Sistema autônomo de baixo custo para mediação multiparâmetro de água superficial

Abstract

This work presents the development of an autonomous, low-cost solution for the collection, recording, and transmission of multiparameter water quality data. These combined features form a datalogger. Being autonomous, it does not require an operator to be present for data acquisition and annotation. The low cost facilitates its application in various scenarios without a burdensome counterpart. The information transmission allows real-time decision-making, even from a distance. As a multiparameter system, it provides a more comprehensive profile of water quality. When a single variable cannot explain a phenomenon, the conjunction with others can. The results demonstrate the construction of hardware, with a cost below R$ 1,300.00, approximately one minimum wage, and software. The calibration of temperature, total dissolved solids, turbidity, and pH sensors is also presented, along with a successful 3-day real field test.