Asset tracking involving accurate location and transportation data is highly suited toWireless Sensor Networks (WSNs) featuring battery-less nodes that can be deployed in virtuallyany environment and require little or no maintenance. In response to the growing demandfor advanced battery-less sensor tag solutions, this article presents a system for identifying andmonitoring the speed of assets in a WSN with battery-less tags that receive all their operatingenergy through Radio Frequency (RF) Wireless Power Transfer (WPT) architecture, as well as aunique measurement approach to generate time-domain speed readouts. The assessment includesperformance characteristics and key features of a system on chip (SoC) purposely designed to powera node through RF WPT. The result is an innovative solution for RF to DC conversion able to addressthe principal difficulties associated with maximum power conversion efficiency (PCE) at sensitivityand vice versa, a strategy, and a design optimization model to indicate the number of readers requiredfor reliable asset identification and speed measurement. Model validation is performed throughspecific tests. Experimental results demonstrating the viability of the proposed advanced monitoringsystem are provided.
|Numero di pagine||19|
|Stato di pubblicazione||Published - 2020|
All Science Journal Classification (ASJC) codes