Diseño e implementación de un sistema electrónico para el monitoreo, control de la helada y riego, en huertos de fresas por medio de redes de sensores inalámbricos con hardware libre.

Abstract

In this titling work, an electronic system was designed and implement for supervision, frost control and irrigation in strawberry orchards by means of wireless network with intelligent sensors, each of the electronic elements has been carefully selected in order to build a system of low cost and consumption. It consists of a module of supervision, one of reception and modulo of risk. The first is responsible for monitoring the temperature, relative humidity and variations in soil moisture; These data are send by radio frequency up to a distance of 60m with an antenna of 17cm in length to the reception module containing a block of use interface , storage and power; the latter activates the actuators; water pump and electro-valves, for the irrigation module operation divided into a drip irrigation system activated according to the soil moisture ranges required by the strawberry plants and sprinkler irrigation system that acts if the supervision module is detecting a frost in the orchard. In the tests performed, the intelligent sensors consisted of coefficients of variation less than 1%, with absolute errors of ±4% in humidity and ±1°C, measuring negative values with respect to temperature, proving that they comply with the system requirements. It is recommended that the data of the variables obtain be shared on the web in order for specialists to analyze the performance of strawberry crops according to environmental parameters.