Control for an automatic plumbing device
First Claim
1. An automatic plumbing device, comprising:
- a plumbing body;
a first emitter oriented to yield emissions in a first region of sensitivity including an inner boundary and an outer boundary diverging from the inner boundary;
a second emitter oriented to yield emissions in a second region of sensitivity that intersects the first region of sensitivity, the second region including an inner boundary and an outer boundary diverging from the inner boundary, wherein the first region of sensitivity and the second region of sensitivity overlap to form a sensitivity volume, and wherein a starting point of the sensitivity volume is defined by the intersection of the inner boundary of the first region of sensitivity and the inner boundary of the second region of sensitivity, and an end point of the sensitivity volume is defined by the intersection of the outer boundary of the first region of sensitivity and the outer boundary of the second region of sensitivity, and the first region of sensitivity and the second region of sensitivity diverge at the end point where the sensitivity volume ends;
a receiver adapted to receive emitted returns from said first region of sensitivity and said second region of sensitivity and to detect an object in the sensitivity volume by comparing the emitted returns to a threshold value; and
a controller in communication with said receiver and said first emitter and said second emitter, said controller operable to open a valve in response to an object detected in the sensitivity volume, and to close the valve in response to a timer or in response to no object being detected in the sensitivity volume.
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0 Petitions
Accused Products
Abstract
A plumbing device uses electronic control circuitry with two infrared emitters and one infrared receiver to detect objects in a particular region of space. In one embodiment, detection of an object using both sensors (in sequential scans) results in the plumbing device turning on. When no object has been detected for a certain amount of time, the plumbing device is turned off. Also, when the plumbing device has run for another certain amount of time, the plumbing device is turned off regardless of whether an object is still being detected. In another embodiment, the output of the IR emitters is partially blocked by one or more mask elements to tailor the region that is covered by both IR emitters and, hence, the region that triggers the opening of the plumbing device valve.
36 Citations
20 Claims
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1. An automatic plumbing device, comprising:
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a plumbing body; a first emitter oriented to yield emissions in a first region of sensitivity including an inner boundary and an outer boundary diverging from the inner boundary; a second emitter oriented to yield emissions in a second region of sensitivity that intersects the first region of sensitivity, the second region including an inner boundary and an outer boundary diverging from the inner boundary, wherein the first region of sensitivity and the second region of sensitivity overlap to form a sensitivity volume, and wherein a starting point of the sensitivity volume is defined by the intersection of the inner boundary of the first region of sensitivity and the inner boundary of the second region of sensitivity, and an end point of the sensitivity volume is defined by the intersection of the outer boundary of the first region of sensitivity and the outer boundary of the second region of sensitivity, and the first region of sensitivity and the second region of sensitivity diverge at the end point where the sensitivity volume ends; a receiver adapted to receive emitted returns from said first region of sensitivity and said second region of sensitivity and to detect an object in the sensitivity volume by comparing the emitted returns to a threshold value; and a controller in communication with said receiver and said first emitter and said second emitter, said controller operable to open a valve in response to an object detected in the sensitivity volume, and to close the valve in response to a timer or in response to no object being detected in the sensitivity volume. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An automatic plumbing device, comprising:
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a plumbing body having a valve; a first emitter oriented to yield emissions in a first region of sensitivity including an inner boundary and an outer boundary diverging from the inner boundary; a second emitter oriented to yield emissions that form a second region of sensitivity, the second region including an inner boundary and an outer boundary diverging from the inner boundary, wherein a portion of the first region of sensitivity and a portion of the second region of sensitivity overlap to form a defined sensitivity volume and wherein a starting point of the sensitivity volume is defined by the intersection of the inner boundary of the first region of sensitivity and the inner boundary of the second region of sensitivity, and an end point of the sensitivity volume is defined by the intersection of the outer boundary of the first region of sensitivity and the outer boundary of the second region of sensitivity, and the first region of sensitivity and the second region of sensitivity diverge at the end point where the sensitivity volume ends; a receiver adapted to receive emitted returns from said first region of sensitivity and said second region of sensitivity and to detect an object in the sensitivity volume by comparing the emitted returns to a threshold value; and a controller in communication with said receiver and said first emitter and said second emitter, said controller operable to open the valve in response to an object detected in the sensitivity volume, and operable to close the valve in response to no object being detected in the sensitivity volume. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification