**5. Embedded SCADA and RFID system implemented on Linux platform**

Microcomputer embedded systems are present in almost every part of human activities and environment. Application of such systems enables needed functionality, mobility and autonomy of many implemented systems with low cost. Some of many such systems applications are: acquisition, processing and storage of data from process; monitoring and control of processes; increasing security in the process. All this leads to so called Supervisory Control And Data Acquisition (SCADA) systems used for monitoring, control and data acquisition in industry systems [19, 20]. One of the most important requirements in industrial processes is security. So called Radio-Frequency Identification (RFID) is often used as security technology for identification of participants in the process [21, 22]. RFID is standard technology for identification objects and users in many cases because of contactless identification, relatively high speed, simplicity and low price.

Possibilities for design, implementation and application of embedded SCADA and RFID systems realized using open source technologies are considered, proposed and described here. One practically designed and implemented system for data acquisition and needed control in one industrial process is described [9, 10]. System hardware was implemented using open source microcomputer boards Pandaboard [23], Arduino/Genuino Uno and Mega [24], RFID sensors, temperature and air humidity sensors, WiFi router and additional electronics. Software was implemented using open source tools and programs on LINUX operating system [25]. Acquisition data of the system are: identification numbers of RFID sensor and RFID tag, temperature, air humidity, time of identification. Implemented system enables:

displaying information on LCD (Liquid Crystal Display), control using RFID, control and displaying of information using WUI (Web-based User Interface) and CLI (Command Line Interface), wireless and wired communication with user terminals.
