Arrangement for operating a windshield wiper
First Claim
1. An improved arrangement for operating a windshield wiper, the arrangement having sensor means (10) for detecting the degree of moisture on a windshield and generating a sensor signal (S) in response thereto, evaluation means (20) for evaluating the sensor signal (S) to generate a control signal (ST), and actuation means (30) for selectively actuating the windshield wiper in response to the control signal (ST) to produce wiping actions, wherein the improvement comprises:
- the evaluation means (20) includes recognition means (23) for recognizing the presence of drying moisture on the windshield from a rising level of the measured values (MW) in a time sequence of measured values (MW) derived from the sensor signal (S), wiping being suppressed by the evaluation means (20) if drying moisture is detected.
1 Assignment
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Accused Products
Abstract
The invention relates to an arrangement for the automatic operation of a windshield wiper, having a sensor device for detecting the degree of moisture on a windshield, an evaluation device, and an actuation unit for the windshield wiper which is actuated by the evaluation device. The degree of moisture on the windshield can be analyzed better in that the evaluation device in has a recognition stage for recognizing drying moisture that is present on the windshield. By means of this recognition stage, whether the level of the measured values is rising as a result of the drying process can be determined from a time sequence of measured values derived from the sensor signal. In this manner, unnecessary wiping actions can be prevented.
8 Citations
6 Claims
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1. An improved arrangement for operating a windshield wiper, the arrangement having sensor means (10) for detecting the degree of moisture on a windshield and generating a sensor signal (S) in response thereto, evaluation means (20) for evaluating the sensor signal (S) to generate a control signal (ST), and actuation means (30) for selectively actuating the windshield wiper in response to the control signal (ST) to produce wiping actions, wherein the improvement comprises:
the evaluation means (20) includes recognition means (23) for recognizing the presence of drying moisture on the windshield from a rising level of the measured values (MW) in a time sequence of measured values (MW) derived from the sensor signal (S), wiping being suppressed by the evaluation means (20) if drying moisture is detected. - View Dependent Claims (2, 3, 4, 5, 6)
Specification