基于中红外光声光谱的火灾监测报警系统设计  

Design of Fire Monitoring and Alarm System Based on Mid Infrared Photoacoustic Spectroscopy

作　　者：曹植 CAO Zhi(Xi'an Traffic Engineering University,Xi'an 710300,China)

机构地区：[1]西安交通工程学院,陕西西安710300

出　　处：《电声技术》2025年第2期20-22,共3页Audio Engineering

摘　　要：设计一种基于中红外光声光谱技术的火灾监测报警系统,将分布反馈量子级联激光器作为光源,结合硅基微机电系统麦克风和数字信号处理技术,实现对火灾早期特征气体的超痕量检测。实验表明,该系统对CO气体的最低检出限达5×10^(-8),响应时间小于4 s,在复杂环境中表现出优异的抗干扰性能。A fire monitoring and alarm system based on mid-infrared photoacoustic spectroscopy technology is designed.The distributed feedback quantum cascade laser is used as the light source,and the ultra-trace detection of characteristic gases in the early stage of fire is realized by combining the silicon-based MEMS microphone and digital signal processing technology.Experiments show that the minimum detection limit of the system for CO gas is 5×10~(-8),and the response time is less than 4 s,which shows excellent antiinterference performance in complex environment.

关 键 词：中红外光声光谱 火灾监测 量子级联激光器 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]