Diseño e implementación de un prototipo de una red inalámbrica con nodos inteligentes como ayuda para el manejo y selección de cultivos en cielo abierto.

Abstract

The objective of the titling work was the design and implementation of a wireless network prototype with intelligent nodes to aid in the management and selection of open-pit crops (ASC). It consists of a wireless network based on the Arduino and Nodemcu development cards. It is made up of two nodes, the coordinator and the data acquisition, which together allow monitoring some physical chemical variables of the soil that influence the quality of production, including humidity, temperature and pH. The prototype, through the sensors placed in the data acquisition module, processes the information and sends it, through the mesh-type wireless network via radio frequency, to the coordinating node or Gateway. The information received is stored in a database mounted on the free platform 000WebHosting, where the data is visualized and displayed graphically in real time on the network. It presents suggestions on crops that can be made because it maintains related information about the main crops, the same which can be increased. From the tests carried out, it was checked by comparison with standard-equipment that the prototype implemented presents the absolute error in temperature measurements of +/- 1° C. The tests about the communication between modules verified that up to distances of 550 meters with line of sight does not present packs losses. When analysing the readings emitted by the prototype in terms of the coefficient of variation, its sensitivity was determined because it reports values close to zero no greater than 2%. From the tests carried out, it can be concluded that the implemented prototype can become an aid tool to provide relevant information for farmers, in the decision making process in order to improve the production of their crops. It is recommended to incorporate to the system alert messages, to emit warnings when a parameter is outside the established range and the capacity to identify specific measurement zones, as well.