Use of optical reflectance proximity detector for nuisance mitigation in smoke alarms
First Claim
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1. A smoke alarm, comprising:
- smoke detection circuitry configured to detect smoke and, in response to smoke, generate a smoke detection signal;
proximity detection circuitry configured to generate a proximity detection signal when the proximity detection circuitry detects a movement of an object within a distance of the smoke alarm; and
test circuitry configured to perform a test of a component of the smoke alarm, wherein performance of the test is at least partially based on at least two proximity detection signals being detected within a predetermined period of time while the smoke detection signal is not being generated.
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Abstract
A smoke alarm comprises smoke detection circuitry for detecting smoke and generating a detection signal responsive thereto. Proximity detection circuitry generates a proximity detection signal responsive to detection of an object within in a selected distance of the smoke alarm. Alarm generation circuitry generates an audible alarm responsive to the detection signal. The audible alarm may be deactivated for a predetermined period of time responsive to at least one proximity detection signal.
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Citations
20 Claims
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1. A smoke alarm, comprising:
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smoke detection circuitry configured to detect smoke and, in response to smoke, generate a smoke detection signal; proximity detection circuitry configured to generate a proximity detection signal when the proximity detection circuitry detects a movement of an object within a distance of the smoke alarm; and test circuitry configured to perform a test of a component of the smoke alarm, wherein performance of the test is at least partially based on at least two proximity detection signals being detected within a predetermined period of time while the smoke detection signal is not being generated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for operating a smoke alarm, the method comprising:
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detecting a proximity activation caused by movement of an object within a distance of the smoke alarm; determining that a smoke detection signal is not currently being generated; and in response to determining that the smoke detection signal is not currently being generated and in response to detecting movement of the object within the distance of the smoke alarm, performing a test of a component of the smoke alarm. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A smoke detection apparatus, the apparatus comprising:
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means for detecting smoke; means for detecting a proximity activation caused by movement of an object within a distance of the smoke detection apparatus; means for determining that a smoke detection signal is not currently being generated; and means for performing a test of the smoke detection apparatus in response to determining that the smoke detection signal is not currently being generated and in response to detecting movement of the object within the distance of the smoke detection apparatus. - View Dependent Claims (18, 19, 20)
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Specification