## 3 Results and Discussion
Based on the obtained values, the electric power is calculated. The data are processed and an information package is formed. The formed information package is transmitted to the RF module, with the help of which the information is sent to the data server. After receiving a command from the data server that the package is successfully received, the microcontroller program is restarted and a new cycle of the program is repeated. The received data from the central controller using the RF module is analysed in the data server and decisions are made whether the system is working properly. The scheme of the data server program code algorithm is presented in Figure 4. The program starts with the Start program command. Reception of the digital data packet from the first stage with the help of the RF module is performed. The next step involves the analysis and evaluation of digital data. After analysing the data, the data are stored into the database. A MySQL software tool was used to create the database. An application was developed using the HTML and Delphi programming languages to display the data graphically on the output device of the central server. This application is intended for process evaluation by the system operator at the control panel. The application provides values of solar electrical parameters (voltage, current and power) over time. The operator can also evaluate the surface temperature of each module and its influence on the operating parameters of the solar batteries. In the output device of the server, it is also possible to monitor the size of incoming and outgoing information packets and the duration of transmission, as well as the status of network communication (whether information packets have been successfully exchanged between the individual hybrid network devices). Figure 4: Scheme-algorithm of the server program code for receiving data from the solar plant and environmental parameters data controller. When there is no system operator at the control panel, basic system information can be transferred to the mobile application on mobile devices (such as mobile phones or tablets, etc.) with the Android operating system. In this case, the GSM network is used to transmit and send the data packets (internet connection provided by the GSM network). In this system, a mobile data monitoring application was developed using the Java programming language. The mobile application algorithm is presented in Figure 5. The program starts after launching the mobile application and checking whether the bandwidth of the GSM network connection is sufficient. The next step is connecting to the server database. The message is received whether the connection is successful. Data scanning and retrieval, as well as the graphical representation process, are in progress. If the data is received successfully and its graphic image is formed, then the data are displayed on the screen of the mobile device. For the mobile application, it is possible to choose an artificial intelligence subsystem that can perform analysis and evaluation of the incoming data in case of an unforeseen event (e.g., in the event of a voltage spike in the solar battery, etc.) or the need to inform the system administration performing operator. Later, the next request to the data server takes place and the next data packet is received, and in this way the program cycle is repeated again. Figure 5: Schematic diagram of the algorithm of the mobile application code. The general graphic image of the mobile application is presented in Figure 2.0 The values of the electrical parameters of individual solar panels such as voltage, current and power can be seen on the screen of the mobile device. As already mentioned, the solar power plant consists of three solar batteries, one of which is of the bifacial type, the other is a tracytic polycrystalline solar cell made of silicon.