@inproceedings{a6fe52fea8b54e7eaf2ccd239163ab98,
title = "Textile-based passive sensor for air humidity",
abstract = "In this paper, the manufacturing parameters of a passive ultra-high frequency (UHF) radio frequency identification (RFID)-based air humidity sensor were studied and optimized to reach the highest sensing ability. The sensor is fabricated by 3D printing combined with embroidering technology. In a high humidity environment, the sensor tag permanently changes its shape from flat to curved, which has a significant effect on the sensor tag read range and received signal strength indicator (RSSI) value. By modifying the infill percentage of the 3D-printed pattern and the stretching percentage of the elastic textile, the curving of the sensor tag can be modified. Based on the study, the stretching percentage of the elastic textile has the most significant influence on the sensor performance. As a result, the wireless performance of the sensor tag with optimized manufacturing parameters has a significant change in curvature after exposure to 60 % relative humidity for one hour. This passive sensor can provide cost-effective and flexible monitoring of air humidity for versatile application fields.",
keywords = "3D printing, Antennas, Embroidery, Humidity sensor, Passive UHF RFID, Textile electronics",
author = "Han He and Xiaochen Chen and Zahangir Khan and Lauri Syd{\"a}nheimo and Leena Ukkonen and Jiahui Li and Hiroshi Nishikawa and Johanna Virkki",
note = "Funding Information: ACKNOWLEDGMENT This work was supported by Jane and Foundation and The Academy of Finland. Publisher Copyright: {\textcopyright} 2020 IEEE. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; IEEE Electronics System-Integration Technology Conference ; Conference date: 15-09-2020 Through 18-09-2020",
year = "2020",
month = sep,
day = "15",
doi = "10.1109/ESTC48849.2020.9229716",
language = "English",
series = "Proceedings - 2020 IEEE 8th Electronics System-Integration Technology Conference, ESTC 2020",
publisher = "IEEE",
booktitle = "Proceedings - 2020 IEEE 8th Electronics System-Integration Technology Conference, ESTC 2020",
}