An Embedded, Low-Power, Wireless NO₂ Gas-Sensing Platform Based on a Single-Walled Carbon Nanotube Transducer

Abstract

This work proposes a portable, software-defined NO2-sensing platform, which is able to acquire currents ranging from nA to µA from a Single-Walled Carbon Nanotube (SWCNT) gas sensor. It includes an embedded software that steers the system allowing dynamical adjustments of the SWCNT bias levels, measurement range, sampling rate and of measurement time intervals. Further, the embedded functions can post-process the measurement results, log data on an SD card or send data via a wireless connection.

Keywords

• SWCNT
• NO₂ gas sensing
• embedded system
• software defined