An Embedded IoT Architecture for Continuous Output Pressure Surveillance in Medical Oxygen Concentrators

The increasing demand for portable and reliable medical oxygen delivery systems has highlighted the need for continuous monitoring of key performance parameters, particularly output pressure, to ensure patient safety and device efficiency. Traditional oxygen concentrators often lack real-time monitoring capabilities, making it difficult to detect pressure anomalies that may compromise therapeutic effectiveness. To address this limitation, a cost-effective, IoT-enabled monitoring system has been developed. The proposed system integrates a 1.2 MPa atmospheric pressure sensor with an HX710B analog-to-digital converter to accurately measure output pressure levels. An ATmega328 microcontroller processes the data and displays real-time readings on an LCD screen, while an ESP8266 module transmits the information to the Blynk cloud platform for remote access and data logging. This architecture allows healthcare providers and users to receive immediate alerts when pressure deviates from safe thresholds, enabling timely maintenance and minimizing risks. The system demonstrates stable performance, reliable wireless communication, and effective pressure monitoring. Its low cost, ease of integration, and remote accessibility make it well-suited for home healthcare, telemedicine applications, and smart medical device development.便携式且可靠的医用供氧系统需求日益增长，这凸显了对其关键性能参数（尤其是输出压力）开展持续监测的必要性，以保障患者安全与设备运行效能。传统医用制氧机大多缺乏实时监测功能，难以检测可能影响治疗效果的压力异常状况。为解决这一技术局限，本研究开发了一款高性价比、支持物联网（Internet of Things, IoT）的监测系统。该系统将1.2 MPa量程的大气压传感器与HX710B模数转换器（analog-to-digital converter）相结合，可精准测量输出压力值。ATmega328微控制器负责处理采集到的数据，并在液晶显示屏（Liquid Crystal Display, LCD）上显示实时读数；ESP8266模块则将数据传输至Blynk云平台，实现远程访问与数据日志记录。该架构可在压力偏离安全阈值时，向医疗服务人员与终端用户即时推送警报，便于及时开展维护工作并最大程度降低风险。该系统展现出稳定的运行性能、可靠的无线通信能力与高效的压力监测效果。其低成本、易集成性与远程可访问性的优势，使其非常适用于家庭医疗、远程医疗应用以及智能医疗设备开发场景。