Protótipo para o ensino de controle digital através de um sistema de controle de temperatura

Abstract

Due to the wide dissemination of the use of control systems in the most diverse professional fields, the learning of its various modalities through digital methods becomes relevant. Due to the high cost of commercial models and the scarcity of prototypes to relate theory to practice, academic models are useful, as they improve the interdisciplinarity between theories assimilated during the academic journey and the practices performed during the professional life. Thus, until now some didactic modules have been proposed, such as: ball and bar system, wind levitation and inverted pendulum system on a sliding bar, among others. Thinking about demonstrating the functioning and interaction between theory and its applications, a digital temperature control system based on a physical model. The system maintains the temperature inside the model according to a user-defined reference value. This system has a temperature sensor, which sends the read values to the Arduino board microcontroller. This, in turn, interprets the values and compares them with the reference value, which is processed by the digital PID that determines the appropriate signal to be sent to an H Bridge, which activates an incandescent lamp for heating and exhausts for cooling. In parallel, the system shows current and desired temperatures through a display.