Lateral inclination angle detector for passenger-protecting device for use in automotive vehicle
US6827172B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2002 |
| Grant date | Dec 7, 2004 |
| Priority date | — |
| Expiry date | Mar 21, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/01306
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A passenger-protecting device such as an air-bag system is activated upon detection of a vehicle lateral inclination angle exceeding a predetermined critical level. Such detection is performed by a lateral inclination detector having a pair of gravitational acceleration sensors for detecting a static road inclination and an angular velocity sensor for detecting a dynamic roll angle of the vehicle. Sensing directions of the pair of gravitational acceleration sensors are positioned to cross each other with a right angle and to make an angle of 45° with respect to a vehicle floor. The dynamic roll angle is calculated by integrating outputs of the angular velocity sensor. The vehicle inclination angle is obtained to summing up the static inclination angle and the roll angle. The passenger-protecting device is timely activated to protect passengers from overturn impact of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.