Study of Establishing Electromagnetic Wave Simulation System for Rice Insecticide

• Main Authors: Cheng-Yu Chen, 陳政佑
• Other Authors: 萬一怒
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/42983079559133273382

碩士 === 國立中興大學 === 生物產業機電工程學系所 === 101 === An electromagnetic wave system generates single-mode resonant and stable energy distribution was build in this study. A electromagnetic wave simulation procedure was applied to study the electromagnetic field and temperature distribution in white rice which is applied for insect elimination by the system. The system’s magnetron generates 2.45GHz electromagnetic waves, transmitted by waveguide with TE10 mode to resonant cavity with TM010 single-mode. In the cavity, the measured power input is 620 watts. According to experiments, the temperature distributions of a cylindrical white rice bar with 2.5cm in diameter and 12.9cm in height heated by the electromagnetic waves of the system has correlation coefficient 0.89 with the temperature distributions calculated from simulation, which shows the suitability of the electromagnetic waves simulation model. However, the coefficient of variances of all temperature measurement points were highly increased with rice bars’ diameter increased, which indicates the diameter variance of rice bar sensitively affecting the electromagnetic field distribution, which because the electromagnetic wave reflection and refraction were increased within the rice kernels. However, the phenomena increase the temperature uniformity in a rice bar. The developed single-mode resonant electromagnetic wave system and its electromagnetic wave simulation procedure developed in this study can be further applied to improve the Online High Speed Grain Insecticidal System developed in our lab and to simulate its functions in the future.