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Wireless sensor networks are nowadays a reality. However, a wireless node must be a truly autonomous system, i.e. it must embed its own power source, generally a battery pack. For this reason, it is of main concern to limit every source of wasted power. In particular, nodes exploit low duty-cycle strategies to increase their life, spending most of their time in low power mode, turning off all devices...
Wireless sensor networks for home automation require low-cost low-power sensors. Carbon Monoxide (CO) MOX sensors could be suitable concerning device cost; their limits concern the need to be heated, requiring a lot of power, and to be calibrated, increasing overall cost. This work investigates on behaviour of low-power CO MOX sensors with pulsed temperature profile by means of a double approach:...
Wireless Distributed Sensor Networks (WDSN) for gas detection could yield to several advantages but the high power required by MOX gas sensors reduce quickly battery life. Furthermore, the need of calibration can increase sensor networks cost. This work suggests a new heating method for MOX sensors (FIGARO TGS2442) in order to increase devices battery life by a factor 30. The proposed low power mode...
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