Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Environmental Control of Plant Production Factory Using Programmable Logic Controller and Computer

PLC와 컴퓨터를 이용한 식물생산공장의 환경제어

  • Kim Dong-Eok (National Institute of Agricultural Engineering of Rural Development Administration) ;
  • Chang Yu-Seob (National Institute of Agricultural Engineering of Rural Development Administration) ;
  • Kim Jong-Goo (National Institute of Agricultural Engineering of Rural Development Administration) ;
  • Kim Hyeon-Hwan (National Institute of Agricultural Engineering of Rural Development Administration) ;
  • Lee Dong-Hyeon (National Institute of Agricultural Engineering of Rural Development Administration) ;
  • Chang Jin-Taek (Kongju National University)
  • Published : 2006.03.01
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Abstract

This study was conducted to develop a system and an control algorithm for control the environment of a plant factory. The greenhouse control system for environmental control was largely composed of a computer and a PLC. The screen of control program was composed of a greenhouse figure which was included machinery and equipments for greenhouse, the graph of environmental factors of inside greenhouse and the image of greenhouse. In order to reduce temperature change, the operation time of ventilation window was changed by 3 stage according to difference between a target and present temperature. When is heating, a temperature variation was shown to be $16.7{\pm}0.8^{\circ}C$. When is cooling, a temperature variation was shown to be $23.1{\pm}0.6^{\circ}C$. When is humidifing, a humidity variation was shown to be $39.3{\pm}1.6^{\circ}C$ %RH. An environmental control system and a control algorithm were proved that it was shown a good performance in a control accuracy. So a computer control system should be adapted to a control system of a greenhouse and a plant factory.

Keywords

References

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