Energy Performance in FreeRTOS with Parallelism Compared to a Sequential System in a LoRa Water Meter Prototype

• Robert A. Cabral Instituto de Pesquisas Eldorado
• Paulo A. C. UFC
• Michel S. Bonfim UFC
• Emanuel F. Coutinho UFC

DOI: https://doi.org/10.5753/semish.2025.8178

Abstract

This article analyzes the energy performance of an IoT system for water monitoring. The study compared two implementations: one based on the FreeRTOS real-time operating system and the other using the Arduino framework. The tests were conducted in a controlled environment, ensuring uniform conditions for both approaches and minimizing variations arising from the testing process. The results showed that FreeRTOS offers significant advantages in terms of energy efficiency due to its multitasking management, while Arduino stood out for its simplicity of implementation. The study highlights the impact of software choices on the autonomy of IoT-embedded systems, focusing on the importance of efficient energy management to ensure the sustainability of IoT systems in remote monitoring applications.

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