Earticle

초록

영어

This paper presents a temperature measurement system without the input buffer. A voltage follower or a buffer is required to minimize the influence of the ADC input impedance in the thermistor temperature measurement system. In such system, a high performance operational amplifier is usually required to prevent the noise and distortion due to the additional circuit. Negative power is also necessary to prevent the distortion of the low voltage input signal. This paper introduces a buffer-less system with a calibration method to resolve such problems. The low temperature coefficient precision resistors were employed to calibrate the input resistance and the leakage current of ADC. The experimental results show that the calibrated error decreased from 190mK to 40mK. As a result, it was shown that the ADC input impedance is time-independent.

목차

Abstract
 1. Introduction
 2. Methods
 3. Results and Discussions
 Acknowledgments
 References

키워드

저자

• Jong-Dae Kim [ Dept. of Ubiquitous Computing, Hallym University, Korea, Bio-IT Research Center, Hallym University, Korea ]
• Chan-Young Park [ Dept. of Ubiquitous Computing, Hallym University, Korea, Bio-IT Research Center, Hallym University, Korea ] Corresponding Author
• Ji-Min Kim [ Department of Computer Engineering, Hallym University, Korea ]
• Yu-Seop Kim [ Dept. of Ubiquitous Computing, Hallym University, Korea, Bio-IT Research Center, Hallym University, Korea ]
• Hye-Jeong Song [ Dept. of Ubiquitous Computing, Hallym University, Korea, Bio-IT Research Center, Hallym University, Korea ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Control and Automation

• 간기

  월간

• pISSN

  2005-4297

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605