The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 1998
Filed:
Jul. 25, 1996
Sung-Kwang Byon, Seoul, KR;
Daewoo Electronics Co., Ltd., Seoul, KR;
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.