| abstract |
PROBLEM TO BE SOLVED: To simplify the configuration of a system for determining a corroded state of an iron-based structure. A corrosion detection system 100 detects and outputs illuminances of red, green, and blue contained in light reflected from an iron-based structure, respectively, and a red color output from the first RGB sensor 31. A determination unit 53 for determining a corroded state of an iron-based structure based on changes in illuminance of green and blue with time. [Selection diagram] Fig. 3 |