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Position Detection in Two-Dimensional Communication

last modified: December 1, 2011

in Japanese

 

We propose a method of high accuracy device position and orientation detection in Two-Dimensional Communication environment. Two-Dimensional Communication (2DC) is a technology which enables devices placed on a thin sheet to achieve two key functions for ubiquitous computing, to communicate one another and to receive electricity through the sheet wirelessly. Our positioning function encodes the position information into the top meshed conductive layer of the 2DC sheet. A capacitance sensor array captures the position information pattern and detects its position and orientation on the sheet. Our prototype achieves the positional errors smaller that 4 mm and the rotation angular errors smaller the 3 deg. This work has wide-range applications in fields of sensor network, ubiquitous computing, and human-computer interaction.

Information about Two-Dimensional Communication: http://www.alab.t.u-tokyo.ac.jp/~shino/2Dcom/2DST.html (Movie)

Position Information encoded on the 2DC sheet
Position Information Pattern on the Two-Dimensional Communication (Signal Transmission) sheet

Capacitance Sensor Array
Capacitance Sensor Array

 

Publications

  • Kei Nakatsuma, and Hiroyuki Shinoda, “High Accuracy Position and Orientation Detection in Two-Dimensional Communication Network,” in Proc. CHI 2010 (The 28th Annual ACM SIGCHI Conference on Human Factors in Computing Systems), pp. 2297-2306, Apr., 2010, Atlanta, USA.

    [ ACM Portal, PDF ]

Members

Kei Nakatsuma, and Hiroyuki Shinoda

Acknowledgements

The project is partly supported by

  • Grant-in-Aid for JSPS Fellows (21-5508) (Japan)
  • National Institute of Information and Communications Technology (NICT) 13701 (Japan)

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