Design and Implementation of a Smart Oxygen Delivery System Using Spo₂ Sensing and Iot Connectivity

Resumen

The Smart Oxygen Delivery System with SpO₂-Based Automation and IoT-Enabled Remote Monitoring is a cutting-edge and smart solution for respiratory care aimed to support patients with chronic and acute respiratory diseases like Chronic Obstructive Pulmonary Disease (COPD), asthma, and COVID-19-induced hypoxemia. The system combines sophisticated sensing technology, embedded hardware, and Internet of Things (IoT) connectivity to provide an intelligent and adaptive oxygen therapy solution. The core of the system is the MAX30102 photo plethysmography (PPG) sensor, which precisely measures blood oxygen saturation (SpO₂) and heart rate through dual-wavelength light absorption. The information is passed on to an ESP8266 microcontroller with Wi-Fi capabilities for wireless connectivity with cloud services. The system constantly monitors SpO₂ levels and triggers an automatic oxygen delivery procedure when the level goes below a predetermined value (e.g., 90%). This is done by actuating a solenoid valve that delivers oxygen from a concentrator or cylinder without the need for human intervention. At the same time, real-time data is streamed to an IoT platform like Thing Speak, allowing healthcare professionals to monitor patient vitals remotely through a secure web-based dashboard. Notifications and alerts can also be set up for life-threatening conditions, thus facilitating quicker medical interventions and minimizing reliance on continuous bedside monitoring. The whole system has affordability, mobility, and scalability in its mind. It consists of low-cost components such as the ESP8266 microcontroller, so it can be implemented in hospitals, rural clinics, home care units, and telemedicine environments. The closed-loop aspect of the system not only improves patient safety and therapeutic outcome but also maximizes the utilization of healthcare staff in high-need or limited-resource environments. With automation merged with cloud-based access to data, this intelligent oxygen supply system is a giant leap in the direction of computerizing respiratory therapy and progressing forward-thinking, technology-based healthcare solutions.