Smoke Detector Chamber Architecture and Related Methods Using Two Different Wavelengths of Light

摘要

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.

主权项

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; andemitting, 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; andemitting, 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.