基于旋光效应的油雾浓度检测研究  

Oil Mist Concentration Detection Based on Optical Rotation Effect

作　　者：杨伟红[1,2] 宋锦春[1] 

机构地区：[1]东北大学机械工程与自动化学院,沈阳110004 [2]辽宁工程技术大学机械学院,辽宁阜新123000

出　　处：《光电工程》2011年第3期52-57,共6页Opto-Electronic Engineering

基　　金：国家自然科学基金资助项目(50875040)

摘　　要：针对油雾具有旋光性,提出了基于旋光效应的油雾浓度检测方法。介绍了油雾浓度检测系统的基本原理,设计了检测系统的结构,建立了检测系统的数学模型,并对检测系统进行了仿真和实验研究。在雾室中利用起偏器产生线偏振光作为光信号输入,利用检偏器检测线偏振光。检测系统采用单光路检测法,用法拉第调制器进行补偿和调制,通过光电转换获取浓度信息,并用称重法对系统进行标定。实验结果表明该方法在低油雾浓度时具有较好的线性度和稳定性,检测效果良好。According to the optical activity of oil mist, the method of oil mist concentration detection based on optical rotation effect was presented. Basic principle of oil mist concentration detection system was introduced. The structure of detection system was designed. Mathematical model of detection system was established. Simulation and experiment research on the detection system was carried out. In oil mist chamber,linearly polarized light which is used as input optical signal is produced by polarizer and detected by analyzer. Using single-light-path detection method, detection system is compensated and modulated by Faraday modulator and calibrated by weighing method. Concentration information is obtained by photoelectric conversion. The experimental results show that the method has good linearity and stability, and detection effects are good when oil mist concentration is low.

关 键 词：油雾浓度 偏振光 旋光性 磁光调制 

分 类 号：O436[机械工程—光学工程] TN247[理学—光学]