Financially profitable greenhouses are fully automated. The producer defines the monitoring limits for the ideal growth environment and then, the system controls automatically each adjustment to keep indoor climate at the optimal level. Increasing greenhouse sizes have forced the producers to use several measurement points for tracking the changes in the environment, thus enabling energy saving and more accurate adjustments. When each measurement point needs its own wire, the costs and cabling work increase exponentially. Once the measurement spot has been built, it is tedious to be relocated. Wireless sensor networks are gained ground in various industries. Agriculture and especially microclimate monitoring and controlling have many promising targets where the benefits of wireless devices can be exploited. In this M.Sc. thesis we discuss the wireless sensor networks applications for greenhouses monitoring. Moreover, we have built the system practically and assist the applicability of such wireless networks through real-side measurements. Star topology network measured temperature, humidity and irradiance -important developmental factors of the plants in Martens greenhouse research foundation. Test setup greenhouse was divided into vertical blocks and nodes monitor one block at a time. The idea of the vertical distribution was to gather information about the differences occurs in the climate between lower and upper flora. The measurement results proved the functionality and reliability of the wireless sensor network inside the dense and high moisture greenhouse.
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