Safing method for a vehicle occupant protection safety system
First Claim
1. A method of safing a vehicle occupant protection activation system comprising the steps of:
- (1) transmitting a safing message;
(2) replying to said safing message with a seed message; and
(3) transmitting a deploy command including said seed message.
2 Assignments
0 Petitions
Accused Products
Abstract
A vehicle occupant protection activation system includes a satellite sensor which communicates with a safety controller for controlling each safety system. If a heightened likelihood of a vehicle crash or roll-over condition exists, the satellite sensor sends a safing message to the safety controller. When the safing message is received by the safety controller, it responds to the satellite sensor with a safing response including a seed message therein. The seed message is temporarily stored in the safety controller and is also stored by the satellite sensor. If it is determined that the event requires deployment, the satellite sensor sends a deploy command to the safety controller that includes the seed message therein to authenticate the command. The safing controller is thus assured that the deploy command is authorized and inadvertent deployment due to a single point fault in the satellite sensor is prevented.
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Citations
20 Claims
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1. A method of safing a vehicle occupant protection activation system comprising the steps of:
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(1) transmitting a safing message;
(2) replying to said safing message with a seed message; and
(3) transmitting a deploy command including said seed message. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of safing a vehicle occupant protection activation system comprising the steps of:
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(1) determining whether a heightened likelihood of an event condition exists;
(2) transmitting a safing message;
(3) replying to said safing message with a seed message;
(4) confirming that said event condition exists; and
(5) transmitting a deploy command including said seed message in response to said step (4). - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A vehicle occupant protection activation system, comprising:
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a satellite sensor;
a safety controller in communication with said satellite sensor, said satellite sensor including control logic for determining whether a heightened likelihood of a vehicle crash or rollover event condition exists and for sending a safing message in response thereto;
a safety controller in communication with an occupant protection safety system and said satellite sensor, said safety controller responsive to said safing message with a seed message, said safety controller operable to deploy said occupant protection safety system only in response to a deploy command from said satellite sensor which includes said seed message. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification