Self-Powered Portable Electronic Reader for Point-of-Care Amperometric Measurements

In this work, we present a self-powered electronic reader (e-reader) for point-of-care diagnostics based on the use of a fuel cell (FC) which works as a power source and as a sensor. The self-powered e-reader extracts the energy from the FC to supply the electronic components concomitantly, while pe...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2019-08, Vol.19 (17), p.3715
Main Authors: Montes-Cebrián, Yaiza, Álvarez-Carulla, Albert, Colomer-Farrarons, Jordi, Puig-Vidal, Manel, Miribel-Català, Pere Ll
Format: Article
Language:English
Subjects:
amperometric measurements
Biodiesel fuels
Biosensors
E-books
Electrical measurement
Electricity
Electricity distribution
Electronic components
Electronics
Energy
Fuel cells
low power electronics
Point of care testing
point-of-care diagnostics
portable
self-powered
Sensors
smart electronics
Urine
Waste materials
Water quality
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Summary:In this work, we present a self-powered electronic reader (e-reader) for point-of-care diagnostics based on the use of a fuel cell (FC) which works as a power source and as a sensor. The self-powered e-reader extracts the energy from the FC to supply the electronic components concomitantly, while performing the detection of the fuel concentration. The designed electronics rely on straightforward standards for low power consumption, resulting in a robust and low power device without needing an external power source. Besides, the custom electronic instrumentation platform can process and display fuel concentration without requiring any type of laboratory equipment. In this study, we present the electronics system in detail and describe all modules that make up the system. Furthermore, we validate the device's operation with different emulated FCs and sensors presented in the literature. The e-reader can be adjusted to numerous current ranges up to 3 mA, with a 13 nA resolution and an uncertainty of 1.8%. Besides, it only consumes 900 µW in the low power mode of operation, and it can operate with a minimum voltage of 330 mV. This concept can be extended to a wide range of fields, from biomedical to environmental applications.
ISSN:1424-8220
1424-8220
DOI:10.3390/s19173715