Smoke detector chamber architecture and related methods using two different wavelengths of light
First Claim
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1. A method for using multiple wavelengths of electromagnetic radiation to detect smoke by a smoke detector, the method comprising:
- while the smoke detector is set to a first mode;
emitting, by a first electromagnetic radiation emitter, a first wavelength of electromagnetic radiation into a smoke chamber while a second electromagnetic radiation emitter is disabled;
waiting, by the smoke detector, a first period of time following emitting the first wavelength of electromagnetic radiation into the smoke chamber with the first and second electromagnetic radiation emitters disabled; and
emitting, by the second electromagnetic radiation emitter, a second wavelength of electromagnetic radiation into the smoke chamber while the first electromagnetic radiation emitter is disabled following waiting the first period of time;
determining, by the smoke detector, at least partially based on a first amount of smoke detected within the smoke chamber, whether to set the smoke detector to a second mode; and
while the smoke detector is set to the second mode;
emitting, by the first electromagnetic radiation emitter, the first wavelength of electromagnetic radiation into the smoke chamber while the second electromagnetic radiation emitter is disabled;
waiting, by the smoke detector, a second period of time following emitting the first wavelength of electromagnetic radiation into the smoke chamber with the first and second electromagnetic radiation emitters disabled, wherein the second period of time is shorter in duration than the first period of time; and
emitting, by the second electromagnetic radiation emitter, the second wavelength of electromagnetic radiation into the smoke chamber while the first electromagnetic radiation emitter is disabled following waiting the second period of time.
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Abstract
Various arrangements for using multiple wavelengths of electromagnetic radiation to detect smoke by a smoke detector are present. Multiple modes of the smoke detector may be used in which a first wavelength of electromagnetic radiation is emitted into a smoke chamber while a second electromagnetic radiation emitter is disabled, a period of time is waited, and a second wavelength of electromagnetic radiation is emitted into the smoke chamber while the first emitter is disabled. Depending on the mode of the smoke detector, the period of wait time may be varied.
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Citations
19 Claims
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1. A method for using multiple wavelengths of electromagnetic radiation to detect smoke by a smoke detector, the method comprising:
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while the smoke detector is set to a first mode; emitting, by a first electromagnetic radiation emitter, a first wavelength of electromagnetic radiation into a smoke chamber while a second electromagnetic radiation emitter is disabled; waiting, by the smoke detector, a first period of time following emitting the first wavelength of electromagnetic radiation into the smoke chamber with the first and second electromagnetic radiation emitters disabled; and emitting, by the second electromagnetic radiation emitter, a second wavelength of electromagnetic radiation into the smoke chamber while the first electromagnetic radiation emitter is disabled following waiting the first period of time; determining, by the smoke detector, at least partially based on a first amount of smoke detected within the smoke chamber, whether to set the smoke detector to a second mode; and while the smoke detector is set to the second mode; emitting, by the first electromagnetic radiation emitter, the first wavelength of electromagnetic radiation into the smoke chamber while the second electromagnetic radiation emitter is disabled; waiting, by the smoke detector, a second period of time following emitting the first wavelength of electromagnetic radiation into the smoke chamber with the first and second electromagnetic radiation emitters disabled, wherein the second period of time is shorter in duration than the first period of time; and emitting, by the second electromagnetic radiation emitter, the second wavelength of electromagnetic radiation into the smoke chamber while the first electromagnetic radiation emitter is disabled following waiting the second period of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A smoke detector for using multiple wavelengths of electromagnetic radiation to detect smoke, the smoke detector comprising:
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a smoke chamber; an electromagnetic sensor positioned to receive electromagnetic radiation within the smoke chamber; and a first electromagnetic radiation emitter that emits electromagnetic radiation at a first wavelength into the smoke chamber; a second electromagnetic radiation emitter that emits electromagnetic radiation at a second wavelength into the smoke chamber; and a processing system that controls activation of the first electromagnetic radiation emitter and the second electromagnetic radiation emitter, the processing system; setting the smoke detector to a first mode, during which the processing system; causes the first electromagnetic radiation emitter to emit the first wavelength of electromagnetic radiation into the smoke chamber, during which the second electromagnetic radiation emitter is disabled; waits a first period of time following the first electromagnetic radiation emitter emitting the first wavelength of electromagnetic radiation into the smoke chamber, during the first period of time, neither the first electromagnetic radiation emitter nor the second electromagnetic radiation emitter are active; causes the second electromagnetic radiation emitter to emit the second wavelength of electromagnetic radiation into the smoke chamber following waiting the first period of time, during which the first electromagnetic radiation emitter is disabled; and setting the smoke detector to a second mode, during which the processing system; causes the first electromagnetic radiation emitter to emit the first wavelength of electromagnetic radiation into the smoke chamber while the second electromagnetic radiation emitter is disabled; waits a second period of time following emitting the first wavelength of electromagnetic radiation into the smoke chamber, wherein the second period of time is shorter than the first period of time and the first and second electromagnetic radiation emitters are disabled; and causes the second electromagnetic radiation emitter to emit the second wavelength of electromagnetic radiation into the smoke chamber following waiting the second period of time while the first electromagnetic radiation emitter is disabled. - View Dependent Claims (14, 15, 16, 17)
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18. An apparatus for using multiple wavelengths of electromagnetic radiation to detect smoke, the apparatus comprising:
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means for emitting a first wavelength of electromagnetic radiation into a smoke chamber while the apparatus is set to a first mode and while a means for emitting a second wavelength of electromagnetic radiation into the smoke chamber is disabled; means for waiting a first period of time following emitting the first wavelength of electromagnetic radiation into the smoke chamber while the apparatus is set to the first mode; and means for emitting the second wavelength of electromagnetic radiation into the smoke chamber while the apparatus is set to the first mode and while the means for emitting the first wavelength of electromagnetic radiation is disabled following waiting the first period of time; means for determining whether to set the apparatus to a second mode; means for emitting the first wavelength of electromagnetic radiation into the smoke chamber while the apparatus is set to the second mode and while the means for emitting the second wavelength of electromagnetic radiation is disabled; means for waiting a second period of time following emitting the first wavelength of electromagnetic radiation while the apparatus is set to the second mode and, wherein the second period of time is shorter in duration than the first period of time; and means for emitting the second wavelength of electromagnetic radiation into the smoke chamber while the apparatus is set to the second mode and while the means for emitting the first wavelength of electromagnetic radiation emitter is disabled following waiting the second period of time. - View Dependent Claims (19)
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Specification