Apparatus and method employing multiple crash evaluation algorithms for actuating a restraint system in a passenger vehicle
US4994972A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 6, 1989 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Nov 6, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R21/01332
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Apparatus and method are presented for actuating a passenger restraint system in a passenger vehicle. A sensor senses vehicle deceleration and provides a deceleration signal having a value which varies in accordance therewith. A plurality of crash evaluation circuits each respond to the deceleration signal for evaluating the deceleration signal in accordance with respectively different crash evaluation algorithms. Each evaluation circuit provides a vote signal when its evaluation of the deceleration signal indicates that the restraint system should be actuated. The vote signals are summed to provide a summation signal. The summation signal has a fractional value dependent upon the ratio of the number of vote signals to the total number of evaluation votes. The restraint sytsem is actuated when the summation signal exceeds a threshold level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.