1. Technology and Entrepreneurship Competence Center, Panevezys Faculty of Technologies and Business, Kaunas University of Technology, Nemuno St. 33-218, LT-37164 Panevezys, Lithuania
2. Department of Automation, Faculty of Electrical and Electronics Engineering, Kaunas University of Technology, Studentu St. 48-320, LT-51367 Kaunas, Lithuania
3. Department of Electronics Engineering, Faculty of Electrical and Electronics Engineering, Kaunas University of Technology, Studentu St. 48-213, LT-51367 Kaunas, Lithuania