Design of Energy Efficient Chemiresistive Sensor Readout Circuits for Respiration based Health Monitoring System

This work focuses on the designing of interfacing circuit for an ultrafast resistive humidity sensors for real-time monitoring of respiration. Traditional circuits that are used in general, often lack in gauging accurate changes in breathing patterns. Here, we designed the circuit using LTSPICE simulation software based on the correlation between resistance and frequency. The simulation was performed for the resistance range of $5 \mathrm{k} \Omega$ to $7 \mathrm{M} \Omega$. In addition, we have emphasized on the importance of minimum energy consumption through adaptive biasing technique in operating such devices