WO2004087468A1 - Steuergerät für ein rückhaltesystem - Google Patents
Steuergerät für ein rückhaltesystem Download PDFInfo
- Publication number
- WO2004087468A1 WO2004087468A1 PCT/DE2004/000444 DE2004000444W WO2004087468A1 WO 2004087468 A1 WO2004087468 A1 WO 2004087468A1 DE 2004000444 W DE2004000444 W DE 2004000444W WO 2004087468 A1 WO2004087468 A1 WO 2004087468A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ignition
- processor
- control device
- module
- bus
- 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
- B60R21/017—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including arrangements for providing electric power to safety arrangements or their actuating means, e.g. to pyrotechnic fuses or electro-mechanic valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
- F42B33/06—Dismantling fuzes, cartridges, projectiles, missiles, rockets or bombs
-
- 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
- B60R2021/0104—Communication circuits for data transmission
- B60R2021/01047—Architecture
- B60R2021/01054—Bus
- B60R2021/01075—Bus between the airbag control unit and pyrotechnic fuses or equivalent actuators
Definitions
- the invention relates to a control device for a restraint system according to the type of the independent claim.
- a so-called waste ignition function is required by law in control units for restraint systems. It is used to safely ignite or burn off all pyrotechnic ignition and gas generating elements of airbags and belt tensioners when the vehicle is scrapped. After that, the further scrapping process is possible without endangering the airbags and without endangering the environment.
- the used pyrotechnic elements not only have to be disposed of at great expense, but can also be recycled.
- control device with the features of the independent claim has the advantage that a software element via an already existing interface, preferably a diagnostic interface
- Control unit is fed into the control unit, the software element then configuring all ignition circuits and the triggering algorithm for the ignition of all ignition circuits, and for a safety module which checks the sensor values independently of a processor in the control unit and then optionally releases the ignition circuits as a function of the check, such sensor values emulated so that the safety module Ignition circuits all released.
- a triggering event is therefore simulated for all ignition circuits. This then enables all ignition elements to be ignited via this software element in a simple manner without additional plugs via the already existing hardware, so that the ignition of the disposal is thus ensured in the simplest way.
- the emulation of the sensor values is necessary because the safety path is via the
- the software element can also be designed such that it is only a command that leads to the activation of further software in the control unit, which configures the triggering algorithm and the ignition circuits for the ignition of all existing ignition elements and emulates the sensor values in order to ultimately Ignition elements to ignite all.
- the diagnostic interface is either a CAN bus or a K-Line.
- the K-Line (“communication line”) is a standardized hardware interface via which e.g. the factory or other diagnoses (workshop diagnosis) can be made.
- the processor, the security module and at least one are advantageously
- SPI Serial Peripherial Interface
- the SPI line itself has five individual lines. Since it is a synchronous transmission, there is a clock line, which is marked with CLK.
- the MOSI (Master Out Slave In) line is available for data transmission from the master, which is the processor here, to a slave, for example a sensor IC or an interface module.
- the MISO Master In
- the processor transmits these emulated sensor values via the MISO line, over which the processor normally receives data, in order to pretend the emulated sensor values to the security module.
- the MISO line is connected to an input-output port of the processor for the transmission of the emulated sensor values.
- a boot loader is advantageously provided in the processor, which loads the software element and then starts immediately.
- a reset switch can also be provided, which is provided for restarting the at least one sensor module and safety module.
- the ignition circuits can also be restarted with this.
- FIG. 1 shows a block diagram of the control device according to the invention and FIG. 2 shows a flow diagram.
- a disposal ignition concept is proposed via customer diagnostic interfaces such as CAN or K-Line that are already present in the airbag control unit without additional interfaces.
- the existing mechanical and electrical hardware is used.
- an independent safety path which is implemented by a safety module, is deceived by the emulation of those sensor values which indicate a triggering event for all ignition elements.
- the processor which can be a microcontroller, evaluates in particular via an SPI
- Bus available sensor channels such as acceleration values and yaw rate values and processes them according to the implemented algorithms. These are algorithms that are used to control the restraint devices that are ignited via the ignition elements, provided that the restraint devices, such as airbags or belt tensioners, that can be triggered pyrotechnically.
- the microcontroller may access a second one SPI bus on power amplifier ICs, i.e. the ignition circuits.
- the power amplifier ICs monitor the ignition element and, in the event of a trigger, ensure that the trigger energy is supplied to the connected ignition elements.
- This safety module is connected to the same SPI bus as the sensors and the microcontroller.
- the safety module can only be configured once each time the control unit is switched on. After that, it can no longer be accessed in writing.
- the safety module monitors those transferred to the SPI bus
- this safety module issues a plausibility signal for triggering certain ignition circuits, regardless of the microcontroller.
- the safety module therefore consists of circuits that are much simpler in their complexity than that of a microcontroller.
- a special disposal ignition software which is described here with a software element, is loaded directly into a RAM memory and stacked there in the microcontroller via a diagnostic interface. So-called boot loader software is used for this.
- the task of the disposal ignition software is to operate the control unit with all signals, so that the control unit can be operated without interruption. This includes operating the watch dogs and enabling bus communication. It is also the task to manipulate the airbag algorithm in the microcontroller, that is to say to configure it so that the microcontroller releases and ignites the triggering of all ignition circuits. Another task is to get the safety module to provide the plausibility for the power amplifier ICs.
- Another component of such a concept can optionally be a simple circuit for resetting the sensor and output stage ICs and the safety module, controlled by the microcontroller.
- the boot loader software controls the reset switch. With this circuit, the disposal ignition concept can be handled more flexibly, since it can be reconfigured after such a reset. This can be done regardless of the initialization phase of the control unit, at the end of which all ICs are locked and write access is impossible afterwards.
- the software element will now emulate a virtual sensor, which feeds emulated sensor data to the SPI bus via the SPI bus, on which the physical sensors and the safety module are included. These emulated sensor data are evaluated by the safety module and cause the safety module to release the power amplifier ICs.
- FIG. 1 shows the control device 100 according to the invention in a block diagram.
- a processor 101 here designed as a microcontroller, receives the software element with which the disposal ignition is carried out via a transceiver, that is to say an interface module 102 via a diagnostic interface 103.
- the diagnostic interface here designed as a microcontroller, receives the software element with which the disposal ignition is carried out via a transceiver, that is to say an interface module 102 via a diagnostic interface 103.
- 103 here is a CAN bus or a K-Line or other diagnostic interfaces that are suitable for this.
- the software element is loaded and started from a RAM as memory using a boot loader software 115, so that the software element
- Algorithm for controlling output stages configured in processor 101 and also performs the output stages themselves and the sensor emulation.
- the configuration is such that all ignition elements are controlled.
- the algorithm therefore wants to ignite all ignition elements. It is possible to start the software element with other programs.
- the processor 101 is connected via a first SPI bus 104 to a security module 105 and two sensor modules 111 and 112 and an interface module 113 to which external sensors are connected.
- the microcontroller 101 is connected via a second SPI bus 109 to a memory 119 which is designed as an EEPROM, a first output stage IC 108 and a second output stage IC 107.
- a memory 119 which is designed as an EEPROM, a first output stage IC 108 and a second output stage IC 107.
- the processor 101 is optionally connected to a circuit breaker 110 with which the energy reserve voltage is switched through to the output stages 107 and 108. Furthermore, it is possible that the processor 101 can carry out a so-called ASIC reset 117, in which the output stages 107, 108 and the sensor modules 111 and 112 are made to restart.
- the SPI bus 104 is connected via its MISO line on the processor 101 to an input-output port in order to use this actual input line through the processor 101 to emulate the emulated sensor values of the virtual sensor 116, which is formed by the software element. transferred to. The input line is therefore used as the output line.
- the security module 105 is then deceived by means of the emulated sensor values such that it releases the output stages 107 and 108 via the line 106.
- the microcontroller 101 will then trigger the ignition elements via the output stages 107 and 108, since the triggering algorithm on the microcontroller 101 has been configured by the software element such that the triggering can now take place.
- the safety module 105 also checks and emulates the sensor values of the sensors connected externally via the interface module 113.
- the RAM is assigned to the processor 101.
- FIG. 2 illustrates what happens in control unit 100.
- the software element is loaded into the processor 101 via the interface 103 and the transceiver 102 and then stacked by the boot loader software 115. This then takes place in method step 201.
- the designed software element will then configure the algorithm in processor 101 and output stages 107 and 108 in such a way that all ignition elements can be ignited. However, this is only possible if the safety module 105 also releases the output stages 107 and 108.
- the software element uses a virtual sensor 116 to simulate sensor values that justify triggering all the ignition elements. Then the safety module 105 then releases the output stages 107 and 108 via the line 106. The ignition elements can then be ignited via the output stages 107 and 108 in method step 204.
- the circuit 117 which is assigned to the processor 101, the output stage ICs 107 and
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Safety Devices In Control Systems (AREA)
- Air Bags (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04718184A EP1613510B1 (de) | 2003-04-01 | 2004-03-06 | Steuergerät für ein rückhaltesystem |
US10/539,920 US7263421B2 (en) | 2003-04-01 | 2004-03-06 | Control unit for a restraint system |
DE502004004811T DE502004004811D1 (de) | 2003-04-01 | 2004-03-06 | Steuergerät für ein rückhaltesystem |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10314676.8 | 2003-04-01 | ||
DE10314676 | 2003-04-01 | ||
DE10346623A DE10346623A1 (de) | 2003-04-01 | 2003-10-08 | Steuergerät für ein Rückhaltesystem |
DE10346623.1 | 2003-10-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004087468A1 true WO2004087468A1 (de) | 2004-10-14 |
Family
ID=33132667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/000444 WO2004087468A1 (de) | 2003-04-01 | 2004-03-06 | Steuergerät für ein rückhaltesystem |
Country Status (5)
Country | Link |
---|---|
US (1) | US7263421B2 (de) |
EP (1) | EP1613510B1 (de) |
DE (1) | DE502004004811D1 (de) |
ES (1) | ES2290681T3 (de) |
WO (1) | WO2004087468A1 (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1796051A1 (de) * | 2005-12-06 | 2007-06-13 | Volkswagen AG | Diagnosevorrichtungen in einem Fahrzeug mit Diagnoseframework für Diagnosemodule |
WO2009030544A1 (de) | 2007-09-03 | 2009-03-12 | Robert Bosch Gmbh | Steuergerät und verfahren zur ansteuerung von personenschutzmitteln |
WO2011062044A1 (ja) * | 2009-11-20 | 2011-05-26 | オートリブ ディベロップメント エービー | プログラム実行不能化方法、プログラム格納方法及びエアバッグ制御装置 |
DE102019101739A1 (de) * | 2019-01-24 | 2020-07-30 | Elmos Semiconductor Aktiengesellschaft | Vorrichtung mit Überprüfungsfähigkeit einer Airbag Zündstufe im Betrieb |
DE102019101733A1 (de) * | 2019-01-24 | 2020-07-30 | Elmos Semiconductor Aktiengesellschaft | Vorrichtung zur Absicherung der Überwachung einer Airbag Zündstufe im Betrieb |
US11643038B2 (en) | 2019-01-24 | 2023-05-09 | Elmos Semiconductor Se | Device for initiating a protective function in a vehicle |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004056415A1 (de) * | 2004-11-23 | 2006-05-24 | Robert Bosch Gmbh | Integrierter Schaltkreis |
DE102004056416A1 (de) * | 2004-11-23 | 2006-05-24 | Robert Bosch Gmbh | Beschleunigungssensor in einem Steuergerät |
US7930082B2 (en) * | 2008-05-20 | 2011-04-19 | Autoliv Asp, Inc. | Fail-safe apparatus and method for disposal of automobile pyrotechnic safety devices |
DE102018107452B4 (de) | 2017-06-01 | 2019-04-11 | Elmos Semiconductor Aktiengesellschaft | ISO 26262 konformes Verfahren zur Prüfung einer Bewertungsvorrichtung für Sensordaten innerhalb eines sicherheitsrelevanten Gesamtsystems |
DE102018107449B4 (de) | 2017-06-01 | 2019-04-11 | Elmos Semiconductor Aktiengesellschaft | ISO 26262 konformes Verfahren zur Prüfung einer Bewertungsvorrichtung für Sensordaten innerhalb eines sicherheitsrelevanten Gesamtsystems |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0995646A2 (de) * | 1998-10-24 | 2000-04-26 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Entschärfen von pyrotechnischen Aktuatoren in einem Fahrzeug |
EP1239370A2 (de) * | 2001-03-09 | 2002-09-11 | Robert Bosch Gmbh | Verfahren zur Überprüfung eines Schnittstellenbausteins |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6290255B1 (en) * | 1997-03-07 | 2001-09-18 | Automotive Systems Laboratory, Inc. | Occupant detection system |
US6598900B2 (en) * | 1999-04-19 | 2003-07-29 | Automotive Systems Laboratory, Inc. | Occupant detection system |
US6898498B1 (en) * | 1999-07-06 | 2005-05-24 | Delphi Technologies, Inc. | Crash classification method and apparatus using multiple point crash sensing |
DE10054681A1 (de) | 2000-11-03 | 2002-05-08 | Volkswagen Ag | Einrichtung zum Auslösen von Airbags |
DE10064651A1 (de) * | 2000-12-22 | 2002-07-04 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung einer Gasfüllung von Zylindern einer Brennkraftmaschine |
-
2004
- 2004-03-06 WO PCT/DE2004/000444 patent/WO2004087468A1/de active IP Right Grant
- 2004-03-06 EP EP04718184A patent/EP1613510B1/de not_active Expired - Lifetime
- 2004-03-06 ES ES04718184T patent/ES2290681T3/es not_active Expired - Lifetime
- 2004-03-06 DE DE502004004811T patent/DE502004004811D1/de not_active Expired - Lifetime
- 2004-03-06 US US10/539,920 patent/US7263421B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0995646A2 (de) * | 1998-10-24 | 2000-04-26 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Entschärfen von pyrotechnischen Aktuatoren in einem Fahrzeug |
EP1239370A2 (de) * | 2001-03-09 | 2002-09-11 | Robert Bosch Gmbh | Verfahren zur Überprüfung eines Schnittstellenbausteins |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1796051A1 (de) * | 2005-12-06 | 2007-06-13 | Volkswagen AG | Diagnosevorrichtungen in einem Fahrzeug mit Diagnoseframework für Diagnosemodule |
WO2009030544A1 (de) | 2007-09-03 | 2009-03-12 | Robert Bosch Gmbh | Steuergerät und verfahren zur ansteuerung von personenschutzmitteln |
RU2494890C2 (ru) * | 2007-09-03 | 2013-10-10 | Роберт Бош Гмбх | Устройство управления и способ приведения в действие средств безопасности |
US9174596B2 (en) | 2007-09-03 | 2015-11-03 | Robert Bosch Gmbh | Control unit and method for activating occupant protection means |
WO2011062044A1 (ja) * | 2009-11-20 | 2011-05-26 | オートリブ ディベロップメント エービー | プログラム実行不能化方法、プログラム格納方法及びエアバッグ制御装置 |
DE102019101739A1 (de) * | 2019-01-24 | 2020-07-30 | Elmos Semiconductor Aktiengesellschaft | Vorrichtung mit Überprüfungsfähigkeit einer Airbag Zündstufe im Betrieb |
DE102019101733A1 (de) * | 2019-01-24 | 2020-07-30 | Elmos Semiconductor Aktiengesellschaft | Vorrichtung zur Absicherung der Überwachung einer Airbag Zündstufe im Betrieb |
DE102019101739B4 (de) * | 2019-01-24 | 2021-02-11 | Elmos Semiconductor Se | Vorrichtung mit Überprüfungsfähigkeit einer Airbag Zündstufe im Betrieb |
DE102019101733B4 (de) * | 2019-01-24 | 2021-02-11 | Elmos Semiconductor Se | Vorrichtung zur Absicherung der Überwachung einer Airbag Zündstufe im Betrieb |
US11643038B2 (en) | 2019-01-24 | 2023-05-09 | Elmos Semiconductor Se | Device for initiating a protective function in a vehicle |
Also Published As
Publication number | Publication date |
---|---|
EP1613510B1 (de) | 2007-08-29 |
DE502004004811D1 (de) | 2007-10-11 |
US7263421B2 (en) | 2007-08-28 |
ES2290681T3 (es) | 2008-02-16 |
EP1613510A1 (de) | 2006-01-11 |
US20060113840A1 (en) | 2006-06-01 |
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