A FPGA-based EIS system for corrosion monitoring of Offshore Wind Turbines

• Main Authors: Yu-Tong Kuo, 郭昱彤
• Other Authors: 李岳聯
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/k57yf4

碩士 === 國立臺灣大學 === 工程科學及海洋工程學研究所 === 106 === Electrochemical impedance spectroscopy (EIS) is recognized as a powerful and noninvasive technique to test the integrity of protective coatings applied on metallic materials, however, commercial EIS systems are rather costly and bulky though versatile devices. In this study, a low-cost and miniaturized impedance measurement instrument, a coating impedance detector (CID), is proposed The first part of this study describes our research work on the CID design for quick estimate of the protective capacity of coatings purposes. The performance of the CID was compared with a conventional potentiostat by measuring the impedance modulus of commercial coatings. In the second part of this study, a FPGA-based prototype of CID (CID 2.0) has been further established. The results indicate a good correlation between the impedance moduli obtained by the CID 2.0 and laboratory type potentiostat in the range of 106–109 Ω-cm2, which is extremely useful to help workers determine whether coating maintenance should be scheduled.