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1. 发明授权

US5760489A Method for transmitting signals between a microprocessor and an interface circuit 失效
标题翻译：用于在微处理器和接口电路之间传输信号的方法
公开(公告)号：US5760489A
公开(公告)日：1998-06-02
申请号：US726023
申请日：1996-10-04
申请人： Benjamin R. Davis , John M. Pigott , Kevin S. Anderson , Charles R. Powers
发明人： Benjamin R. Davis , John M. Pigott , Kevin S. Anderson , Charles R. Powers
IPC分类号： B60R21/16 , B60R16/02 , B60R16/03 , B60R21/01 , B60R21/00
CPC分类号： B60R21/017 , B60R16/0315 , B60R2021/01075 , B60R2021/01115
摘要： A control module (11) in an airbag system (10) 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 (20A-20N) and partially stored within the remote modules (20A-20N) for deploying squibs (22A-22N). The control module (11) sends command signals to the remote modules 20A-20N) via voltage excursions between a high and an intermediate voltage levels. The remote modules (20A-20N) 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 of the airbag system (10). The control module (11) then sends out firing signals via voltage excursion between the intermediate and low voltage levels. The remote modules (20A-20N) decode the firing signals and deploy the squibs (22A-22N) to inflate airbags.
摘要翻译：气囊系统（10）中的控制模块（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。提供的电能被部分地用于操作远程模块（20A-20N）并部分地存储在远程模块（20A-20N）内，用于展开爆管（22A-22N）。控制模块（11）通过高电压和中间电压电平之间的电压偏移向远程模块20A-20N发送命令信号。远程模块（20A-20N）通过电流偏移向控制模块（11）发送信号。当检测到事故情况时，两线连接处的电压降低到低电压水平，从而中断气囊系统（10）的正常操作。控制模块（11）然后通过中间和低电压电平之间的电压偏移发出触发信号。远程模块（20A-20N）对点火信号进行解码并且布置点火器（22A-22N）以使安全气囊膨胀。

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