研究目的
To design and implement a low-cost photovoltaic monitoring system network based on LoRaWAN technology that allows users to monitor the status of photovoltaic systems panels in real-time from a long distance.
研究成果
The proposed photovoltaic panels monitoring system using LoRaWAN technology allows for real-time monitoring of solar panels from any point with internet access. It is a cost-effective alternative to GSM, not requiring a data plan, just an internet connection to the gateway. The system faces challenges related to communication range and sensor quality.
研究不足
The communication range of the system depends on several factors such as relief topography, high buildings, type of antenna used, and antenna position. Finding good sensors for voltage and current with low price and high efficiency is also a challenge.
1：Experimental Design and Method Selection:
The system is designed to measure the output voltage and current of PV panels using LoRa technology for long-distance communication. It includes a measuring circuit for voltage and current, and a communication network based on LoRaWAN.
2：Sample Selection and Data Sources:
The system is tested on three solar cell sites in Middle Technical University-Iraq, measuring AC voltage up to 400 V and current up to 30A.
3：0A.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Includes Arduino UNO R3.0, LoRa Dragino shield, LG-01-S LoRa Dragino gateway, Allegro? ACS712 current sensor, and operational amplifiers for voltage measurement.
4：0, LoRa Dragino shield, LG-01-S LoRa Dragino gateway, Allegro? ACS712 current sensor, and operational amplifiers for voltage measurement.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The system measures voltage and current, sends data via LoRa to a gateway, which then uploads the data to a cloud for storage and monitoring via a smartphone application.
5：Data Analysis Methods:
Data is visualized and monitored in real-time through a desktop application and an Android smartphone application designed using MIT App Inventor 2.
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