CALIBRATION OF SENSORS FOR LOW-COST WEATHER STATIONS

Abstract

Considering that meteorological stations are commonly difficult to acquire with available research funds, this work aims to develop and calibrate a low-cost station for measuring temperature and humidity using the Arduino development platform. Two stations were developed: one designed for outdoors environments and the other for indoor environments. The calibration process lasted approximately 2 hours and was carried out inside a climate-controlled chamber through comparison with data collected on a calibrated equipment. Based on this comparison, it was possible to adjust the output data provided by the proposed stations. In the end, an R² coefficient close to 1 was obtained for both stations, which indicates that the sensors used in the proposed stations are reliable. However, reading the graphs leads us to believe that to actually validate the internal station sensor, a longer measurement period would be necessary.