Estimated time-to-collision (TTC) calculation apparatus and estimated TTC calculation method
US10384658B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 3, 2015 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Oct 5, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2201/022
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An estimated time-to-collision (TTC) calculation apparatus includes a distance acquisition unit, relative velocity acquisition unit, relative acceleration acquisition unit, and estimated TTC calculation unit. The distance acquisition unit acquires a distance X between the own vehicle and an object. The relative velocity acquisition unit acquires a relative velocity V of the object with respect to the own vehicle. The relative acceleration acquisition unit acquires a relative acceleration β of the object with respect to the own vehicle. The estimated TTC calculation unit calculates an estimated TTC t until the own vehicle collides with the object. In this apparatus and method, the estimated TTC calculation unit calculates t, based on the distance X and the relative velocity V, when the own vehicle is accelerating, and when the own vehicle is decelerating, calculates t based on the distance X, the relative velocity V, and the relative acceleration β.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.