Open AccessSmart radio‐frequency identification tag for diaper moisture detection
Author(s) -
Ziai M.A.,
Batchelor John C.
Publication year - 2015
Publication title -
healthcare technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.45
H-Index - 19
ISSN - 2053-3713
DOI - 10.1049/htl.2014.0098
Subject(s) - radio frequency identification , radio frequency , computer science , electromagnetic coil , acoustics , materials science , electrical engineering , telecommunications , engineering , physics , computer security
A passive smart tag is described that responds to dampness in diapers once a pre‐defined threshold value is reached. A high‐frequency (HF) system at 13.56 MHz is used as this allows operation through water or human tissues with less absorption that would occur for an ultra‐HF signal. A circular spiral coil and swelling substrate facilitate a reaction to dampness that can be detected without contact to the diaper wearer. A prototype design is simulated and measured results are provided together with a demonstration of a tag integrated into a worn diaper.