The Transactions of the Korean Institute of Electrical Engineers D (대한전기학회논문지:시스템및제어부문D)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Design of High Resolution Temperature Measurement System Using Digital Signal Processor

디지털 신호처리기를 이용한 고분해능 온도측정 시스템 설계

  • 김태훈 (서울시립대학교 대학원 전자전기컴퓨터공학부) ;
  • 임주현 (서울시립대학교 대학원 전자전기컴퓨터공학부) ;
  • 김덕영 (부천대 전자과) ;
  • 고한우 (표준과학연구원) ;
  • 김성환 (서울시립대학교 전자전기컴퓨터공학부)
  • Published : 2002.07.01
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Abstract

This paper presents a linear temperature/voltage relation over a temperature range(0~100$^{\circ}C$) with high-resolution, reasonably god response linearity, reliability, and overall improved performance. A notable feature of the proposed method is that the whole temperature span is divided by 16 subbands thus the variation span of measured voltage is narrowed. Therefore noise characteristic has been improved. The output voltage is amplified after the uniformed DC voltage component is eliminated by offset. We proposed circuit using median value and mean value of digital signal in order to reduce the noise effect. The proposed circuit offers linear temperature/voltage conversion over a wide dynamic range using DSP(TMS320C31) and steinhart equation.

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References

  1. Anwar A. Khan, 'linearization of thermistor thermometer,' Int. J. Electron., vol. 59, no. 2, pp. 129-139, 1985 https://doi.org/10.1080/00207218508920686
  2. Anwar A. Khan and Mohammed A. AL-Turaigi, 'A Novel Wide Range Linearization Approach for Thermistor Thermometer,' IEEE Trans. Instrum. Meas., vol. IM-36, pp. 763-769, 1987
  3. Anwar A. Khan and R. Sengupta, 'A linear temperature/voltage converter using thermistor in logarithmic network,' IEEE Trans. Instrum. Meas., vol. IM-33, No. 1, pp. 2-4, 1984
  4. R. N. Sengupta, 'A widely linear temperature to frequency converter using a thermistor in pulse generator,' IEEE Trans. Instrum. Meas., vol. IM-37, No. 1, pp. 85-86, 1988 https://doi.org/10.1109/19.2665
  5. Ramon Pallas-Areny and John G. Webster Sensors and Signal conditioning, Wiley Inter-Science, pp. 94-109, 2001
  6. Ernest O. Doebelin, Measurement System Application and Design, McGraw-Hill, pp. 648-652, 1990