| Autor: |
Nishat T, Tasneem, Dipon K, Biswas, Pashupati R, Adhikari, Avinash, Gunti, Adnan B, Patwary, Russell C, Reid, Ifana, Mahbub |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Scientific reports. 12(1) |
| ISSN: |
2045-2322 |
| Popis: |
This paper presents a motion-sensing device with the capability of harvesting energy from low-frequency motion activities. Based on the high surface area reverse electrowetting-on-dielectric (REWOD) energy harvesting technique, mechanical modulation of the liquid generates an AC signal, which is modeled analytically and implemented in Matlab and COMSOL. A constant DC voltage is produced by using a rectifier and a DC-DC converter to power up the motion-sensing read-out circuit. A charge amplifier converts the generated charge into a proportional output voltage, which is transmitted wirelessly to a remote receiver. The harvested DC voltage after the rectifier and DC-DC converter is found to be 3.3 V, having a measured power conversion efficiency (PCE) of the rectifier as high as 40.26% at 5 Hz frequency. The energy harvester demonstrates a linear relationship between the frequency of motion and the generated output power, making it highly suitable as a self-powered wearable motion sensor. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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