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:
Aug. 06, 2002
Filed:
Nov. 23, 1998
Joseph Thomas Dalum, Noblesville, IN (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
An improved deployment method for a vehicular supplemental restraint system having an acceleration sensor and a restraint device to be deployed for occupant protection in a crash event, where the deployment threshold is adaptively adjusted based on the magnitude and rate of change of a filtered acceleration signal and the progression level of the sensed event. The deployment threshold is periodically adjusted based on the rate of change of the filtered acceleration signal, if the magnitude of the filtered acceleration signal is within a range specified for the progression level of the sensed event. The maximum amount of adjustment is also specified based on the progression level of the event. As a result, the deployment threshold tends to follow or track the filtered acceleration signal, particularly for non-deployment events where the magnitude of the filtered acceleration signal is within the specified range, thereby preventing deployment of the restraints. In deployment events, the magnitude of the filtered acceleration signal is more likely to fall outside the specified range, which minimizes feed-forward adjustment of the deployment threshold, thereby minimizing any delay in deployment of the restraints.