TEMPERATURE AND RELATIVE HUMIDITY DISTRIBUTION INSIDE A GREENHOUSE USING WIRELESS SENSORS

In the last years, the crop production in greenhouses in Sicily has highly increased from the economical point of view both for the higher profit guaranteed by the advanced or deferred crops and for the growing demand of the market.
The aim of this paper is the optimization of the production process inside the greenhouse through the control of the main ambient parameters with a modern system.
The research was carried out in a greenhouse located in Western Sicily.
A modern control system designed to continuously measure chemical and physical quantities without connection cables was used inside the greenhouse in order to measure the ambient parameters (temperature and relative humidity); the wireless communication in the band ISM with frequency 433 MHz was employed.
The system was made up of 3 node sensors and a base station.
The sensors were located inside three environments, previously identified inside the greenhouse, important for plants growing, where the ambient parameters could vary in consequence of interferences from the external environment.
The greenhouse was also provided with a fixed station measuring the same ambient parameters with cabled technology, made up of a station and two sensors, one inside and the other outside the greenhouse.
The research showed that the wireless sensors allowed to notice some differences of the ambient parameters among the three environments inside the greenhouse, that is very important for plants growing and that environment 1, corresponding to plants habitat, then the most important to control, showed differences with environment 3 where usually the traditional monitoring systems are located.

International Symposium on High Technology for Greenhouse System Management: Greensys2007

M. Carrara, P. Catania, F. Pipitone, M. Vallone, S. Piraino, M. Salvia, C. Paolino

greenhouse, temperature and relative humidity, wireless sensors

https://doi.org/10.17660/ActaHortic.2008.801.67