전기학회논문지 (The Transactions of The Korean Institute of Electrical Engineers)

  • 제67권12호
  • /
  • Pages.1641-1647
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  • 2018
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  • 1975-8359(pISSN)
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  • 2287-4364(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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용존산소 측정을 위한 무선통신 기반 휴대형 포텐쇼스탯 개발

Development of a Portable Potentiostat with Wireless Communications for Measuring Dissolved Oxygen

  • Lee, Hyun-Seok (Dept. of Electrical and Electronic Engineering, Korea University) ;
  • Han, Ji-Hoon (Dept. of Electrical and Electronic Engineering, Korea University) ;
  • Pak, Jungho (Dept. of Electrical and Electronic Engineering, Korea University)
  • 투고 : 2018.07.20
  • 심사 : 2018.09.30
  • 발행 : 2018.12.01
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초록

In this paper, we describe a portable potentiostat which is capable of cyclic voltammetry(CV) and amperometry for electrochemical dissolved oxygen sensor. In addition, this portable potentiostat can also transmit the measured data wirelessly to android devices such as smart phone, tablet, etc. through Bluetooth. The potentiostat system consists of three parts; a voltage generator circuit which is controlled by Arduino nano and 12-bit DAC(digital to analog converter) to generate necessary electric potential for operating the electrochemical sensor, an oxidation/reduction current measurement circuit, and a Bluetooth module to transmit data wirelessly to an android device. Once measurements are carried out with the android application, the measured data is transmitted to the android device via Bluetooth and displayed using the android app. in real time. In this paper, we report the measured reduction current with a fabricated dissolved oxygen sensor in both saturated-oxygen state and zero-oxygen states. The results of the developed portable potentiostat system are in good agreement with those of the commercial portable potentiostat (${\mu}stat200$, Dropsens inc.). The measured peak reduction currents using the developed potentiostat and the commercial ${\mu}stat200$ potentiostat were $-0.755{\mu}A$ and $-0.724{\mu}A$, respectively. The reduction currents measured at zero-oxygen state were $-0.005{\mu}A$ and $-0.004{\mu}A$. The discrepancy between those two systems seems very small, which implies successful development of a portable and wireless potentionstat.

키워드

참고문헌

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