环境污染气体荧光与吸收谱检测技术及系统实现

项目名称： 环境污染气体荧光与吸收谱检测技术及系统实现

项目编号： No.61201110

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 电子学与信息系统

项目作者： 王书涛

作者单位： 燕山大学

项目金额： 26万元

中文摘要： 二氧化硫及甲烷等是主要的环境污染气体，对生产及生态环境破坏较大并严重危害着人类健康。由甲烷引发的安全事故，对煤炭、石化等企业的正常运营及职工生命安全构成了严重威胁。课题研究二氧化硫及甲烷等气体的吸收及荧光光谱特性，分别建立紫外及可见波段吸收线光强、荧光光强或寿命与气体含量间的定量关系及相应数学模型。在此基础上，构建气体浓度全光纤检测系统。系统将荧光谱与吸收谱检测技术相结合，实现对环境污染及危险气体浓度的高精度、实时监测。适当变换仪器硬件结构，可拓展仪器的适用性及使用范围。利用光子晶体光纤传光及传感特性，设计并研制高灵敏度光子晶体光纤探头，实现多种气体检测。研究的仪器及系统不仅可以对煤炭、石化、冶炼等行业区域的危险气体进行连续监测和预警，还可为环保部门和工厂提供污染状况资料和精确的数据，将对我国环境监测仪器的发展起到推动作用。

中文关键词： 甲烷；二氧化硫；光谱；空芯光子带隙光纤；经验模态

英文摘要： Sulfur dioxide and methane are the main environmental pollution gas. They destruct the manufacturing and ecological environment and also harm human health severely. Safety accidents induced by methane threaten the normal operation of coal and petrochemical enterprises and the safety of the workers. Absorption and fluorescence spectrum characteristic of sulfur dioxide and methane gas are researched in this subject. The quantitative relationship and the corresponding mathmatical model between the absorption line intensity in ultraviolet and visible band, fluorescence intensity or life and gas content are established. On this basis the gas concentration full optical fiber detection system is constructed. The fluorescence spectrum and absorption spectrum detection technology are combined in this system, which can realize the high precision and real-time monitoring of the environmental pollution and hazardous gas concentration. The instrument's range of applicability can be expanded by the proper transformation of the instrument hardware structure. According to the optical transmission and sensing characteristics of photonic crystal fiber, photon crystal optical fiber probe with high sensitivity is designed and developed to achieve the detections of more other gas. The instrument and the system can not only proceed c

英文关键词： CH4；SO2；spectrum；hollow core photonic band gap fiber；empirical mode