• DocumentCode
    1999995
  • Title

    The control of closed soilless growing system in greenhouse agriculture

  • Author

    Zhang Li ; Yong, Wang ; Sun DeMin ; ZengQiang, Duan

  • Author_Institution
    Dept. of Autom., Univ. of Sci. & Technol. of China, Hefei, China
  • Volume
    2
  • fYear
    2002
  • fDate
    2002
  • Firstpage
    1111
  • Abstract
    A control strategy for control in a closed soilless growing system is investigated, considering the combination of sensor technology and expert system technology. In the paper, the method based on curve fitting is introduced to calculate the density of NO3-, K+, Ca2+ and the value of pH and EC. Considering the complexity of plant nutrition, we present a model for the control of nutrition ingredient. The experiment results show that the strategy is effective.
  • Keywords
    agriculture; chemical variables control; curve fitting; expert systems; intelligent control; Ca2+; K+; NO3-; closed soilless growing system; curve fitting; expert system technology; greenhouse agriculture; ion-selective electrode; plant nutrition; sensor technology; Agriculture; Automatic control; Automation; Control systems; Curve fitting; Electrodes; Intelligent control; Sensor systems; Soil; Sun;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Intelligent Control and Automation, 2002. Proceedings of the 4th World Congress on
  • Print_ISBN
    0-7803-7268-9
  • Type

    conf

  • DOI
    10.1109/WCICA.2002.1020751
  • Filename
    1020751
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1999995