Signals from infrared detector are very weak in SO2 concentration measuring system.In order to improve the sensitivity of detection,combining with filter correlation technology and infrared absorption principle,the weak signal processing circuit is designed according to correlation detection technology.Under laboratory conditions,system performance of SO2 concentration is tested,and the experimental data are analyzed and processed.Then relationship of SO2 concentration and the measuring voltage is provided to prove that the design improves measuring sensitivity of the system.
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School of Electronic and Information Engineering, Beihang University, Beijing 100191, China;
Engineering Technology Research Center of Shanxi Province for Opto-Electronic Information and Instrument,North University of China, Taiyuan 030051, China;
机译：Sodium ferulate protects against influenza virus infection by activation of the TLR7/9-MyD88-IRF7 signaling pathway and inhibition of the ^z>NF-kB signaling pathwayYanhui Zhu a, Yong Shao, Xinyan Qu, Jing Guo, Jing Yang, Zhe Zhou, Shengqi Wang
