Designing an Efficient Hybrid Energy Harvesting System Compatible with Head/Wrist-Worn Medical Wearable Devices

Tohidinejad, Zahra; Danyali, Saeed; Valizadeh, Majid; Seepold, Ralf; TaheriNejad, Nima; Haghi, Mostafa

doi:10.20944/preprints202403.1487.v1

2024

DOI: 10.20944/preprints202403.1487.v1

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Designing an Efficient Hybrid Energy Harvesting System Compatible with Head/Wrist-Worn Medical Wearable Devices

Zahra Tohidinejad,

Saeed Danyali,

Majid Valizadeh

et al.

Abstract: Keywords: Energy harvesting, Hybrid, Medical Wearable Sensor Nodes, Health Monitoring, Power Management

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Step-Up DC-DC Converter Supplied by a Thermoelectric Generator for IoT Applications

Almeida,

Mendonça dos Santos,

Caldinhas Vaz

et al. 2024

Energies

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This research work aims to design and prototype a DC-DC converter to step up the low voltage of a small, low-power thermoelectric generator (TEG). The system is based on an inductive boost converter and attains a regulated output voltage of 1.2 V. The design’s optimisation was based on simulation and experimental validation and it was implemented with only ten low-cost commercial off-the-shelf (COTS) components. To reduce complexity, the low-side switch MOSFET of the boost converter is directly driven by an LC oscillator, switching at 1.25 MHz. For loads above 20 kΩ, the converter ensures voltages higher than 1.2 V, supplied by the TEG voltage of 0.5 V, while registering identical efficiency values to those of more complex and expensive CMOS-integrated solutions. These designed features suggest applications in remote IoT nodes and portable devices, delivering sufficient power to backup the supply of corresponding sensing and communication low-power circuits, reducing the necessity of battery replacements or increasing their lifetime.

show abstract

Step-Up DC-DC Converter Supplied by a Thermoelectric Generator for IoT Applications

Almeida,

Mendonça dos Santos,

Caldinhas Vaz

et al. 2024

Energies

View full text Add to dashboard Cite

show abstract

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Designing an Efficient Hybrid Energy Harvesting System Compatible with Head/Wrist-Worn Medical Wearable Devices

Abstract: Keywords: Energy harvesting, Hybrid, Medical Wearable Sensor Nodes, Health Monitoring, Power Management

Cited by 1 publication

References 37 publications

Step-Up DC-DC Converter Supplied by a Thermoelectric Generator for IoT Applications

Step-Up DC-DC Converter Supplied by a Thermoelectric Generator for IoT Applications

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