光声火灾探测系统新模型(英文)

被引:5
作者
苏国锋
陈涛
袁宏永
机构
[1] 中国科技大学火灾科学国家重点实验室,清华大学公共安全研究中心,清华大学公共安全研究中心合肥,北京,北京
关键词
火灾探测; 光声; 气体探测;
D O I
暂无
中图分类号
X928.7 [火灾与爆炸事故];
学科分类号
0838 ;
摘要
普通光声气体探测模型因其实时性能差及波段要求高而不适用于火灾报警系统。本文介绍一种基于光声原理的CO在线测量的火灾报警模型。光声腔中采用纯CO气体代替气体采样,通过红外光源与光声腔之间的吸收路径测量火灾气体。一旦火灾气体经过该路径,将在不同吸收线上导致到达光声腔辐射量的减小。因此,只有与光声腔中气体一致的成分才能减弱初始光声信号,而信号变化代表了CO的存在。
引用
收藏
页码:219 / 223+268 +268
页数:6
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