Journal of Biosystems Engineering

Korean Society for Agricultural Machinery (한국농업기계학회)
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Development of Correction Equation and Characteristics Evaluation for Moisture Meter of Microwave Resistance Type

고주파 저항방식 함수율계의 보정식 개발 및 특성평가

  • Jeon, Hong-Young (Department of Agriculture Agricultural Research Service) ;
  • Kang, Tae-Hwann (Agriculture Science & Technology Research Institute, Chungbuk National University) ;
  • Han, Chung-Su (Dept. of Biosystems Engineering, Chungbuk National University)
  • Received : 2010.04.01
  • Accepted : 2010.06.10
  • Published : 2010.06.25
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Abstract

This study compared moisture content measured by moisture meter of microwave resistance type(MMMRT) and standard moisture content of paddy, and developed the correction equation using linear and curvilinear regression analysis, and to explore its significance test. The correction factor according to the range of moisture content was developed to improve the measurement precision of MMMRT. The results were as followings. The coefficients of determination of correction equation by linear and curvilinear regression analysis with comparing the MMMRT and standard moisture content were 0.946 and 0.968, respectively. The moisture content error of MMMRT and standard moisture content measured after the MMMRT were corrected by moisture content rate of every 5% using the correction equation by curvilinear regression analysis appeared with 0~0.5% and 0.9~1.8% respectively in the moisture content range of 15~20% and 20~25%.

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References

  1. Baek, S. B., E. S. Doh, J. C. Koh and G. S. Ho. 1994. Experimental Statistics. Konkuk University Press, Seoul, Korea.
  2. Cho, S. I. 1993. Development of nondestructive moisture sensor for agricultural products using hydrogen NMR-feasibility experiments. Journal of the Korean Society for Agricultural Machinery 18(3):252-261. (In Korean)
  3. Cho, S. I., C. H. Chung and C. W. Kim. 2000. Development of a capacitance type moisture meter for rough rice. Journal of the Food Engineering Progress 4(2):104-109. (In Korean)
  4. Chung, C. H., S. I. Cho, K. B. Kim and Y. S. Park. 1999. Development of moisture meter for paddy rice using electrical impedance. Journal of the Food Engineering Progress 3(1):40-44. (In Korean)
  5. Kim, C. L. 2004. Statistical Analysis using SAS. Data Research, Seoul, Korea.
  6. Kim, J. M., C. H. Choi, B. K. Min and J. H. Kim. 1998. Development of prediction model for moisture and protein content of single kernel rice using spectroscopy. Journal of the Korean Society for Agricultural Machinery 23(1):49-56. (In Korean)
  7. Kim, K. B. and S. H. Noh. 1999. Measurement of grain moisture content using RF impedance-Electrical properties of grain-. Journal of the Korean Society for Agricultural Machinery 24(2):123-134. (In Korean)
  8. Kim, K. B., J. H. Kim and S. H. Noh. 1999. Development of moisture content measurement device for paddy rice using microwave free space transmission. Journal of the Korean Society for Agricultural Machinery 24(3):235-242. (In Korean)
  9. Sumi, A. 1987. Moisture meter for grain hopper scale. Journal of Senshu Univ., Hokkaido (Nat. Sci.) 20:209-217. (In Japanese)