US20080169629A1 - Integrated Circuit - Google Patents

Integrated Circuit Download PDF

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Publication number
US20080169629A1
US20080169629A1 US11/666,842 US66684205A US2008169629A1 US 20080169629 A1 US20080169629 A1 US 20080169629A1 US 66684205 A US66684205 A US 66684205A US 2008169629 A1 US2008169629 A1 US 2008169629A1
Authority
US
United States
Prior art keywords
integrated circuit
recited
control unit
block
watchdog
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.)
Abandoned
Application number
US11/666,842
Other languages
English (en)
Inventor
Hartmut Schumacher
Bernd Roos
Rudiger Karner
Alain Jousse
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
Individual
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 Individual filed Critical Individual
Assigned to ROBERT BOSCH GMBH reassignment ROBERT BOSCH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JOUSSE, ALAIN, KARNER, RUDIGER, ROOS, BERND, SCHUMACHER, HARTMUT
Publication of US20080169629A1 publication Critical patent/US20080169629A1/en
Priority to US15/368,071 priority Critical patent/US10486630B2/en
Abandoned legal-status Critical Current

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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
    • 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
    • B60R21/017—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
    • 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
    • B60R2021/01286—Electronic control units

Definitions

  • a control unit for activating passenger protection means in which a processor is provided in and a security IC is provided parallel thereto, which monitors sensor values independently of the processor, is described in published German patent document DE 100 57 915.
  • An ignition circuit component having ignition output stages for activating the ignition element is also provided.
  • the integrated circuit additionally has a further interface for communication with sensors or other control units.
  • This interface may, for example, be implemented as a CAN bus interface or as a K line.
  • the watchdog is implemented in three stages.
  • the three-stage watchdog performs system clock monitoring, monitors the correct sequence of system-relevant software-based functions, and monitors built-in self-tests of system components, such as memory components or other internal processor components.
  • the power supply unit additionally has the function of charging an energy reserve of the control unit which is required for the autonomous time.
  • the power supply unit also has a DC voltage converter for an increased voltage for the energy reserve, a step-down converter for a 6.7 V power supply unit, and components for the 5 V and 3.3 V power supply unit.
  • Linear voltage regulators may be used here.
  • the integrated circuit according to the present invention also contains the ignition output stages. Therefore, multiple elements may be provided using a single integrated circuit.
  • FIG. 1 shows a block diagram of a control unit having the integrated circuit according to the present invention.
  • the power supply unit a security function, and interfaces.
  • the ignition output stages may also be integrated into the integrated circuit.
  • the security function includes a watchdog for the processor located in the control unit, preferably a microcontroller, and an evaluation of the acceleration signals independently of the microcontroller. This refers to the security semiconductor known from the related art.
  • the functions also include interfaces to the external sensors and also other communication interfaces, such as the K line or CAN. The unidirectional connections to the sensors are possible, such as a bus interface and the LIN interface.
  • FIG. 1 shows a block diagram of the integrated circuit according to the present invention, which is situated in a control unit.
  • the dashed boundary line indicates the control unit.
  • Integrated circuit 100 to which the cathode of a diode 102 is connected, is located inside the control unit. This connection of the cathode of diode 102 leads to a block 118 in circuit 100 , which is responsible for the power supply.
  • This block 118 performs the following functions: it has a step-output or step-down converter for the energy reserve, it has a voltage converter to achieve 3.3 V from the existing 5 V, and it has a voltage regulator for this 3.3 V.
  • block 118 has a reset function to restart the control unit in case of an error, for example.
  • Block 118 is additionally connected to a regulator 101 , to which energy reserve 122 is connected as a capacitor in relation to ground.
  • Regulator 101 ensures charging of energy reserve 122 and, in case of triggering, supplying the energy stored in the energy reserve 122 to a block 119 , which represents the ignition output stages.
  • the ignition current is typically always obtained from energy reserve 122 .
  • block 119 is also supplied internally with energy from block 118 to operate the logic provided in block 119 , for example.
  • An SPI (serial peripheral interface) bus 121 which allows data communication, is provided internally between blocks 119 and 118 , 123 and 120 .
  • An SPI bus 105 is also connected to this SPI bus 121 , outside the component 100 .
  • a memory 104 which is implemented here as an EEPROM, but also microcontroller 112 and sensors 107 through 110 , are connected to this bus 105 .
  • block 120 performs the security functions, which include the parallel analysis of the sensor signals from sensors 107 through 110 , this analysis occurring in parallel to that of microcontroller 112 , and the watchdog function, which monitors the function of microcontroller 112 . These functions are all executed via SPI buses 121 and 105 .
  • Block 123 represents the interface functions of integrated circuit 100 .
  • Block 123 is therefore connected via inputs/outputs 117 to the outside world of the control unit.
  • block 123 is connected via a K line or LIN interface via input/output 116 to the outside world, for example, to weight sensors on a vehicle seat.
  • Block 123 is connected via inputs/outputs 115 to externally connected acceleration sensors, which are located in the vehicle side and/or the vehicle front as front sensors, for example. Sensor signals of these external sensors are analyzed by the safety controller of block 120 in parallel to microcontroller 112 in order to establish whether it is actually a case for triggering.
  • Microcontroller ⁇ C determines, on the basis of the sensor data of sensors 107 through 110 and the external sensors, which provide their data via inputs 115 and 114 to block 100 , whether the triggering of restraining means is necessary. Since microcontrollers such as microcontroller 112 may have malfunctions under certain circumstances and incorrect triggering may occur, it is necessary to provide redundant analysis, which is implemented by block 120 . This analysis by block 120 is less detailed than that which processor 112 performs itself. Data which is required for a post-crash analysis is stored in memory 104 , which is implemented as an EEPROM. This data includes, for example, error and operational characteristic values, such as the measured accelerations which have resulted in triggering, triggering times, times of day, etc. As shown in FIG.
  • block 107 is implemented as a roll rate sensor, while sensor 108 senses accelerations in the Y and Z directions.
  • Y means a lateral direction of the vehicle and Z means a vertical direction of the vehicle.
  • the X direction is detected by sensor 109 , for example, which detects accelerations in the vehicle longitudinal direction.
  • An X-Y sensor 110 which detects accelerations in the vehicle longitudinal direction and vehicle transverse direction, respectively, is also provided. Angled arrangements of the acceleration sensors are possible, of course.
  • Processor 112 is connected via an interface component 113 via the K line to other control units, for example. K line is an established concept and stands for communication line.
  • Processor 112 is connected to two drivers 111 via an output.
  • Drivers 111 are configured as low side switches, for example, for turning on and off a lamp and producing a digital signal, as a pull-up in the receiver of the signal.
  • An example operation of the control unit having component 100 according to the present invention is as follows.
  • Energy reserve capacitor 122 is charged by using component 100 via diode 102 and block 118 .
  • block 118 provides the operating voltages for the control unit. These operating voltages include 5 V and also 3.3 V, which are provided in regulated form.
  • the control unit receives sensor values from sensors 107 through 110 and the external sensors via inputs 114 and 115 in order to determine whether a crash condition exists.
  • the sensor values are analyzed by processor 112 .
  • the acceleration signals are typically smoothed or integrated and compared to variable or fixed thresholds.
  • block 120 also uses a safety controller to monitor these sensor values via fixed thresholds, for example, to determine whether a case for triggering may actually occur.
  • output stages 119 are enabled by block 120 and the fire command is transmitted from processor 112 via SPI line 105 and 121 to output stages 119 , so that these are then enabled.
  • This causes the energy which is stored in energy reserve 122 to be supplied via block 101 to the output stages, which supply the energy to ignition elements 106 , so that the ignition elements are fired, and in turn the restraining means are triggered.
  • control unit In addition to the components shown here, further components may be situated in the control unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Electronic Switches (AREA)
US11/666,842 2004-11-23 2005-09-09 Integrated Circuit Abandoned US20080169629A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/368,071 US10486630B2 (en) 2004-11-23 2016-12-02 Integrated circuit in a control unit, and a control unit for activating a passenger protection arrangement

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004056415.9 2004-11-23
DE102004056415A DE102004056415A1 (de) 2004-11-23 2004-11-23 Integrierter Schaltkreis
PCT/EP2005/054483 WO2006056496A1 (fr) 2004-11-23 2005-09-09 Circuit integre

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/054483 A-371-Of-International WO2006056496A1 (fr) 2004-11-23 2005-09-09 Circuit integre

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/368,071 Continuation US10486630B2 (en) 2004-11-23 2016-12-02 Integrated circuit in a control unit, and a control unit for activating a passenger protection arrangement

Publications (1)

Publication Number Publication Date
US20080169629A1 true US20080169629A1 (en) 2008-07-17

Family

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Family Applications (2)

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US11/666,842 Abandoned US20080169629A1 (en) 2004-11-23 2005-09-09 Integrated Circuit
US15/368,071 Active 2026-09-02 US10486630B2 (en) 2004-11-23 2016-12-02 Integrated circuit in a control unit, and a control unit for activating a passenger protection arrangement

Family Applications After (1)

Application Number Title Priority Date Filing Date
US15/368,071 Active 2026-09-02 US10486630B2 (en) 2004-11-23 2016-12-02 Integrated circuit in a control unit, and a control unit for activating a passenger protection arrangement

Country Status (5)

Country Link
US (2) US20080169629A1 (fr)
EP (1) EP1817208B1 (fr)
JP (1) JP4630342B2 (fr)
DE (1) DE102004056415A1 (fr)
WO (1) WO2006056496A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120187962A1 (en) * 2007-08-06 2012-07-26 Frank Ewerhart Control device and method for triggering person protecting device

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007008387A1 (de) 2007-02-21 2008-08-28 Robert Bosch Gmbh Baustein mit nur einem Chipgehäuse
DE102008000810B4 (de) 2008-03-26 2018-06-21 Robert Bosch Gmbh Steuergerät und Verfahren zur Ansteuerung von Personenschutzmitteln für ein Fahrzeug
DE102008040315A1 (de) 2008-07-10 2010-01-14 Robert Bosch Gmbh Rückhaltemittelsteuerung für ein Steuergerät
DE102008040317B4 (de) 2008-07-10 2019-06-13 Robert Bosch Gmbh Steuergerät und Verfahren zur Ansteuerung von Personenschutzmitteln für ein Fahrzeug
DE102008041339B4 (de) 2008-08-19 2020-06-04 Robert Bosch Gmbh Steuergerät und Verfahren zur Ansteuerung von Personenschutzmitteln für ein Fahrzeug
DE102008041680B4 (de) 2008-08-29 2019-06-06 Robert Bosch Gmbh Schaltkreis für ein Insassenschutzsystem
DE102009001877A1 (de) 2009-03-26 2010-09-30 Robert Bosch Gmbh Verfahren und Vorrichtung zum Bereitstellen einer Diagnoseinformation für ein Steuergerät eines Fahrzeugs
DE102009027002A1 (de) 2009-06-17 2010-12-23 Robert Bosch Gmbh Energieversorgungsvorrichtung und Verfahren zur Versorgung von Fahrzeugkomponenten mit Energie
DE102011080511A1 (de) 2011-08-05 2013-02-07 Robert Bosch Gmbh Schaltungsanordnung und Verfahren zur Plausibilisierung von Sensorsignalen
KR102403391B1 (ko) * 2017-10-24 2022-05-30 현대모비스 주식회사 차량용 에어백 구동장치 및 그 제어방법

Citations (12)

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Publication number Priority date Publication date Assignee Title
US5503059A (en) * 1995-01-03 1996-04-02 Pacholok; David R. Vehicle disabling device and method
US5691629A (en) * 1995-07-13 1997-11-25 The United States Of America As Represented By The Secretary Of The Air Force Non-volatile power supply having energy efficient DC/DC voltage converters with a small storage capacitor
US5717318A (en) * 1996-07-08 1998-02-10 Fujitsu Limited Step-down type DC-DC regulator
US5904666A (en) * 1997-08-18 1999-05-18 L.Vad Technology, Inc. Method and apparatus for measuring flow rate and controlling delivered volume of fluid through a valve aperture
US6191949B1 (en) * 1997-07-22 2001-02-20 Autoliv Asp, Inc. Application specific integrated circuit package and initiator employing same
US6249228B1 (en) * 1998-10-23 2001-06-19 Trw Inc. Vehicle occupant protection device and system having an anti-theft, anti-tamper feature
US6530597B1 (en) * 1997-09-11 2003-03-11 Siemens Aktiengesellschaft Device for protecting vehicle occupants in a motor vehicle
US20030155753A1 (en) * 1991-07-09 2003-08-21 Breed David S. Crash sensor arrangement for controlling deployment of an occupant restraint device
US20040094349A1 (en) * 2000-11-21 2004-05-20 Hartmut Schumacher Control device for a restraining system in a motor vehicle
US20040153886A1 (en) * 2000-11-14 2004-08-05 Hartmut Schumacher Device for monitoring a processor
US6803673B2 (en) * 2000-11-21 2004-10-12 Robert Bosch Gmbh Device for controlling firing circuits for restraining devices
US7185449B2 (en) * 2004-03-16 2007-03-06 Kime James A System for controlling the hydraulic actuated components of a truck

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US5648759A (en) * 1994-02-02 1997-07-15 National Semiconductor Corporation Failsafe voltage regulator with warning signal driver
JPH07291086A (ja) * 1994-04-26 1995-11-07 Sensor Technol Kk 一括搭載電子式エアバッグ装置
JP3679876B2 (ja) * 1996-11-01 2005-08-03 富士通テン株式会社 エアバッグ装置
JP3405173B2 (ja) * 1998-02-18 2003-05-12 トヨタ自動車株式会社 車両用乗員保護装置の点火制御方法
DE19825817C1 (de) * 1998-06-09 1999-09-30 Siemens Ag Kraftfahrzeugsteuersystem
JP3627609B2 (ja) * 2000-01-25 2005-03-09 株式会社デンソー 車両用乗員保護システムのための起動装置
JP3996410B2 (ja) * 2002-03-01 2007-10-24 ダイセル化学工業株式会社 エアバッグシステム用点火器
JP4103642B2 (ja) * 2003-03-19 2008-06-18 株式会社デンソー エアバッグシステム
WO2004087468A1 (fr) * 2003-04-01 2004-10-14 Robert Bosch Gmbh Unite de controle pour systeme de retenue
JP2005017091A (ja) * 2003-06-25 2005-01-20 Toyota Motor Corp 車両デバイス用集積回路装置

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Publication number Priority date Publication date Assignee Title
US20030155753A1 (en) * 1991-07-09 2003-08-21 Breed David S. Crash sensor arrangement for controlling deployment of an occupant restraint device
US5503059A (en) * 1995-01-03 1996-04-02 Pacholok; David R. Vehicle disabling device and method
US5691629A (en) * 1995-07-13 1997-11-25 The United States Of America As Represented By The Secretary Of The Air Force Non-volatile power supply having energy efficient DC/DC voltage converters with a small storage capacitor
US5717318A (en) * 1996-07-08 1998-02-10 Fujitsu Limited Step-down type DC-DC regulator
US6191949B1 (en) * 1997-07-22 2001-02-20 Autoliv Asp, Inc. Application specific integrated circuit package and initiator employing same
US5904666A (en) * 1997-08-18 1999-05-18 L.Vad Technology, Inc. Method and apparatus for measuring flow rate and controlling delivered volume of fluid through a valve aperture
US6530597B1 (en) * 1997-09-11 2003-03-11 Siemens Aktiengesellschaft Device for protecting vehicle occupants in a motor vehicle
US6249228B1 (en) * 1998-10-23 2001-06-19 Trw Inc. Vehicle occupant protection device and system having an anti-theft, anti-tamper feature
US20040153886A1 (en) * 2000-11-14 2004-08-05 Hartmut Schumacher Device for monitoring a processor
US20040094349A1 (en) * 2000-11-21 2004-05-20 Hartmut Schumacher Control device for a restraining system in a motor vehicle
US6803673B2 (en) * 2000-11-21 2004-10-12 Robert Bosch Gmbh Device for controlling firing circuits for restraining devices
US7185449B2 (en) * 2004-03-16 2007-03-06 Kime James A System for controlling the hydraulic actuated components of a truck

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120187962A1 (en) * 2007-08-06 2012-07-26 Frank Ewerhart Control device and method for triggering person protecting device
US8648613B2 (en) * 2007-08-06 2014-02-11 Robert Bosch Gmbh Control device and method for triggering person protecting device

Also Published As

Publication number Publication date
EP1817208A1 (fr) 2007-08-15
US20170080888A1 (en) 2017-03-23
JP4630342B2 (ja) 2011-02-09
JP2008520492A (ja) 2008-06-19
DE102004056415A1 (de) 2006-05-24
US10486630B2 (en) 2019-11-26
EP1817208B1 (fr) 2017-03-01
WO2006056496A1 (fr) 2006-06-01

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AS Assignment

Owner name: ROBERT BOSCH GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SCHUMACHER, HARTMUT;ROOS, BERND;KARNER, RUDIGER;AND OTHERS;REEL/FRAME:020029/0868;SIGNING DATES FROM 20070618 TO 20070710

STCB Information on status: application discontinuation

Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION