Position Detection on Two-Dimensional Signal Transmission Sheet by Magnetic Field Pattern Sensing
Kei Nakatsuma, Yasuaki Monnai, Yasutoshi Makino, Hiroyuki Shinoda · 2007
This paper proposes a method for a ubiquitous sensor to detect the position and direction on the Two-Dimensional Signal Transmission sheet (2DST sheet), and conducts several basic experiments. First, we propose the algorithm to code the position information on the 2DST sheet, and prove that the room-sized 2DST sheet is covered by using this algorithm. Next, we perform simulations of the electromagnetic field modulation by the coding pattern, and confirm the vertical direction magnetic field is useful to detect the coding pattern because it is especially strong along the edge of the conductor pattern. Finally, we design a coil detector which sense this vertical-direction magnetic field and conducted the experiments. The results show that our method is useful for position detection on the 2DST sheet.