During 2020-2021, the COVID-19 pandemic exposed significant vulnerabilities in hospital safety, with oxygen-related fires and explosions occurring at twice the usual rate. This highlighted insufficient preparedness for increased oxygen therapy demands and the associated risks of oxygen-enriched atmospheres. This study aimed to develop and test a smart monitoring system to detect increased oxygen concentrations in hospital environments, mitigating the risk of fires. Based on Internet of Things (IoT) technology, the system includes wireless sensors that measure oxygen levels at regular intervals and transmit the data to a database. Alerts are sent to hospital staff via short message service and e-mail when oxygen levels exceed predefined thresholds. The sensors were deployed in an intensive care unit and were validated through real-time measurements under hospital conditions. The system demonstrated high accuracy (±1%) in monitoring oxygen concentrations with low power consumption (345 µA for oxygen concentration measurements taken every minute). Notifications reliably informed staff of oxygen level thresholds, enabling timely interventions. The proposed IoT-based smart monitoring system is a cost-effective and efficient solution for improving safety in medical environments.

Department of Cybernetics and Biomedical Engineering Faculty of Electrical Engineering and Computer Science VSB Technical University of Ostrava 70800 Ostrava Czech Republic

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Pires, S. M. et al. Burden of disease of covid-19: Strengthening the collaboration for national studies. Front. Public Health[SPACE]10.3389/fpubh.2022.907012 (2022). PubMed PMC

Ospina-Tascón, G. A. et al. Effect of high-flow oxygen therapy vs conventional oxygen therapy on invasive mechanical ventilation and clinical recovery in patients with severe covid-19. JAMA326, 2161–2171. 10.1001/jama.2021.20714 (2021). PubMed PMC

Simonson, T. S. et al. Silent hypoxaemia in covid-19 patients. J. Physiol.599, 1057–1065. 10.1113/JP280769 (2021). PubMed PMC

Alhazzani, W. et al. Surviving sepsis campaign: Guidelines on the management of critically ill adults with coronavirus disease 2019 (covid-19). Intensive Care Med.46, 854–887. 10.1007/s00134-020-06022-5 (2020). PubMed PMC

Whittle, J. S., Pavlov, I., Sacchetti, A. D., Atwood, C. & Rosenberg, M. S. Respiratory support for adult patients with covid-19. J. Am. Coll. Emerg. Physicians Open1, 95–101 (2020). PubMed PMC

Kelly, F. E. et al. Fire safety and emergency evacuation guidelines for intensive care units and operating theatres: For use in the event of fire, flood, power cut, oxygen supply failure, noxious gas, structural collapse or other critical incidents. Anaesthesia76, 1377–1391. 10.1111/anae.15511 (2021). PubMed

Wood, M. H., Hailwood, M. & Koutelos, K. Reducing the risk of oxygen-related fires and explosions in hospitals treating covid-19 patients. Process Saf. Environ. Prot.153, 278–288. 10.1016/j.psep.2021.06.023 (2021). PubMed PMC

Dowbysz, A. et al. Analysis of the flammability and the mechanical and electrostatic discharge properties of selected personal protective equipment used in oxygen-enriched atmosphere in a state of epidemic emergency. Int. J. Environ. Res. Public Health[SPACE]10.3390/ijerph191811453 (2022). PubMed PMC

Yardley, I. & Donaldson, L. Surgical fires, a clear and present danger. Surgeon8, 87–92. 10.1016/j.surge.2010.01.005 (2010). PubMed

Chowdhury, K. Fires in Indian hospitals: Root cause analysis and recommendations for their prevention. J. Clin. Anesth.26, 414–424 (2014). PubMed

Cooper, J., Griffiths, B. & Ehrenwerth, J. Safe use of high-flow nasal oxygen (hfno) with special reference to difficult airway management and fire risk. Anesth. Patient Saf. Found.33 (2018).

Liu, D., Xu, Z., Wang, Y., Li, Y. & Yan, L. Identifying fire safety in hospitals: Evidence from Changsha, China. Alex. Eng. J.64, 297–308. 10.1016/j.aej.2022.08.055 (2023).

Chang, M. G. et al. Reduced effective oxygen delivery and ventilation with a surgical facemask placed under compared to over an oxygen mask: A comparative study. Anesthesiol. Res. Pract.1–5, 2022. 10.1155/2022/4798993 (2022). PubMed PMC

Wróblewski, W. et al. Fire safety of healthcare units in conditions of oxygen therapy in covid-19: Empirical establishing of effects of elevated oxygen concentrations. Sustainability[SPACE]10.3390/su14074315 (2022).

Bai, Y.-W. & Lin, C.-H. A portable oxygen concentration detection and monitor system using a smartphone and a portable sensor module. In 2014 IEEE International Conference on Consumer Electronics - Taiwan 129–130. 10.1109/ICCE-TW.2014.6904019 (IEEE, 2014).

Qandour, A., Habibi, D. & Ahmad, I. Wireless sensor networks for fire emergency and gas detection. In Proceedings of 2012 9th IEEE International Conference on Networking, Sensing and Control 250–255. 10.1109/ICNSC.2012.6204925 (IEEE, Beijing, China, 2012).

Ha, Q. P., Metia, S. & Phung, M. D. Sensing data fusion for enhanced indoor air quality monitoring. IEEE Sens. J.20, 4430–4441. 10.1109/JSEN.2020.2964396 (2020).

Kodali, R. K., Pathuri, S. & Rajnarayanan, S. C. Smart indoor air pollution monitoring station. In Viswanathan, V. (ed.) 2020 International Conference on Computer Communication and Informatics (ICCCI) 1–5. 10.1109/ICCCI48352.2020.9104080 (IEEE, 2020).

Muladi, M., Sendari, S. & Widiyaningtyas, T. Real time indoor air quality monitoring using internet of things at university. In 2018 2nd Borneo International Conference on Applied Mathematics and Engineering (BICAME) (ed. Wibowo, F.) 169–173. 10.1109/BICAME45512.2018.1570509614 (IEEE, 2018).

Tahsiin, F., Anggraeni, L., Chandra, I., Salam, R. A. & Bethaningtyas, H. Analysis of indoor air quality based on low-cost sensors. Int. J. Adv. Sci. Eng. Inf. Technol.10, 2627–2633. 10.18517/ijaseit.10.6.12989 (2020).

Kumar, A., Singh, I. P. & Sud, S. K. Energy efficient and low-cost indoor environment monitoring system based on the ieee 1451 standard. IEEE Sens. J.11, 2598–2610. 10.1109/JSEN.2011.2148171 (2011).

Korukonda, S. & Eswaran, P. Prototyping a smart indoor air quality management system. Int. J. Circuit Theory Appl.9, 6035–6046 (2016).

Patil, K., Laad, M., Kamble, A. & Laad, S. A consumer-based smart home with indoor air quality monitoring system. IETE J. Res.65, 758–770. 10.1080/03772063.2018.1462108 (2019).

Tiele, A., Esfahani, S. & Covington, J. Design and development of a low-cost, portable monitoring device for indoor environment quality. J. Sens.1–14, 2018. 10.1155/2018/5353816 (2018).

Chen, P. & Lu, Z. A web-based indoor environment monitoring system using wireless sensor networks. In 2013 International Conference on Computational and Information Sciences (ed. Sam, R.)2007–2010 10.1109/ICCIS.2013.529 (IEEE, 2013).

Wang, Z.-Y. & Zhang, X.-R. Multi-sensor system for indoor environment monitoring. In Zhou, J. & Zhu, P. (eds.) Proceedings of the 2017 2nd International Conference on Materials Science, Machinery and Energy Engineering (MSMEE 2017) 675–680 (Atlantis Press, 2017). 10.2991/msmee-17.2017.130.

Postolache, O. A., Dias, P. J. & Silva, G. P. Smart sensors network for air quality monitoring applications. IEEE Trans. Instrum. Meas.58, 3253–3262. 10.1109/TIM.2009.2022372 (2009).

Dräger. Dräger pac 6500 (c2024). https://www.draeger.com/en-us_us/Products/Pac-6500.

Vernier. Go direct o2 gas sensor. https://www.vernier.com/product/go-direct-o2-gas-sensor (2024).

PASCO. Wireless oxygen gas sensor ps-3217. https://www.pasco.com/products/sensors/wireless/wireless-oxygen-gas-sensor (2024).

SensoScientific. Universal o2 sensor. https://www.sensoscientific.com/products/4-20ma-universal-sensor-wi-fi-ota/oxygen-probe/ (2024).

Bouzidi, M., Amro, A., Dalveren, Y., Alaya Cheikh, F. & Derawi, M. Lpwan cyber security risk analysis: Building a secure iqrf solution. Sensors23, 2078. 10.3390/s23042078 (2023). PubMed PMC

SGX Sensortech. DS-0340 SGX-VOX Datasheet. SGXSensortech, Katowice. https://www.sgxsensortech.com/content/uploads/2020/04/DS-0340-SGX-VOX-datasheet-1.pdf (2020).

Yu, J. et al. Temperature compensation and data fusion based on a multifunctional gas detector. IEEE Trans. Instrum. Meas.64, 204–211. 10.1109/TIM.2014.2332242 (2015).

Technology, M. MCP960X/L0X/RL0X Datasheet. Microchip, Shanghai (2019). https://ww1.microchip.com/downloads/en/DeviceDoc/MCP960X-L0X-RL0X-Data-Sheet-20005426F.pdf.

Hajovsky, R., Pies, M. & Velicka, J. Design and implementation of an iot sensor for high temperatures. In Kluszczy?ski, K. (ed.) 2021 Selected Issues of Electrical Engineering and Electronics (WZEE) 1–6. 10.1109/WZEE54157.2021.9577014 (IEEE, Rzeszow, 2021).

IQRF Tech s.r.o. TR-76D RF Transceiver. IQRF Tech, Jicin (2022). https://www.iqrf.org/product-detail/tr-76d.

IQRF Alliance. IQRF Interoperability - IQRF Standard Manuals. https://www.iqrfalliance.org/iqrf-interoperability/.

Hajovsky, R. et al. Design of an iot-based monitoring system as a part of prevention of thermal events in mining and landfill waste disposal sites: A pilot case study. IEEE Trans. Instrum. Meas.72, 1–14. 10.1109/TIM.2022.3225046 (2023). PubMed

Figaro Sensor. Sr-3 sr-3 - bench top test chamber - product information. https://www.figarosensor.com/product/docs/sr-3_product%20information%28en%29_rev02.pdf (2016).

Greisinger. Gox 100 user manual. https://www.greisinger.de/files/upload/en/produkte/bda/GOX100_EN.pdf.

Pies, M., Velicka, J. & Hajovsky, R. Datasets of oxygen concentration measurements in icu boxes at faculty hospital in ostrava, czech republic. IEEE Dataport, 10.21227/h7av-ry54 (2023).

IQRF Tech s.r.o. Dpa - three-layer iqrf architecture. https://www.iqrf.org/technology/dpa (2023).