Solar Energy Harvesting (SHE) for Low Power Internet of Things (IoT) Edge Devices
Author : Mamatha Dhananjaya, Dr. Manjunatha Reddy HS and Ramya KV
Abstract :
This This work introduces an energy-efficient monolithic Power Management Unit (PMU) designed specifically for photovoltaic cells, capable of efficiently charging a large supply capacitor and managing stored energy to provide the necessary supply voltage and power for low-energy wireless sensor nodes, including sensors and actuators. The proposed system is self-sustaining, initiating operation with a light source luminosity of 500 lux or higher using only a 1.42 cm² solar cell. Additionally, it integrates an energy monitor, enabling the system to power autonomous sensor nodes operating in discontinuous modes. This PMU enhances energy efficiency, making it ideal for applications requiring low power consumption and reliable energy management in indoor environments.
Keywords :
Solar energy harvesting, power management unit, DC-DC converter
