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    • 4. 发明授权
    • Air bag system for protection of the occupants of motor vehicles
    • 用于保护机动车辆乘客的气囊系统
    • US5204547A
    • 1993-04-20
    • US663842
    • 1991-03-11
    • Hartmut SchumacherNorbert CrispinBernhard MattesEdmund Jeenicke
    • Hartmut SchumacherNorbert CrispinBernhard MattesEdmund Jeenicke
    • B60R21/16B60R21/01B60R21/017
    • B60R21/017
    • An air bag system for protecting the occupants of a motor vehicle in the event of a collision has a plurality of firing circuits comprising air bag igniters (3a,3b,3c) in series with respective power transistors (T.sub.1,T.sub.2,T.sub.3) which can be triggered in the event of an accident to inflate a corresponding plurality of air bags. A single energy storage capacitor (E) is connected to all of the firing circuits for supplying energy to activate the bag igniters over the upper common power stage (7) in the event that there is a loss of battery voltage when the system has been actuated. A comparator (9) monitors the voltage drops across respective resistors (R.sub.1,R.sub.2,R.sub.3) in series with the power transistors (T.sub.1,T.sub.2, T.sub.3) and reduces the current through these transistors in the event that an excessive current is detected. Steps are taken to ensure that the period of activation of the current supply to the igniters is limited.
    • PCT No.PCT / EP88 / 00837 371日期1991年3月11日 102(e)1991年3月11日PCT PCT。 出版物WO90 / 02674 日期:1990年3月22日。一种用于在发生碰撞的情况下保护机动车辆的乘客的安全气囊系统具有包括与各个功率晶体管(T1)串联的气囊点火器(3a,3b,3c)的多个点火回路 ,T2,T3),其可以在事故的情况下被触发以使相应的多个气囊膨胀。 在系统已被致动的情况下,单个储能电容器(E)连接到所有点火电路,用于提供能量以激活上部公共功率级(7)上的袋式点火器 。 比较器(9)监视与功率晶体管(T1,T2,T3)串联的相应电阻器(R1,R2,R3)上的电压降,并且在检测到过大电流的情况下,降低通过这些晶体管的电流。 采取步骤确保目前对点火器供应的启动期限是有限的。
    • 5. 发明授权
    • Detonation circuit for a vehicle air bag
    • 用于汽车空气袋的爆震电路
    • US5134306A
    • 1992-07-28
    • US466340
    • 1990-05-09
    • Hartmut SchumacherNorbert CrispinBernhard Mattes
    • Hartmut SchumacherNorbert CrispinBernhard Mattes
    • B60R21/16B60R21/01B60R21/017F42B3/12F42D1/045G01R31/00
    • B60R21/017F42D1/045G01R31/006
    • A detonation circuit for an inflation capsule (10) of a vehicle air bag has a capacitor (20) which supplies energy to the capsule during a crash condition. The circuit has a transformer (12), the energy source (20) being electrically connectible to the primary coil (P) thereof by two transistors (30, 48) which assume a conducting state when associated control means (16, 18) determine that a crash condition has occurred. Only when both transistors conduct can the energy source (20) cause a change in the current flow through the primary coil (P), which in turn induces a change in current in the secondary coil (S) to which the capsule (10) is connected.It has been found that by monitoring the voltage and current characteristics in the primary coil (P), the state of the capsule (10) can be monitored. For example, it can be determined whether the capsule has fired, and if so further firing pulses may be suppressed.
    • PCT No.PCT / EP88 / 00819 Sec。 371日期1990年5月9日 102(e)日1990年5月9日PCT提交1988年9月9日PCT公布。 出版物WO90 / 02672 日期:1990年3月22日。用于汽车安全气囊的充气胶囊(10)的爆震回路具有在碰撞状态期间向胶囊提供能量的电容器(20)。 该电路具有变压器(12),能量源(20)可通过两个晶体管(30,48)与初级线圈(P)电连接,当相关联的控制装置(16,18)确定 发生了碰撞状况。 只有当两个晶体管导通时,能量源(20)才能引起通过初级线圈(P)的电流的变化,这又导致了胶囊(10)所在的次级线圈(S)中的电流变化 连接的。 已经发现,通过监测初级线圈(P)中的电压和电流特性,可以监视胶囊(10)的状态。 例如,可以确定胶囊是否已经燃烧,并且如果可以抑制进一步的点火脉冲。