Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Miniaturized Sensor Interface Circuit for Respiration Detection System

호흡 검출 시스템을 위한 초소형 센서 인터페이스 회로

  • Jo, Sung-Hun (Department of Electronic Engineering, Dongseo University)
  • Received : 2021.06.29
  • Accepted : 2021.07.30
  • Published : 2021.08.31
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Abstract

In this paper, a miniaturized sensor interface circuit for the respiration detection system is proposed. Respiratory diagnosis is one of the main ways to predict various diseases. The proposed system consists of respiration detection sensor, temperature sensor, and interface circuits. Electrochemical type gas sensor using solid electrolytes is adopted for respiration detection. Proposed system performs sensing, amplification, analog-to-digital conversion, digital signal processing, and i2c communication. And also proposed system has a small form factor and low-cost characteristics through optimization and miniaturization of the circuit structure. Moreover, technique for sensor degradation compensation is introduced to obtain high accuracy. The size of proposed system is about 1.36 cm2.

Keywords

Acknowledgement

This work was supported by the Dongseo University Research Fund of 2020. (DSU-20200028)

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