Distance measuring equipment for a car
First Claim
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1. Distance measuring equipment for a car having a non-reflecting protective glass with a wiper outside the car comprising:
- first means provided inside the car for optically measuring a distance between the car and one of obstacles forward or backward of the car;
second means for optically detecting a condition where the non-reflecting protective glass reflects light and for providing an output;
third means for driving the wiper in response to the output of said second means upon the detection of the reflection conditionfourth means for detecting a driving angle of said third means; and
fifth means for interrupting the operation of said first means only when the driving angle of said third means resides within a range of a predetermined measuring angle of said first means.
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Accused Products
Abstract
Distance measuring equipment for a car arranged such that a wiper is driven only when a light reflection condition of a non-reflecting protective glass is detected with the light input/output to the glass. Additionally, it can be arranged such that the measuring operation is interrupted only when a driving angle of the wiper resides in a predetermined measuring angle range on the protective glass.
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Citations
5 Claims
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1. Distance measuring equipment for a car having a non-reflecting protective glass with a wiper outside the car comprising:
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first means provided inside the car for optically measuring a distance between the car and one of obstacles forward or backward of the car; second means for optically detecting a condition where the non-reflecting protective glass reflects light and for providing an output; third means for driving the wiper in response to the output of said second means upon the detection of the reflection condition fourth means for detecting a driving angle of said third means; and fifth means for interrupting the operation of said first means only when the driving angle of said third means resides within a range of a predetermined measuring angle of said first means. - View Dependent Claims (2)
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3. Distance measuring equipment for a vehicle having a window and a wiper for wiping the window, comprising:
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first means, postioned inside the vehicle, for optically measuring a distance between the vehicle and an obstacle, through the window; second means for determining a position of the wiper with respect to the window when the wiper is moving; and third means for interrupting the operation of said first means based on the position of the wiper determined by said second means.
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4. A distance measuring method for use in a vehicle having a window and a wiper for wiping the window, comprising steps of:
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(a) operating optical measuring equipment to measure a distance between the vehicle and an obstacle; (b) driving the wiper; (c) determining a position of the wiper on the window; and (d) interrupting the operation of the optical measuring equipment based on the determined position of the wiper.
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5. Distance measuring equipment for a vehicle having a window with a wiper for wiping the window, comprising:
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optical measurement apparatus to measure a distance between the vehicle and an obstacle outside the vehicle; a sensor to detect a position of the wiper with respect to the window when the wiper is moving and generate an output signal; and a trigger circuit, coupled to said optical measurement apparatus and said sensor, to disable the operation of said optical measurement apparatus based on the output signal of said sensor.
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Specification