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Optically-Powered Wireless Sensor Nodes towards Industrial Internet of Things.

Letícia C Souza1, Egidio R Neto1, Eduardo S Lima1

  • 1Laboratory WOCA, National Institute of Telecommunications (Inatel), 510 João de Camargo Av., Santa Rita Dusapukai 37540-000, MG, Brazil.

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|January 11, 2022
PubMed
Summary

Optically-powered wireless sensor nodes using power-over-fiber (PoF) technology offer a robust solution for Industrial Internet of Things (IIoT) applications. This system reliably powers sensors in harsh industrial settings, enabling efficient data monitoring and process management.

Keywords:
Industry 4.0energy efficiencyhazardous environmentsindustrial IoT (IIoT)optical fiberpower-over-fiber (PoF)wireless sensor network

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Area of Science:

  • Electrical Engineering
  • Industrial Automation
  • Optical Communications

Background:

  • Industrial environments pose challenges for traditional sensor power and communication due to electromagnetic interference and extreme temperatures.
  • Existing solutions for powering wireless sensor nodes in hazardous areas are often limited or costly.
  • The Industrial Internet of Things (IIoT) demands reliable and efficient sensing systems for intelligent process management.

Purpose of the Study:

  • To experimentally implement and evaluate optically-powered wireless sensor nodes using power-over-fiber (PoF) technology for IIoT applications.
  • To demonstrate the feasibility of PoF for powering sensors in challenging industrial conditions.
  • To assess the performance, power delivery, and voltage stability of the PoF system for industrial sensing.

Main Methods:

  • Development and implementation of a power-over-fiber (PoF) system to wirelessly power sensor nodes (transmitter and receiver).
  • Testing the system in two IIoT scenarios for local and remote temperature data monitoring.
  • Investigating system performance metrics including delivered electrical power and power transmission efficiency (PTE).
  • Conducting a voltage stability analysis and comparing temperature measurements with a conventional programmable logic controller (PLC).

Main Results:

  • Successfully delivered 1.4 W of electrical power with a power transmission efficiency (PTE) of 24%.
  • Demonstrated stable voltage delivery from the PoF system across a range of applications.
  • Temperature measurements from the PoF-powered system showed comparable results to a conventional industrial PLC.

Conclusions:

  • Power-over-fiber (PoF) technology is a viable solution for powering wireless sensor nodes in Industrial Internet of Things (IIoT) applications.
  • The PoF system effectively addresses challenges posed by hazardous industrial environments.
  • This technology has the potential to enhance energy efficiency and reliability in industrial sensing systems.