Diseño e Implementación de un Sistema de Control de Humedad Relativa y Absoluta en un Invernadero.

Abstract

This project is developed for the improvement of environmental conditions of a agricultural crop, reducing production costs and improving the quality of the product by monitoring temperature, relative, absolute humidity and water management to a greenhouse in the Santander area, using MAMDANI fuzzy logic. In such a way that the agricultural are gradually involved in the use of technology in the field. For the MAMDANI fuzzy control, variables are identified to control, is the adaptation of the sensors that allow to obtain precise measurements of the environment on site to provide the environmental conditions inside the greenhouse, so knowing the values of temperature, relative humidity, environment which will be the variables to control; to get the information of the measures is carried out the MAMDANI fuzzy control, fuzzy logic is used for this reason since the operation of the system does not vary between two States as ON/OFF controllers, but intermediate control values can be found. Due to the simplicity of handling this type of control, which was implemented for this system in particular. For this case it opted for an irrigation system drip, which provides additional benefits to be implemented as the directly reach the roots of tomato plant. To the irrigation system, the diffuse control active actuator (valve) according to the rules implemented in the controller, since only will give the activation or the solenoid valve (ON/OFF) trigger to meet the conditions, where there is the sudden change in temperature and relative humidity of the night of the day before the Sunrise of the next day , is the irrigation drip that supplies 1.5 litres of water they need tomato plants. The implementation of this system allows to tailor the environmental conditions of cultivation under greenhouse, obtaining favorable results for the free development of the product (tomato) and improving the normal conditions of production to air free.