Control device for vehicle lamp, vehicle lamp system, and control method for vehicle lamp
AssigneeKoito Manufacturing Co., Ltd.
InventorsMasaaki Ishikawa, Kenta Ishigami, Atsushi Ogawa, Naoki Osada
Life of this patent
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Abstract
A control device for a vehicle lamp controls an adjustment of an optical axis angle of a vehicle lamp provided with a vibration generating source that vibrates at a first frequency, and the control device includes an acceleration sensor provided in the vehicle lamp and configured to sample an acceleration at a second frequency that is a non-integral multiple of the first frequency, a receiving unit that receives a signal indicating an output value from the acceleration sensor, and a controlling unit that executes control of adjusting the optical axis angle of the vehicle lamp on the basis of the output value from the acceleration sensor.
Claims8
A control device for a vehicle lamp, the control device comprising:
- a receiving unit that receives a signal indicating an output value from a tilt sensor enabled for deriving an angle of inclination of a vehicle relative to a horizontal plane;
- a controlling unit that outputs an adjustment signal instructing that an optical axis angle of the vehicle lamp be adjusted with respect to a change in the angle of inclination observed while the vehicle is at rest and either refrains from generating or outputting the adjustment signal or outputs a maintaining signal instructing that the optical axis angle be maintained with respect to a change in the angle of inclination observed while the vehicle is traveling;
- and
- a movement determining unit that determines whether the vehicle has moved while an ignition switch is in an off state, wherein
- the controlling unit outputs the adjustment signal with respect to a change in the angle of inclination observed while the ignition switch is in an off state if the movement determining unit has determined that the vehicle has not moved and either refrains from generating or outputting the adjustment signal or outputs the maintaining signal with respect to a change in the angle of inclination observed while the ignition switch is in an off state if the movement determining unit has determined that the vehicle has moved.
Dependencies are inferred from the claim text.