公开(公告)号：US06559557B2

公开(公告)日：2003-05-06

申请号：US09742792

申请日：2000-12-20

申请人： Gregory J. Manlove ,  Lee C. Boger

发明人： Gregory J. Manlove ,  Lee C. Boger

IPC分类号： B60R2101

CPC分类号： B60R21/013 ,  B60R2021/01027 ,  B60R2021/01177

摘要： An error detection circuit for an airbag deployment control system includes a delay circuit receiving an analog acceleration signal, a difference circuit producing a difference signal based on a time difference between the original and delayed acceleration signals, and a first comparator circuit comparing the difference signal to first and second threshold signals. If the difference signal falls within an error region defined between the first and second threshold values, a decision circuit inhibits an otherwise pending airbag deployment event. If, on the other hand, the difference signal falls outside of the error region, the decision circuit allows airbag deployment with minimal delay. The error detection circuit further includes a second comparator circuit comparing the acceleration signal to near-supply and near-ground threshold values, wherein the decision circuit also inhibits airbag deployment if the acceleration signal magnitude exceeds the near-supply threshold value or falls below the near-ground threshold value.