Lamp system for vehicle
AssigneeHyundai Mobis Co., Ltd.
InventorMyeong Je Kim
Life of this patent
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Abstract
A lamp system for a vehicle includes a sensor unit including at least one of a camera sensor or a distance detection sensor, the system including: a light source unit including at least one lens and at least one light source; a piezoelectric element positioned on a surface of the lens and generating a vibration based on an electrical acoustic signal; and a control unit controlling the piezoelectric element, wherein the control unit controls the piezoelectric element by varying the electrical acoustic signal based on sensing information received from the sensor unit.
Claims8
A lamp system for a vehicle having a sensor unit that includes at least one of a camera sensor or a distance detection sensor, the lamp system comprising:
- a light source unit comprising at least one lens and at least one light source;
- a piezoelectric element positioned on a surface of the lens for generating a vibration based on an electrical acoustic signal;
- and
- a control unit programmed for controlling the piezoelectric element by varying the electrical acoustic signal based on sensing information received from the sensor unit;
- wherein the control unit is programmed to:
- determine a size of a foreign material on the lens based on a distribution area of the foreign material when determining that the foreign material exists on the lens based on the sensing information received from a sensor unit, and
- vary a frequency of the electrical acoustic signal based on the determined size of the foreign material.
A lamp system for a vehicle having a sensor unit that includes at least one of a camera sensor or a distance detection sensor, the lamp system comprising:
- a light source unit comprising at least one lens and at least one light source;
- a piezoelectric element positioned on a surface of the lens for generating a vibration based on an electrical acoustic signal;
- a control unit programmed for controlling the piezoelectric element by varying the electrical acoustic signal based on sensing information received from the sensor unit;
- and
- a temperature detection sensor measuring a temperature of the piezoelectric element,
- wherein the control unit varies a frequency of the electrical acoustic signal based on the measured temperature.
A lamp system for a vehicle having a sensor unit that includes at least one of a camera sensor or a distance detection sensor, the lamp system comprising:
- a light source unit comprising at least one lens and at least one light source;
- a piezoelectric element positioned on a surface of the lens for generating a vibration based on an electrical acoustic signal;
- and
- a control unit programmed for controlling the piezoelectric element by varying the electrical acoustic signal based on sensing information received from the sensor unit;
- wherein the control unit is programmed to:
- generate the electrical acoustic signal by multiplying a carrier wave by a sound source data signal,
- fix and modulate a frequency of the carrier wave when the sound source data signal has a fixed frequency, and
- vary and modulate the frequency of the carrier wave when the sound source data signal has a variable frequency.
Dependencies are inferred from the claim text.