VentQsys: low-cost open IoT system for CO2 monitoring in classrooms

Rafael Fayos-Jordan*, Jaume Segura-Garcia, Antonio Soriano-Asensi, Santiago Felici-Castell, Jose M. Felisi, Jose M. Alcaraz-Calero

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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In educational context, a source of nuisance for students is carbon dioxide (CO2) concentration due to closed rooms and lack of ventilation or circulatory air. Also, in the pandemic context, ventilation in indoor environments has been proven as a good tool to control the COVID-19 infections. In this work, it is presented a low cost IoT-based open-hardware and open-software monitoring system to control ventilation, by measuring carbon dioxide (CO2), temperature and relative humidity. This system provides also support for automatic updating, auto-self calibration and adds some Cloud and Edge offloading of computational features for mapping functionalities. From the tests carried out, it is observed a good performance in terms of functionality, battery durability, compared to other measuring devices, more expensive than our proposal.
Original languageEnglish
Pages (from-to)5313-5327
Number of pages15
JournalWireless Networks
Early online date18 Oct 2021
Publication statusPublished - Nov 2021


  • IoT
  • WSN
  • spatial statistics
  • CO2
  • open-source
  • sustainability


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