目的 设计一种非接触式呼吸暂停检测与远程监护装置。方法 系统硬件由生物雷达传感器、STM32单片机以及LoRa 远距离无线通信模块组成。使用生物雷达传感器对病人呼吸信号进行实时的无接触式采集，经过STM32单片机进行A/D 转换为数字信号，最后经LoRa模块对人体呼吸信号进行实时的远距离无线传输，上位机将接收到的呼吸信号进行实时的 处理并绘制为可视化的呼吸信号波形。 结果 实现了人体呼吸信号的远距离实时检测及呼吸暂停判断，有效检测距离可达 2 m以上，无线传输距离可达1 km以上。结论 本系统能够实现人体呼吸信号的远距离实时性监护以及呼吸暂停的初步判 断，方便医护人员远距离实时的监测病人呼吸状况。本装置外形设计小巧、制作成本低、实时性与可靠性较高，具有较好 的应用场景。

Objective To design a non-contact apnea detection and remote monitoring device. Methods The hardware of the system was composed of a biological radar sensor, a STM32 microcontroller and a LoRa remote wireless communication module. Using biological radar sensors on the patient respiratory signal real-time non-contact collection, through the STM32 MCU A/D conversion for digital signal, finally the LoRa module on human respiratory signal real-time remote wireless transmission, PC would receive the respiration signal real-time processing and map for the visualization of respiration signal waveform. Results The long-distance realtime detection and apnea judgment of human respiratory signal were realized. The effective detection distance was more than 2 m, and the wireless transmission distance was more than 1 km. Conclusion The system can realize the remote real-time monitoring of human respiratory signal and the preliminary judgment of apnea, which is convenient for the medical staff to monitor the patient’s respiratory condition remotely and real-time. The device has small appearance design, low production cost, high real-time and reliability, and has a good application scene.