Research on signal processing method for total organic carbon of water quality online monitor

3rd International Conference on Water Resource and Environment

地球科学;生态环境科学

Ma, R.^1,2 ; Xie, Z.X.^1 ; Chu, D.Z.^2 ; Zhang, S.W.^2 ; Cao, X.^2 ; Wu, N.^2

Engineering College, Ocean University of China, No. 238 Songling Road, Laoshan District, Qingdao City, Shandong Province

266100, China^1

Institute of Oceanographic Instrument, Shandong Academy of Science, No. 37 Miaoling Road, Laoshan District, Qingdao City, Shandong Province

266061, China^2

关键词: Amplifier modules;    Comparison test;    Effective approaches;    On-line monitors;    Online monitoring;    Optical signals;    Photo multiplier tube;    Total Organic Carbon;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/82/1/012086/pdf
DOI  :  10.1088/1755-1315/82/1/012086

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

At present, there is no rapid, stable and effective approach of total organic carbon (TOC) measurement in the Marine environmental online monitoring field. Therefore, this paper proposes an online TOC monitor of chemiluminescence signal processing method. The weak optical signal detected by photomultiplier tube can be enhanced and converted by a series of signal processing module: phase-locked amplifier module, fourth-order band pass filter module and AD conversion module. After a long time of comparison test & measurement, compared with the traditional method, on the premise of sufficient accuracy, this chemiluminescence signal processing method can offer greatly improved measuring speed and high practicability for online monitoring.