Electrical transmission or interconnection systems – Vehicle mounted systems – Automobile
Patent
1996-07-25
1998-12-08
Elms, Richard T.
Electrical transmission or interconnection systems
Vehicle mounted systems
Automobile
180282, 280735, 340436, B60R 2132
Patent
active
058474722
ABSTRACT:
A method for recording the operation time of an air bag system and an apparatus for the recording the operation state and the operation time of each module of an air bag system at the moment of operation of an air bag system, are disclosed. Time is initialized, and then it is judged whether or not a collision sensing signal has been transmitted from a collision sensor. When the collision sensing signal has been transmitted, the collision sensing signal is compared with a preset point. When the collision sensing signal exceeds the preset point, a control circuit outputs a control signal to operate an air bag, and measuring the time. Next, whether or not the control signal has been normally transmitted is judged. When the control signal has not been normally transmitted, a first system error is recorded in a memory device. When the control signal has been normally transmitted, a transmission time of the control signal is recorded. Then, whether or not the air bag had normally expanded is judged. When the air bag has been normally expanded, a second system error is recorded in the memory device. When the air bag has not been normally expanded, an expansion time of the air bag is recorded. This air bag system secures the trust of the user by enabling the user to know after the air bag had been expanded whether or not the air bag modules correctly operated within the set time.
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Daewoo Electronics Co. Ltd.
Elms Richard T.
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