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A New Configurable Wireless Sensor System for Biomedical Applications with ISO 18000-3 Interface in 0.35 µm CMOS.

Tatjana Fedtschenko1, Alexander Utz2, Alexander Stanitzki3

  • 1Fraunhofer IMS, 47057 Duisburg, Germany. tatjana.fedtschenko@ims.fraunhofer.de.

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Summary

A new wireless sensor system enables non-invasive blood sugar monitoring using amperometric measurements of tear fluid. This configurable system achieves high accuracy with low power consumption and reliable wireless data transmission.

Keywords:
13.56 MHzISO 18000-3NFCRFIDamperometrybiosensorpotentiostatwireless

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Area of Science:

  • Electrical Engineering
  • Biomedical Engineering
  • Sensor Technology

Background:

  • Amperometric measurements are crucial for biochemical analysis.
  • Wireless sensor systems offer advantages in remote monitoring and data acquisition.
  • Non-invasive glucose monitoring is highly desirable for diabetes management.

Purpose of the Study:

  • To develop a configurable wireless sensor system for amperometric measurements.
  • To integrate a nano-potentiostat and a wireless frontend for data transmission and power.
  • To enable non-invasive blood glucose level determination using tear fluid.

Main Methods:

  • Implementation of a two-chip sensor system in 0.35 μm CMOS technology.
  • Integration of an on-chip nano-potentiostat for amperometric measurements.
  • Utilizing an ISO 18000-3 compliant frontend for wireless telemetry and power.

Main Results:

  • The system achieved better than 5% accuracy for sensor currents from 0.1 μA to 10 μA.
  • Total power dissipation was less than 600 μW.
  • Wireless communication distance exceeded 7 cm with the realized antenna geometry.

Conclusions:

  • The developed wireless sensor system successfully performs amperometric measurements for non-invasive glucose monitoring.
  • The system demonstrates high accuracy, low power consumption, and effective wireless data transmission.
  • This technology holds promise for convenient and continuous blood sugar level monitoring.