System and method for the detection and discrimination of vehicle crash events
US5899948A · kind A · utility
Inventors
Key dates
| Filing date | Feb 6, 1997 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Feb 6, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R21/01336
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system and method for controlling deployment of an inflatable passenger restraint utilize distance-based thresholds to improve deployment time in high-speed crash events and to improve event discrimination for side impacts. The invention uses an acceleration signal to calculate distance and to calculate average acceleration using three buffers holding differing numbers of samples. The three average accelerations are used to determine the length of the acceleration curves above and below the zero axis which is defined as positive and negative jerk. Average acceleration and jerk are compared to the distance-based thresholds to determine whether or not to deploy the inflatable restraint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.