Method for controlling expansion of an air bag
US7184870B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 16, 2003 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Jul 22, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R21/0156
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The method for expanding an air bag includes the steps of: detecting a variation of a deceleration of a vehicle during a vehicle collision and applying the detected deceleration signal to a microcomputer. Analyzing a collision waveform generated according to the deceleration signal and determining an impact degree of the vehicle. Temporarily stopping an operation of the deceleration detector at the microcomputer. Initializing an initial collision waveform while the operation of the deceleration detector is stopped, the initial collision waveform being inputted before the microcomputer stops the operation of the deceleration detector. Re-operating the deceleration detector at the microcomputer, detecting again a variation of the deceleration of the vehicle at the deceleration detector, and applying the newly detected deceleration signal to the microcomputer. When the collision waveform, generated according to the applied deceleration signal, reaches a set value, activate an air bag driving unit at the microcomputer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.