Automatização do sistema de ventilação de uma mesa densimétrica

Abstract

This work presents the development of an automated ventilation system for gravity tables, aiming to improve the efficiency, reliability, and ease of operation of these machines used in seed processing. The original system, based on steel cables and pulleys, proved to be unreliable and required frequent maintenance. The new approach replaces this system with electric linear actuators controlled by a PLC (Programmable Logic Controller), integrated with a Human-Machine Interface (HMI), enabling precise control of the airflow rate at each fan on the table. In addition, 3D modeling of the structural modifications was carried out, along with the programming of control commands. The project proved to be technically and economically feasible, keeping the final cost competitive in the national market despite the addition of new components. It is concluded that the proposed automation offers a significant improvement in grain separation quality and in the overall operation of the equipment, making it a promising solution for small and medium-sized producers.