Research Article
eMeD: An Experimental Study of an Autonomous Wearable System with Hybrid Energy Harvester for Internet of Medical Things
Table 1
Comparison between different wearable systems with its characteristics.
| Reference | Methodology | Energy sources | Power management | Energy preservation algorithm |
| [12] | Using simulator to simulate performance of hybrid energy-harvesting protocol | RF and thermoelectric | Conceptual (simulated) | NA | [13] | Integrated power conditioning using 0.13 μm technology and full-wave NMOS rectifier to harvest biomechanical and photovoltaic energy | Biomechanical and photovoltaic | Conceptual (simulated) | NA | [14] | Wearable system that measures vital signs and powered using hybrid energy | Photovoltaic and thermoelectric | Simple DC-DC boost converter | NA | [8] | Using transparent multiport micromeshed antennas | Photovoltaic and RF | Parallel DC-DC boost converter | NA | [15] | Flexible transparent antenna with transparent rectifying circuit and photovoltaic cell | Photovoltaic and RF | ADP5091 only | NA | Proposed eMeD | Wearable system that measures vital signs and powered using hybrid RF and photovoltaic energy | Photovoltaic and RF | ADP5091 with load switch | Yes |
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