Development of Device Measuring Real-time Air Flow in Greenhouse
2018
Noh, J.S., National Institute of Agricultural Science, Rural Development Administration, Jeonju, Republic of Korea | Kwon, J., National Institute of Horticultural and Herbal Science, RDA, Haman, Republic of Korea | Kim, Y.Y., National Institute of Agricultural Science, Rural Development Administration, Jeonju, Republic of Korea
This study was conducted to develop a device for measuring the air flow by space variation through monitoring program, which acquires data by each point from each environmental sensor located in the greenhouse. The distribution of environmental factors(air temperature, humidity, wind speed, etc.) in the greenhouse is arranged at 12 points according to the spatial variation and a large number of measurement points (36 points in total) on the X, Y and Z axes were selected. Considering data loss and various greenhouse conditions, a bit rate was at 125kbit/s at low speed, so that the number of sensors can be expanded to 90 within greenhouse with dimensions of 100m by 100m. Those system programmed using MATLAB and LabVIEW was conducted to measure distributions of the air flow along the greenhouse in real time. It was also visualized interpolated the spatial distribution in the greenhouse. In order to verify the accuracy of CFD modeling and to improve the accuracy, it will compare the environmental variation such as air temperature, humidity, wind speed and CO2 concentration in the greenhouse.
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