A 1.02 μW Autarkic Threshold-Based Sensing and Energy Harvesting Interface Using a Single Piezoelectric Element

A self-powered piezoelectric sensor interface employing part of the signal that is not intended for measurement to sustain its autonomous operation was designed using XH018 (180 nm) technology. The aim proposed circuit, besides energy self-sufficiency sensor, provide an eliminates effect harvesting process on output which contains context data. This achieved by isolating desirable sensing from so former affected or distorted latter. Moreover, circuit manages self-start operation, no additional battery pre-charged capacitor needed. achieves a very low power consumption 1.02 μW. As proof concept, interfacing implemented in order be potentially used weigh-in-motion applications.