Control device for vehicular lamp and vehicle lighting system
US10286833B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2018 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | May 17, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q2300/114
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
To provide a technique capable of accurately obtaining the attitude of a vehicle in the pitch direction. A device controls the optical axis of a vehicular lamp in accordance with an attitude change in pitch direction of the vehicle having (a) an angle calculation part which obtains a first acceleration value, a second acceleration value, and a vehicle speed, at each predetermined time intervals respectively, calculates vehicle traveling direction acceleration based on the vehicle speed, further obtains a first slope and a second slope from the correlation between the vehicle traveling direction acceleration and the first and the second acceleration value respectively, and a vehicle attitude angle based on the ratio between the two slopes, and (b) an optical axis setting part which generates a control signal for controlling the optical axis of the lamp based on the vehicle attitude angle, and provides the control signal to the lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.