Diseño e implementación de un sistema automatizado para el proceso de producción de leche en el Centro Experimental de Tunshi.

Abstract

In this degree work, it was designed and implemented an automated system for the process of milk production in the experimental center of Tunshi which belongs to the Escuela Superior Politécnica de Chimborazo, the SCADA operating system integrates three subsystems, which have specific functions as: food dosing system, door control system and measurement of produced milk system; all of them are governed by a programmable logic controller PLC that handles communication with devices that are part of the system; such as: capacitive sensors, photoelectric sensors, solenoid valves, and pneumatic actuators. Then, the controller integrates via an OPC server to a system generated in the Labview software, which will handle the monitoring and control of the complete system, having a communication with PostgreSQL that allows the management of information from the database of experimental center of Tunshi. The food dispensing and door control system in the milking station are basically handled with pneumatic technology, which allows us to have control of such systems. Regarding the measuring of milk system that is implemented on the system of milking in the experimental center, it has a direct communication with Labview, which through its tool NI Vision and cameras makes the digital processing of images from the milking system display that allow us to store the value of production in the system unified with the database as it is shown in the results where 23% of food is reduced when using the dosing system. Concluding that the food dosing system allowed to minimize human intervention, to reduce stress and times in the production process getting a measured and dosed feed value. The door control system with integrated sensors allowed to have control of speed and strength in the opening and closing to avoid causing damage to livestock. Finally, the reading system of milk production records and stores the information in the database, recommending to the technical staff in charge of the experimental center to have implemented a preventive maintenance of pneumatic and mechanical system.