Ultra Low Power Wireless Sensor Nodes for Expanding Application of the Internet of Things

Implementation of the internet of things (IoT) by equipping various objects in the world with wireless sensor nodes would result in improved efficiency, accuracy and economic benefit. However, since power supply including energy harvesting is always crucial for wireless sensor nodes, one of most important technological issues must be minimization of power consumption on the nodes. In this report, ultra-low power wireless sensor nodes for monitoring of chicken health and for power saving are introduced, and as the key technologies for node power reduction, low power sensing ("tipping bucket") and communication methods are presented. In addition, as another application of these technologies, vibration-powered sensor nodes for pump condition monitoring are reported.