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http://dx.doi.org/10.6109/jkiice.2021.25.8.1130

Miniaturized Sensor Interface Circuit for Respiration Detection System  

Jo, Sung-Hun (Department of Electronic Engineering, Dongseo University)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.25, no.8, 2021 , pp. 1130-1133 More about this Journal
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
Sensor interface circuit; Respiration detection system; Compensation technique; Low-cost miniaturized electronics;
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