Sistema inteligente para automação do consumo de água do Campus da UFCG de Campina Grande.

Abstract

The scarcity of water resources and the increasing demand for these ask for an emergence of new technologies that allow greater control and monitoring of consumption demands. Thus, this work aims to develop a low-cost intelligent water metering device, aiming at the automated monitoring of consumption. The research was developed in the central Campus of the Federal University of Campina Grande (UFCG). The development of the micromedidor prototype was carried out using Arduino's own programming language and NodeMCU microcontroller with integrated Wi-Fi; the flow sensor was of the turbine type with pulse counting, in addition to the necessary accessories for the operation. The automated meters were installed at the University´s City Hall, Rectory, in the blocks BU, CR and LEP, specifically in the BU block the automated meters were intalled in hidraulic points of indivudual consumption (shower, washbasin, urinal, sanitary basin and kitchen sink). The results obtained were satisfactory, mainly in the building with the highest consumption, that is the University City Hall due to the use of the shower by the infrastructure workers at the end of the day. The second block with higher consumption was the Rectory, explained by the high turnover of people and the operation in the three shifts and often until dawn. The LEP is the third building with the highest consumption, among those studied, which can be justified due to the distillation appliances that are used in this block. Finally, the most water-saving blocks are BU and CR due to the reuse of rainwater in both. For the individual pieces, the highest consumption was of the crown sink 45%, followed by the sanitary basin 43% and then the bathroom´s lavatory 12%, values divergent of the presented in the literature that are of 17%, 29%, and 6% respectively. Therefore, it was possible to develop an intelligent meter for water consumption and lower the cost, ranging from R$ 100.30 and R$ 156.70, lower values than that presented by Horsburgh et al. (2017) of approximately R$ 485.00. The facilities of the prototypes in the buildings: City Hall, Rectory, BU, LEP and CR were completed in addition to the installation in the internal points of BU Block. By monitoring the generated curves it was possible to observe the pattern of consumption of the blocks and the pieces, besides identifying the blocks and pieces with higher registers.