SENSOR FOR DETECTING DIRT AND/OR RAIN AND METHOD FOR OPERATING A SENSOR
First Claim
1. A sensor for detecting dirt and/or rain having at least one transmitter unit (12, 112) and at least one receiver unit (16, 116) as well as a test surface (22, 122), an accumulation (30, 32) on the test surface (22, 122) being detectable by a light beam (24, 26;
- 124, 126), which is emitted by the transmitter unit (12, 112) and absorbed by the receiver unit (16, 116), characterized in thatthe transmitter unit (12, 112) includes a plurality of transmitters (14, 114), said plurality of transmitters including a plurality of transmission sources (114a, 114b, 114c, 114d) disposed adjacent each other,said receiver unit (16, 116) including a receiver (18, 118) associated with each of said plurality of transmitters (14, 114),wherein one of said plurality of transmitters (14, 114) emits at least two different wavelengths, which are detectable by its associated receiver (18, 118).
1 Assignment
0 Petitions
Accused Products
Abstract
A sensor detects dirt and/or rain having a transmitter unit (12, 112) and at least one receiver unit (16, 116) as well as a test surface (22, 122), an accumulation (30, 32) on the test surface (22, 122) being detectable by a light beam (24, 26; 124, 126), which is emitted by the transmitter unit (12, 112) and absorbed by the receiver unit (16, 116). The transmitter unit (12, 112) has at least two transmitters (114), at least one of which comprises two or more locally closely adjacent transmission sources (114a, 114b, 114c, 114d), one receiver (18, 118) of the receiver unit (16, 116) being associated with each transmitter (114). The receiver (18, 118) have one or more individual receivers, at least one of the transmitters (114) being implemented for the purpose of emitting at least two different wavelengths, which are detectable by the associated receiver (18, 118).
15 Citations
21 Claims
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1. A sensor for detecting dirt and/or rain having at least one transmitter unit (12, 112) and at least one receiver unit (16, 116) as well as a test surface (22, 122), an accumulation (30, 32) on the test surface (22, 122) being detectable by a light beam (24, 26;
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124, 126), which is emitted by the transmitter unit (12, 112) and absorbed by the receiver unit (16, 116), characterized in that
the transmitter unit (12, 112) includes a plurality of transmitters (14, 114), said plurality of transmitters including a plurality of transmission sources (114a, 114b, 114c, 114d) disposed adjacent each other, said receiver unit (16, 116) including a receiver (18, 118) associated with each of said plurality of transmitters (14, 114), wherein one of said plurality of transmitters (14, 114) emits at least two different wavelengths, which are detectable by its associated receiver (18, 118). - View Dependent Claims (2, 3, 14, 15, 16, 17, 18, 19, 20, 21)
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124, 126), which is emitted by the transmitter unit (12, 112) and absorbed by the receiver unit (16, 116), characterized in that
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4. A sensor for detecting dirt and/or rain having at least one transmitter unit (12, 112) and at least one receiver unit (16, 116) as well as a test surface (22, 122), an accumulation (30, 32) on the test surface (22, 122) being detectable by a light beam (24, 26;
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124, 126), which is emitted by the transmitter unit (12, 112) and absorbed by the receiver unit (16, 116), characterized in that
the transmitter unit (12, 112) has at least two transmitters (14, 114), at least one of which comprises two or more locally closely adjacent transmission sources (114a, 114b, 114c, 114d), a receiver (18, 118) of the receiver unit (16, 116) is associated with each transmitter (14, 114), and the receiver (18, 118) has one or more individual receivers. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13)
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124, 126), which is emitted by the transmitter unit (12, 112) and absorbed by the receiver unit (16, 116), characterized in that
Specification