Desenvolvimento de uma plataforma web para monitoramento de dispositivos elétricos de baixa potência

Abstract

The increasing digitalization of electrical systems, driven by the convergence of Internetconnected devices and web-based visualization and data analysis tools, has expanded the demand for accessible remote monitoring solutions. In this context, this work aims to develop the SEMS platform, an abbreviation of Smart Equipment Monitoring System, conceived within the scope of this research as an Internet of Things solution for remote electrical current monitoring in low-power devices. The system architecture is structured in three layers: an embedded device, composed of an ESP32 microcontroller and a non-invasive current sensor SCT-013-100, responsible for signal acquisition and transmission to the server via WebSocket protocol; a backend server developed with the NestJS framework, under the principles of hexagonal architecture, which implements dual-path processing for real-time data propagation and persistence of records in a PostgreSQL database; and a reactive web application built with React and Vite, which provides the user with a dashboard for dynamic monitoring and real-time data visualization and historical time series queries. The platform incorporates automatic reconnection and data validation mechanisms across all communication interfaces. The results obtained demonstrate the technical feasibility of the proposed solution as an accessible tool for monitoring electrical quantities, with potential application in predictive maintenance and energy efficiency scenarios.