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Electronics, Volume 8, Issue 8 (August 2019)
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Cover Story (view full-size image) The selection of suitable semiconducting metal oxide (MOX) gas sensors for any specific gas is [...] Read more. The selection of suitable semiconducting metal oxide (MOX) gas sensors for any specific gas is time-consuming as the sensor’s sensitivity needs to be characterized at multiple temperatures to find its optimal operating conditions. For reliable results, the power for the sensor's heater needs to be stable and error-free, which can only be achieved if the supply implements failure-avoiding, failure-detection, and power regulation methods. Another challenge is good power conversion efficiency and keeping the system small and lightweight. In our work, we present such an efficient and reliable embedded system for the automated characterization of up to 16 sensors. . View this paper.