Prototipagem de regulador de fluxo de ar de mina subterrânea em plataforma Arduíno

Abstract

The underground mine ventilation is an important auxiliary operation that aims to maintain safe and healthy environmental conditions for those who work in these environments and are exposed to risks such as toxic gases, dust, humidity and thermal discomfort. In this sense, the regulatory standards for mining require certain minimum and maximum air flows for the socalled work fronts, which can be development or mining fronts. However, the ventilation of this type of mine is performed artificially, with the use of high pressure and power fans, which have a high acquisition and operating cost. That said, it can be seen that keeping air flows at constant values that meet the need to mitigate health and safety risks and improve system efficiency, reducing costs, is very necessary. In this way, this work proposes to plan and build a prototype of an airflow monitor and regulator on an Arduino platform, with low cost, robustness and that simulates the need for underground mining. For this, it will be necessary to plan the circuit in Arduino in a Tinkercad environment, for analysis and adaptation of the necessary sensors, development and construction of a model that simulates underground galleries through ducts which the simulated air flow and, finally, integrate the sensors and actuators needed with the model and with the Arduino platform, to enable the construction of the prototype. After the prototype is built, a validation will be carried out through the analysis of the monitored and required air flows and the times required for the Arduino to make the desired decision. Finally, the prototype reduced airflow by an average of 29%, making it an affordable project from an academic point of view (cost of R$184.00), in addition to meeting safety standards, it stands out for its adaptability to different environments and easy modification of intervals.