Journal of Biosystems Engineering

Korean Society for Agricultural Machinery (한국농업기계학회)
권호 표지
DOI QR코드

DOI QR Code

Basic Study for Cone Penetrometer Type Soil Water Content Sensor using Impedance Spectroscopy

원추 관입형 임피던스 수분센서 개발을 위한 기초 연구

  • Published : 2009.12.25
Download PDF
⟨ Previous Next ⟩

Abstract

This study was conducted to design an cone penetrometer type impedance sensor that can measure soil water content in realtime. The best width between electrical probe was determined by 5 mm. For optimization about realtime application device, linear regression analysis was applied between soil water content and impedance signal. It was concluded that proper combination of excitation frequency, impedance parameter, and model would provide acceptible performance of a soil waler content sensoe. Best model was obatained at a 36.5 MHz with |Z| as a predictor variable, with a coefficient of determination of 0.96 (RMSE=1.35, RPD=4.98).

Keywords

References

  1. ASAE Standards. 2005. S313.3: Soil Cone Penetrometer. ASAE, St. Joseph, Michigan, USA
  2. Jackson, T., K. Mansfield, M. Saafi, T. Colman and P. Romine. 2008. Measuring soil temperature and moisture using wireless MEMS sensors. Measurement 41:381-390 https://doi.org/10.1016/j.measurement.2007.02.009
  3. Kim, K. B., S. C. Kim, D. S. Joo and D. J. Yoon. 2003. Precision measurement of water content in soil using dual RF impedance changes. Journal of KSAM 28(4):369-376. (In Korean)
  4. Lee, D. H., Y. J. Cho, Y. C. Chang and K. S. Lee. 2008. Analysis of main design factors for developing a soil water content sensor using impedance spectroscopy. Journal of Biosystems Engineering 33(4):269-375. (In Korean) https://doi.org/10.5307/JBE.2008.33.4.269
  5. Morgan, K. T., L. R. Parsons, T. A. Wheaton, D. J. Pitts and T. A. Obreza. 1999. Field calibration of a capacitance water content probe in fine sand soils. Soil Science Society America Journal 63:987-989 https://doi.org/10.2136/sssaj1999.634987x
  6. Oh, Y. T., D. S. Oh, K. C. Song, J. S. Shin and J. N. Im. 1998. Application of dielectric sensor for soil moisture measurement. Journal of Soil Science and Fertilizer 31(2):85-94. (In Korean)
  7. Quinones, H, P. Ruelle and I. Nemeth. 2003. Comparison of three calibration procedures for TDR soil moisture sensors. Irrigation and Drainage 52(3):203-217 https://doi.org/10.1002/ird.95
  8. Soil Science Society of America. 2002. Methods of Soil Analysis: Part 4 -Physical Methods. SSSA, Madison, Wisconsin, USA