基于CZT算法的多波段红外火焰探测器设计  

Design of Multi-band Infrared Flame Detector Based on CZT Transform

作　　者：王博强 张义勇 齐跃 姜健 WANG Bo-qiang;ZHANG Yi-yong;Qi Yue;JIANG Jian(The 703 Research Institute of China State Shipbuilding Corporation, Harbin 150078, China)

机构地区：[1]中国船舶集团有限公司第七〇三研究所,哈尔滨150078

出　　处：《船海工程》2020年第6期1-4,共4页Ship & Ocean Engineering

摘　　要：为实现火灾监控系统实时性好、探测距离远、抗干扰能力强的设计目标,根据有限线性调频Z变换(CZT)理论,将各通道的红外热释电传感器的时域信号细化成特征频段的频域信号,累加各通道的模值并与实验得到的火焰报警阈值进行比较,判断是否有火焰产生,实验验证表明,基于CZT算法的多波段红外热释电传感器能够实现远距离的火焰探测,有效抵抗高温热源和强光的干扰。Aiming at the fire monitoring system,a multi-band infrared flame detector with good real-time performance,long detection range and strong anti-interference ability was developed.The time domain signals of the infrared pyroelectric sensor in each channel were refined into the frequency domain signals of the characteristic frequency band by using the theory of finite linear frequency modulation Z transform(CZT).The modulus values of each channel were accumulated and compared with the flame alarm threshold obtained by experiment to judge whether there was flame.Through a large number of verification experiments,the multi-band infrared pyroelectric sensor based on CZT algorithm could realize the remote flame detection,and effectively resist the interference of high temperature heat source and strong light.

关 键 词：红外火焰探测器 热释电元件 有限调频变换 频域信号处理 火灾监控系统 

分 类 号：U665.26[交通运输工程—船舶及航道工程]