Wiper movement detecting device
First Claim
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1. A wiper movement detecting device comprising:
- an optical sensor that is installed to face a glass surface in a vehicle and detect illuminance in an area of the glass surface where the wiper that reciprocates along the glass surface passes through; and
a movement detector configured to detect a reduction time in which the illuminance detected by the optical sensor temporarily reduces due to the passing of the wiper and determine a movement of the wiper from an interval cycle based upon an interval between the reduction times,wherein the movement detector determines that the wiper is moving in a case where a difference between the interval cycle and a reference movement cycle is equal to or less than a threshold.
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Abstract
PROBLEM
To detect a movement of a wiper by the configuration simplified and reduced in costs.
SOLUTION TO PROBLEM
A wiper movement detecting device may include an optical sensor that may be installed to face a glass surface in a vehicle and detect illuminance in an area of the glass surface where the wiper that reciprocates along the glass surface passes through. The detecting device may also include a movement detecting unit configured to detect a reduction time in which the illuminance detected by the optical sensor may temporarily reduce due to the passing of the wiper and determine a movement of the wiper from an interval cycle based upon an interval between the reduction times.
5 Citations
20 Claims
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1. A wiper movement detecting device comprising:
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an optical sensor that is installed to face a glass surface in a vehicle and detect illuminance in an area of the glass surface where the wiper that reciprocates along the glass surface passes through; and a movement detector configured to detect a reduction time in which the illuminance detected by the optical sensor temporarily reduces due to the passing of the wiper and determine a movement of the wiper from an interval cycle based upon an interval between the reduction times, wherein the movement detector determines that the wiper is moving in a case where a difference between the interval cycle and a reference movement cycle is equal to or less than a threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A wiper movement detecting device comprising:
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an optical sensor that is installed to face a glass surface in a vehicle and detect illuminance in an area of the glass surface where the wiper that reciprocates along the glass surface passes through; a movement detector configured to detect a reduction time in which the illuminance detected by the optical sensor temporarily reduces due to the passing of the wiper and determine a movement of the wiper from an interval cycle based upon an interval between the reduction times; and a warning indicator configured to communicate abnormality of the wiper in a case where the movement of the wiper is not determined by the movement detector, and in a case where the movement of the wiper is determined by the movement detector after a movement stop notice of the wiper is input from a controller that controls the movement of the wiper, wherein the movement detector determines that the wiper is moving in a case where a difference between the interval cycle and a reference movement cycle is equal to or less than a threshold.
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Specification