Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
권호 표지

Design of Sample Chamber and Implementation of a 4-Channel Electrolyte Analyzer using ISFET Microsensor

ISFET 마이크로센서용 샘플챔버 설계 및 4채널 전해질 분석기의 구현

  • Bae, Sang-Kon (Department of Electronics, Kyungpook National University) ;
  • Lee, Ho-Shin (Department of Electronics, Kyungpook National University) ;
  • Won, Chul-Ho (Department of Electronics, Kyungpook National University) ;
  • Chae, Seung-Pyo (Department of Electronics, Kyungpook National University) ;
  • Kim, Chang-Soo (STRC) ;
  • Cho, Byung-Wook (Department of Electronics, Kyungpook National University) ;
  • Sohn, Byung-Ki (Department of Electronics, Kyungpook National University) ;
  • Kim, Myoung-Nam (Department of Biomedical Engineering, Kyungpook National University Hospital) ;
  • Cho, Jin-Ho (Department of Electronics, Kyungpook National University)
  • Published : 1997.07.31
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Abstract

In this paper, a sample chamber which provide easy replacement of ISFET sensor and consume only small sample volume for electrolyte analysis is designed and a 4-channel electrolyte analyzer employing 2-point calibration method is implemented. In addition, we proposed sample loading detection circuit for minimizing sample and calibration solutions and implemented it. Developed electrolyte analyzer consists of control system part and flow system part. For the effective control of the developed hardware, system software is developed as three individual routines ; measuring routine, calibration routine and washing routine.

본 논문에서는 센서교환이 용이하고 소량의 샘플을 요구하는 ISFET 센서용 전해질 분석기의 샘플챔버(sample chamber)를 설계하였으며, 이를 이용한 2점 교정방식의 4채널 전해질 분석기를 구현하였다. 샘플과 교정용액들의 사용을 최소화하기 위한 샘플의 로딩상태 감지회로를 제안하였으며 이를 실현하였다. 구현된 전해질 분석기는 제어계통과 액류흐름계통으로 구성되어 있으며 전해질 분석기의 효과적인 제어를 위하여 측정루틴, 교정루틴 및 세척루틴의 시스템 소프트웨어를 각각 개발하였다.

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