扬沸火灾监测预报方法研究（Ⅱ）──实验分析

A Study on the Monitoring and predicting Method for Boilover Fires Part.Ⅱ──Experimental Analysis

实现在大环境背景噪声条件下对扬沸前兆微爆噪声的识别，是利用扬沸前兆噪声监测预报扬沸火灾的技术关键。本文则在第一部分的理论基础之上，重点分析了扬沸前兆噪声和典型火灾现场环境噪声的声学特性，从其中寻找出能有效地进行扬沸火灾监测预报的一些特征物理量。为进一步实现在实际火灾现场大环境下利用前兆噪声监测预报扬沸火灾提供了条件。

The key step of the approach to monitoring and predicting the occurrence of boiover fires by its premenitory miero-explosion meise if how to identify the premonitory micro-explosion noise with the existence of background niotore of the actual fire environment.Based on the fundamentals presented in the part Ⅰ, this part of the paper,focused on the experimen tal analysis in contrast with the acoustic characteristics of boilover premonitory noise and the typical fire field environment noise, and a set of specific quality showing their difference was sorted out.Some enperiments were conduct to illustrate the effectiveness of this Mothed and some results were given.