发明名称 |
Method for transmitting signals between a microprocessor and an interface circuit |
摘要 |
<p>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. <IMAGE></p> |
申请公布号 |
EP0834813(A2) |
申请公布日期 |
1998.04.08 |
申请号 |
EP19970116850 |
申请日期 |
1997.09.29 |
申请人 |
MOTOROLA, INC. |
发明人 |
DAVIS, BENJAMIN R.;PIGOTT, JOHN M.;ANDERSON, KEVIN S.;POWERS, CHARLES R. |
分类号 |
B60R21/16;B60R16/02;B60R16/03;B60R21/01;(IPC1-7):G06F13/40;B60R21/00 |
主分类号 |
B60R21/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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