Web-Based Real-Time Voltage, Power, Temperature And Humidity Monitoring System Using Nodemcu

The growing trend of universities and colleges across the country that utilizes solar photovoltaic (PV) system as an auxiliary source for their respective power grids signifies an emerging nationwide concession towards harnessing of an alternative power source among educational institutions. One of these institutions, the Mindanao State University — General Santos City (MSU-GSC), has begun integrating solar energy into its power grid through installing PV equipment on some of its premises. Yet for the meantime, the university's monitoring method for gathering the fundamental information from the solar PV output has remained on-site only of its kind, and hence must be improved. Proposed in this study is a development of a web- based real-time monitoring system that will address the need to attain a more effective monitoring approach. The proposed monitoring system is designed based on a communication architecture called Message Queuing Transport Telemetry (MQTT) to ensure data transmission across the two subsystems that were established to achieve the objectives of the study: the nodemcu-based circuitry and the software subsystem. The nodemcu-based circuitry is developed to track parameter readings such as voltage output, power output and temperature with humidity values that are to be sent to the Internet through an available broker wherein the obtained data is going to be visualized, recorded and analyzed by an authorized user with the help of the essential software installed in a server computer. Experimental results demonstrate that the proposed monitoring system increased the efficiency of monitoring through integrating port forwarding method that allows remote monitoring among the distant clients. Overall, after a major system modification, the functionality of the system was still achieved.