| Title |
Analysis of Optical Properties of Fire Smoke and Non-fire Smoke for Reduction of Nuisance Alarm |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2014.28.10.049 |
| Keywords |
Photoelectric Smoke Detector ; Extinction ; Scattering ; Smoke Particles ; Optical Characteristics of Smoke |
| Abstract |
This paper is basic study for development of an advanced photoelectric type smoke detector that has high reliability by reducing the occurrence of nuisance alarms. This paper was attempted to distinguish optical characteristics of the typical fire smoke particle and non-fire smoke particle. According to UL 268 standards, three types of test fires (the paper, the wood and the flammable liquid) were used in this paper for measurement of the fire smoke particles, and the water vapor and the cigarette smoke that were known as the main cause of the nuisance alarms were also used for the non-fire smoke particles. A smoke detection chamber was created, which was equipped with one light source and several light sensors for enabling simultaneous detection of light extinction and scattering, respectively. This paper analyzes the optical characteristics of each smoke particle using this chamber. |