A Self-Powered Wearable Device using the Photovoltaic Effect for Human Heath Monitoring

This article exhibits the sizing, modelling, and characterization of a power supply (output 3.3 V, 200 mA max, 11 days full autonomy) dedicated to powering a wireless sensor node without a battery but usable as simply as with a battery. This system is modular for various light levels (indoor and outdoor). It is easily integrable into a sensor node, using only commercial circuits. The choices of the photovoltaic surface (amorphous silicon, η 5%, 35 cm 2 ) and of the supercapacitors value (2x 25F, 2.7 V) are explained for permanent operation, considering the solar potential and the consumption. An original part of the paper is devoted to the issue of the startup, in which we demonstrate that after a particular preload, once installed, the device can start on request at the desired time (within 15 days) using as a trigger any light source, such as the LED of a mobile phone.

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A Self-Powered Wearable Device using the Photovoltaic Effect for Human Heath Monitoring

Cited by 3 publications

References 7 publications

Load resistance influence on the Bennet doubler based electrostatic mechanical-to-electrical energy converter operation

Load resistance influence on the Bennet doubler based electrostatic mechanical-to-electrical energy converter operation

A Pendulum-Based Rotational Energy Harvester for Self-Powered Monitoring of Rotating Systems in the Era of Industrial Digitization

Battery-Free Power Supply for Wireless Sensor Combining Photovoltaic Cells and Supercapacitors

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