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LTCC Flow Sensor with RFID Interface.

Mariusz Węglarski1, Piotr Jankowski-Mihułowicz1, Grzegorz Pitera1

  • 1Department of Electronic and Telecommunications Systems, Rzeszów University of Technology, Wincentego Pola 2, 35-959 Rzeszów, Poland.

Sensors (Basel, Switzerland)
|January 8, 2020
PubMed
Summary

This research introduces battery-less flow sensors using Low Temperature Co-fired Ceramic (LTCC) and RadioFrequency Identification (RFID) for wireless measurements. The autonomous sensor harvests energy from electromagnetic fields, eliminating the need for traditional power sources.

Keywords:
LTCCRFIDRFID tagenergy harvestingintelligent sensorsemi-passive transponderthick-film sensorwireless sensor network

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Area of Science:

  • Sensor Technology
  • Wireless Measurement Systems
  • Energy Harvesting

Background:

  • Traditional flow sensors often rely on electrochemical cells for power, limiting their autonomy in wireless systems.
  • Advancements in Low Temperature Co-fired Ceramic (LTCC) technology and RadioFrequency Identification (RFID) offer new possibilities for low-power sensor design.
  • The increasing availability of low-power electronics is crucial for developing self-sufficient sensor nodes.

Purpose of the Study:

  • To present the concept and implementation of battery-less flow sensors for wireless measurement systems.
  • To demonstrate the feasibility of autonomous operation by leveraging energy harvesting techniques.
  • To eliminate the reliance on electrochemical cells for sensor power supply.

Main Methods:

  • Development of an electromagnetic LTCC turbine transducer with a low-power signal conditioner (approx. 15 µA current draw).
  • Integration of a RadioFrequency Identification (RFID) interface for data exchange and power transfer.
  • Implementation of dual energy harvesting: one from the sensor's operation and a second from ambient electromagnetic fields (GSM, Wi-Fi).

Main Results:

  • A novel autonomous flow sensor node capable of measuring fluid flow rates was designed.
  • The sensor successfully utilizes harvested electromagnetic energy for data transmission and operation.
  • The device functions as a semi-passive transponder, accumulating excess energy.
  • Total autonomy is achieved through continuous energy harvesting from environmental radio systems.

Conclusions:

  • Battery-less flow sensors are feasible for wireless measurement systems by integrating LTCC and RFID technologies.
  • Energy harvesting from electromagnetic fields provides a viable alternative to traditional power sources for autonomous sensors.
  • The proposed sensor design offers a sustainable and self-sufficient solution for fluid flow monitoring.