Monitoring Moisture Content for Various Kind of Tea Leaves in Drying Processes Using RF Reflectometer-Sensor System
Kok Yeow You,
Chia Yew Lee,
Kok San Chan,
Kim Yee Lee,
Ee Meng Cheng,
Yeng Seng Lee
Affiliations
Kok Yeow You
School of Electrical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai, 81310 Johor, Malaysia
Chia Yew Lee
School of Electrical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai, 81310 Johor, Malaysia
Kok San Chan
i-Stone Technology, Skudai, 81310 Johor, Malaysia
Kim Yee Lee
Department of Electrical and Electronics Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, 53300 Setapak, Kuala Lumpur, Malaysia
Ee Meng Cheng
School of Mechatronic Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia
Yeng Seng Lee
Department of Electronic Engineering Technology, Faculty of Engineering Technology, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia
This paper presents tea leaves moisture monitoring system based on RF reflectometry techniques. The system was divided into two parts which are the sensor and reflectometer parts. The large coaxial probe was used as a sensor for the system. The reflectometer part plays a role as signal generator and also data acquisition. The reflectometer-sensor system was operated with a graphical user interface at 1.529 GHz at room temperature. The system was able to measure the moisture content of tea leaves ranging 0% m.c to 50% m.c on a wet basis. In this study, up to five kinds of tea leaves bulk were tested. The mean of absolute errors in the moisture measurement for tea leaves was ±2.
