摘要
提出了火灾探测的单信号偏置滤波算法和处理多传感器或复合传感器信号的复合偏置滤波算法，它可以应用单个火灾信号或综合两种信号特征计算信号超过预定门限的持续时间，有效地克服了干扰信号的影响，提高了火灾探测灵敏度和抗干扰性能．
In case of fire accident, signals of fire sensors have the frature to exceed a predetermined threshold for certain duration. In the paper, the biased filter algorithms of single and multiple sensor signals for automatic fire detection are proposed. The algorithms can compute not only the signal magnitude but also the signal duration exceeding the threshold. The algorithms combine two signals from fire sensors to detect fire and improve the detectivity of fire detection systems. A single or several signal values of high magnitude that may be erroneous do not influence the final output. Test results show that systems using the algorithm are very reliable. They have been used in actual fire defection system.
出处
《华中理工大学学报》
CSCD
北大核心
1998年第6期29-31,46,共4页
Journal of Huazhong University of Science and Technology
基金
国家火炬计划资助项目
关键词
火灾探测
信号处理
数字滤波
fire detection
signal processing
digital filter
