scholarly journals Piezoelectric Energy Harvesting towards Self-Powered Internet of Things (IoT) Sensors in Smart Cities

Sensors ◽  
2021 ◽  
Vol 21 (24) ◽  
pp. 8332
Author(s):  
Iman Izadgoshasb

Information and communication technologies (ICT) are major features of smart cities. Smart sensing devices will benefit from 5 G and the Internet of Things, which will enable them to communicate in a safe and timely manner. However, the need for sustainable power sources and self-powered active sensing devices will continue to be a major issue in this sector. Since their discovery, piezoelectric energy harvesters have demonstrated a significant ability to power wireless sensor nodes, and their application in a wide range of systems, including intelligent transportation, smart healthcare, human-machine interfaces, and security systems, has been systematically investigated. Piezoelectric energy-harvesting systems are promising candidates not only for sustainably powering wireless sensor nodes but also for the development of intelligent and active self-powered sensors with a wide range of applications. In this paper, the various applications of piezoelectric energy harvesters in powering Internet of Things sensors and devices in smart cities are discussed and reviewed.

Sensors ◽  
2021 ◽  
Vol 22 (1) ◽  
pp. 57
Author(s):  
Letícia C. Souza ◽  
Egidio R. Neto ◽  
Eduardo S. Lima ◽  
Arismar Cerqueira Sodré Junior

We report the experimental implementation of optically-powered wireless sensor nodes based on the power-over-fiber (PoF) technology, aiming at Industrial Internet of Things (IIoT) applications. This technique employs optical fibers to transmit power and is proposed as a solution to address the hazardous industrial environment challenges, e.g., electromagnetic interference and extreme temperatures. The proposed approach enables two different IIoT scenarios, in which wireless transmitter (TX) and receiver (RX) nodes are powered by a PoF system, enabling local and remote temperature data monitoring, with the purpose of achieving an intelligent and reliable process management in industrial production lines. In addition, the system performance is investigated as a function of the delivered electrical power and power transmission efficiency (PTE), which is the primary performance metric of a PoF system. We report 1.4 W electrical power deliver with PTE = 24%. Furthermore, we carry out a voltage stability analysis, demonstrating that the PoF system is capable of delivering stable voltage to a wide range of applications. Finally, we present a comparison of temperature measurements between the proposed approach and a conventional industrial programmable logic controller (PLC). The obtained results demonstrate that PoF might be considered as a potential technology to power and enhance the energy efficiency of IIoT sensing systems.


2019 ◽  
Vol 19 (3) ◽  
pp. 1114-1126 ◽  
Author(s):  
Marco Bobinger ◽  
Sherif Keddis ◽  
Stefan Hinterleuthner ◽  
Markus Becherer ◽  
Fabian Kluge ◽  
...  

2012 ◽  
Vol 12 (8) ◽  
pp. 2680-2689 ◽  
Author(s):  
T. J. Kazmierski ◽  
G. V. Merrett ◽  
Leran Wang ◽  
B. M. Al-Hashimi ◽  
A. S. Weddell ◽  
...  

2008 ◽  
Author(s):  
Yongtai He ◽  
Yangqiu Li ◽  
Lihui Liu ◽  
Lei Wang

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