Crosstalk analysis, its effects and reduction techniques among photovoltaic devices used as transparent optical sensors for a wearable line-of-sight detection system

Carlos C Cortes Torres, Kota Sampei, Miho Ogawa, Masataka Ozawa, Norihisa Miki

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Our group has developed a wearable eye-tracking system that comprises transparent optical sensors on eyeglasses to detect the reflection from the eye and thus, the position of the eye, where photovoltaic cells are used as the sensors. In this paper, crosstalk, or electric interference, among the photovoltaic cells is discussed. The crosstalk makes the neighboring sensors dependent on each other, which leads to large errors in eye-tracking. We experimentally investigated the source of crosstalk by testing different designs of photovoltaic cells and their interconnection. It was revealed that sharing of the electrolyte by the photovoltaic devices was dominant. In addition, overlapping circuits were found to contribute to the crosstalk. We revised the design of the sensors and successfully reduced the crosstalk and improved the accuracy.

Original languageEnglish
Article number06FP16
JournalJapanese Journal of Applied Physics
Volume54
Issue number6
DOIs
Publication statusPublished - 2015 Jun 1

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Optical sensors
optical measuring instruments
Crosstalk
crosstalk
line of sight
Photovoltaic cells
photovoltaic cells
sensors
Sensors
Eyeglasses
Electrolytes
electrolytes
interference
Networks (circuits)
Testing

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Crosstalk analysis, its effects and reduction techniques among photovoltaic devices used as transparent optical sensors for a wearable line-of-sight detection system. / Torres, Carlos C Cortes; Sampei, Kota; Ogawa, Miho; Ozawa, Masataka; Miki, Norihisa.

In: Japanese Journal of Applied Physics, Vol. 54, No. 6, 06FP16, 01.06.2015.

Research output: Contribution to journalArticle

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