Diseño e implementación de prototipo electrónico para monitorear el ph, conductividad eléctrica y temperatura en cultivos aeropónicos para la Escuela de Agronomía de la ESPOCH.

Abstract

This research project focuses on the design and implementation process for an electronic prototype to monitor the following variables: pH, electrical conductivity and temperature in aeroponic crops. The methodology outlines the steps for designing the prototype, starting with the selection of both software and hardware requirements. The prototype measures the variables by means of properly calibrated sensors. As part of the project, data recording and communication stage was developed using an application developed in LabVIEW for data visualization on PCs, along with another application for mobile phones in order to improve monitoring in relation to recording information acquired from the nutrient solution. The prototype was evaluated by comparing its measurements with a commercial meter. The results indicate a relative error of 4.09%, 0.38%, and 1.30% for temperature, pH and electrical conductivity, respectively, which demonstrates that the measurements obtained by the electronic prototype are reliable. Through the use of this prototype, it is possible to record the variables in the nutrient solution for aeroponic and hydroponic crops, which makes it suitable for growth control and plant development applications in aeroponic crops and in wireless sensor networks in greenhouses.