Temperature Monitoring System using Arduino

Abstract

This article presents a temperature measurement system using a microcontroller connected to a circuit with operational amplifiers and a Pt100 sensor. The project discusses introductory aspects of instrumentation and its potential for developing interdisciplinary knowledge in the STEM field. The prototype consists of an electronic circuit, associated with a supervisory system in Labview software, capable of monitoring the temperature of the sensor, which is kept in a recipient with a liquid. The microcontroller circuit monitors the temperature using data from serial communication. The project can be enhanced as a teaching activity to consolidate prototyping concepts and equations related to temperature variation, such as Newton's Law of Cooling, which involves the concept of the derivative. This allows students to visualize how abstract mathematical concepts, such as the derivative, are observed in the real world, as the temperature of the liquid decreases over time in contact with the environment. Therefore, knowledge related to instrumentation and data monitoring using digital systems were discussed.