Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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A Passive Transponder for Visible Light Identification Using Ultrasonic wave

초음파를 이용한 가시광인식 수동형 트랜스폰더

  • Lee, Seong-Ho (Department of Electronics and IT Media Engineering, Seoul National University of Science and Technology)
  • 이성호 (서울과학기술대학교전자IT미디어공학과)
  • Received : 2017.05.15
  • Accepted : 2017.05.23
  • Published : 2017.05.31
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Abstract

In this paper, we newly developed a passive transponder for visible light identification (VLID) using ultrasonic wave. The solar cell in the transponder receives the reader light and generates current for supplying power to the transponder circuit. At the same time the solar cell detects the interrogating signal in the visible light from the reader. The transponder recognizes the interrogating signal and generates the responding signal using ultrasonic wave. In experiments, we used 40 kHz ultrasonic wave for the responding signal from the transponder. The maximum read distance was about 3.4 m when the transponder was exposed to the reader light of 24W LED array.

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References

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