Dynamic safety shields for situation assessment and decision making in collision avoidance tasks
US9280899B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2013 |
| Grant date | Mar 8, 2016 |
| Priority date | — |
| Expiry date | Feb 6, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/163
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system and method provided on an ego-vehicle for assessing potential threats in a vehicle collision avoidance system, and/or to plan safety-allowed vehicle trajectories for vehicle path planning. The method includes detecting objects in a predetermined vicinity around the ego-vehicle, and determining the relative velocity or other measure between each detected object and the ego-vehicle. The method defines a virtual dynamic safety shield around each detected object that has a shape, size and orientation that is determined by predetermined properties related to the current state of traffic around the ego-vehicle. The method also defines an action grid around the ego-vehicle. The method assesses the threat level of a potential collision between each detected object based on how the shield for that object and the action grid interact. The interaction between the shields and the grid induces actions aimed at aborting collisions and allows for trajectory planning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.