多通道火灾探测信号的分析与合成方法

Analysis and Synthesis of Multichannel Fire Detection Signals

提出一种多通道火灾探测信号的分析与合成方法，通过建立基于信号互功率谱的多通道信号模型，提取火灾和非火灾两种情形下的烟雾、温度等实际信号的统计特征，自适应合成信号序列，探讨了模型参数的选择，并开发了探测算法模拟测试系统．实验表明，该方法能有效地测试出探测算法的火灾报警时间和误报警率等性能指标．

A method of analysis and synthesis of multichannl fire detection signals is proposed. With the development of a model for multi channel signals based on the cross power density spectrum, the statistical properties of actual signals of smoke density and temperature for both fire and non fire cases can be extracted and several signal sequences are adaptively synthesized. The selection of model parameters is investigated and a simulation system for the test of detection algorithms is developed. Experiments show that the system developed can effectively test the performance or the alarming time and false alarm rate of various detection algorithms.