Vehicle lamp controller, vehicle lamp system, and vehicle lamp control method

摘要

A vehicle lamp controller, a vehicle lamp system having the vehicle controller, and a vehicle lamp control method are provided. The vehicle lamp controller includes a receiver configured to receive information on a detected vector from an output of an acceleration sensor, a memory in which a plurality of reference vectors are stored, the reference vectors corresponding to different pitch angles of a vehicle, a control unit configured to obtain a pitch angle of the vehicle from the detected vector and one of the reference vectors that has a smallest angle with respect to the detected vector, and to generate a control signal for adjusting an optical axis of a vehicle lamp based on the obtained pitch angle, and a transmitter configured to transmit the control signal to an optical axis adjustment portion of the vehicle lamp.

主权项

1. A vehicle lamp controller comprising:
a receiver configured to receive information on a detected vector from an output of an acceleration sensor; a memory in which a plurality of reference vectors are stored, wherein the plurality of reference vectors corresponds to different pitch angles of a vehicle; and wherein at least one of the plurality of reference vectors is an orientation in three-dimensional space which corresponds to a pitch angle of the vehicle inclined with respect to a horizontal reference state of the vehicle, the at least one of the plurality of reference vectors including numerical values of respective axis components of a gravity acceleration vector in three axis directions; a control unit configured to obtain a determined pitch angle of the vehicle from the detected vector and one of the reference vectors, and to generate a control signal for adjusting an optical axis of a vehicle lamp based on the determined pitch angle of the vehicle; and a transmitter configured to transmit the control signal to an optical axis adjustment portion of the vehicle lamp; wherein the control unit is configured to
calculate a difference angle between the detected vector and each of the reference vectors,select the one of the reference vectors having a smallest angle of the difference angles,derive, as the determined pitch angle of the vehicle, a sum of the smallest angle and a pitch angle of the vehicle corresponding to the selected reference vector.