RFTouchPads: batteryless and wireless modular touch sensor pads based on RFID

Meng-Ju Hsieh, Jr-Ling Guo, Chin-Yuan Lu, Han-wei Hsieh, Rong-Hao Liang, Bing-Yu Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

This paper presents RFTouchPads, a system of batteryless and wireless modular hardware designs of two-dimensional (2D) touch sensor pads based on the ultra-high frequency (UHF) radio-frequency identification (RFID) technology. In this system, multiple RFID IC chips are connected to an antenna in parallel. Each chip connects only one of its endpoints to the antenna; hence, the module normally turns off when it gets insufficient energy to operate. When a finger touches the circuit trace attached to another endpoint of the chip, the finger functions as part of the antenna that turns the connected chip on, while the finger touch location is determined according to the chip's ID. Based on this principle, we propose two hardware designs, namely, StickerPad and TilePad. StickerPad is a flexible 3×3 touch-sensing pad suitable for applications on curved surfaces such as the human body. TilePad is a modular 3×3 touch-sensing pad that supports the modular area expansion by tiling and provides a more flexible deployment because its antenna is folded. Our implementation allows 2D touch inputs to be reliability detected 2 m away from a remote antenna of an RFID reader. The proposed batteryless, wireless, and modular hardware design enables fine-grained and less-constrained 2D touch inputs in various ubiquitous computing applications.
Original languageEnglish
Title of host publicationUIST 2019 - Proceedings of the 32nd Annual ACM Symposium on User Interface Software and Technology
Subtitle of host publicationProceedings of the 32nd Annual ACM Symposium on User Interface Software and Technology
Place of PublicationNew York
PublisherAssociation for Computing Machinery, Inc
Pages999-1011
Number of pages13
ISBN (Electronic)978-1-4503-6816-2
DOIs
Publication statusPublished - 20 Oct 2019
EventUIST '19 32nd Annual ACM Symposium on User Interface Software and Technology - New Orleans, United States
Duration: 20 Oct 201923 Oct 2019

Conference

ConferenceUIST '19 32nd Annual ACM Symposium on User Interface Software and Technology
CountryUnited States
CityNew Orleans
Period20/10/1923/10/19

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Keywords

  • Batteryless
  • Modular sensing
  • RFID
  • Sensors
  • Touch inputs
  • Wireless sensing

Cite this

Hsieh, M-J., Guo, J-L., Lu, C-Y., Hsieh, H., Liang, R-H., & Chen, B-Y. (2019). RFTouchPads: batteryless and wireless modular touch sensor pads based on RFID. In UIST 2019 - Proceedings of the 32nd Annual ACM Symposium on User Interface Software and Technology: Proceedings of the 32nd Annual ACM Symposium on User Interface Software and Technology (pp. 999-1011). New York: Association for Computing Machinery, Inc. https://doi.org/10.1145/3332165.3347910