Implementación de un prototipo electrónico inalámbrico para supervisión, aviso y control de gases contaminantes en invernaderos artesanales.

Abstract

A Wireless Supervisory Electronic Prototype was implemented. Notice and Control of polluting gases in artisanal greenhouses, is a low cost prototype, easy installation and management. With the proposed project is expected to have a favorable social and economic impact for the population that is dedicated to agricultural exposure in artisanal greenhouses where the concentration of harmful gases for health can be critical. The prototype tends to be scalable and allows zone monitoring of the variables of NH3, CO, C3, NOx and temperature. It consists of three modules, two of them based on the Arduino platform, they are communicated by radiofrequency based on the IEEE 802.15.4 standard of WPANs with a maximum range of 510 meters with line of sight and up to 50 meters indoors. The sensor node collects and sends the information to the remaining modules. The monitoring and control module allows the visualization of the measurements with time and date, stored the information of the day in a MicroSD card and allows access from its touch screen to information regarding the allowed temperature and contamination levels. The warning module on the other hand is responsible for comparing the processed information with the pre-established warning limits and sending a message with the current values indicating which variables are out of range. From the tests carried out, it was found that the prototype has an average error of 0.32 ° C in the measurement of temperature variable. And an average error of less than 15ug/m3 for the pollution variables. It is concluded that the prototype is considered as a mini air quality monitoring station, so its use is limits to closed environments. It is recommended to incorporate sensors of Sulfur Dioxide (SO2), PM2.5, PM10 into the prototype to have a complete air quality monitoring station.