Title: New design and improved performance for smoke detector
Abstract:Most of the photoelectric smoke detectors use a single LED that emits at a single narrow wavelength band to illuminate the smoke chamber. Consequently, a single light detector is arranged so that ligh...Most of the photoelectric smoke detectors use a single LED that emits at a single narrow wavelength band to illuminate the smoke chamber. Consequently, a single light detector is arranged so that light from the LED is detected only when it is scattered out of its direct path due to the presence of smoke or some other aerosol. Due to the use of a single wavelength band, a system cannot very well practically distinguish between smoke due to an unwanted fire and aerosols generated by harmless activities such as cooking and bathing. Also is unable to distinguish between light scattered from smoke (or aerosol) and light originating from the external environment. A "labyrinth" exclude ambient light but slows the admittance of air and smoke into the smoke chamber, thus increasing the time needed for the smoke detector to react to some types of fires.Read More
Publication Year: 2018
Publication Date: 2018-06-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 4
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