Electronic device and method for actuating a passenger-protection system
    1.
    发明授权
    Electronic device and method for actuating a passenger-protection system 失效
    用于启动乘客保护系统的电子设备和方法

    公开(公告)号:US6068287A

    公开(公告)日:2000-05-30

    申请号:US029411

    申请日:1998-04-24

    CPC分类号: B60R21/017

    摘要: An electronic device includes a sensor which detects acceleration values, and a control unit linked to the sensor. The control unit drives switching elements, which are disposed in a series circuit including at least one squib. When the switching elements are driven, the squib receives a current. This current flows at the same time through the also series-connected resistor, across which a voltage drop arises, which is analyzed by a comparator. The pulse duty factor of the current driving is modified as a function of the amperage of the current flowing through the squib.

    摘要翻译: PCT No.PCT / DE96 / 01472 Sec。 371日期:1998年4月24日 102(e)1998年4月24日PCT PCT 1996年8月7日PCT公布。 第WO97 / 08022号公报 日期1997年3月6日电子设备包括检测加速度值的传感器和连接到传感器的控制单元。 控制单元驱动设置在包括至少一个爆管的串联电路中的开关元件。 当开关元件被驱动时,点火器接收电流。 该电流同时通过串联连接的电阻器流过,由此产生电压降,由比较器进行分析。 电流驱动的脉冲占空比被修改为流过爆管的电流的电流强度的函数。

    Watchdog circuit
    2.
    发明授权
    Watchdog circuit 失效
    看门狗电路

    公开(公告)号:US06463555B2

    公开(公告)日:2002-10-08

    申请号:US09381777

    申请日:1999-09-23

    IPC分类号: G06F1130

    CPC分类号: G06F11/0757

    摘要: A watchdog circuit (WD) monitors the function of the processor (MC) in that the processor (MC) outputs a cyclically repeating test signal to the watchdog circuit (WD), and the watchdog circuit (WD) generates a reset signal (RST) for the processor (MC) if the test signal (WDS) does not appear in a time slot (S1, S2) specified by the watchdog circuit (WD). The width of the time slot (S1, S2) can be increased in the starting phase of a program sequence of the processor (MC).

    摘要翻译: 看门狗电路(WD)监视处理器(MC)的功能,处理器(MC)将循环重复的测试信号输出到看门狗电路(WD),看门狗电路(WD)产生复位信号(RST) 对于处理器(MC),如果测试信号(WDS)不出现在看门狗电路(WD)指定的时隙(S1,S2)中。 可以在处理器(MC)的程序序列的起始阶段增加时隙(S1,S2)的宽度。

    Signal-processing circuit arrangement for status signals of a resistive foil pressure sensor
    3.
    发明授权
    Signal-processing circuit arrangement for status signals of a resistive foil pressure sensor 失效
    用于电阻箔压力传感器状态信号的信号处理电路装置

    公开(公告)号:US06297641B1

    公开(公告)日:2001-10-02

    申请号:US09254107

    申请日:1999-02-24

    IPC分类号: G01R3108

    摘要: The simplified signal-processing circuit arrangement for processing and evaluating signals indicative of the status of an FSR-foil pressure sensor utilized in a seat-occupancy detection device, makes use of the fact that an application-oriented, integrated circuit, present in a motor vehicle having digital open-loop and closed-loop control functions implemented in a microcontroller MCU, contains a highly precise, switchable test-voltage source. One end of a circuit containing the FSR-foil is connected to a switching output VTA of the ASIC carrying the highly precise test voltage. The other end of this circuit is connected to a port of the MCU. A measuring voltage, which is a function of the status-contingent current intensity through the FSR-foil, drops off across a reference resistor connected in series to the FSR-foil, is fed to an analog-digital converter input of the MCU, and is converted therein into a digital signal indicating the occupancy status of the FSR-foil. Thus, using only one precise, switchable, d.c. voltage source, one port of the MCU and one ADC port, it is possible to evaluate the OCCUPIED/NOT OCCUPIED status of the FSR-foil, as well as to detect various fault conditions.

    摘要翻译: 用于处理和评估表示座椅占用检测装置中使用的FSR箔压力传感器的状态的信号的简化信号处理电路装置利用了存在于电动机中的面向应用的集成电路 具有在微控制器MCU中实现的数字开环和闭环控制功能的车辆包含高精度,可切换的测试电压源。 包含FSR箔的电路的一端连接到具有高精度测试电压的ASIC的开关输出VTA。 该电路的另一端连接到MCU的端口。 通过FSR箔片的状态 - 偶然电流强度的函数的测量电压在与FSR箔片串联连接的参考电阻上掉落,被馈送到MCU的模拟 - 数字转换器输入端,以及 在其中转换为指示FSR箔的占用状态的数字信号。 因此,仅使用一个精确的,可切换的直流 电压源,MCU的一个端口和一个ADC端口,可以评估FSR箔的OCCUPIED / NOT OCCUPIED状态,并检测各种故障状况。

    Airbag system
    4.
    发明授权
    Airbag system 有权
    安全气囊系统

    公开(公告)号:US06097284A

    公开(公告)日:2000-08-01

    申请号:US91718

    申请日:1998-10-26

    IPC分类号: B60R21/01 B60Q1/00

    CPC分类号: B60R21/01

    摘要: Arranged in a triggering circuit of an airbag system are two switching elements which enclose a firing pellet. The switching elements are driven by way of assemblies and logic elements, respectively, in such a way that two separate criteria must be fulfilled for the transfer of each switching element into its conductive state.

    摘要翻译: PCT No.PCT / DE96 / 02376 Sec。 371日期:1998年10月26日 102(e)1998年10月26日PCT 1996年12月11日PCT PCT。 公开号WO97 / 23369 日期1997年7月3日安全气囊系统的触发电路是两个开关元件,它们包围一个点火球。 开关元件分别通过组件和逻辑元件驱动,使得为了将每个开关元件传送到其导通状态必须满足两个单独的标准。

    Evaluation process and evaluation device for sensor output signals
    9.
    发明授权
    Evaluation process and evaluation device for sensor output signals 失效
    传感器输出信号的评估过程和评估设备

    公开(公告)号:US5101115A

    公开(公告)日:1992-03-31

    申请号:US409111

    申请日:1989-09-19

    摘要: In an evaluation process for output signals of an acceleration-sensitive sensor in restraint systems for vehicle occupants, the output signals of the sensor are picked up and evaluated periodically. In a normal, uncritical operating state the evaluation occurs after relatively long intervals of time. If indications suggest a critical operating state, that is, an accident, however the evaluation of the output signals of the sensor occurs at shorter intervals of time.

    摘要翻译: 在用于车辆乘员的约束系统中的加速度敏感传感器的输出信号的评估处理中,传感器的输出信号被周期性地拾取和评估。 在正常的,不重要的运行状态下,评估发生在较长的时间间隔之后。 如果有迹象显示关键的运行状态,即事故,则传感器的输出信号的评估发生在更短的时间间隔。

    Method and apparatus for monitoring the operation of a
computer-controlled operating element, particularly triggered safety
apparatus for an automotive vehicle
    10.
    发明授权
    Method and apparatus for monitoring the operation of a computer-controlled operating element, particularly triggered safety apparatus for an automotive vehicle 失效
    用于监测计算机控制的操作元件的操作的方法和装置,特别是用于机动车辆的触发安全装置

    公开(公告)号:US4864202A

    公开(公告)日:1989-09-05

    申请号:US107379

    申请日:1987-10-09

    摘要: To prevent spurious operation of a controlled operating element (12), typically a safety element which can be irreversibly triggered, such as a trigger or firing cartridge of a passenger restraint airbag, while providing for reliable operation in case of a crash of a vehicle in which the airbag is installed, a control signal is derived from a computer (10) processing input signals. The transmission of the control signals from the computer (10) to the operating element (12) is through a time delay stage (30) which has a time delay of sufficient length to permit the computer to correct, if necessary, signals from its output (16) and to carry out tests on the output signals from the computer apparatus. An evaluation circuit (18) continuously compares the output signals with check values. The check values may be derived from, for example a second computer similar to the computer, or from stored representative values. If the comparison indicates coincidence, the operating control signal from the computer is transmitted to the operating element (12). If, however, e.g. due to extraneous disturbances, a deviation between the test samples and the signals derived from the output (16) of the computer indicates a deviation, transmission of the control signals from the computer (10) to the operating element (12) is prevented, and the computer is controlled to repeat its computation, or part of a computation cycle.

    摘要翻译: 为了防止受控操作元件(12)的杂散操作,通常是可以不可逆地触发的安全元件,例如乘客约束气囊的触发器或发射筒,同时在车辆碰撞的情况下提供可靠的操作 气囊被安装在控制信号上,来自计算机(10)的处理输入信号。 控制信号从计算机(10)传输到操作元件(12)的时间延迟阶段(30),其具有足够长的时间延迟,以允许计算机在需要时校正来自其输出端的信号 (16),并对来自计算机装置的输出信号进行测试。 评估电路(18)连续地将输出信号与检查值进行比较。 检查值可以从例如类似于计算机的第二计算机或从存储的代表值导出。 如果比较指示一致,来自计算机的操作控制信号被传送到操作元件(12)。 但是, 由于外部干扰,测试样本与从计算机的输出(16)导出的信号之间的偏差指示偏差,防止从计算机(10)到操作元件(12)的控制信号的传输,以及 控制计算机重复其计算或计算周期的一部分。