Monitoramento de processo simulado para refrigeração de leite com interface baseada em IOT

The dairy industry has a relevant participation in the production chain in Brazil, being subjected to strict quality controls, according to norms and current legislation. One of the problems faced by the sector is related to the lack of monitoring of physical quantities involved in the process of milk refrigeration, but mainly in the facilities of small producers. In this context, this course completion work develops an interface, based on the concept of the Internet of Things (IoT), to enable users to access information, for example, the current temperature of the milk remotely, using a smartphone or computer with internet access. To this end, we used the ESP8266 microcontroller board, which has an integrated Wi-Fi module, to enable sending information collected by sensors to a monitoring interface configured on the ThingSpeak platform. This interface allows the user to monitor the volume of liquid present in a container to simulate the behavior of a milk cooling tank and, in addition, it is possible to check its temperature and the electrical voltage of the power supply network. In addition to the temperature value, the percentage of liquid present in the tank, the level and the electrical voltage of the supply network are monitored. In this way, the daily milk production capacity is registered, and problems related to temperature can be identified and correlated, as an alert, to possible failures in the electric power supply that can impact the quality of the final product. Finally, an analysis of the electric power quality is made, calculating indicators provided in Module 8 of PRODIST (Procedures for Distribution of Electric Power in the National Electric System).