Underwater GMR sensor data storage using RFID tags

Radio-frequency Identification (RFID) technology is now widely used in many commercial and industrial sectors, from object tracking to personal identification. Few studies have investigated the possibility of using RFID systems for underwater monitoring operations in fluvial environments. While the technical limitations of these circumstances can be surmountable in certain cases, ad hoc studies have shown that RFID technology can work even under water. This paper presents the development of a device to collect and store data from a giant magnetoresistance (GMR) sensor for underwater corrosion monitoring using RFID. The findings show that RFID systems can be used to store data at near ranges of less than 5 mm regardless of frequency. This paper also provides an investigation into RFID, transponders, and reader classification, as well as existing applications underwater and their benefits.