Use of vehicle dynamics to determine impact location
US10919475B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2016 |
| Grant date | Feb 16, 2021 |
| Priority date | — |
| Expiry date | Sep 25, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R21/0136
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Crash detection in a road vehicle includes determining an impact location. Acceleration and yaw rate are measured, and occurrence of an impact is detected by comparing a total acceleration to an impact threshold. An impact angle is determined according to an arctangent of a ratio of lateral and longitudinal accelerations. A center-of-gravity to impact distance is determined according to vehicle mass, moment of inertia, acceleration, and yaw rate. When the yaw rate is less than a yaw threshold and the impact angle is within a predetermined range of an integer multiple of 90°, then the impact location is determined in response to a projection of the impact distance selected according to signs of the accelerations. Otherwise, the impact location is determined in response to a projection of the impact distance selected according to signs of the accelerations and a sign of the yaw rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.