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    • 9. 发明专利
    • Method for transmitting signal between microprocessor and interface circuit
    • 微处理器与接口电路之间发送信号的方法
    • JP2007215197A
    • 2007-08-23
    • JP2007035734
    • 2007-02-16
    • Freescale Semiconductor Incフリースケール セミコンダクター インコーポレイテッド
    • DAVIS BENJAMIN RPIGOTT JOHN MANDERSON KEVIN SPOWERS CHARLES R
    • B60R21/16H04L12/403B60R16/02B60R16/03B60R21/01
    • B60R21/017B60R16/0315B60R2021/01075B60R2021/01115
    • PROBLEM TO BE SOLVED: To simplify the configuration and to improve reliability, energy efficiency and cost efficiency in a signal transmission method available for an airbag system.
      SOLUTION: A control module 11 supplies electrical energy to and communicates with remote modules 20A-20N through a two-wire connection. The supplied electrical energy is partially used to operate the remote modules and partially stored within the remote modules. The control module 11 sends command signals to the remote modules via voltage excursions between a high and an intermediate voltage levels. The remote modules send signals to the control module 11 via current excursions. When an accident situation is detected, the voltage across the two-wire connection is lowered to a low voltage level, thereby interrupting a normal operation. The control module 11 then sends out firing signals via voltage excursion between the intermediate and low voltage levels. The remote modules decode the firing signals and deploy squibs to inflate airbags.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:为了简化配置并提高可用于气囊系统的信号传输方法的可靠性,能源效率和成本效率。 解决方案:控制模块11通过双线连接向远程模块20A-20N提供电能并与远程模块20A-20N通信。 提供的电能部分用于操作远程模块并部分存储在远程模块内。 控制模块11通过高电压和中间电压电平之间的电压偏移将命令信号发送到远程模块。 远程模块通过电流偏移发送信号到控制模块11。 当检测到事故情况时,两线连接两端的电压降低到低电平,从而中断正常工作。 然后,控制模块11通过中间和低电压电平之间的电压偏移发出发射信号。 远程模块解码发射信号并部署爆管使气囊膨胀。 版权所有(C)2007,JPO&INPIT