CO和CO_2气体红外光谱技术在火灾早期探测中的应用研究  

Research on Early Fire Detection with CO-CO_2 FTIR-Spectroscopy

作　　者：杜建华[1] 张认成[1] 黄湘莹[1] 龚雪[1] 张晓华[1] 

机构地区：[1]华侨大学机电及自动化学院,福建泉州362011

出　　处：《光谱学与光谱分析》2007年第5期899-903,共5页Spectroscopy and Spectral Analysis

基　　金：福建省自然科学基金项目(D020015;2006J0138);华侨大学校基金项目(06HZR09)资助

摘　　要：通过对现有各种火灾探测方法进行归纳分析,提出以CO和CO2作为探测特征参量的傅里叶红外光谱技术早期火灾探测新方法,并在此基础上建立了完善的早期火灾实验系统。通过大量真假火灾实验得出常见材料在火灾发生过程中产生气体浓度的变化特征真实火灾产生出大量的CO和CO2,浓度变化非常有规律;假火灾只产生极少量的CO,且浓度变化杂乱无章。从浓度数据中提取出火灾发生的特征信息制定探测算法就可以有效地提高早期报警的分辨率,降低火灾探测的误报率。A new fire detection method is put forward based on the theory of FTIR spectroscopy through analyzing all kinds of detection methods, in which CO and CO2 are chosen as early fire detection objects, and an early fire experiment system has been set up. The concentration characters of CO and CO2 were obtained through early fire experiments including real alarm sources and nuisance alarm sources. In real alarm sources there are abundant CO and CO2 which change regularly. In nuisance alarm sources there is almost no CO. So it＇s feasible to reduce the false alarms and increase the sensitivity of early fire detectors through analyzing the concentration characters of CO and CO2.

关 键 词：傅里叶变换红外光谱(FTIR) 早期火灾探测 气体浓度探测 

分 类 号：TH74[机械工程—光学工程]