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In this research, the system is designed to monitor parameters of residential solar power sources such as voltage, current, power capacity, power factor and energy consumption.These parameters are measured by a highly accurate PZEM circuit and the specifications are suitable for residential solar power sources.Measurement results will be sent to the main control circuit (ARM controller) via the UART communication standard to analyze and filter the necessary data.The data of that parameter will then be displayed at the system installation site using the TFT screen.After an installation period, the control circuit will send measurement parameters to the dedicated WiFi module (ESP32), the WiFi module will continue to send parameters to the cloud server for storage and monitoring.The system also builds applications that run on many operating systems, can access data, and display data in real time using IoT technology.It should be noted that the system can still operate in the event of loss or absence of WiFi signal by using Bluetooth signal.In addition, the designed system also has the function of remotely controlling on/off the solar power supply to the loads when an incident occurs, ensuring safety for the electrical system.
Trang et al. (Fri,) studied this question.