 A1 EP 1392550A1 EP 02732423 A EP02732423 A EP 02732423A EP 02732423 A EP02732423 A EP 02732423A EP 1392550 A1 EP1392550 A1 EP 1392550A1
Authority
EP
European Patent Office
Prior art keywords
sensor
arrangement
side impact
acceleration
control unit
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Withdrawn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
EP02732423A
Other languages
German (de)
English (en)
Inventor
Pascal Kocher
Michael Arndt
Rolf-Juergen Recknagel
Rolf Aidam
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 EP1392550A1 publication Critical patent/EP1392550A1/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Withdrawn legal-status Critical Current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
    • 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
    • B60R2021/0006—Lateral collision
    • 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

Definitions

  • the invention is based on an arrangement for side impact sensing according to the type of the independent claim.
  • the arrangement according to the invention for side impact sensing with the features of the independent claim has the advantage that the temperature sensor and the acceleration sensor are combined in one structural unit. This reduces interfaces, sensor housings, cable harnesses and assembly costs.
  • a device is here understood to mean, for example, be closed by a housing, wherein the components are not connected to each other by long cables •.
  • the arrangement has a processor for evaluating at least one of the sensor signals, so that the sensor used as a plausibility sensor, that is to say either the acceleration sensor or the temperature sensor, is already checked in the arrangement according to the invention as to whether the
  • Plausibility condition i.e. a threshold value
  • the result of this evaluation is then transmitted to the control unit, which then compares the result of the side impact sensor with the plausibility sensor.
  • an interface module of the arrangement according to the invention forms a multiplex of the sensor values. This can be a frequency or time division multiplex. However, even if the arrangement according to the invention itself evaluates the sensor values of the plausibility sensor, the interface module forms a multiplex from the result of this evaluation and the sensor values of the side impact sensor.
  • the arrangement according to the invention has a common housing for the Has temperature sensor and the acceleration sensor. Both sensors are preferably produced by means of micromechanics and can even be arranged on the same substrate.
  • FIG. 1 shows a first block diagram of two arrangements according to the invention which are connected to a control unit and
  • FIG. 2 shows a second block diagram of the arrangement according to the invention.
  • Side impact sensors are increasingly being used in motor vehicles to sense a side impact and then to use appropriate restraint devices. These sensors for side-impact sensing are used in particular, offset from the central control unit, which is placed on the tunnel of the vehicle, in side parts or on side parts of the motor vehicle. This includes a cavity in the side section, a seat cross member, a sill, the B-pillar or the door. The sensor signals are then transmitted to the control unit by means of a digital interface in order to be processed there directly.
  • a temperature sensor for side impact sensing is now combined with an acceleration sensor for side impact sensing in an arrangement that represents a structural unit. This saves cable effort, housing effort and effort on interface modules, because now these two sensors can share cables, an interface module and housing.
  • the sensors are usually manufactured using micromechanics, and it is also possible to produce different sensor types, such as the temperature sensor and the acceleration sensor, on a common substrate.
  • Remote sensors are connected to the central control unit on the tunnel via a two-wire line. Furthermore, a so-called powerline transmission is carried out here, i.e. The control unit supplies the remote sensors with electrical energy via this two-wire line, while the sensors modulate this electrical energy for data transmission and these modulation signals are then received by the control unit.
  • FIG. 1 shows a configuration as it can be provided in a motor vehicle for a left and right side airbag.
  • a central control device 1 without a plausibility sensor is arranged on a vehicle tunnel.
  • the control unit 1 is connected to a sensor arrangement 2 via a first data input and to a sensor arrangement 3 via a second data input.
  • the sensor arrangement 2 is installed in a side part on the left side of the vehicle, while the sensor arrangement 3 is arranged on the right side of the vehicle.
  • the arrangements 2 and 3 are each in a side part which is designed as a cavity. Both sensor arrangements 2 and 3 have both a temperature and one Accelerometer on. If there is a side impact, the side part is pressed in and the air in the hollow body in which the sensor arrangements 2 and 3 are located is compressed. This leads to an adiabatic pressure rise and an accompanying adiabatic temperature rise. At the same time, the side impact leads to acceleration in the transverse direction.
  • Both the temperature rise as well as the acceleration in the transverse direction of the acceleration sensor are 'detected by the temperature sensor or by ,,.
  • These respective sensor values are either transmitted directly to the control unit 1, or the sensor values of the plausibility sensor, i.e. either the temperature sensor or the acceleration sensor, are already evaluated in relation to a threshold value in the arrangement 2 or 3 according to the invention by means of a processor or a dedicated hardware module. Only this result is then transmitted to the central device 1.
  • the central device 1 then calculates with the sensor, which is not considered
  • Plausibility sensor uses the triggering algorithm and checks whether the plausibility sensor also indicates a side impact, if this is the result of the triggering algorithm.
  • the restraint means which are not shown here, are actuated by the central device 1 in order to trigger them and to protect the vehicle occupants accordingly.
  • FIG. 2 shows a block diagram of the arrangement according to the invention.
  • the arrangement 4 according to the invention is designed as a structural unit with a housing.
  • An acceleration sensor 5 with a measuring amplifier is connected to an analog / digital converter 7, which digitizes the acceleration values and transmits them to an interface module 9.
  • a temperature sensor 6 with a connected measuring amplifier is connected to an analog / digital converter 8, which also digitizes the temperature signals and also transmits them to the interface module 9. If the sensor values are transmitted directly to control unit 1, then interface module 9 forms a multiplex from the digitized acceleration and temperature signals, that is to say either a time or frequency multiplex.
  • the interface module 9 has a processor unit which compares the temperature signals of the temperature sensor 5 with a predetermined threshold value, which is stored in the interface module 9. If the temperature signals are above this threshold value, then the plausibility sensor 5 indicates that a side impact has been detected. This result is then transmitted from the interface module 9 to the central device 1.
  • the acceleration sensor 6 is used here as the side impact sensor and the
  • Acceleration sensor values are transmitted directly to the central device 1. But here too, the interface module 9 forms a multiplex from the result of the plausibility check of the temperature signals and the acceleration values.
  • the acceleration sensor 6 can also be used as a plausibility sensor. Then the acceleration values are compared by the interface module 9 with a predetermined threshold value and only if this threshold value is exceeded is a side impact detected. In this case, the temperature signals from the temperature sensor 5 are transmitted to the control unit 1 for calculating the triggering algorithm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

L'invention concerne un dispositif destiné à la captation d'impacts latéraux, lequel se caractérise en ce que dans une unité structurale, sont disposés tant un capteur de température qu'un capteur d'accélération. Chacun de ces capteurs peut être respectivement utilisé pour le contrôle de plausibilité.
EP02732423A 2001-05-16 2002-05-14 Dispositif de captation d'impacts lateraux Withdrawn EP1392550A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10123840 2001-05-16
DE10123840A DE10123840B4 (de) 2001-05-16 2001-05-16 Anordnung zur Seitenaufprallsensierung
PCT/DE2002/001724 WO2002092395A1 (fr) 2001-05-16 2002-05-14 Dispositif de captation d'impacts lateraux

Publications (1)

Publication Number Publication Date
EP1392550A1 true EP1392550A1 (fr) 2004-03-03

Family

ID=7685010

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02732423A Withdrawn EP1392550A1 (fr) 2001-05-16 2002-05-14 Dispositif de captation d'impacts lateraux

Country Status (5)

Country Link
US (1) US20040032322A1 (fr)
EP (1) EP1392550A1 (fr)
JP (1) JP2004519383A (fr)
DE (1) DE10123840B4 (fr)
WO (1) WO2002092395A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2396942A (en) * 2002-12-31 2004-07-07 Autoliv Dev Impact detector with varying stiffness
DE10361095A1 (de) * 2003-12-22 2005-07-21 Conti Temic Microelectronic Gmbh Sensoranordnung für ein Kraftfahrzeug zum Erkennen eines Aufpralls, sowie ein dazugehörendes Auswerteverfahren für ein Insassenschutzsystem in einem Fahrzeug
DE102005016009A1 (de) * 2005-04-07 2006-10-12 Robert Bosch Gmbh Verfahren und Vorrichtung zur Stabilisierung eines Fahrzeugs nach einer Kollision
US9459015B2 (en) * 2005-05-06 2016-10-04 John Chris Karamanos HVAC system and zone control unit
DE102005026987A1 (de) * 2005-06-10 2006-12-21 Robert Bosch Gmbh Vorrichtung zur Aufprallerkennung
DE102005036623B4 (de) 2005-08-04 2018-08-02 Volkswagen Ag Crash-Sensorvorrichtung und Verfahren zum Erfassen eines Crash-Ereignisses
US7536247B2 (en) * 2005-11-30 2009-05-19 Ford Global Technologies Method and apparatus for reconstructing an accident using side satellite lateral acceleration sensors
DE102007018468A1 (de) 2007-04-19 2008-10-23 Robert Bosch Gmbh Vorrichtung und Verfahren zur Ansteuerung von Personenschutzmitteln
JP5251905B2 (ja) * 2010-03-09 2013-07-31 三菱自動車工業株式会社 車両用側面衝突判定装置および高電圧電源遮断装置
DE102012210106A1 (de) * 2012-06-15 2013-12-19 Robert Bosch Gmbh Sensoranordnung für eine Elektrik/Elektronik-Architektur und zugehörige Elektrik/Elektronik-Architektur für ein Fahrzeug

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4220270B4 (de) * 1992-06-20 2005-12-22 Robert Bosch Gmbh Schutzeinrichtung für Fahrzeuginsassen
US5748075A (en) * 1992-11-11 1998-05-05 Siemens Aktiengesellschaft Control unit with an air pressure detector for a vehicle passenger protection system
US5808197A (en) * 1995-01-13 1998-09-15 Remec, Inc. Vehicle information and control system
DE19858760A1 (de) * 1998-12-18 2000-06-29 Siemens Ag Vorrichtung zum Steuern eines Insassenschutzmittels eines Fahrzeugs
DE10057258C1 (de) * 2000-11-18 2002-03-07 Bosch Gmbh Robert Vorrichtung und Verfahren zur Seitenaufprallerkennung
DE10140119C1 (de) * 2001-08-16 2003-03-20 Bosch Gmbh Robert Vorrichtung zur Aufprallerkennung in einem Fahrzeug
DE10144266C1 (de) * 2001-09-08 2003-04-03 Bosch Gmbh Robert Vorrichtung zur Seitenaufprallerkennung in einem Fahrzeug

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02092395A1 *

Also Published As

Publication number Publication date
WO2002092395A1 (fr) 2002-11-21
DE10123840B4 (de) 2008-02-07
DE10123840A1 (de) 2002-11-28
JP2004519383A (ja) 2004-07-02
US20040032322A1 (en) 2004-02-19

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