Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Sensor signal processing device for USN application and general purpose

USN응용과 범용목적에 적용가능한 센서 신호처리기

  • Park, Chan-Won (Dept. of Electrical and Electronics Engineering, Kangwon National University) ;
  • Kim, Il-Hwan (Dept. of Electrical and Electronics Engineering, Kangwon National University) ;
  • Chun, Sam-Sug (Dept. of Electrical Engineering, Korea Polytechnics VI Colleges)
  • 박찬원 (강원대학교 전기전자공학부) ;
  • 김일환 (강원대학교 전기전자공학부) ;
  • 전삼석 (한국폴리텍6대학 전기과)
  • Received : 2010.03.02
  • Accepted : 2010.05.04
  • Published : 2010.05.31
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Abstract

In sensor signal conditioning and processing, offset and drift characteristics of an operational amplifier are an important factor when the amplifier is used for a precise sensor signal amplifier. In order to use it in high accuracy, an expensive trimming or a complex compensation circuit is required. This paper presents the improved sensor signal conditioning and processing device for ubiquitous sensor network(USN) application or general purpose by developing a hardware of the circuit for reducing the offset voltage and drift characteristics, and a software for its control and sensor signal processing. We realize better offset voltage and drift characteristics of the signal conditioning circuit using low cost operational amplifiers. The experimental results show that this technique is effective in improving the performance of the sensor signal processing device.

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References

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