1. Department of Mechanical and Mechatronics Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla, Thailand
2. Department of Electrical and Biomedical Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla, Thailand
3. Research Center for Fundamental Economic Development and Agricultural Economic Potential in the Southern Region, Faculty of Economics, Prince of Songkla University, Songkhla, Thailand