Apparatus and method for detecting vehicle rollover having roll-rate switched threshold

The present invention relates to an occupant protection system and, more particularly, to an apparatus and method for detecting a vehicle rollover event for use with an actuatable occupant rollover protection device. A vehicle rollover event detector () includes an accelerometer () that senses vehic...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Foo, Chek-Peng, Yeh, Huahn-Fern, Chang, Shun-Hsin
Format: Patent
Sprache:eng
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The present invention relates to an occupant protection system and, more particularly, to an apparatus and method for detecting a vehicle rollover event for use with an actuatable occupant rollover protection device. A vehicle rollover event detector () includes an accelerometer () that senses vehicle acceleration in a direction offset from a front-to-rear axis of the vehicle () and provides an acceleration signal () indicative thereof. A rollover sensor () senses vehicle roll and provides a roll signal () indicative of vehicle roll about the front-to-rear axis of the vehicle. A controller () compares the roll signal () against a first rollover threshold () when the acceleration signal () is less than an acceleration threshold () and compares the roll signal () against a second rollover threshold () when the acceleration signal () is equal to or greater than the acceleration threshold () and for indicating a vehicle rollover condition when the roll signal is greater than the threshold () it is compared against.