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전압변동에 따른 비상경보설비의 음향특성에 관한 실험적 연구
백은선(Baek Eun-Sun),백건종(Baek Geon-Jong),신훈(Shin Hoon),장길수(Jang Gil-Soo) 한국건축친환경설비학회 2009 한국건축친환경설비학회 논문집 Vol.3 No.1
In this study, voltage variation effects on sound level of fire alarm system were examine in the anechoic room and free field condition. Followings are results. Within the voltage band of ±20% from 24V(center) which is standard voltage, the sound pressure level is considered to be stable but in the condition of -20% below standard voltage, adequate sound pressure level is not assured. Acoustic equipment which is far from receiver can not fulfill standard sound pressure level output due to voltage dropping and this could cause a problem that fire alarm could not be heard to inhabitants.
전압강하에 따른 화재비상경보 설비음의 변동특성에 관한 실험적 연구
백건종(Baek Geon-Jong),신훈(Shin Hoon),장길수(Jang Gil-Soo),백은선(Baek Eun-Sun),송민정(Song Min-Jeong) 한국건축친환경설비학회 2009 한국건축친환경설비학회 학술발표대회 논문집 Vol.- No.-
In this study, voltage variation effects on sound level of fire alarm system were examined. Followings are results. Within the voltage band of ±20% from 24V(center) which is standard voltage, the sound pressure level is considered to be stable but in the condition of -20% below voltage dropping, adequate sound pressure level output is not anticipated. Acoustic equipment which is far from receiver can not fulfill standard sound pressure level output due to voltage dropping and this could cause a problem that fire alarm could not be heard to inhabitants.