Title:
HEADLAMP OPTICAL AXIS CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/031255
Kind Code:
A1
Abstract:
A first tilt angle calculation unit (11) uses the acceleration detected by an acceleration sensor (1) to calculate a tilt angle (θg) of a vehicle relative to a road surface. A second tilt angle calculation unit (12) uses the angular speed detected by an angular speed sensor (2) to calculate a tilt angle (θω) of the vehicle relative to the road surface. A tilt angle selection unit (14) selects the tilt angle (θg) calculated by the first tilt angle calculation unit (11) when a vehicle state determination unit (13) has determined that the vehicle is stopped or traveling with constant speed, and selects the tilt angle (θω) calculated by the second tilt angle calculation unit (12) when the vehicle state determination unit (13) has determined that the vehicle is traveling but not with constant speed. A signal generation unit (15) uses the tilt angle selected by the tilt angle selection unit (14) to generate an optical axis control signal for controlling the optical axis of a headlamp.
Inventors:
FUKUNAGA TAKAO (JP)
KAWAHARA DAIKI (JP)
KAWAHARA DAIKI (JP)
Application Number:
PCT/JP2018/029575
Publication Date:
February 13, 2020
Filing Date:
August 07, 2018
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
B60Q1/10
Domestic Patent References:
| WO2016189707A1 | 2016-12-01 |
Foreign References:
| JP2009126268A | 2009-06-11 | |||
| JP2013244763A | 2013-12-09 | |||
| JPH09189548A | 1997-07-22 |
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
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