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An IoT Reader for Wireless Passive Electromagnetic Sensors.

Gabriel Galindo-Romera1, Javier Carnerero-Cano2, José Juan Martínez-Martínez3

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This summary is machine-generated.

A new low-cost, portable Internet-of-Things (IoT) reader enables remote sensing with passive electromagnetic sensors. This system avoids direct contact with substances, offering a simpler and more cost-effective solution for measuring harmful materials.

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Area of Science:

  • Electromagnetic sensing
  • Internet of Things (IoT) applications
  • Sensor technology

Background:

  • Passive electromagnetic sensors are used for detecting harmful substances.
  • Current methods rely on expensive and complex laboratory equipment for sensor response.
  • This necessitates a more accessible and portable sensing solution.

Purpose of the Study:

  • To propose a novel, low-cost, and portable Internet-of-Things (IoT) reader for passive wireless electromagnetic sensors.
  • To enable remote interrogation of sensors without direct contact with substances.
  • To facilitate remote sensing capabilities using computers and handheld devices.

Main Methods:

  • The proposed IoT reader is designed with four functional layers: radiating, RF interface, IoT mini-computer, and power unit.
  • A demonstrator of the reader was designed and manufactured.
  • The system was tested for remote measurement of different substances to estimate dielectric permittivity.

Main Results:

  • The developed IoT reader successfully interrogated passive wireless electromagnetic sensors remotely.
  • The system demonstrated the ability to estimate the dielectric permittivity of various substances.
  • A linear approximation with minimal error was extracted from the reader's measurements.

Conclusions:

  • The proposed low-cost, portable IoT reader offers a viable alternative to complex laboratory equipment for passive electromagnetic sensors.
  • The system enables remote, wireless sensing, enhancing accessibility and reducing costs.
  • The reader's design is versatile and can be adapted for other electromagnetic sensors that transduce magnitude variations in the frequency domain.