Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Development of multi-colorimeter module for low-cost urinalysis strip readers

저가형 요분석 시스템의 다중 광 검출 모듈개발

  • Ye, Soo-Young (BK21 Medical Science Education Center, School of Medicine, Pusan National University) ;
  • Jeon, Yong-Uk (Dept. of Interdisciplinary Program in Biomedical Engineering, Graudated School Pusan National University) ;
  • Jeong, Do-Un (Division of Computer & Information Engineering, Dongseo University) ;
  • Jeon, Gye-Rok (Dept. of Biomedical Engineering, School of medicime, Pusan National Universiry) ;
  • Ro, Jung-Hoon (Dept. of Biomedical Engineering, School of medicime, Pusan National Universiry)
  • 예수영 (부산대학교 의학전문대학원 BK21 고급의료인력양성사업단) ;
  • 전용욱 (부산대학교 의학대학 의공학협동과정) ;
  • 정도운 (동서대학교 컴퓨터정보공학부) ;
  • 전계록 (부산대학교 의학전문대학원 의공학교실) ;
  • 노정훈 (부산대학교 의학전문대학원 의공학교실)
  • Published : 2008.09.30
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Abstract

An optic module system is developed adopting multiple colorimetry units for the measurement of multi-pad urinalysis dipsticks. Multiple photometry system instead of moving mechanisms has the advantages of system reliability and simplicity as well as economic aspects due to the recent development of economic color light emitting diodes and stable photo sensors. An integration amplifier with programmable integration time, a current source circuit with selectable and stable current settings were connected through analog multiplexers to thirty light emitting diodes for illumination and ten photo transistors for reading each strip pad. All the circuits are controlled by a microprocessor through a simple set of serial communication commands. The detect ability is eighteen times better than the minimum color difference of the test grading which is 0.013 in urobilinogen in the color space defined in this paper.

Keywords

References

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