Towards On-demand Gas Sensing

Published: 01 Jan 2021, Last Modified: 30 Sept 2024DCOSS 2021EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: Low-power operation of power-hungry MOX sensors is usually achieved by duty cycling them periodically. However, a difficulty arises if a sensor is operated at irregular time intervals due to intermittent energy availability in energy- neutral or batteryless applications. In this work, we propose a compensation method which re-maps on-demand measurements to virtually duty-cycled readings in the value domain by taking the duration of the last off-time into account. We evaluate our compensation algorithm based on Sensirion’s SGP30 sensor and achieve up to 79% accuracy improvement compared to uncompensated measurements.
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