Energy management for solar-powered IoT devices with performance adjustment

Author(s): YongSeok Lee, Moonju Park
Department of Computer Science and Engineering, Incheon National University, Incheon 22012, Korea
International Journal of Smart Grid and Clean Energy, vol. 8, no. 1, January 2019: pp. 22-30
ISSN: 2315-4462 (Print)
ISSN: 2373-3594 (Online)
Digital Object Identifier: 10.12720/sgce.8.1.22-30

Abstract: In this paper, we propose a power management framework for solar-powered Internet of Things (IoT) devices to maximize the lifetime of the system by adaptively changing performance of the system. Our framework balances the energy consumption and the performance of the IoT system by monitoring energy accumulation and battery, and ensures the minimum level of service. The framework has been implemented in real hardware and software. Experiments with the implemented system shows that our framework can help increase the lifetime of the solar powered IoT system. The framework prevented the IoT device from power down due to the full discharge of the battery at night time, by changing the execution rate based on energy accumulation and battery status. The proposed framework has been implemented using open hardware compatible with Arduino, so it can be used for a wide range of IoT applications and services.

Keywords: Solar power, Embedded system, Low power, Energy management, IoT
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