CN1227122C - 无变压器的容错气囊总线系统 - Google Patents
无变压器的容错气囊总线系统 Download PDFInfo
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- CN1227122C CN1227122C CNB018009891A CN01800989A CN1227122C CN 1227122 C CN1227122 C CN 1227122C CN B018009891 A CNB018009891 A CN B018009891A CN 01800989 A CN01800989 A CN 01800989A CN 1227122 C CN1227122 C CN 1227122C
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- Prior art keywords
- bus
- gas
- energy reserve
- firing
- bag system
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- 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.)
- Expired - Lifetime
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- 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
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
-
- 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
- B60R21/0173—Diagnostic or recording means therefor
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Air Bags (AREA)
Abstract
容错气囊系统需要浮动电源,常规情况下,该浮动电源以带变压器的DC-DC转换器方式构成。通过将主要能量储备电容(14)分成二个电容(14,34),并且电容(34)与另一个电容(14)通过开关(36,38)进行耦合,该开关在撞车时处于打开状态,不再需要变压器。
Description
本发明涉及用于汽车的气囊系统。图1展示出一个常规的气囊系统包括若干引爆级2、4,微控制器6和撞车传感器8。引爆级2、4对流经爆管(squib)10、12的引爆电流进行开关切换以便在撞车时在恰当的时间引爆气囊。因为每个爆管需要二根导线,所以大量爆管需要大量导线。这些导线短路接地或者电池短路会引起不需要的气囊引爆。
在撞车时,有可能会失去连接至汽车电池的电气连接。因此所有气囊系统都包括一个能量储备电容(ERC)14以便在撞车时在有限的时间内维持该系统的运行。通过转换器装置16将该ERC电容14充电至一个相对高的电压,例如转换器装置16将12V的电池18的电压充至30V。该高电压被用来供应给引爆级2、4。电源20将该高电压转换成针对微控制器6和撞车传感器8的工作电压,通常为5V。
图2展示出一个常规的联网的气囊系统,该系统采用了将多个智能爆管22、24连接到总线驱动器26的双线引爆总线。该双线承载数据传输信号和至智能爆管22、24的电源供应。爆管10、12是实际引爆气囊的引爆器。用来引爆该爆管的能量被储备在智能爆管22、24内的局部电容中,用于引爆爆管的能量储备现在位于智能爆管内,但是仍然需要用于撞车传感器8和控制总线驱动器26的微控制器6的储备能量。
联网的气囊系统的优点之一是在总线导线中的一条线上发生故障时不会导致不想要的爆管展开。如果整个引爆总线由一个浮动电源供电,那么在该总线上的公共模式电压是不确定的。这意味着在总线导线中的一条线短路接地或接电池电压时系统仍然正常运行。为了构成浮动电源,需要一个带变压器30的DC-DC转换器28。但是变压器是一种昂贵的部件。
本发明的目的是提供一种无变压器的气囊系统。为实现此目的,本发明提供了一种气囊系统,该气囊系统包括用于引爆气囊的引爆器;用于引爆器之间相互连接的引爆总线;用于给引爆总线供应能量的总线驱动器;用于给该气囊系统提供电源电压的主要能量储备电容;其中通过开关设置有与主要能量储备电容并联耦合的另一个能量储备电容,用于接收电源电压并提供给该总线驱动器;用于将另一个能量储备电容上的电源电压转换成针对总线驱动器的工作电压的电源;并且在发生撞车的情况下打开开关的装置。该能量储备电容器分成二部分:主要部分提供给微控制器和撞车传感器,以及另一部分提供给该浮动总线驱动器。该另一部分通过在撞车时打开的开关被连接至主要部分。该开关将能量储备电容器的另一部分以及与之相连的所有部件同系统其它部分断开,所以在撞车时形成了浮动电源。
通过下面参照附图的描述,本发明的上述和其它目标以及其特点将会变得更加明显。以下附图有:
图1是第一常规气囊系统的方块图;
图2是第二常规气囊系统的方块图;和
图3是根据本发明的气囊系统的方块图。
在附图中采用相同的标示符号对应的特征进行了标示。
图3是根据本发明的气囊系统的方块图。该系统有一个双线引爆总线32,该总线将多个智能爆管22、24连接至总线驱动器26。该双线32承载数据传输信号以及至智能爆管22、24的电源供应。爆管10、12是实际引爆气囊的引爆器。用来引爆爆管10、12的能量储备在处于智能爆管22、24内的本地电容器(未示出)中。用来引爆爆管10、12的能量储备在处于智能爆管22、24内。因为在撞车时,有可能会失去连接至汽车电池的电气连接。因此该气囊系统包括一个主要能量储备电容(ERC)14以便在撞车时在有限的时间内维持该系统的运行。通过转换器装置16将该ERC电容14充电至一个相对高的电压,例如转换器装置16将12V的电池18的电压充至30V。电源20将该高电压转换成针对撞车传感器8和控制总线驱动器26的微控制器6的工作电压,通常为5V。该系统还有另一个通过二个在正常情况下是闭合的开关与主要能量储备电容14并联的能量储备电容34。通过电源40将另一个能量储备电容34的相对高的电压转换成总线驱动器26的工作电压。
当开关36和38处于开的状态时,例如受来自微控制器6的控制信号42的控制,另一个能量储备电容34所储备的能量在撞车时足够供应总线驱动器26。在这种方式中,该另一个能量储备电容器34和所有与之相连的部件同系统其它部分脱离开,所以在撞车时形成了浮动电源。这意味着在总线导线中的一条线短路接地或接电池电压时系统仍然正常运行。
Claims (3)
1.一种气囊系统,包括:
用于引爆气囊的引爆器(10,12);
一个用于引爆器(10,12)之间相互连接的引爆总线(32);
一个用于给引爆总线(32)供应能量的总线驱动器(26);
一个用于给该气囊系统提供电源电压的主要能量储备电容(14);
其特征在于,
通过开关(36,38)设置有与主要能量储备电容(14)并联耦合的另一个能量储备电容(34),用于接收电源电压和向该总线驱动器供电;
一个用于将另一个能量储备电容(34)上的电源电压转换成针对总线驱动器(26)的工作电压的电源(40);并且
在发生撞车的情况下打开开关(36,38)的装置(6,42)。
2.如权利要求1所述的气囊系统,其中在发生撞车的情况下打开开关(36,38)的所述装置(6,42)包括微机控制器(6)。
3.如权利要求1或2所述的气囊系统,其中所述的引爆总线(32)包括两条线以承载数据传输信号和向该引爆器(10,12)供电。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00201396 | 2000-04-19 | ||
EP00201396.9 | 2000-04-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1366500A CN1366500A (zh) | 2002-08-28 |
CN1227122C true CN1227122C (zh) | 2005-11-16 |
Family
ID=8171364
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB018009891A Expired - Lifetime CN1227122C (zh) | 2000-04-19 | 2001-04-09 | 无变压器的容错气囊总线系统 |
Country Status (8)
Country | Link |
---|---|
US (1) | US6512308B2 (zh) |
EP (1) | EP1276643B1 (zh) |
JP (1) | JP2003531061A (zh) |
KR (1) | KR100742413B1 (zh) |
CN (1) | CN1227122C (zh) |
AT (1) | ATE270983T1 (zh) |
DE (1) | DE60104298T2 (zh) |
WO (1) | WO2001081122A1 (zh) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003523866A (ja) * | 1999-12-16 | 2003-08-12 | シーメンス アクチエンゲゼルシヤフト | 車両乗員保護システム等に対する緊急時の給電を制御する方法並びに緊急時給電システム |
DE10201756A1 (de) * | 2002-01-18 | 2003-07-31 | Bosch Gmbh Robert | Schaltungsanordnung zur kurzzeitigen Aufrechterhaltung wenigstens einer internen Betriebs-Gleichspannung beim Ausfall der Bordnetz-Versorgungsspannung |
US6979020B2 (en) * | 2002-01-25 | 2005-12-27 | Daicel Chemical Industries, Ltd. | Air bag system |
JP4205985B2 (ja) * | 2002-04-25 | 2009-01-07 | ダイセル化学工業株式会社 | コンデンサの充電容量の決定方法 |
US7155353B2 (en) * | 2002-04-25 | 2006-12-26 | Daicel Chemical Industries, Ltd. | Method for determining charging capacitance of capacitor |
DE10255431A1 (de) * | 2002-11-28 | 2004-06-09 | Conti Temic Microelectronic Gmbh | Verfahren zur Begrenzung des Einschaltstromes eines von einer DC-Spannungsquelle gespeisten DC-Wandlers |
DE10319336A1 (de) * | 2003-04-30 | 2004-11-18 | Robert Bosch Gmbh | Vorrichtung und Verfahren zur Überwachung wenigstens eines Energiereservekondensators in einem Rückhaltesystem |
DE10360422A1 (de) * | 2003-12-19 | 2005-07-21 | Brose Schließsysteme GmbH & Co.KG | Kraftfahrzeug |
JP4400340B2 (ja) * | 2004-06-30 | 2010-01-20 | 株式会社デンソー | 乗員保護システム |
US7232001B2 (en) * | 2004-08-24 | 2007-06-19 | Sam Hakki | Collision air bag and flotation system |
DE102005045233A1 (de) * | 2005-09-22 | 2007-03-29 | Robert Bosch Gmbh | Steuergerät für den Personenschutz |
DE102007056363A1 (de) * | 2007-01-25 | 2008-07-31 | Continental Teves Ag & Co. Ohg | Kraftfahrzeug-Bordnetz |
DE102008012896A1 (de) * | 2008-03-06 | 2009-09-10 | Robert Bosch Gmbh | Steuergerät und Verfahren zur Ansteuerung von Personenschutzmitteln für ein Fahrzeug |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3920713A1 (de) * | 1989-06-24 | 1991-01-10 | Bosch Gmbh Robert | Insassen-sicherheitseinrichtung fuer fahrzeuge |
US5420790A (en) * | 1994-03-10 | 1995-05-30 | Delco Electronics Corporation | Energy reserve circuit for supplemental inflatable restraint |
US5734317A (en) * | 1996-07-01 | 1998-03-31 | Motorola, Inc. | Current limit controller for an air bag deployment system |
US5936313A (en) * | 1997-08-06 | 1999-08-10 | Siemens Automotive Corp. | Switched capacitor circuit for firing vehicle airbag squibs |
DE19813922A1 (de) * | 1998-03-28 | 1999-09-30 | Telefunken Microelectron | Verfahren zum Betreiben eines über eine Busleitung vernetzten Rückhaltesystems bei einem Kurzschluß |
DE19813921A1 (de) * | 1998-03-28 | 1999-09-30 | Telefunken Microelectron | Verfahren zum Betreiben eines über eine Busleitung vernetzten Rückhaltesystems bei einer fehlerhaften Stromversorgung |
-
2001
- 2001-04-09 CN CNB018009891A patent/CN1227122C/zh not_active Expired - Lifetime
- 2001-04-09 WO PCT/EP2001/004032 patent/WO2001081122A1/en active IP Right Grant
- 2001-04-09 KR KR1020017016246A patent/KR100742413B1/ko not_active IP Right Cessation
- 2001-04-09 DE DE60104298T patent/DE60104298T2/de not_active Expired - Lifetime
- 2001-04-09 AT AT01933806T patent/ATE270983T1/de not_active IP Right Cessation
- 2001-04-09 EP EP01933806A patent/EP1276643B1/en not_active Expired - Lifetime
- 2001-04-09 JP JP2001578237A patent/JP2003531061A/ja not_active Withdrawn
- 2001-04-19 US US09/837,947 patent/US6512308B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO2001081122A1 (en) | 2001-11-01 |
CN1366500A (zh) | 2002-08-28 |
JP2003531061A (ja) | 2003-10-21 |
ATE270983T1 (de) | 2004-07-15 |
DE60104298D1 (de) | 2004-08-19 |
US6512308B2 (en) | 2003-01-28 |
KR20020022707A (ko) | 2002-03-27 |
US20010054846A1 (en) | 2001-12-27 |
EP1276643A1 (en) | 2003-01-22 |
KR100742413B1 (ko) | 2007-07-24 |
EP1276643B1 (en) | 2004-07-14 |
DE60104298T2 (de) | 2005-08-25 |
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Owner name: NXP CO., LTD. Free format text: FORMER OWNER: ROYAL PHILIPS ELECTRONICS CO., LTD. Effective date: 20070831 |
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Effective date of registration: 20070831 Address after: Holland Ian Deho Finn Patentee after: Koninkl Philips Electronics NV Address before: Holland Ian Deho Finn Patentee before: Koninklike Philips Electronics N. V. |
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Granted publication date: 20051116 |