Road surface condition estimation apparatus
US10866161B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 18, 2018 |
| Grant date | Dec 15, 2020 |
| Priority date | — |
| Expiry date | Jun 19, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W40/068
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A road surface condition estimation apparatus may output a detection signal corresponding to a magnitude of a vibration of a tire. The road surface condition estimation apparatus may calculate a level of high frequency component of the detection signal in a contact section. The road surface condition estimation apparatus may transmit a calculation result of the level of high frequency component as road surface condition data each time the tire rotates for a predetermined number of times. The road surface condition estimation apparatus may estimate a condition of road surface based on the road surface condition data. The road surface condition estimation apparatus may stop transmitting the road surface condition data when estimating that the vehicle accelerates or decelerates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.