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    • 8. 发明授权
    • Auxiliary acceleration sensor device for an air bag system
    • 用于气囊系统的辅助加速度传感器装置
    • US06353782B1
    • 2002-03-05
    • US09323930
    • 1999-06-02
    • Takashi KunimiMasahiro NezuMasatomo MoriKazuya Kato
    • Takashi KunimiMasahiro NezuMasatomo MoriKazuya Kato
    • B60R2132
    • B60R21/0132B60R2021/0009B60R2021/01027Y10T307/799
    • To improve a response rate and an impact detection precision of an auxiliary acceleration sensor device for an air bag system, an auxiliary acceleration sensor device includes a longitudinal G sensor for sensing a longitudinal acceleration G of a vehicle, and lateral G sensor for sensing a lateral acceleration G of the vehicle. The longitudinal G sensor includes a constant current source circuit, a detector portion for outputting an electrical signal representative of a longitudinal acceleration G, and an amplifier portion for amplifying the signal received from the detecting portion. The comparator includes comparing elements that compare the voltage values corresponding to longitudinal threshold values Tf1 to Tf4 of the longitudinal acceleration G with an output signal of the amplifier portion. Lateral G sensor includes a constant current source circuit, a detector portion for outputting an electrical signal representative of a lateral acceleration G, and an amplifier portion for amplifying the signal received from the detecting portion. Comparator means includes comparing elements which compare the voltages corresponding to lateral threshold values Ts1 to Ts4 of the lateral acceleration G with the output signal of the amplifier portion. An OR circuit coupled for reception with the comparator means outputs a signal to a main controller of an air bag control system when predetermined conditions are satisfied.
    • 为了提高用于气囊系统的辅助加速度传感器装置的响应速度和冲击检测精度,辅助加速度传感器装置包括用于感测车辆的纵向加速度G的纵向G传感器和用于感测侧向 车辆的加速度G。 纵向G传感器包括恒流源电路,用于输出表示纵向加速度G的电信号的检测器部分和用于放大从检测部分接收的信号的放大器部分。 比较器包括比较与纵向加速度G的纵向阈值Tf1至Tf4相对应的电压值与放大器部分的输出信号的元件。 横向G传感器包括恒流源电路,用于输出表示横向加速度G的电信号的检测器部分和用于放大从检测部分接收的信号的放大器部分。 比较器装置包括比较与横向加速度G的横向阈值Ts1至Ts4相对应的电压与放大器部分的输出信号进行比较的元件。 与比较器装置相连接的OR电路当满足预定条件时,将信号输出到气囊控制系统的主控制器。