Sensor device and wiper controller
First Claim
1. A sensor device for detecting wetting on a windshield comprising:
- a light emission element for emitting a light;
a first light reception element for receiving the light in a first light path that includes reflective redirection by the windshield; and
a second light reception element for receiving the light in a second light path that does not include redirection by the windshield, wherein a ratio of the amount of the received light by the first light reception element and the amount of the received light by the second light reception element is used to determine the wetting on the windshield.
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Accused Products
Abstract
A sensor device for detecting wetting on a windshield includes a light emission element for emitting a light, a first light reception element for receiving the light in a first light path that includes reflective redirection by the windshield, and a second light reception element for receiving the light in a second light path that does not include reflective redirection by the windshield. The sensor device uses a ratio of the amount of the received light by the first light reception element and the amount of the received light by the second light reception element to determine wetting on the windshield.
18 Citations
18 Claims
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1. A sensor device for detecting wetting on a windshield comprising:
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a light emission element for emitting a light;
a first light reception element for receiving the light in a first light path that includes reflective redirection by the windshield; and
a second light reception element for receiving the light in a second light path that does not include redirection by the windshield, wherein a ratio of the amount of the received light by the first light reception element and the amount of the received light by the second light reception element is used to determine the wetting on the windshield. - View Dependent Claims (17)
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2. A sensor device for detecting a wetting on a windshield comprising:
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a light emission element; and
a first light reception element and a second light reception element for respectively receiving a light emitted by the light emission element, wherein the first light reception element receives a light path that includes redirection by the windshield, the second light reception element receives the light path that does not includes redirection by the windshield, and a first ratio of the amount of the emitted light from the light emission element against the amount of the received light by the first light reception element is compared with a second ratio of the amount of the emitted light from the light emission element against the amount of the received light by the second light reception element for determining wetting on the windshield. - View Dependent Claims (3, 4, 5, 6, 7)
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8. A sensor device for detecting a wetting on a windshield comprising:
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a light emitter; and
a reflective device for reflectively redirecting a light emitted from the light emitter;
a light receptor for receiving the light from the light emitter, wherein the reflective device redirects at least one light path from the light emitter via the windshield to the light receptor, the light receptor collects the light in at least two light paths from the light emitter via the windshield, and the amount of the light detected by the light receptor determines wetting on the windshield. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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18. A wiper controller for automatically controlling a wiper system comprising:
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a driving mechanism for actuating the wiper system; and
a sensor device for detecting wetting on a windshield, wherein the sensor device includes a light emission element for emitting a light, a first light reception element for receiving the light in a first light path that includes reflective redirection by the windshield, and a second light reception element for receiving the light in a second light path that does not include reflective redirection by the windshield, the sensor device determines a ratio of the amount of the received light by the first light reception element and the amount of the received light by the second light reception element.
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Specification