红外线分析仪在空气检测中的应用.doc

山西师范大学本科毕业论文 红外线分析仪在空气检测中的应用 姓 名 张胜强 院 系 物理与信息工程学院 专 业 电子信息科学与技术 班 级 学 号 0552020116 指导教师 赵青云 答辩日期 成 绩 二○○八年一二月 红外线分析仪在空气检测中的应用 内容摘要 随着社会经济的快速发展，工业化水平的提高，环境问题已成了当今社会的主要问题，采取合理有效的措施对大气污染气体进行快速、准确的检测已刻不容缓，红外线气体分析仪是一种自动化分析仪表，具有连续自动测量，精度高，测量范围宽等优点。利用红外线进行气体分析是基于待分析组分的浓度不同,吸收的辐射能不同,剩下的辐射能使得检测器里的温度升高不同,动片薄膜两边所受的压力不同,从而产生一个电容检测器的电信号。这样,就可间接测量出待分析组分的浓度。气体对红外线的吸收遵循着比耳定律E=E。*e-kcl。利用这个原理我们可以用它快速有效地对大气污染进行检测，间接地获取污染气体在大气中的浓度，再通过MATLAB强大的运算能力对所得数据进行处理，得到精确的污染气体浓度，从而作出相应的措施进行大气污染预防和治理。本文基于对红外线气体分析仪原理的深入分析和理解，设计了红外线气体分析仪对大气污染气体的检测，并对数据进行合理的处理。 关键词：大气污染 红外线气体分析仪 比耳定律 检测电容器 小波变换 Infrared analyzer in the air detection Abstract With the rapid socio-economic development, raise the level of industrialization, environmental issues have become major issues in todays society, to take reasonable and effective measures against air pollution in the gas quick and accurate detection is no time to lose, infrared gas analyzer is an automated Analytical instruments, with continuous measurement of automatic high precision, measuring a wide range of advantages. Infrared gas analysis is to be based on the analysis of the concentration of different components, to absorb the radiation, making the rest of the radiation detector in the temperature, moving film with the pressure on both sides of the film, resulting in a capacitance testing The signal device. In this way, can be indirectly measured the concentration of components to be analyzed. The absorption of infrared gas followed Beers law E = E. * e-kcl. Take advantage of this principle, we can use it to quickly and efficiently to the air pollution testing, indirect access to gas pollution in the atmosphere of concentration, and then through the MATLAB powerful computing capability for the data processing, to be precise concentrations of gas pollution in order to make a corresponding Measures to prevent and control air pollution. Key words: Air Pollution Infrare