基于二维流动式电离室结构的光离子传感器  

Photonic Ion Sensor Based on Two-dimensional Flow-through Ionization Chamber Structure

作　　者：李文 李杰 王岽[2] 骆紫云 郦和生[2] 薛琳 周豪 LI Wen;LI Jie;WANG Dong;LUO Ziyun;LI Hesheng;XUE Lin;ZHOU Hao(Institute of Mechanical and Electrical Engineering,North China University of Technology;SINOPEC(Beijing)Research Institute of Chemical Industry Co.,Ltd.)

机构地区：[1]北方工业大学机电工程学院 [2]中国石化(北京)化工研究院有限公司

出　　处：《仪表技术与传感器》2025年第3期25-29,36,共6页Instrument Technique and Sensor

基　　金：国家自然科学基金(51205005)。

摘　　要：基于光离子检测原理,提出一种新型二维流动式电离室结构,设计了用于VOCs检测的光离子传感器。通过电场力的电荷运动学分析,得出新模型离子运动到极板上的时间最短,理论上验证结构的可行性。实验结果表明:传感器的响应时间为4~4.5 s、恢复时间为3.5~4.5 s,具有较快的响应恢复速度;灵敏度在90 mV/ppm以上,有较高的灵敏度;拟合度R^(2)=0.99994,线性拟合度良好。Employing the principles of photonic ion detection,a novel two-dimensional flow-through ionization chamber structure was proposed,and a photonic ion sensor for the detection of VOCs was designed.Through the kinematic analysis of charge motion driven by electric fields,the time of the new model ions to reach the electrode plates was the shortest,theoretically validating the feasibility of the structure.Experimental results show that the sensor has a response time of 4 s to 4.5 s and a recovery time of 3.5 s to 4.5s,indicating a rapid response and recovery speed.With a sensitivity exceeding 90 mV/ppm and an excellent linearity with a fitting coefficient R^(2)of 0.99994,the sensor demonstrates high sensitivity and good linear fit.

关 键 词：挥发性有机物 电离室 光离子传感器 

分 类 号：TQ050[化学工程]