한국농업기계학회:학술대회논문집 (Proceedings of the Korean Society for Agricultural Machinery Conference)
- 한국농업기계학회 1997년도 하계 학술대회 논문집
- /
- Pages.89-98
- /
- 1997
액제 정밀계량장치를 이용한 액제 자동조제 시스템개발
Development of Automatic Nutrient-Solution Control System Using a Low -Cost and Precise Liquid Metering Device
초록
This study was conducted to develop an automatic nutrient-solution control system for small-scale growers. The nutrient-solution control system consisted of a low-cost and precise metering device and a personal computer. The system controlled electric conductivity(EC) and pH of nutrient-solution based on the time-based feedback control method with the information about temperature, EC, and pH of the nutrient-soIution. The performance of the nutrient-solution control system was evaluated through the control of EC and pH while compared with those of commercial nutrient-solution control system. Also an experimental cultivation of tomato was conducted to verify and to improve the developed system. Results of this study were as follows. 1. An automatic nutrient-solution control system based on a low-cost and precise metering device was developed. 2. The developed system controlled EC and pH within