Device for detecting objects on a windscreen of a motor vehicle
First Claim
1. A device for detecting objects on a windshield of a motor vehicle having a hood, the device comprising:
- a first imaging unit having a first lens and a first sensor positioned within the interior of the motor vehicle and away from the windshield, wherein the first lens images a first windshield section associated with a primary field of vision onto the first sensor, wherein the first sensor generates a first sensor signal in response to the first windshield section imaged thereon, wherein the first lens and the first sensor of the first imaging unit are positioned in a viewing direction pointing diagonally downwards with respect to the windshield such that the background of the first windshield section imaged onto the first sensor is the hood of the motor vehicle thereby causing the background of the first windshield section imaged onto the first sensor to be approximately constant in order to cancel environmental conditions that can impair object detection on the first windshield section; and
an evaluation unit for evaluating the first sensor signal to detect objects on the first windshield section.
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Accused Products
Abstract
A device for detecting objects on a windshield of a motor vehicle having a hood includes an imaging unit having a lens and a sensor positioned within the interior of the motor vehicle. The lens images a windshield section associated with a primary field of vision onto the sensor. The sensor generates a sensor signal in response to the windshield section imaged thereon. The imaging unit is positioned in a viewing direction pointing diagonally downwards with respect to the windshield such that the background of the windshield section imaged onto the sensor is the hood of the motor vehicle thereby causing the background of the windshield section imaged onto the sensor to be approximately constant in order to cancel environmental conditions that can impair object detection on the windshield section. An evaluation unit evaluates the sensor signal to detect objects on the windshield section.
62 Citations
18 Claims
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1. A device for detecting objects on a windshield of a motor vehicle having a hood, the device comprising:
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a first imaging unit having a first lens and a first sensor positioned within the interior of the motor vehicle and away from the windshield, wherein the first lens images a first windshield section associated with a primary field of vision onto the first sensor, wherein the first sensor generates a first sensor signal in response to the first windshield section imaged thereon, wherein the first lens and the first sensor of the first imaging unit are positioned in a viewing direction pointing diagonally downwards with respect to the windshield such that the background of the first windshield section imaged onto the first sensor is the hood of the motor vehicle thereby causing the background of the first windshield section imaged onto the first sensor to be approximately constant in order to cancel environmental conditions that can impair object detection on the first windshield section; and
an evaluation unit for evaluating the first sensor signal to detect objects on the first windshield section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A device for detecting objects on a windshield of a motor vehicle, the device comprising:
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a first imaging unit having a first lens and a first sensor positioned within the interior of the motor vehicle and away from the windshield, wherein the first lens images a first windshield section associated with a primary field of vision onto the first sensor, wherein the first imaging unit is tilted in a transversely downward directed viewing direction relative to the windshield, wherein the first sensor generates a first sensor signal in response to the first windshield section imaged thereon; and
a reference imaging unit positioned within the interior of the motor vehicle and away from the windshield, wherein the reference imaging unit images a reference windshield section associated with a secondary field of vision and generates a reference sensor signal indicative of the imaged reference windshield section, wherein the first and reference windshield sections are different from one another;
an evaluation unit for evaluating the first sensor signal to detect objects on the first windshield section, wherein the evaluation unit uses the reference sensor signal as a reference for evaluating the first sensor signal in order to detect objects on the first windshield section. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A device for detecting objects on a windshield of a motor vehicle, the device comprising:
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a first imaging unit having a first lens and a first sensor positioned within the interior of the motor vehicle and away from the windshield, wherein the first lens images a first windshield section associated with a primary field of vision of a vehicle driver onto the first sensor, wherein the first lens and the first sensor of the first imaging unit are tilted in a transversely downward directed viewing direction relative to the windshield, wherein the first sensor generates a first sensor signal in response to the first windshield section imaged thereon;
a second imaging unit having a second lens and a second sensor positioned within the interior of the motor vehicle and away from the windshield, wherein the second lens images a second windshield section associated with a primary field of vision of a vehicle passenger onto the second sensor, wherein the first and second windshield sections are mutually exclusive from one another, wherein the second lens and the second sensor of the second imaging unit are tilted in a transversely downward directed viewing direction relative to the windshield, wherein the second sensor generates a second sensor signal in response to the second windshield section imaged thereon; and
an evaluation unit for evaluating the first and second sensor signals to detect objects on the first and second windshield sections. - View Dependent Claims (18)
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Specification