Rain sensor having frost sensing function
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorsJin Sang Lee, Yong Pyo Hong, Nam Joon Yoo, Jong Min Park
Life of this patent
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Abstract
A rain sensor has a frost sensing function, and is attached to a windshield glass of a vehicle. The frost sensor includes a casing provided with a frost sensing region formed by recessing a part of the casing to contact indoor air; a light emitting unit that emits light such that the light is incident on the windshield glass; a light receiving unit that receives the light emitted from the light emitting unit and reflected from the windshield glass and the frost sensing region; and a control unit that outputs the light received by the light receiving unit as a control signal and activates a wiper and an air conditioner of the vehicle.
Claims7
A rain sensor having a frost sensing function, the rain sensor being attached to a windshield glass of a vehicle, comprising:
- a casing provided with a frost sensing region formed by recessing a part of a surface of the casing which is attached to the windshield glass to contact indoor air of the vehicle;
- a light emitting unit configured to emit light such that the light is totally reflected from an exterior side surface of the windshield glass and the frost sensing region;
- a light receiving unit that receives the light reflected totally and outputs signals;
- and
- a control unit that receives the signals from the light receiving unit and analyzes a condition of raindrops on the exterior side surface of the glass and a condition of frost generated on an interior side surface of the windshield glass.
Dependencies are inferred from the claim text.