Abstract
The accumulation of particles in internal environments has prompted research into developing monitoring systems for air quality. The environmental monitoring is done through atmospheric emission systems, they are high energy consumption and expensive. Therefore, the implementation of atmospheric systems is not a realistic technique for monitoring in internal environments. The use of commercial sensors for monitoring in internal environments is a challenge due to the lack of calibration, selectivity, sensitivity and architecture. For these reasons the objective of the papel are to develop a CO and CO 2 monitoring system with mobile application on Android. A Raspberry microprocessor Raspberry Pi connected to commercial sensors has been incorporated via cables, and wirelessly to an Android App. The sensors that were used are MH-Z19B for the detection of carbon dioxide CO 2 and the MQ-7 for carbon monoxide CO. In order to perform the digital analog conversion between the MQ-7 sensor and the Raspberry PI Zero W, the ADS1115 component are added.
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